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Scientific & Educational >> Weather Abbreviations

Look through 2217 acronyms and abbreviations related to Weather:

• NB — New Brunswick
• MIFG — Shallow Fog (METAR Code)
• TRRN — Terrain
• ADQTLY — Adequately
• LAN — Local Area Network
• ACCUM — Accumulate
• J/KG — Joules per Kilogram
• ABT — About
• DLTD — Deleted
• FTP — File Transfer Protocol
• OPS — Operations
• ACFT — Aircraft
• NBFR — Not Before
• KOCTY — Smoke Over City
• ASAP — As Soon As Possible (pronounced AY-sap)
• FLRY — Flurry
• FIRAV — First Available
• VIP — Very Important Person
• Z DR — Differential Reflectivity
• NTSB — US National Transportation Safety Board
• RF — Radio Frequency
• LCLY — Locally
• PLS — Please
• SUFLY — Sufficiently
• FEMA — Federal Emergency Management Agency
• CONSHELF — Continental Shelf
• MSG — Message
• GRT — Great
• ASL — Above Sea Level
• FYI — For Your Information
• AAL — Above Aerodrome Level
• MOA — Memorandum Of Agreement
• ATTN — Attention
• F SCALE — See Fujita Scale
• RFP — Request For Proposal
• ATA — Area Transportation Authority
• RVR — Runway Visual Range
• M2/S2 — Meters squared per second squared
• USAF — United States Air Force
• FAR — Federal Aviation Regulation
• WAC — World Aeronautical Chart
• NNNN — End of Message
• S — South
• Y2K — Year 2000
• B- — Convective Inhibition
• D-MAWDS — Digital Marine Weather Dissemination System
• BTWN — Between
• AGL — Above Ground Level
• AL — Alabama
• MPH — Miles Per Hour

• ICAO — International Civil Aviation Organization
• BLDU — Blowing Dust (METAR Code)
• SEQ — Sequence
• NAB — Not Above
• SNOINCRG — Snow increasing
• G-AIRMET — Graphical Airmet
• SMS — Synchronous Meteorological Satellite
• FAA — Federal Aviation Administration
• VHF — Very High Frequency
• C — Center
• WWW — World Weather Watch
• RQRD — Required
• GUI — Graphical User Interface (goo-ey)
• DEC — December
• HDRAIN — An Hourly Digital Rainfall Product of the WSR-88D
• GPS — Global Positioning System (ex-NAVSTAR)
• GF — Ground Fog
• SYS — System
• CA — California
• KG — Kilogram
• E — East
• MD — Maryland
• TNTV — Tentative
• FAA/AWR — Federal Aviation Administration/Aviation Weather Research Division
• MIL — Military
• CM — Centimeter
• MSL — Mean Sea Level
• SUPSD — Supersede
• DOH — Development and Operations Hydrologist
• DATANET — Hydrologic Data Network Analysis Software
• ACK — Acknowledge (telecommunications; Cf. NAK)
• WILCO — Will Comply
• CAPE — Convective Available Potential Energy
• CONTS — Continues
• ATC — Air traffic control
• STD — Standard
• N — North
• HTG — Heating
• LA — Louisiana
• T.S. — Tropical Storm
• CAVU — Ceiling And Visibility Unlimited
• WX — Weather
• ALT — Altitude
• AGC — Automatic Gain Control
• CONUS — Continental United States (48 Contiguous States and DC)
• APR — April River Airport, April River, Papua New Guinea
• NSF — National Sanitation Foundation
• MOS — Model Output Statistics
• BC — British Columbia
• ETA — Eta model

• DMG — Damage
• T. D. — Tropical Depression
• MI — Michigan
• NOV — November
• DOD — United States Department of Defense
• EXTRAP — Extrapolate
• R — Right
• AK — Alaska
• NAS — National Airspace System
• MN — Minnesota
• ASD — Aircraft Situation Display
• INFO — Information
• SEC — Second
• LTGCG — Lightning Cloud-to-Ground
• CT — Connecticut
• Y — Yellow
• NC — No Change
• RFI — Radio Frequency Interference
• CW — Continuous Wave
• PWR — Power
• N-TFS — New Tactical Forecast System
• FY — Fiscal Year
• SC — South Carolina
• BLDG — Building
• DTG — Date-Time Group
• MS — Mississippi
• PA — Pennsylvania
• RCVD — Received
• AR — Arkansas
• W — West
• RFC — River Forecast Center
• OBSCD — Obscured
• FT — Feet
• CHG — Change
• ACT — Active
• CONTD — Continued
• LVL — Level
• CAT — Clear Air Turbulence
• AMSL — Above Mean Sea Level
• FLT — Flight
• CLD — Cloud
• BACLIN — Baroclinic
• ADJ — Adjacent
• FAA/ARW — Federal Aviation Administration/Aviation Requirements - Weather Group
• GND — Ground
• NATL — National
• SACSMA — Sacramento Soil Moisture Accounting Model
• W — White
• R — Red
• AMT — Amount

• PBL — Planetary Boundary Layer
• AAAS — American Association for the Advancement of Science
• CONT — Continue
• OH — Ohio
• UT — Utah
• MO — Missouri
• NM — Nautical Mile
• NESDIS — National Environmental Satellite, Data, and Information Service
• LAT — Latitude
• CWT — Combat Weather Team
• PRF — Pulse Repetition Frequency
• NY — New York
• TN — Tennessee
• KY — Kentucky
• NOTAM — Notice to Airmen
• FIS — Flight Information Service
• OR — Oregon
• LMT — Local Mean Time
• LABRDR — Labrador
• PC — Personal computer (host)
• RI — Rhode Island
• JAN — January
• CO — Colorado
• SWLY — Southwesterly
• VT — Vermont
• NJ — New Jersey
• MA — Massachusetts
• NE — Nebraska
• HSD — Heavy Snow Discussion
• VFR — Visual Flight Rule
• HPC — Hydrometeorological Prediction Center
• MCW — Modulated Continuous Wave
• FIG — Figure
• SH — Showers
• HZ — cycles per second (hertz)
• FTE — Full-Time Employee
• BL — Blowing (METAR descriptor)
• CRS — Course
• XPCD — Expected
• COORD — Coordinate
• CFS — Cubic Feet per Second
• VLCTYS — Velocities
• MID — Middle
• GSA — U.S. General Services Administration
• SNR — Signal-to-Noise Ratio
• NLT — Not Later Than
• V — Velocity
• NGT — Night
• IR — Infrared
• RCV — Receive

• ETC — Et Cetera
• NOAA — National Oceanic and Atmospheric Administration (US)
• MT — Mountain
• SD — South Dakota
• NEB — Nebraska
• B — Blue
• NXT — Next
• VOL — Volume
• ADR — Advisory Route
• PERM — Permanent
• RH — Relative Humidity
• WV — West Virginia
• LTR — Later
• NS — Nova Scotia
• ND — North Dakota
• WI — Wisconsin
• AD — Aerodrome
• ME — Maine
• FROPA — Frontal Passage
• BRK — Break
• SO — Southern Oscillation
• NV — Nevada
• AGRMT — Agreement
• SMK — Smoke
• IL — Illinois
• OPMET — Operational Meteorological
• PRESFR — Pressure Falling Rapidly
• OCT — October
• INU — Inertial Navigation Unit
• TURBT — Turbulent
• SML — Small
• ACLTG — Accelerating
• OBSCG — Obscuring
• PSN — Position
• STGST — Strongest
• FSS — Flight Service Station
• RPG — Radar Product Generator
• PRIM — Primary
• PTNL — Potential
• MIN — Minimum
• AUG — August
• GEN — General Motors
• FWD — Forward
• SIG — Signature
• CTGY — Category
• DC — District of Columbia
• FL — Florida
• POD — Probability Of Detection
• UTC — Coordinated Universal Time
• CVR — Cover

• HR — Hour
• KPA — kiloPascal (pressure above ambient (100 kPa = 1 atmosphere excess))
• OPR — Operator
• AFSS — Automated Flight Service Station
• LYRS — Layers
• WAMPS — Weather Automated Mission Planning Software
• POSLY — Positively
• CFO — Communication Filing Officer
• ADDS — Aviation Digital Data Service
• ALQDS — All Quadrants
• UV — Ultraviolet (Light)
• BM — Benchmarking
• VAD — Velocity-Azimuth Display
• RDA — Radar Data Acquisition
• MCS — Mesoscale Convective System
• ARTCC — Air Route Traffic Control Center
• PW — Precipitable Water
• VC — Vicinity
• WO — Without
• FLD — Field
• TC — Tropical Cyclone
• TAS — True Airspeed
• RAOBS — Radiosonde Observations
• MUCAPE — Most Unstable CAPE
• TMW — Tomorrow
• METRO — Metropolitan
• DABRK — Daybreak
• FFW — Flash Flood Warning
• BR — Mist
• DX — Duplex
• SS — Sandstorm
• FZFG — Freezing Fog
• PDT — Product Development Team
• AC — Altocumulus
• MAX — Maximum
• IATA — International Air Transport Association
• SFC — Surface
• WV — Water Vapor
• X — Cross
• PD — Period
• ANS — Answer
• PVA — Positive Vorticity Advection
• UPS — United Parcel Service, Inc.
• BHND — Behind
• MTNS — Mountains
• CDM — Collaborative Decision Making
• PY — Spray
• WSR-57 — A NWS Weather Surveillance Radar designed in 1957
• UFN — Until Further Notice
• RTE — Route

