STORMFAX® presents...
Contractions used by the National Weather Service

 ABNDT - Abundant
 ABNML - Abnormal
 ABT - About
 ABV - Above
 AC - Convective Outlook
 ACCAS - Altocumulus Castellanus
 ACCUM - Accumulate
 ACFT - Aircraft
 ACLT - Accelerate
 ACLTD - Accelerated
 ACLTG - Accelerating
 ACLTS - Accelerates
 ACPY - Accompany
 ACRS - Across
 ACSL - Altocumulus Standing Lenticularus
 ACTV - Active
 ACTVTY - Activity
 ACYC - Anticyclone
 ADJ - Adjacent
 ADL - Additional
 ADQT - Adequate
 ADQTLY - Adequately
 ADRNDCK - Adirondack
 ADVCT - Advect
 ADVCTD - Advected
 ADVCTG - Advecting
 ADVCTN - Advection
 ADVCTS - Advects
 ADVN - Advance
 ADVNG - Advancing
 ADVY - Advisory
 ADVYS - Advisories
 AFCT - Affect
 AFCTD - Affected
 AFCTG - Affecting
 AFDK - After dark
 AFOS - Automated Field Operations System
 AFT - After
 AFTN - Afternoon
 AGL - Above ground level
 AGN - Again
 AGRD - Agreed
 AGRS - Agrees
 AGRMT - Agreement
 AHD - Ahead
 AK - Alaska
 AL - Alabama
 ALF - Aloft
 ALG - Along
 ALGHNY - Allegheny
 ALQDS - All quadrants
 ALSTG - Altimeter setting
 ALTA - Alberta
 ALTHO - Although
 ALTM - Altimeter
 ALUTN - Aleutian
 AMD - Amend
 AMDD - Amended
 AMDG - Amending
 AMDT - Amendment
 AMP - Amplify
 AMPG - Amplifying
 AMPLTD - Amplitude
 AMS - Air mass
 AMT - Amount
 ANLYS - Analysis
 ANS - Answer
 AOA - At or above
 AOB - At or below
 AP - Anomalous Propagation
 APCH - Approach
 APCHG - Approaching
 APCHS - Approaches
 APLCN - Appalachian
 APLCNS - Appalachians
 APPR - Appear
 APPRG - Appearing
 APPRS - Appears
 APRNT - Apparent
 APRNTLY - Apparently
 APRX - Approximate
 APRXLY - Approximately
 AR - Arkansas
 ARND - Around
 ARPT - Airport
 ASAP - As soon as possible
 ASL - Above Sea Level
 ASMD - As amended
 ASSOCD - Associated
 ASSOCN - Association
 ATLC - Atlantic
 ATTM - At this time
 ATTN - Attention
 AVBL - Available
 AVG - Average
 AVN - Aviation Model
 AWT - Awaiting
 AZ - Arizona
 AZM - Azimuth

 BACLIN - Baroclinic
 BAJA - Baja California
 BATROP - Barotrophic
 BC - British Columbia
 BCH - Beach
 BCKG - Backing
 BCM - Become
 BCMG - Becoming
 BCMS - Becomes
 BD - Blowing dust
 BDA - Bermuda
 BDRY - Boundary
 BFDK - Before dark
 BFR - Before
 BGN - Begin
 BGNG - Beginning
 BGNS - Begins
 BHND - Behind
 BINOVC - Breaks in overcast
 BKN - Broken
 BLD - Build
 BLDG - Building
 BLDS - Builds
 BLDUP - Buildup
 BLKHLS - Black Hills
 BLKT - Blanket
 BLKTG - Blanketing
 BLKTS - Blankets
 BLO - Below
 BLZD - Blizzard
 BN - Blowing sand
 BND - Bound
 BNDRY - Boundary
 BNDRYS - Boundaries
 BNTH - Beneath
 BR - Branch
 BRG - Branching
 BRS - Branches
 BRF - Brief
 BRK - Break
 BRKG - Breaking
 BRKHIC - Breaks in higher clouds
 BRKS - Breaks
 BRKSHR - Berkshire
 BRKSHRS - Berkshires
 BRM - Barometer
 BS - Blowing snow
 BTWN - Between
 BYD - Beyond

 C - Celsius
 CA - California
 CAA - Cold Air Advection
 CARIB - Caribbean
 CASCDS - Cascades
 CAVOK - Ceiling and visibility OK
 CAVU - Ceiling and visibility unlimited
 CB - Cumulonimbus
 CBS - Cumulonimbi
 CC - Cirrocumulus
 CCLDS - Clear of clouds
 CCLKWS - Counter-clockwise
 CCSL - Standing lenticular cirrocumulus
 CDFNT - Cold front
 CDFNTL - Cold frontal
 CFP - Cold front passage
 CG - Cloud-to-ground
 CHC - Chance
 CHCS - Chances
 CHG - Change
 CHGD - Changed
 CHGG - Changing
 CHGS - Changes
 CHSPK - Chesapeake
 CI - Cirrus
 CIG - Ceiling
 CIGS - Ceilings
 CLD - Cloud
 CLDNS - Cloudiness
 CLDS - Clouds
 CLKWS - Clockwise
 CLR - Clear
 CLRG - Clearing
 CLRS - Clears
 CMPLX - Complex
 CNCL - Cancel
 CNCLD - Canceled
 CNCLG - Canceling
 CNCLS - Cancels
 CNDN - Canadian
 CNTR - Center
 CNTRD - Centered
 CNTRLN - Centerline
 CNTRS - Centers
 CNTRL - Central
 CNTY - County
 CNTYS - Counties
 CNVG - Converge
 CNVGG - Converging
 CNVGNC - Convergence
 CNVTN - Convection
 CNVTV - Convective
 CNVTVLY - Convectively
 CNFDC - Confidence
 CO - Colorado
 COMPAR - Compare
 COMPARG - Comparing
 COMPARD - Compared
 COMPARS - Compares
 COND - Conditions
 CONT - Continue
 CONTD - Continued
 CONTLY - Continually
 CONTG - Continuing
 CONTRAILS - Condensation Trails
 CONTS - Continues
 CONTDVD - Continental Divide
 CONUS - Continental U.S.
 COORD - Coordinate
 COR - Correction
 CPBL - Capable
 CRC - Circle
 CRCLC - Circulate
 CRCLN - Circulation
 CRNR - Corner
 CRNRS - Corners
 CRS - Course
 CS - Cirrostratus
 CSDR - Consider
 CSDRBL - Considerable
 CST - Coast
 CSTL - Coastal
 CT - Connecticut
 CTGY - Category
 CTSKLS - Catskills
 CU - Cumulus
 CUFRA - Cumulus Fractus
 CVR - Cover
 CVRD - Covered
 CVRG - Covering
 CVRS - Covers
 CYC - Cyclonic
 CYCLGN - Cyclogenesis

 DABRK - Daybreak
 DALGT - Daylight
 DBL - Double
 DC - District of Columbia
 DCR - Decrease
 DCRD - Decreased
 DCRG - Decreasing
 DCRGLY - Decreasingly
 DCRS - Decreases
 DE - Delaware
 DEG - Degree
 DEGS - Degrees
 DELMARVA - Delaware-Maryland-Virginia
 DFCLT - Difficult
 DFCLTY - Difficulty
 DFNT - Definite
 DFNTLY - Definitely
 DFRS - Differs
 DFUS - Diffuse
 DGNL - Diagonal
 DGNLLY - Diagonally
 DIGG - Digging
 DIR - Direction
 DISC - Discontinue
 DISCD - Discontinued
 DISCG - Discontinuing
 DISRE - Disregard
 DISRED - Disregarded
 DISREG - Disregarding
 DKTS - Dakotas
 DLA - Delay
 DLAD - Delayed
 DLT - Delete
 DLTD - Deleted
 DLTG - Deleting
 DLY - Daily
 DMG - Damage
 DMGD - Damaged
 DMGG - Damaging
 DMNT - Dominant
 DMSH - Diminish
 DMSHD - Diminished
 DMSHG - Diminishing
 DMSHS - Diminishes
 DNDFTS - Downdrafts
 DNS - Dense
 DNSLP - Downslope
 DNSTRM - Downstream
 DNWND - Down wind
 DP - Deep
 DPND - Deepened
 DPNS - Deepens
 DPR - Deeper
 DPNG - Deepening
 DPTH - Depth
 DRFT - Drift
 DRFTD - Drifted
 DRFTG - Drifting
 DRFTS - Drifts
 DRZL - Drizzle
 DSCNT - Descent
 DSIPT - Dissipate
 DSIPTD - Dissipated
 DSIPTG - Dissipating
 DSIPTN - Dissipation
 DSIPTS - Dissipates
 DSND - Descend
 DSNDG - Descending
 DSNDS - Descends
 DSNT - Distant
 DSTBLZ - Destabilize
 DSTBLZD - Destabilized
 DSTBLZG - Destablizing
 DSTBLZS - Destablizes
 DSTBLZN - Destablization
 DSTC - Distance
 DTRT - Deteriorate
 DTRTD - Deteriorated
 DTRTG - Deteriorating
 DTRTS - Deteriorates
 DURG - During
 DURN - Duration
 DVLP - Develop
 DVLPD - Developed
 DVLPG - Developing
 DVLPMT - Development
 DVLPS - Develops
 DVRG - Diverge
 DVRGG - Diverging
 DVRGNC - Divergence
 DVRGS - Diverges
 DVV - Downward vertical velocity
 DWNDFTS - Downdrafts
 DWPNT - Dew point
 DWPNTS - Dew points
 DX - Duplex