• VOR — VHF Omnidirectional Range
• VIP — Video Integrator and Processor
• MICRO-ART — Microcomputer Automatic Radiotheodolite Master Control Unit
• ACLTS — Accelerates
• NEGLY — Negatively
• CDC — Climate Diagnostics Center
• ACPT — Accept
• OWS — Operational Weather Squadron
• DATACOL — The Software System that supports RFC gateway functions
• AVG — Average Voltage Gain
• LEN — Length
• NM — New Mexico
• FU — Smoke
• AFD — Area Forecast Discussion
• DIST — Distance
• CLR — Clear
• MED — Medium
• TCU — Towering Cumulus
• ADVCTN — Advection
• AFTN — Afternoon
• BLM — Bureau of Land Management of United States Department of the Interior
• ARINC — Aeronautical Radio Incorporated
• SAT — Saturday
• IMC — Instrument Meteorological Conditions
• PM — post meridian
• UNAVBL — Unavailable
• WINTEM — Forecast upper wind and temperature for aviation
• SLP — Slope
• NC — North Carolina
• NCAR/RAP — National Center for Atmospheric Research/Research Applications Program
• BA — Braking Action
• Q — Quadrature
• LTL — Little
• IMPT — Important
• VR — Veer
• ACTV — Active
• IA — Iowa
• FFS — Flash Flood Statement
• TURB — Turbulence
• LI — Lifted Index
• DMSHG — Diminishing
• MPC — Marine Prediction Center
• TACMET-MOD — Tactical Meteorological Observing System Modification
• OML — Operations Manual Letter
• RGT — Right
• SEP — September
• AZ — Arizona
• NBAA — National Business Aviation Association, Inc.
• BCM — Become
• WSR-74 — A NWS Weather Surveillance Radar designed in 1974

• CD — Climatological Data
• WB — Weather Bureau
• HZ — Haze (METAR Code)
• PIXEL — Picture Element
• WTSPT — Waterspout
• BCH — Beach
• TSFRD — Transferred
• T — Thunderstorm (weather reports)
• WSFOS — Weather Service Forecast Offices
• NASA — National Aeronautics and Space Administration (US)
• PUGET — Puget Sound
• KW — Kilowatt (one thousand watts) (measurement)
• VOLMET — Meteorological information for aircraft in flight
• LCL — Local
• TAF — Terminal Aerodrome Forecast
• WBZ — Wet-Bulb Zero
• NEC — Necessary
• PRODG — Producing
• AMDT — Amendment
• CU — Cumulus
• CDA — Command and Data Acquisition
• LGTD — Lighted
• LSR — Local Storm Report
• TOP — Cloud Top
• LLWAS — Low Level Wind Shear Alert System
• SRH — Storm-relative Helicity
• SN — Snow
• NEG — NEGative
• PIREP — Pilot (weather) Report
• R — Required
• INS — Inertial Navigation System
• WRNGS — Warnings
• FZDZ — Freezing Drizzle
• FFG — Flash Flood Guidance
• WI — Within
• USGS — United States Geological Survey (DOI)
• CI — Cirrus
• FM — From
• WNWLY — West-northwesterly
• RVSD — Revised
• SW — South West
• RESP — Response
• UNL — Unlimited
• EXER — Exercise
• WADL — West African Disturbance Line
• INCLS — Includes
• INCL — Include
• WSW — West-southwest
• WSWLY — West-Southwesterly
• UIR — Upper Flight Information Region

• GR — Hail
• DDS — Data Distribution System
• AS — Altostratus
• AP — Airport
• ID — Idaho
• WB — Westbound
• C — Celsius
• FA — Area Forecast
• CIG — Ceiling
• CAT — Category (e.g. CAT-5 cable)
• OFC — Office
• ALTHO — Although
• ARPT — Airport
• SMG — Space Flight Meteorology Group
• NOSIG — No Significant Change
• NCO — NCEP Central Operations
• FZRA — Freezing Rain (METAR Code)
• DCP — Data Collection Platform
• BFR — Before
• WMO — World Meteorological Organization (ICSU)
• WNW — West-northwest
• AFDK — After Dark
• VIL — Vertically-Integrated Liquid water
• TSTMS — Thunderstorms
• RA — Rain
• AIRMET — AIRman's METeorological Information
• BWER — Bounded Weak-Echo Region
• UPS — Uninterruptible Power Supply
• UCP — Unit Control Position
• PRT — Pulse Repetition Time
• MLW — Mean Low Water (nautical Charts)
• FAR — False Alarm Ratio
• FLUC — fluctuation
• AOB — At or Below
• SMRY — Summary
• THRU — Through
• BND — Bound
• BINOVC — Breaks in overcast
• MVFR — Marginal Visual Flight Rules
• APCHG — Approaching
• FIR — Flight Information Region
• CRC — Circle
• LST — Local Standard Time
• MOVD — Moved
• ABV — Above
• TX — TEXAS
• TDL — Techniques Development Laboratory
• NNW — North-Northwest
• FD — Winds and Temperatures Aloft Forecasts
• VV — Vertical Velocity

• ALERT — Automated Local Evaluation in Real Time
• TRPCD — Tropical Continental
• GMDSS — Global Maritime Distress and Safety System (IMO)
• TOR — Tornado Warning
• SWE — Snow Water Equivalent
• IFR — Instrument Flight Rules
• BCFG — Fog Patches
• NNICE — Neural Network for Icing
• WIP — Work In Progress (process)
• NSSL — National Severe Storms Laboratory
• PTLY — Partly
• SHFT — Shift
• DDS — Domestic Data Service
• CB — Cumulonimbus
• SUGG — Suggesting
• BRN — Bulk Richardson Number
• G — Green
• HJ — Sunrise to sunset
• WSHFTS — Wind Shifts
• MCC — Mesoscale Convective Complex
• OTR — Other
• EST — Estimate
• ADVYS — Advisories
• RPRT — Report
• OTLK — Outlook
• MDFY — Modify
• ATCSCC — Air Traffic Control System Command Center
• ROFOR — Route Forecast
• WMC — World Meteorological Center
• BKN — Broken
• CS — Cirrostratus
• T — Temperature
• INTSFYS — Intensifies
• KS — Kansas
• MAY — May Department Stores Company
• STFRM — Stratiform
• XBT — expendable bathythermograph (oceanography)
• TELCON — Telephone Conversation
• POS — Positive
• ATTM — At This Time
• HWY — Highway
• NTFYD — Notified
• VRISL — Vancouver Island, BC
• HGT — Height
• REPL — Replace
• GOES — Geostationary Operational Environmental Satellite
• PUP — Principal User Processor (NEXRAD)
• NH — New Hampshire
• MNM — Minimum
• OVR — Over

• ST — Stratus
• AWHPS — Area Wide Hydrologic Prediction System
• TKE — Turbulent Kinetic Energy
• DFNT — Definite
• CUFRA — Cumulus Fractus
• NC — National Center
• THRUT — Throughout
• BLDS — Builds
• MST — Mosta
• COE — Creek Corps of Engineers
• BLSN — Blowing Snow (METAR Code)
• TNGT — Tonight
• DBL — Double
• COMPARD — Compared
• HDG — Heading
• IP — Ice Pellets
• ADA — Advisory Area
• AWIPS — Advanced weather Interactive Processing System (NOAA)
• COMET — Cooperative Program for Operational Meteorology, Education and Training
• CNFDC — Confidence
• DCS — Data Collection System (NOAA Polar Orbiting Satellites)
• OK — Oklahoma
• ACC — Area Control Center
• BT — Bathythermograph
• ADM — Administrative Messages
• API — Antecedent Precipitation Index
• ALSTG — Altimeter Setting
• ETD — Estimated Time of Departure
• SPENES — Satellite precipitation estimate statement
• NAMIS — NATO Automated Meteorological Information System
• HI — High
• F — Degrees Fahrenheit
• WY — Wyoming
• SHUD — should
• NVA — Negative Vorticity Advection
• GV — Ground Visibility
• WEF — With Effect From
• DES — Descend
• SBSDD — Subsided
• MT — Montana
• LAM — Logical acknowledgment
• PRIN — Principal
• RVA — River Summary
• APRX — Approximate
• ANLYS — Analysis
• PRSTNC — Persistence
• CONTLY — Continually
• DIR — Directory
• RHI — Range-Height Indicator
• WUD — Would