 E - East
 EBND - East bound
 EFCT - Effect
 ELNGT - Elongate
 ELNGTD - Elongated
 ELSW - Elsewhere
 EMBDD - Embedded
 EMERG - Emergency
 ENCTR - Encounter
 ENDG - Ending
 ENE - East-northeast
 ENELY - East-northeasterly
 ENERN - East-northeastern
 ENEWD - East-northeastward
 ENHNC - Enhance
 ENHNCD - Enhanced
 ENHNCG - Enhancing
 ENHNCS - Enhances
 ENHNCMNT - Enhancement
 ENTR - Entire
 ERN - Eastern
 ERY - Early
 ERYR - Earlier
 ESE - East-southeast
 ESELY - East-southeasterly
 ESERN - East-southeastern
 ESEWD - East-southeastward
 ESNTL - Essential
 ESTAB - Establish
 ESTS - Estimates
 ETA - Eta model
 ETC - Et cetera
 ETIM - Elapsed time
 EVE - Evening
 EWD - Eastward
 EXCLV - Exclusive
 EXCLVLY - Exclusively
 EXCP - Except
 EXPC - Expect
 EXPCD - Expected
 EXPCG - Expecting
 EXTD - Extend
 EXTDD - Extended
 EXTDG - Extending
 EXTDS - Extends
 EXTN - Extension
 EXTRAP - Extrapolate
 EXTRAPD - Extrapolated
 EXTRM - Extreme
 EXTRMLY - Extremely
 EXTSV - Extensive

 F - Fahrenheit
 FA - Aviation area forecast
 FAH - Fahrenheit
 FAM - Familiar
 FCST - Forecast
 FCSTD - Forecasted
 FCSTG - Forecasting
 FCSTR - Forecaster
 FCSTS - Forecasts
 FIG - Figure
 FILG - Filling
 FIRAV - First available
 FL - Florida
 FLG - Falling
 FLRY - Flurry
 FLRYS - Flurries
 FLT - Flight
 FLW - Follow
 FLWG - Following
 FM - From
 FMT - Format
 FNCTN - Function
 FNT - Front
 FNTL - Frontal
 FNTS - Fronts
 FNTGNS - Frontogenesis
 FNTLYS - Frontolysis
 FORNN - Forenoon
 FPM - Feet per minute
 FQT - Frequent
 FQTLY - Frequently
 FRM - Form
 FRMG - Forming
 FRMN - Formation
 FROPA - Frontal passage
 FROSFC - Frontal surface
 FRST - Frost
 FRWF - Forecast wind factor
 FRZ - Freeze
 FRZN - Frozen
 FRZG - Freezing
 FT - Feet
 FT - Terminal forecast
 FTHR - Further
 FVRBL - Favorable
 FWD - Forward
 FYI - For your information

 G - Gust
 GA - Georgia
 GEN - General
 GENLY - Generally
 GEO - Geographic
 GEOREF - Geographical reference
 GF - Ground fog
 GICG - Glaze icing
 GLFALSK - Gulf of Alaska
 GLFCAL - Gulf of California
 GLFMEX - Gulf of Mexico
 GLFSTLAWR - Gulf of St. Lawrence
 GND - Ground
 GNDFG - Ground fog
 GRAD - Gradient
 GRDL - Gradual
 GRDLY - Gradually
 GRT - Great
 GRTLY - Greatly
 GRTR - Greater
 GRTST - Greatest
 GRTLKS - Great Lakes
 GSTS - Gusts
 GSTY - Gusty
 GV - Ground visibility

 HAZ - Hazard
 HCVIS - High clouds visible
 HDFRZ - Hard freeze
 HDSVLY - Hudson Valley
 HDWND - Head wind
 HGT - Height
 HI - High
 HIER - Higher
 HIFOR - High level forecast
 HLF - Half
 HLTP - Hilltop
 HLSTO - Hailstones
 HLYR - Haze layer aloft
 HND - Hundred
 HR - Hour
 HRS - Hours
 HRZN - Horizon
 HTG - Heating
 HURCN - Hurricane
 HUREP - Hurricane report
 HV - Have
 HVY - Heavy
 HVYR - Heavier
 HVYST - Heaviest
 HWVR - However
 HWY - Highway

 IA - Iowa
 IC - Ice
 ICG - Icing
 ICGIC - Icing in clouds
 ICGIP - Icing in precipitation
 ID - Idaho
 IL - Illinois
 IMDT - Immediate
 IMDTLY - Immediately
 IMPL - Impulse
 IMPLS - Impulses
 IMPT - Important
 INCL - Include
 INCLD - Included
 INCLG - Including
 INCLS - Includes
 INCR - Increase
 INCRD - Increased
 INCRG - Increasing
 INCRGLY - Increasingly
 INCRS - Increases
 INDC - Indicate
 INDCD - Indicated
 INDCG - Indicating
 INDCS - Indicates
 INDEF - Indefinite
 INFO - Information
 INLD - Inland
 INSTBY - Instability
 INTCNTL - Intercontinental
 INTL - International
 INTMD - Intermediate
 INTMT - Intermittent
 INTMTLY - Intermittently
 INTR - Interior
 INTRMTRGN - Intermountain region
 INTS - Intense
 INTSFCN - Intensification
 INTSFY - Intensify
 INTSFYD - Intensified
 INTSFYG - Intensifying
 INTSFYS - Intensifies
 INTSTY - Intensity
 INTVL - Interval
 INVRN - Inversion
 IOVC - In overcast
 INVOF - In vicinity of
 IP - Ice pellets
 IPV - Improve
 IPVG - Improving
 IR - Infrared
 ISOL - Isolate
 ISOLD - Isolated

 JCTN - Junction
 JTSTR - Jet stream

 KFRST - Killing frost
 KLYR - Smoke layer aloft
 KOCTY - Smoke over city
 KS - Kansas
 KT - Knots
 KY - Kentucky

 LA - Louisiana
 LABRDR - Labrador
 LAT - Latitude
 LCL - Local
 LCLY - Locally
 LCTD - Located
 LCTN - Location
 LCTMP - Little change in temperature
 LEVEL - Level
 LFM - Limited Fine Mesh Model
 LFTG - Lifting
 LGRNG - Long range
 LGT - Light
 LGTR - Lighter
 LGWV - Long wave
 LI - Lifted Index
 LIS - Lifted indices
 LK - Lake
 LKS - Lakes
 LKLY - Likely
 LLJ - Low Level Jet
 LLWS - Low Level Wind Shear
 LLWAS - Low level wind shear alert system
 LMTD - Limited
 LMTG - Limiting
 LMTS - Limits
 LN - Line
 LN - Lines
 LO - Low
 LONG - Longitude
 LONGL - Longitudinal
 LRG - Large
 LRGLY - Largely
 LRGR - Larger
 LRGST - Largest
 LST - Local standard time
 LTD - Limited
 LTG - Lightning
 LTGCC - Lightning cloud-to-cloud
 LTGCG - Lightning cloud-to-ground
 LTGCCCG - Lightning cloud-to-cloud cloud-to-ground
 LTGCW - Lightning cloud-to-water
 LTGIC - Lightning in cloud
 LTL - Little
 LTLCG - Little change
 LTR - Later
 LTST - Latest
 LV - Leaving
 LVL - Level
 LVLS - Levels
 LWR - Lower
 LWRD - Lowered
 LWRG - Lowering
 LYR - Layer
 LYRD - Layered
 LYRS - Layers