• INTL — International
• OFP — Occluded Frontal Passage
• TSB — Technical Support Branch
• CISK — Conditional Instability of the Second Kind
• Z — Zulu (Greenwich mean time)
• DFNTLY — Definitely
• SHFTG — Shifting
• INP — If Not Possible
• AVN — Aviation Model
• SNGL — Single
• FCST — Forecast
• LTGCC — Lightning Cloud-to-Cloud
• UVV — Upward Vertical Velocity
• CC — Cirrocumulus
• RCVG — Receiving
• HRS — Hours
• LTD — Limited
• ISA — International Standard Atmosphere
• SHWRS — Showers
• MEX — Mexico
• IAO — In And Out
• BLSA — Blowing Sand (METAR Code)
• CAVOK — conditions
• QPFHSD — Ncep Heavy Snow Discussion
• MIC — Meteorologist-In-Charge
• OCS — Oklahoma Climatological Survey
• AOPA — Aircraft Owners and Pilots Association
• NELY — Northeasterly
• ASOS — Automated Surface Observing System
• SHFTD — Shifted
• SMPDBK — The Simplified Dam Break Model
• RPT — Repeat
• ITCZ — Intertropical Convergence Zone (of Seawater)
• COND — Conditions
• SDF — Second-Day Feet
• SWEAT INDEX — Severe WEAther Threat Index
• TEMP — Temperature
• NWS — National Weather Service (formerly U.S. Weather Bureau)
• PROD — Produce
• SG — Snow Grains (weather reports)
• SUPSDS — Supersedes
• WTR — Water
• THKNS — Thickness
• DSIPTN — Dissipation
• VAL — Valley
• LRG — Large
• RTRND — Returned
• GFS — Global Forecast System
• HSF — High Seas Forecasts
• RGN — Region

• NLY — Northerly
• FC — Funnel Cloud
• RMNG — Remaining
• HAZ — Hazard
• DE — DELAWARE
• UNKN — Unknown
• EMC — Environmental Modeling Center
• AWDS — Automated Weather Distribution System
• THKR — Thicker
• MAR — March
• RTRNG — Returning
• THSD — Thousand
• NMC — National Meteorological Center (US)
• NAV — Navigator
• PNHDL — Panhandle
• DVRG — Diverge
• VMC — visual meteorological conditions
• ADQT — Adequate
• OTRW — Otherwise
• ROC — Rate of Climb
• ROML — Regional Operations Manual Letter
• AWT — Awaiting Trial
• BLO — Below
• OAC — Oceanic Area Control Center
• LIFR — Low Instrument Flight Rules
• AVBL — available
• SPKLS — Sprinkles
• THK — Thick
• LOT — Local Office Team
• INVOF — In vicinity of
• SHWR — Shower
• NAT — North Atlantic
• KLYR — Smoke Layer Aloft
• INTMT — Intermittent
• RSG — Rising
• TROFS — Troughs
• NSSFC — National Severe Storms Forecast Center
• RPTS — Repeats
• TF — Terminal Forecast
• INOP — Inoperative
• CHSPK — Chesapeake
• EV — every
• TYPH — Typhoon
• CPBL — Capable
• DLY — Daily
• NRCS — Natural Resources Conservation Service
• THR — Threshold
• SRN — Southern
• SE — Southeast
• ESPINIT — ESP Initialization Program

• WIBIS — Will Be Issued
• RTD — Delayed
• SEWD — Southeastward
• AMIS — Automated Meteorological Information System
• ADDN — Addition
• DMNT — Dominant
• WRN — Western
• OSO — Office of Systems Operations
• RAFS — Regional Analysis and Forecasting System
• NE — North-East
• MORENET — Missouri Research & Education Network
• TOPS — Tops
• GEMPAK — General Environmental Meteorological Package
• RIOGD — Rio Grande
• SM — Statute Mile
• LLJ — Low Level Jet stream
• DTRTD — Deteriorated
• MWO — Meteorological Watch Office
• THKNG — Thickening
• WS — Wind Shear
• STN — Station
• PRSNT — Present
• SQ — Squall
• BLD — Build
• SBSD — Subside
• DZ — Drizzle
• RQRS — Requires
• DEP — Depart
• FCSTR — Forecaster
• ZN — Zone
• ALUTN — Aleutian
• AFOS — Automation of Field Operations and Services
• AFWIN — Air Force Weather Information Network
• ACSL — Altocumulus Standing Lenticular
• DVRGG — Diverging
• CNCL — Cancel
• AMOS — Automated Meteorological Observing System
• RCM — Radar Coded Message
• ID — IDentifier
• ERN — Eastern
• MAP — Mean Areal Precipitation
• YR — Your
• EPRI — Electric Power Research Institute (US)
• PRES — Pressure
• DVV — Downward Vertical Velocity
• EL — Equilibrium Level
• RDR — Radar
• CRCLN — Circulation
• TRNSP — Transport
• UNSTLD — Unsettled

• CANAM — Canadian/American
• ACCAS — Altocumulus Castellanus
• CIP — Current Icing Potential
• CNTRS — Centers
• METAR — Meteorological Terminal Aviation Routine Weather Report
• SFERICS — Atmospherics
• NCEP — National Centers For Environmental Prediction (form. NMC; NWS Center)
• PAC — Pacific Region
• AFWA — Air Force Weather Agency
• INTSFYG — Intensifying
• BCKG — Backing
• GFDL — Geophysical Fluid Dynamics Laboratory (NOAA US)
• IMDTLY — Immediately
• NHC — United States National Hurricane Center
• SXNS — Sections
• LTST — Latest
• AAA — Amended meteorological message
• FAM — Familiar
• SCNDRY — SECONDARY
• UPDFTS — Updrafts
• SBLI — Lifted Index calculated using surfaced based parcel
• GAI — Global Atmospherics Inc
• SHFTS — Shifts
• AOB — Aviation Operations Branch
• HVYST — Heaviest
• KT — Knots
• RSNS — Reasons
• CLEICEIO — Great Lakes 5-Day Ice Outlook
• WWD — Westward (weather reports)
• PRECD — Precede
• ATLC — Atlantic
• APRXLY — Approximately
• MLLW — Mean Lower Low Water (nautical Charts)
• FST — First
• VSBY — Visibility
• ADVCTD — Advected
• TDWR — Terminal Doppler Weather Radar
• AGFS — Aviation Gridded Forecast System
• CEM — Civil Emergency Message
• SAW — Preliminary Notification of Forthcoming Watch
• HTC — The Hydrometeorological Training Council
• AHOS-T — Automatic Hydrologic Observing System - Telephone
• VLY — Valley
• ACTVTY — Activity
• KMH — Kilometers per hour
• UDDF — Up and Down Drafts
• EC — Environment Canada
• RCMDD — Recommended
• GA — Georgia
• MB — Millibar(s)

• CNL — Cancel
• EAA — Experiment Aircraft Association
• ABNML — Abnormal
• SPECI — Aviation selected special weather report
• CNCLD — Canceled
• RECON — Reconnaissance
• CNCLG — Cancelling
• AMPG — Amplifying
• STF — Stratiform
• NCAR — National Center for Atmospheric Research (US)
• NRN — Northern
• ACCID — Notification of an aircraft accident
• DRFT — Drift
• DAPM — The Data Acquisition Program Manager
• YKN — Yukon
• FVRBL — Favorable
• RCMDG — Recommending
• LGT — Light
• LONG — Longitude
• AZM — Azimuth
• FT — Terminal Forecast
• PSBLTY — Possibility
• MDFYD — Modified
• CSI — Conditional Symmetric Instability
• COV — Cover
• RW — Rain Shower
• CNTR — Center
• CRNR — Corner
• SLOLY — Slowly
• PRVDD — Provided
• PROGD — Forecasted
• ALTM — Altimeter
• CNTRD — Centered
• SRND — Surround
• JAN — January
• PRSNTLY — Presently
• CSTAR — Collaborative Science, Technology and Applied Research
• WEFAX — Weather Facsimile
• MNT — Monitor
• ZNS — Zones
• INC — in cloud
• THNG — Thinning
• RUC — Rapid Update Cycle
• SWPC — Space Weather Prediction Center
• RMK — Remark
• TSFRS — Transfers
• JUN — June
• APST — Aviation Products and Services Team
• BLKTG — Blanketing
• ACYC — Anticyclone

• DRFTG — Drifting
• VOR — VHF Omnidirectional Radio Range
• AIRMET — Airman's Meteorological advisory
• TT — Total Totals
• SHEFPARS — A software decoder for SHEF Data
• CRCLC — Circulate
• SARPS — Standards and Recommended Practices
• VAS — VISSR Atmospheric Sounder
• AHOS-S — Automatic Hydrologic Observing System - Satellite
• DIFAX — Digital Facsimile
• CAEM — Commission for Aeronautical Meteorology (WMO)
• VISSR — visible and infrared spin scan radiometer (GOES)
• REQ — Request
• DAMBRK — The Dam Break Forecasting Model
• ASSOCD — Associated
• DMSHS — Diminishes
• NSW — Nil Significant Weather
• CONS — Continuous
• TRMM — Tropical Rainfall Measuring Mission (US-Japan)
• MDL — Model
• ENHNC — Enhance
• LLWS — Low Level Wind Shear
• DSND — Descend
• ABNDT — Abundant
• SPCLY — Especially
• SPC — Storm Prediction Center
• AVARS — Aircraft Vertical Acceleration Reporting System
• SLD — Supercooled Large Drops
• MNLY — Mainly
• ADRNDCK — Adirondack
• NOHRSC — The National Operational Hydrologic Remote Sensing Center
• SGFNTLY — Significantly
• NAWAU — National Aviation Weather Advisory Unit
• PRECDS — Precedes
• CSW — Committee for Space Weather
• RWY — Runway
• FLRYS — Flurries
• TMPRYLY — Temporarily
• DSF — Day-Second Feet
• VFY — Verify
• FSL — Forecast Systems Laboratory (a NOAA ERL)
• OM — Office of Meteorology
• QFE — Atmospheric Pressure At Aerodrome Elevation
• VLYS — Valleys
• FREQ — Frequency
• LOC — Local
• CDFNT — Cold Front
• ADZ — Advise
• AFCTD — Affected
• DEG — Degree

• EFF — Experimental Forecast Facility
• CADAS — Centralized Automated Data Acquisition System
• SLD — Solid
• RVSS — Revises
• AIV — Aviation Impact Variable
• RAOB — Radiosonde Observation
• CLEGLFGLS — Great Lakes Marine Synopsis
• MDS — Minimum Discernible Signal
• DNSTRM — Downstream
• SMWHT — Somewhat
• SLW — Slow
• RTN — Return
• RPDLY — Rapidly
• METOC — Meteorological and Oceanographic
• RTRNS — Returns
• NFDRS — National Fire Danger Rating System
• ARR — Arrive
• SBCAPE — CAPE calculated using a Surface based parcel
• GAMA — General Aviation Manufacturers Association's
• BLKT — Blanket
• ZR — Freezing Rain
• JUL — July
• RVF — River Forecast
• SR — Sunrise
• FCSTD — Forecasted
• ARTYMET — Artillery Meteorological
• RVS — River Statement
• FRQ — Frequent
• ATAD — Automated Telephone Answering Device
• ERL — Environmental Research Laboratories (absorbed By OAR Or NOAA Research)
• ACLT — Accelerate
• AWN — Automated Weather Network
• LEWP — Line Echo Wave Pattern
• BNDRY — Boundary
• ITWS — Integrated Terminal Weather System
• PHYS — Physical
• SUP — Supply
• RAM — Regional Area Meteorologist
• ACARS — ARINC Communications Addressing and Reporting System
• ETA — Greek letter, describes a constant height coordinate model system
• DNSLP — Downslope
• RAFC — Regional Area Forecast Center
• INTCNTL — Intercontinental
• RLTVLY — Relatively
• USMC — United States Marine Corporation
• ADL — Additional
• AOML — Atlantic Oceanographic and Meteorological Laboratory (Miami, Florida) (ERL)
• PUP — Principle User Processor
• DPTH — Depth
• SWOMCD — SELS Mesoscale Discussion

• BLDUP — Buildup
• ESA — Electronic Systems Analyst
• BLW — Below
• WND — Windsor
• UAB — Until Advised By
• PRBLY — Probably
• WMSCR — Weather Message Switching Center Replacement
• SD — Storm Data
• IWEDA — Integrated Weather Effects Decision Aid
• PRSTNT — Persistent
• FEB — February
• TSFRG — Transferring
• LCTMP — Little change in temperature
• DISRED — Disregarded
• AFCTG — Affecting
• FPM — Feet Per Minute
• AFTN — Air Force Television Network
• POSS — Possible
• ECMWF — European Center for Medium-Range Weather Forecasting model
• ELEV — Elevator
• TIP — Until past
• CIN — Convective Inhibition
• BECMG — Becoming
• QG — An abbreviation for quasigeostrophic
• WDLY — Widely
• RMNDR — Remainder
• NAP — NCEP Advisory Panel
• BRKG — Breaking
• FORNN — Forenoon
• CCL — Convective Condensation Level
• NMBRS — Numbers
• RCHD — Reached
• PL — Ice Pellets or Sleet
• LTGCCCG — Lightning cloud-to-cloud cloud-to-ground
• KMARD — Kansas Modernization and Restructuring Demonstration
• PTCHY — Patchy
• SUBTRPCL — Subtropical
• DMSH — Diminish
• NR — Number
• RSNG — Reasoning
• CASC — Central Administrative Support Center
• DISCG — Discontinuing
• FRZN — Frozen
• SRNDG — Surrounding
• NNELY — North-northeasterly
• NW — North West
• RDC — Reduce
• SHRTWVS — Shortwaves
• WIST — Weather Information for Surface Transportation
• OAT — Outside Air Temperature

• GOES — Geostationary Orbiting Environmental Satellite
• EHI — Energy Helicity Index
• KBDI — Keetch-Byram Drought Index
• COT — At the Coast
• STBLTY — Stability
• MHKVLY — Mohawk Valley
• BDRY — Boundary
• SWODY1 — Day 1 Convective Outlook
• LGRNG — Long Range
• INPR — in progress
• WA — Western Approaches
• PRST — Persist
• CNTRLN — Centerline
• CLEGLSCLE — Great Lakes Storm Summary
• TSNT — Transient
• RCKYS — Rockies
• BRKHIC — Breaks in higher clouds
• OPN — Open
• FNTL — Frontal
• SNFLK — Snow flake
• GEO — Geographic
• LDG — Landing (aviation)
• UCAR — University Corporation for Atmospheric Research
• DTRTG — Deteriorating
• WAA — Warm Air Advection
• LONGL — Longitudinal
• DISRE — Disregard
• EXTRAPD — Extrapolated
• CONTRAILS — Condensation Trails
• PRECDG — Preceding
• MDFYG — Modifying
• WFO — Weather Forecast Office
• OVRN — Overrun
• INCR — Increase
• NWP — Numerical Weather Prediction
• HIFOR — High Level Forecast
• BLKTS — Blankets
• COMPAR — Compare
• QBI — Compulsory IFR flight
• CLEGLOCLE — Great Lakes Storm Outlook
• ADVCTG — Advecting
• INSTF — Intensify
• ANBURS — Alphanumeric Backup Replacement System
• CNDN — Canadian
• OBS — Observe
• FRM — Form
• EPV — Equivalent Potential Vorticity
• DVRGS — Diverges
• SWO — Staff Weather Officers
• CNVTV — Convective

• DEGS — Degrees
• ASSOCN — Association
• RTA — Remote to AFOS
• SCA — Small Craft Advisory
• OCLN — Occlusion
• RVS — Revise
• CYC — Cyclonic
• SRNDS — Surrounds
• AAWU — Alaskan Aviation Weather Unit
• VLNT — Violent
• LN — Line
• LLP — Lightning Location and Protection, Inc
• BRM — Barometer
• TWIP — Terminal Weather Information for Pilots
• HADS — Hydrometeorological Automated Data System
• XNG — Crossing
• MRGLLY — Marginally
• IMPLS — Impulses
• SKC — Sky Clear
• QUAD — Quadrant
• FLW — Follow
• BNDRYS — Boundaries
• VIS — Visible
• EUMETSAT — European Organization for the Exploitation of Meteorological Satellites
• STGLY — Strongly
• TNTVLY — Tentatively
• PRBL — Probable
• GRTLY — Greatly
• NTFY — Notify
• MLOS — Microwave Line-Of-Site
• SPRDG — Spreading
• ALF — Aloft
• APCH — approach
• DSTC — Distance
• CARIB — Caribbean
• DSIPTG — Dissipating
• BASE — Cloud base
• MDCRS — Meteorological Data Communications and Reporting System
• HN — Sunset to sunrise
• BYD — Beyond
• LKLY — Likely
• NCDC — National Climatic Data Center
• ADVY — Advisory
• AFW — Air Force Weather
• ALGHNY — Allegheny
• RCH — Reach
• FCSTG — Forecasting
• DLT — Delete
• CNTY — County
• IMT — immediate

• SATFY — Satisfactory
• LYRD — Layered
• PSBLY — Possibly
• EMBD — Embedded in a layer
• ENRT — En Route
• ONSHR — Onshore
• ART — Automatic Radio Theodolite Master Control Unit As
• BLZD — Blizzard
• SWODY2 — Day 2 Convective Outlook
• AWSS — Aviation Weather Sensor System
• INSTL — Install
• OBSC — Obscure
• LTGCW — Lightning Cloud-to-Water
• NCDB — NCEP Computer Development Branch
• EXPCG — Expecting
• SYNS — Synopsis
• CTWFC — CINC Target Weather Forecast Center
• NCWX — No Change in Weather
• ASH — Assistant Service Hydrologist
• ADVNG — Advancing
• GRTST — Greatest
• KFRST — Killing Frost
• BRKSHRS — Berkshires
• RQRG — Requiring
• SRNDD — Surrounded
• SIGMET — Significant Meteorological Advisory
• EXTRM — Extreme
• XPLOS — Explosive
• SHRTWV — Shortwave
• MOVG — Moving
• CONTDVD — Continental Divide
• AFT — Afternoon
• INCRS — Increases
• IMDT — Immediate
• LTGIC — Lightning in Cloud
• RCRDS — Records
• IC — Ice Crystals
• OFF — Offshore Forecast
• EVAD — Extended Velocity
• GLFMEX — Gulf of Mexico
• CDB — Computing Development Branch
• OUBD — Outbound
• EXCLV — Exclusive
• OVC — Overcast (METAR Code)
• CAA — Cold Air Advection
• EXPCD — Expected
• AWC — Aviation Weather Center
• SIERNEV — Sierra Nevada
• SHRTLY — Shortly
• RS — Receiver station

• FQT — Frequent
• ROBEX — Regional OPMET bulletin exchange
• INTMTLY — Intermittently
• ESEWD — East-Southeastward
• DSTBLZN — Destabilization
• VCNTY — Vicinity
• COMPARS — Compares
• VA — Virginia Ash
• ISCS — International Satellite Communications System
• EXTN — Extension
• WFP — Warm Front Passage
• ESELY — East-southeasterly
• APPRG — Appearing
• TAFB — Tropical Analysis and Forecast Branch
• MLLI — Mean Layer Lifted Index
• FZ — Freezing
• CNVGG — Converging
• FPO — Flood Potential Outlook
• PRECDD — Preceded
• APRNTLY — Apparently
• BRG — Branching
• NNWLY — North-northwesterly
• PRESRR — Pressure Rising Rapidly
• CFP — Cold Front Passage
• DVLPD — Developed
• THU — Thursday
• FRZ — Freeze
• CDFNTL — Cold frontal
• AGN — Again
• DSTBLZ — Destabilize
• SAWRS — Supplementary Aviation Weather Reporting Station
• USBR — US Bureau of Reclamation
• CNCLS — Cancels
• WSHFT — Wind Shift
• SELY — Southeasterly
• VVP — Volume Velocity Processing
• GRID — Processed meteorological data in the form of grid point values
• NLDN — National Lightning Detection Network
• DFCLTY — Difficulty
• CMPLX — Complex
• LMTS — Limits
• SMTH — Smooth
• APCHS — Approaches
• ENERN — East-northeastern
• PROC — Procedure
• ERYR — Earlier
• NSC — Nil Significant Cloud
• ADVN — Advance
• PIREP — Pilot Report
• FRMG — Forming

• IMPR — Improve
• CAFTI — Committee on Analysis and Forecast Techniques Implementation
• CLEICEFBO — Great Lakes Ice Outlook for the Opening of Navigation
• NEXRAD — NEXt generation of weather RADar
• ICG — Icing
• INCRGLY — Increasingly
• REQSTD — Requested
• SEPN — Separation
• EXC — Except
• SUB — Substitute
• VER — Vertical
• BRF — Brief
• OTW — Owning The Weather
• PEN — Peninsula
• LMTG — Limiting
• ICGIP — Icing in Precipitation
• NAVPACMETOCCEN — Naval Pacific Meteorology and Oceanography Center, Pearl Harbor, Hawaii
• TSFR — Transfer
• LK — Lake
• NEXRAD — Next-Generation Weather Radar (NWS)
• DPNG — Deepening
• LTG — Lightning
• AC — Anticipated Convection Outlook
• AWOS — Automated Weather Observation System
• CLRG — Clearing
• JMA — Japanese Meteorological Agency
• ELNGTD — Elongated
• EXCLVLY — Exclusively
• NOPAC — Northern Pacific
• DIF — Diffuse
• SVG — Serving
• MCIDAS — Man-computer Interactive Data Access System
• DMSHD — Diminished
• INCLG — Including
• PARL — Parallel
• DSTBLZG — Destabilizing
• DVRGNC — Divergence
• SHSN — Snow Showers (METAR Code)
• CTSKLS — Catskills
• DSIPTD — Dissipated
• COM — Communications Society
• TT — Teletype
• HPD — Hourly Precipitation Data
• FEW — Few
• MTN — Mountain
• APLCNS — Appalachians
• APRNT — Apparent
• TRMTD — Terminated
• VRBL — Variable
• DWOPER — Dynamic Wave Routing Model

• AOA — At or Above
• EB — Eastbound
• MAN — Manitoba
• INTSFYD — Intensified
• FG — Fog Gun
• CIGS — Ceilings
• MOD — moderate dysplasia
• CUF — Cumuliform
• VRB — Variable
• FNCTN — Function
• VRY — Very
• INDCD — Indicated
• CNVGNC — Convergence
• DCRGLY — Decreasingly
• LPATS — Lightning Position And Tracking System
• TAWS — Tactical Acquisition Weather Software
• VRT MOTN — Vertical Motion
• IIDA — Integrated Icing Diagnostic Algorithm
• INDCG — Indicating
• AMPLTD — Amplitude
• HRL — The Hydrological Research Laboratory
• CPC — Climate Prediction Center (NWS Center)
• CNTRL — Central
• ASC — Aviation Services Coordinator
• ASC — Ascent to
• HMD — Hemispheric Map Discussion
• RQR — Require
• NWSRFS V5.0 — National Weather Service River Forecast Model Version 5
• VIL — Vertically Integrated Liquid
• SNBNK — Snow bank
• DGNLLY — Diagonally
• ULJ — Upper-Level Jet
• CLEICEFBO — Great Lakes Freeze-Up Outlook
• DBNET — Distributed Brokered Networking
• MAREP — Marine Reporting Program
• FNTS — Fronts
• SSWWD — South-Southwestward
• USWB — United States Weather Bureau
• HDSVLY — Hudson Valley
• DPND — Deepened
• DSIPTS — Dissipates
• APSG — After passing
• MOVMT — Movement
• RSTRG — Restricting
• EXTRMLY — Extremely
• FILG — Filling
• DVLPG — Developing
• SP — Snow Pellets
• ACLTD — Accelerated
• DSTBLZD — Destabilized

• MDLS — Models
• WAFC — World Area Forecast Center
• SPLNS — Southern Plains
• MULTILVL — Multi-level
• SKED — Schedule
• APLCN — Appalachian
• SASK — Saskatchewan
• CGEN — Convective Sigmet Generation
• EXTD — Extend
• ETA — estimating arrival
• INTRP — Interrupt
• NEW ENG — New England
• INTRMTRGN — Intermountain Region
• M — Mesocyclone
• ACPY — Accompany
• WIDA — Weather Impact Decision Aids
• RPTG — Repeating
• DELMARVA — Delaware-Maryland-Virginia
• MBRFC — Missouri Basin River Forecast Center
• AMD — amend
• FOS — FAMILY OF SERVICES
• ENHNCD — Enhanced
• TROF — Trough
• NEXRAD — Next Generation Weather Radar
• OCNLY — Occasionally
• LFM — Limited Fine Mesh
• GSTS — Gusts
• CCSL — Cirrocumulus Standing Lenticular
• ACRS — Across
• VCTR — Vector
• OTP — On Top
• FCSTS — Forecasts
• ENHNCMNT — Enhancement
• DISREG — Disregarding
• RPRTD — Reported
• LFTG — Lifting
• ENHNCS — Enhances
• OCFNT — Occluded Front
• NWSTC — National Weather Service Training Center
• FLG — Flashing
• AGRS — Agrees
• INDCS — Indicates
• BGN — Begin
• OUTFLO — Outflow
• ASAPTRAN — The software component of ASA
• ENELY — East-northeasterly
• ESERN — East-Southeastern
• PGTSND — Puget Sound
• RTVS — Real Time Verification System
• INTMD — Intermediate

• GEOREF — Geographical reference
• WAFS — World Area Forecast System
• ADVIS — Headwater Advisory Program
• PCPN — Precipitation
• FAH — Fahrenheit
• FCEXEC — A component of the NWSRFS FCST Program
• BAMS — Bulletin of the American Meteorological Society
• TSSN — Thundersnow
• ASB — Aviation Support Branch
• HVYR — Heavier
• INCRG — Increasing
• IOS — Integrated Operational Services
• PC-GRIDDS — Pc-Gridded Interactive Display and Diagnostic System
• SXN — Section
• FRZG — Freezing
• DWNDFTS — Downdrafts
• PS — Plus
• DURN — Duration
• ROD — Rate Of Descent
• NERN — Northeastern
• CNTYS — Counties
• SCTR — Sector
• TROP — Tropopause
• ARFOR — Area Forecast
• I — See inphase
• RE — Regard
• DWPNTS — Dewpoints
• LVLS — Levels
• MPL — Max Parcel Level
• ATDTDCS — Automated Tone Dial Telephone Data Collection System
• ET — Electronic Technician
• OVNGT — Overnight
• DRFTD — Drifted
• NFLD — Newfoundland
• TSTM — Thunderstorm
• IFLOWS — The Integrated Flood Observing and Warning System
• ERY — Early
• DIGG — Digging
• GRDLY — Gradually
• CLKWS — Clockwise
• SUF — Sufficient
• AMP — Amplify
• INTSTY — Intensity
• ENDG — ending
• WTU — Weather Technology Unit
• INBD — Inbound
• GRTLKS — Great Lakes
• WLY — Westerly
• IPV — Improve
• OSV — Ocean Station Vessel

• FAWS — Flight Advisory Weather Service
• FQTLY — Frequently
• FRST — Frost
• SMTM — Sometime
• ENEWD — East-northeastward
• HND — Hundred
• METAR — Meteorological Aviation Report
• EXTDD — Extended
• BDA — Bermuda Island
• WARP — Weather and Radar Processor
• MIDN — Midnight
• SQAL — Squall
• TVS — Tornado Vortex Signature
• DNDFTS — Downdrafts
• CBMAM — Cumulonimbus Mammatus
• INTSFCN — Intensification
• CLA — Clear type of ice formation
• FAX — Facsimile Transmission
• OCLDD — Occluded
• EXTDS — Extends
• RL — Report Leaving
• NNE — North-North-East
• SST — Sea surface temperature
• ENHNCG — Enhancing
• FVT — Forecast Verification Tool
• RPLC — Replace
• TCNTL — Transcontinental
• ROSA — Remote Observing System Automation
• CLDS — Clouds
• LEVEL — Level
• SLY — Southerly
• RCMD — Recommend
• MOVS — Moves
• ELSW — Elsewhere
• PPI — Plane Position Indicator
• PQPF — probabilistic quantitative precipitation forecast
• ARCUS — Arc Cloud
• STAGN — Stagnation
• NCWF — National Convective Weather Forecast
• NADIN — National Airspace Data Interchange Network
• LRGST — Largest
• PRVDS — Provides
• DIV — Divert
• MNLND — Mainland
• RSTR — Restrict
• QUE — Quebec
• HLYR — Haze Layer Aloft
• REPLG — Replacing
• DISCD — Discontinued
• EWD — Eastward

• WED — Wednesday
• TRML — Terminal
• MEGG — Merging
• ICGIC — Icing in Clouds
• DNR — Department of Natural Resources
• GENLY — Generally
• WK — Weak
• VFYD — Verified
• SAMEX — Storm and Mesoscale Ensemble Experiment
• DSNDG — Descending
• PSND — Positioned
• ATWIS — Advanced Transportation Weather Information System
• SERN — Southeastern
• CNVTVLY — Convectively
• INSTBY — Instability
• RGL — Regional Model
• EXP — Expect
• EXTSV — Extensive
• DVLPS — Develops
• LRGLY — Largely
• UVM — Upward Vertical Motion
• NRLY — Nearly
• ER — Here
• FRI — Friday
• BLKHLS — Black Hills
• TWI — Twilight
• MESO — Mesoscale
• AMS — American Meteorology Society
• WND — Wind
• COMPARG — Comparing
• LGWV — Long Wave
• UPR — Upper
• HSA — Hydrologic Service Area
• WCM — Warning Coordination Meteorologist
• EXTDG — Extending
• U/S — Unserviceable
• NAVMETOCCOM — Naval Meteorology and Oceanography Command
• SUG — Suggest
• TIL — Until
• LV — Leaving
• NATA — National Air Transportation Assoc.
• VWP — Velocity Azimuth Display Wind Profile
• MARD — Modernization and Restructuring Demonstration
• FIC — Flight Information Center
• INTST — Intensity
• INTVL — Interval
• WRS — Weather Reconnaissance Squadron
• MTW — Mountain Waves
• INVRN — Inversion
• CAAM — Computer Assisted Artillery Meteorology

• ZE — Equivalent Radar Reflectivity
• XS — Atmospherics
• THRFTR — Thereafter
• CDFS — Cloud Depiction and Forecast System
• ARAM — Aviation, Range and Aerospace Meteorology
• WDSPR — Widespread
• DRFTS — Drifts
• OFCM — Office of the Federal Coordinator for Meteorological Services and Supporting Research
• CAWIS — Committee for Automated Weather Information Systems
• FDR — Fire Danger Rating
• FLWG — Following
• PROGS — Forecasts
• MCIDAS — Man Computer Interactive Data Acquisition System
• NWLY — Northwesterly
• DGNL — Diagonal
• HURCN — Hurricane
• GRTR — Greater
• DVLPMT — Development
• HEL — Helicopter
• NML — Normal
• PE — Ice pellets
• STLT — Satellite
• TR — Track
• OBST — Obstacle
• GS — Small hail and snow pellets
• PSG — Passing
• IOVC — In Overcast
• XTRM — Extreme
• RFD — Rear Flank Downdraft
• CCLKWS — Counter-Clockwise
• THDR — Thunder
• DMCC — DOE Meteorological Coordinating Council
• STDY — Steady
• AGRD — Agreed
• PRI — Primary
• TPC — Tropical Prediction Center
• RMN — Remain
• NMBR — Number
• MWAVE — Mountain Wave Algorithm
• ISOL — Isolate
• ELNGT — Elongate
• PROB — probability
• ALTA — Alberta
• UNSTBL — Unstable
• ADVCT — Advect
• RPRTS — Reports
• SC — Stratocumulus (cloud formation)
• THTNG — Threatening
• DOM — Domestic
• HVY — Heavy

• RAWS — Remote Automatic Weather Station
• AHD — Ahead
• SMOOS — Shipboard Meteorological and Oceanographic Observing Sensor
• BAJA — Baja California
• CWF — Combat Weather Flight
• XPC — Expect
• LCTN — Location
• ADVS — Advisory Service
• CBOFS — Chesapeake Bay Oceanographic Forecasting System
• CWSU — Center Weather Service Unit
• DSTBLZS — Destabilizes
• T — Thunder
• LDADS — Local Data Acquisition and Dissemination System
• ATMU — AIR TRANSPORTABLE MOBILE UNIT
• EPD — Extended Forecast Discussion
• RE — Recent
• INDEF — Indefinite
• ESTAB — Establish
• VCY — Vicinity
• FCMSSR — Federal Committee for Meteorological Services and Supporting Research
• FNT — Front
• GLFALSK — Gulf of Alaska
• ET — Echo Tops
• HDWND — Head Wind
• MSTLY — Mostly
• SS — Sunset
• LO — Low
• GTG — Graphical Turbulence Guidance
• DTRT — Deteriorate
• LYR — Layer
• NAWPC — National Aviation Weather Program Council
• PVLG — Prevailing
• SPD — Speed
• SBND — South bound
• SSE — South-Southeast
• NB — NorthBound
• MC — Meteorological Codes
• NBND — Northbound
• BTL — Between layers
• RSN — Reason
• DCR — Decrease
• MRGL — Marginal
• WRNG — Warning
• TFU — Theater Forecast Unit
• KCFB — Kansas City Federal Building
• LCTD — Located
• RPLCD — Replaced
• IMPL — Impulse
• SGFNT — Significant
• REPLD — Replaced

• UVVS — Upward Vertical Velocities
• AMDAR — Automatic Meteorological Data And Reporting
• NCCF — NOAA Central Computer Facility
• ALG — Along
• MLCAPE — Mean Layer CAPE
• DSCNT — Descent
• NGM — Nested Grid Model
• ENSO — El Niño and Southern Oscilation
• JCTN — Junction
• PWO — Public Severe Weather Outlook
• QTP — Quality Through Partnership
• MON — Monday
• DFUS — Diffuse
• DRG — During
• INTSFY — Intensify
• COOR — Co-ordinate
• BPAA — Business Pilots Aircraft Association
• RR — Report Reaching
• MS — Minus
• DP — Deep
• RSTRD — Restricted
• RDVLP — Redevelop
• PRVD — Provide
• MULI — Most Unstable Lifted Index
• WID — Width
• WKEND — Weekend
• TDO — Tornado
• MXD — Mixed
• MDTLY — Moderately
• LKS — Lakes
• BRS — Branches
• EXPC — Expect
• SHEF — Standard Hydrologic Exchange Format
• PRVDG — Providing
• BGNS — Begins
• SCTD — Scattered
• SUPS — Supplies
• OVTK — Overtake
• SCT — Scattered
• VA — Volcanic Ash
• DRZL — Drizzle
• DMGD — Damaged
• VLNTLY — Violently
• WINT — Winter
• SLO — Slow
• DSIPT — Dissipate
• STBL — Stable
• SLGT — Slight
• RPLCG — Replacing
• ROTD — Rotated

• MST — Meteorological Support Teams
• STNS — Stations
• SIMUL — Simultaneous
• SEL — Severe Thunderstorm Watch, Tornado Watch
• CASCDS — Cascades
• FMT — Format
• BRKS — Breaks
• BFDK — Before Dark
• MTU — Metric units
• OHD — Overhead
• LWR — Lower
• HRZN — Horizon
• LMTD — Limited
• WVS — Waves
• SWB — South-Westbound
• PPINE — Plan Position Indicates No Echoes
• SHRT — Short
• AMDG — Amending
• IFFDP — International Flight Folder Documentation Program
• CRP — Critical Rainfall Probability
• NNEWD — North-Northeastward
• FIAS — Flight Information Advisory Service
• DEV — Deviation
• INDC — indicate
• MRTM — Maritime
• THNST — Thinnest
• SUN — Sunday
• CVRG — Covering
• NRW — Narrow
• RPRTG — Reporting
• RPD — Rapid
• HWVR — However
• NACA — National Advisory Committee on Aeronautics
• ESTS — Estimates
• RHINO — RHI not operative
• NWWS — NOAA Weather Wire System
• SPDS — Speeds
• RUFLY — Roughly
• RAMSDIS — RAMM Advanced Meteorological Satellite Demonstration and Interpretation System
• CHGG — Changing
• UNREL — Unreliable
• RMNS — Remains
• VORT — Vorticity
• HCVIS — High Clouds Visible
• SAOS — Surface Observations
• APPR — Appear
• KM — Kilometers to Miles
• NMOC — National Meteorological Operations Centre
• EXCP — Except
• UNUSBL — Unusable

• NNWWD — North-Northwestward
• BD — Blowing Dust
• GNDFG — Ground Fog
• MULT — Multiple
• VGF — Virtual Graphics File
• SPD — speed of pupillary dilation
• UNRSTD — Unrestricted
• LN — Line Network
• REPLS — Replaces
• MMS — METEOROLOGICAL MEASURING SYSTEM
• WNWWD — West-Northwestward
• GOM — Global Ocean Model
• SCND — Second
• ZL — Freezing Drizzle
• NESDIS/SAB — National Environmental Satellite, Data and Information Service/Satellite Analysis Branch
• USWRP — United States Weather Research Program
• STNRY — Stationary
• FOUS — Forecast Output United States
• SLT — Sleet
• GLFCAL — Gulf of California
• WKNG — Weakening
• FLG — Falling
• STP — Storm Total Precipitation
• UNSBL — Unseasonable
• NWSEO — National Weather Service Employees Organization
• LAN — Inland
• WSP — Weather Systems Processor
• MMS-P — Meteorological Measuring System-Profiler
• SAP — As soon as possible
• ENCTR — Encounter
• UNEC — UnNECessary
• OSD — Office of Systems Development
• TWEB — Transcribed Weather Broadcast
• NOWS — NVG Operations Weather Software
• TEMPO — Temporary
• INCLD — Included
• DURG — During
• OCWWS — Office of Climate, Water and Weather Services
• ISOLD — Isolated
• VDUC — VAS Data Utilization Center
• OU — University of Oklahoma
• RESTR — Restrict
• ADVCTS — Advects
• OFSHR — Offshore
• NWSH — National Weather Service Headquarters
• FROSFC — Frontal Surface
• URG — Urgent
• WETM — Weather Team
• THTNS — Threatens
• WDI — Wind Direction Indicator

• DUR — Duration
• WSFO — Weather Service Forecast Office
• HOL — Holiday
• TAMU — Tropical Aviation Meteorological Unit
• SUPG — Supplying
• DSNT — Distant
• UNRELBL — Unreliable
• SIGMET — Significant Meteorlogical Information
• OCNL — Occasional
• RAG — Ragged
• RPLCS — Replaces
• RSMC — Regional/Specialized Meteorological Centers
• PSBL — Possible
• YDA — Yesterday
• NOWCAST — Short Term Forecast
• PVL — Prevail
• ESNTL — Essential
• JTSTR — Jet Stream
• QPF — Quantitative Precipitation Forecast
• OCRS — Occurs
• YLSTN — Yellowstone
• BRKSHR — Berkshire
• SNWFL — Snowfall
• CVRD — Covered
• SAO — Surface observation
• SSWLY — South-Southwesterly
• RGD — Ragged
• CS — Combined Shear
• CG — Cloud-Ground Lightning
• FLN — National Flood Summary
• TRNSPG — Transporting
• ESF — Flood Potential Outlook
• MLTLVL — Melting Level
• INLD — Inland
• ETC — Echo Tops Contour
• LWRG — Lowering
• STNR — Stationary
• DLA — Delay
• SPOT — Spot Wind
• STFR — Stratus Fractus
• DCRG — Decreasing
• RVI — River Ice Statement
• MAY — Mayaro
• CHGD — Changed
• TSIP — Thundersleet
• WST — Weather Support Team
• ARSI — Atmospheric Research System, Inc.
• IWRS — Improved Weather Reconnaissance System
• MCD — Mesoscale Discussion
• CW — Cloud-Water Lightning

• EMWIN — Emergency Managers Weather Information Network
• CAPPI — CONSTANT ALTITUDE PPI
• FFA — Flood Frequency Analyses
• G — Gust
• DPNS — Deepens
• GRAD — Gradient
• FG — Foggia
• THD — Thunderhead
• PLNS — Plains
• SUPR — Superior
• NMRS — Numerous
• MDS — Meteorological Distribution System
• RES — Reserve
• CHGS — Changes
• RMTN — Regional Meteorological Telecommunications Network
• SVRL — Several
• TPG — Topping
• METMF — Meteorological Mobile Facility
• RCRD — Record
• PROG — Forecast
• RCS — Reflectivity Cross Section
• INCRD — Increased
• DWSW — Deployable Weather Satellite Workstation
• TOFS — Tactical Observing & Forecasting System
• WIMS — Weather Information Management System
• CSTL — Coastal
• NWR — NOAA Weather Radio
• EPSCOR — Experimental Program for the Stimulation of Competitive Research
• BNTH — Beneath
• DFCLT — Difficult
• NAOS — North American Atmospheric Observing System
• NWRN — Northwestern
• BCMG — Becoming
• VLCTY — Velocity
• AFCT — affect
• WKDAY — Weekday
• ETIM — ELAPSED TIME
• DFRS — Differs
• NBRHD — Neighborhood
• NAVTEX — Navigational Telex
• VFYG — Verifying
• WL — will
• RVR — River Recreation Statement
• SPRD — Spread
• VCOT — VFR Conditions on Top
• LWRD — Lowered
• LIVV — Lifted Index Vertical Velocity
• VFYS — Verifies
• USACE — Unites States Army Corps of Engineers
• GLFSTLAWR — Gulf of St. Lawrence

• PIBAL — pilot-balloon observation
• METMFR — Meteorological Mobile Facility Replacement
• CMFC — Coordinating METOC Forecast Center
• ZFP — Zone Forecast Product
• TRIB — Tributary
• SSEWD — South-Southeastward
• RADAT — RADiosonde Observation Data
• SEV — Severe
• UNSTDY — Unsteady
• NIL — None
• SPRL — Spiral
• CPHC — Central Pacific Hurricane Center
• ASIST — Aviation Safety Investment Strategy Team
• FNTGNS — Frontogenesis
• SHARP — Skew-T Hodograph Analysis and Research Program
• DLAD — Delayed
• RCHG — Reaching
• SNW — Snow
• SWAFS — Space Weather Analysis and Forecasting System
• NEWD — Northeastward
• OCRD — Occurred
• TFS — Tactical Forecast System
• PNS — Public Information Statement
• CAPS — Center for Analysis and Prediction of Storms
• VAAC — Volcanic Ash Advisory Centers
• CONTG — Continuing
• FRWF — Forecast Wind Factor
• HMT — Hydrometeorological Technicians
• CWS — Combat Weather Squadron
• OCRG — Occurring
• HLF — Half
• LIS — Lifted indices
• STM — Storm
• UKMETO — United Kingdom Meteorological Office
• FTHR — Further
• EMERG — Emergency
• CRNRS — Corners
• SB — Southbound
• AQI — Air Quality Statement
• DSNDS — Descends
• SWLG — Swelling
• DVLP — Develop
• TUE — Tuesday
• SSERN — South-Southeastern
• BGNG — Beginning
• WRS — Worse
• SFD — STATE FORECAST DISCUSSION
• WRMFNT — Warm Front
• ARND — Around
• NS — Nimbostratus

• VSBYDR — Visibility Decreasing Rapidly
• WDSPRD — Widespread
• CYCLGN — Cyclogenesis
• SYNOP — Synoptic
• OVTKG — Overtaking
• HLSTO — Hailstones
• SPS — Special (Weather) Statement
• SSWRN — South-Southwestern
• HYR — Higher
• PCD — Proceed
• LTLCG — Little Change
• LGTR — Lighter
• RLTV — Relative
• HP — High Precipitation
• GRDL — Gradual
• TWRG — Towering
• SRY — Secondary
• NNWRN — North-Northwestern
• VCS — Velocity Cross Section
• SQSN — Snow Squalls
• OMTNS — Over Mountains
• PMD — Prognostic Discussion
• SOO — Scientific Operations Officer
• HUREP — Hurricane Report
• FNTLYS — Frontolysis
• CWF — Coastal Marine Forecasts
• CNIF — Calibration Network Information Files
• SNST — Sunset
• STWDSR — Surface Transportation Weather Decision Support Requirements
• WKN — Weaken
• CCLDS — Clear of Clouds
• RGLR — Regular
• GICG — Glaze Icing
• CWA — Center Weather Advisory - CWSU
• M — Mach number
• HPA — Hectapascal
• HIGH — HIGHLAND
• REQS — Requests
• OCLDG — Occluding
• CHC — Chance
• HDFRZ — Hard Freeze
• SBSDNC — Subsidence
• TRBL — Trouble
• DISC — Discontinue
• EMBDD — Embedded
• BCMS — Becomes
• SRRS — Systems Record Retention System
• DMGG — Damaging
• NPRA — National Performance Results Act
• SIGWX — Significant Weather

• ENE — east-northeast
• HV — Have
• IDS — International Data Service
• MOV — Move
• TMPRY — Temporary
• SHARS — Subtle Heavy Rainfall Signature
• DNWND — Down wind
• CLRS — Clears
• HIC — Hydrologist In Charge
• RMND — Remained
• CSC — Combined Shear Contour
• NIDS — NEXRAD Information Dissemination Service
• PVLS — Prevails
• AHOS — Automatic Hydrologic Observing System
• INTR — Interior
• SPRDS — Spreads
• PLVL — Present Level
• SFP — State Forecast Product
• UPSTRM — Upstream
• DNS — Dense
• UPSLP — Upslope
• DCRS — Decreases
• OVTKS — Overtakes
• HUD — Housing and Urban Development, U.S. Department of
• ITT — Information Technology Team
• PRBLTY — Probability
• MESO — Mesoscale Convective Unit
• MAY — Maysville
• UNSTL — Unsettle
• NWP — Numerical Weather Predication
• IC — In-Cloud Lightning
• TRPCL — Tropical
• OCLD — Occlude
• AFT — After
• FFA — Flood
• TOVC — Top of Overcast
• TRMT — Terminate
• XTRMLY — Extremely
• SA — Surface observation
• ROB — Radar Coded Observation
• NIDS — NEXRAD Information Distribution Service
• ROT — Rotate
• PO — Dust devils
• CLDNS — Cloudiness
• OPS-II — Operational Weather Squadron Production System II
• LINUX — UNIX-like computer operating system
• TRMTG — Terminating
• RGNS — Regions
• CNVG — Converge
• SSW — South Southwest

• AWT — Awaiting Test
• ICE — icing
• CCA — Corrected meteorological message
• R — Reduction
• PRJMP — Pressure Jump
• SHLW — Shallow
• VSA — By Visual Reference to the Ground
• RVSG — Revising
• SDM — Station Duty Manual
• ERD — Excessive Rainfall Discussion
• TURBC — Turbulence
• SBSDS — Subsides
• RDVLPG — Redeveloping
• NWSTG — National Weather Service Telecommunications Gateway
• LSQ — Line Squall
• PWS — Precipitable Waters
• MCDW — Monthly Climatic Data of the World
• ROTG — Rotating
• DCRD — Decreased
• ORGPHC — Orographic
• EVE — Evening
• CHCS — Chances
• WSWWD — West-Southwestward
• GDS — GeoMet Data Services, Inc.
• HLTP — Hilltop
• NWD — Northward
• HWO — Severe Weather Potential Statement
• HLS — Hurricane Local Statement
• SDM — Senior Duty Meteorologist
• VSBYIR — Visibility Increasing Rapidly
• SUPSDG — Superseding
• GSTY — Gusty
• WPLTO — Western Plateau
• INTS — intense
• DWPNT — Dewpoint
• FRMN — Formation
• STG — Strong
• ASMD — As amended
• LO — Lower Order
• PIBALS — Pilot Balloon Reports
• QPFERD — Nmc Excessive Rainfall Discussion
• MRF — Medium-Range Forecast Model
• SSHP — Site Specific Hydrologic Prediction System
• SLPG — Sloping
• LDM — Local Data Manager
• AMDD — Amended
• DLTG — Deleting
• PDMT — Predominant
• PSH — Preliminary Tropical Storm Report
• NPSU — National Public Service Unit

• NPRS — Nonpersistent
• MSTR — Moisture
• EFCT — Effect
• SA — Sand
• WEA — Weather
• WINDS — Weather Information and Display System
• SWD — Southward
• CSDRBL — Considerable
• PVLD — Prevailed
• OHP — One-Hour Rainfall Rate
• SND — Sanderson
• SMA — Soil Moisture Accounting Model
• QPFSPD — Nmc Special Precipitation Discussion
• WKNS — Weakens
• XTND — Extend
• NWB — North-westbound
• IPVG — Improving
• MRNG — Morning
• TSHWR — Thundershower
• RDVLPMT — Redevelopment
• NCWD — National Convective Weather Diagnostic
• PPSN — Present Position
• COR — Corrected/Correction
• DKTS — Dakotas
• AMS — Air mass
• GFA — Graphical Area Forecast
• WTRS — Waters
• DU — Dust
• TWR — Tactical Weather Radar
• XCP — Except
• ESS — Water Supply Outlook Product
• STGR — Stronger
• TDU — Techniques Development Unit
• WNDS — Winds
• MISG — Missing
• PRC — Planning and Research Corporation
• PRSTS — Persists
• SELS — SEvere Local Storms Unit
• SWRN — Southwestern
• PDS — Periods
• TNDCYS — Tendencies
• THN — Thin
• XTNDG — Extending
• VRG — Veering
• WNWRN — West-Northwestern
• HIER — Higher
• BATROP — Barotropic
• TNDCY — Tendency
• TCE — Tropical Cyclone Position Estimate
• UNSATFY — Unsatisfactory

• SLGTLY — Slightly
• SOO — Scientific and Operations Officer
• STMS — Storms
• WSR-88D — Weather Surveillance Radar - 1988 Doppler
• NNERN — North-Northeastern
• HPC — Weather Prediction Center
• TDA — Today
• TRMTS — Terminates
• WWS — Severe Weather Watches
• MDT — Moderate
• RTRN — Return
• WRMST — Warmest
• UWNDS — Upper Winds
• SMLR — Smaller
• TWDS — Towards
• SMW — Special Marine Warning
• PSCZ — Puget Sound Convergence Zone
• RSTRS — Restricts
• ROTS — Rotates
• CVRS — Covers
• NWSO — National Weather Service Office
• TACWX — Tactical weather
• QN — Question
• UNA — Unable
• THTN — Threaten
• SHLD — SHieLD
• RDGG — Ridging
• DUC — Dense Upper Cloud
• DPR — Deeper
• EBND — East bound
• CST — Coast
• TAP — Transition Aviation Project
• TRKG — Tracking Corporation (OTC Bulletin Board [OTCBB])
• SUNYA — State University of New York, Albany
• WFOS — Weather Forecast Offices
• WRM — Warm
• WSWRN — West-Southwestern
• PTNLY — Potentially
• ESP — Extended Streamflow Prediction
• PTNS — Portions
• QPFPFD — Ncep Precipitation Forecast Discussion
• EIF — Enhanced IFLOWS Format
• THNR — Thinner
• VSB — Visible
• LRGR — Larger
• RLBL — Reliable
• ESE — East-southeast
• OCLDS — Occludes
• CWA — County Warning Area
• SUGS — Suggests

• WSTCH — Wasatch Range
• PRIND — Present indications are
• REP — Report
• RCMDS — Recommends
• SCSL — Standing lenticular stratocumulus
• OPA — Opaque, white type of ice formation
• THTND — Threatened
• RUF — Rough
• SMTHR — Smoother
• NL — No layers
• WKST — Weakest
• SVR — Severe
• CNVTN — Convection
• SCC — Tropical Storm Summary
• CSDR — Consider
• SRR — Storm Relative Mean Radial Velocity Region
• USBL — Usable
• RCVS — Receives
• SEB — South-eastbound
• MET — Meteorology
• FLS — River Flood Statement
• WTSPTS — Waterspouts
• CSI — Critical Success Index
• USFS — U.S. Forest Service
• ENTR — Entire
• WIE — With Immediate Effect
• FIP — Forecast Icing Potential
• CR — Composite Reflectivity
• VARN — Variation
• SSELY — South-Southeasterly
• THKST — Thickest
• RCHS — Reaches
• APPRS — Appears
• KU — University of Kansas
• RNFL — Rainfall
• STI — Storm Tracking Information
• TWS — Tropical Weather Summary
• POP — Precipitation Probability
• WRMG — Warming
• SWA — Severe Weather Analysis
• TRW — Thunderstorm
• MX — Mixed Type of Ice Formation
• VRS — Veers
• PLTO — Plateau
• TSRA — Thunderstorm with rain
• G — Green time
• OVRNG — Overrunning
• DS — Dust Storm
• SRM — Storm Relative Mean Radial Velocity Map
• TYP — Type of Aircraft

• UKMET — United Kingdom Meteorological Agency
• JWIS — Joint Weather Impacts System
• SWR — State Weather Roundup
• SMTHST — Smoothest
• NWFO — National Weather Service Forecast Office
• QSTNRY — Quasistationary
• XTNDD — Extended
• TWEB — Transcribed Weather En route Broadcast
• NOW — Short Term Forecast
• TSHWRS — Thundershowers
• SWI — Showalter Index
• VOMIT — VIL Of the Moment In Time
• OCR — Occurrence
• WRMFNTL — Warm Frontal
• DSA — Special Tropical Disturbance Statement
• HIC — Hydrometeorological Information Center
• SPKL — Sprinkle
• PSG — Passage
• NSH — Nearshore Lake Forecast
• PFD — QPF Discussion
• MOS — Model Output Statistics applications
• HIGH — High Core Threshold
• MOGR — Moderate, or Greater
• HSB — Hydrologic Systems Branch in the Office of Hydrology
• WSDDM — Weather Support to Deicing Decision Making
• REC — Recreation Report
• PVLT — Prevalent
• LP — Low Precipitation
• RSIS — Rs Information Services, Inc.
• CBS — Cumulonimbi
• XPCG — Expecting
• TRSN — Transition
• WSOM — National Weather Service Operations Manual
• N-AWIPS — National Centers-AWIPS
• MET — Meteorological Teams
• SQLN — Squall Line
• SX — Stability Index
• SWP — Severe Weather Probability
• SPF — Probability of Tropical Cyclone Conditions
• SPECIAL — Special Meteorological Report
• WBND — West Bound
• WKR — Weaker
• SWS — Severe Weather Statement
• DTRTS — Deteriorates
• SCS — Spectrum Width Cross Section
• TCU — tropical cyclone update
• WER — WEAK ECHO REGION
• UN — Unable
• TL — Till
• TCP — Public Tropical Cyclone Advisory

• TWO — Tropical Weather Outlook
• DALGT — Day light
• TCM — Tropical Cyclone Forecasts/Advisory
• SNOTEL — Snow Telemetry
• SNOINCR — Snow increase
• TEN — Theta-e Index
• THP — Three-Hour Rainfall Rate
• SWWD — Southwestward
• SLOR — Slower
• SLS — Watch Redefining Statement
• TS — Thunderstorm without precipitation
• WRMR — Warmer
• TSQLS — Thundersqualls
• XPCS — Expects
• VVSTORM — model-based convection algorithm
• SPA — Subtropical Cyclone Public Advisory
• TEND — Trend forecast

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