 MA - Massachusetts
 MAN - Manitoba
 MAX - Maximum
 MB - Millibars
 MCD - Mesoscale discussion
 MD - Maryland
 MDFY - Modify
 MDFYD - Modified
 MDFYG - Modifying
 MDL - Model
 MDLS - Models
 MDT - Moderate
 MDTLY - Moderately
 ME - Maine
 MED - Medium
 MEGG - Merging
 MESO - Mesoscale
 MET - Meteorological
 METRO - Metropolitan
 MEX - Mexico
 MHKVLY - Mohawk Valley
 MI - Michigan
 MID - Middle
 MIDN - Midnight
 MIL - Military
 MIN - Minimum
 MISG - Missing
 MLTLVL - Melting level
 MN - Minnesota
 MNLND - Mainland
 MNLY - Mainly
 MO - Missouri
 MOGR - Moderate or greater
 MOV - Move
 MOVD - Moved
 MOVG - Moving
 MOVMT - Movement
 MOVS - Moves
 MPH - Miles per hour
 MRGL - Marginal
 MRGLLY - Marginally
 MRNG - Morning
 MRTM - Maritime
 MS - Mississippi
 MSG - Message
 MSL - Mean sea level
 MST - Most
 MSTLY - Mostly
 MSTR - Moisture
 MT - Montana
 MTN - Mountain
 MTNS - Mountains
 MULT - Multiple
 MULTILVL - Multi-level
 MXD - Mixed

 N - North
 NAB - Not above
 NAT - North Atlantic
 NATL - National
 NAV - Navigation
 NB - New Brunswick
 NBND - Northbound
 NBRHD - Neighborhood
 NC - North Carolina
 NCWX - No change in weather
 ND - North Dakota
 NE - Northeast
 NEB - Nebraska
 NEC - Necessary
 NEG - Negative
 NEGLY - Negatively
 NELY - Northeasterly
 NERN - Northeastern
 NEWD - Northeastward
 NEW ENG - New England
 NFLD - Newfoundland
 NGM - Nested Grid Model
 NGT - Night
 NH - New Hampshire
 NIL - None
 NJ - New Jersey
 NL - No layers
 NLT - Not later than
 NLY - Northerly
 NM - New Mexico
 NMBR - Number
 NMBRS - Numbers
 NMC - National Meteorological Center
 NML - Normal
 NMRS - Numerous
 NNE - North-northeast
 NNELY - North-northeasterly
 NNERN - North-northeastern
 NNEWD - North-northeastward
 NNW - North-northwest
 NNWLY - North-northwesterly
 NNWRN - North-northwestern
 NNWWD - North-northwestward
 NNNN - End of message
 NOAA - National Oceanic and Atmospheric Administration
 NOPAC - Northern Pacific
 NPRS - Nonpersistent
 NR - Near
 NRLY - Nearly
 NRN - Northern
 NRW - Narrow
 NS - Nova Scotia
 NTFY - Notify
 NTFYD - Notified
 NV - Nevada
 NVA - Negative vorticity advection
 NW - Northwest
 NWD - Northward
 NWLY - Northwesterly
 NWRN - Northwestern
 NWS - National Weather Service
 NY - New York
 NXT - Next

 OAT - Outside Air Temperature
 OBND - Outbound
 OBS - Observation
 OBSC - Obscure
 OBSCD - Obscured
 OBSCG - Obscuring
 OCFNT - Occluded front
 OCLD - Occlude
 OCLDS - Occludes
 OCLDD - Occluded
 OCLDG - Occluding
 OCLN - Occlusion
 OCNL - Occasional
 OCNLY - Occasionally
 OCR - Occur
 OCRD - Occurred
 OCRG - Occurring
 OCRS - Occurs
 OFC - Office
 OFP - Occluded frontal passage
 OFSHR - Offshore
 OH - Ohio
 OK - Oklahoma
 OMTNS - Over mountains
 ONSHR - On shore
 OR - Oregon
 ORGPHC - Orographic
 ORIG - Original
 OSV - Ocean station vessel
 OTLK - Outlook
 OTP - On top
 OTR - Other
 OTRW - Otherwise
 OUTFLO - Outflow
 OVC - Overcast
 OVNGT - Overnight
 OVR - Over
 OVRN - Overrun
 OVRNG - Overrunning
 OVTK - Overtake
 OVTKG - Overtaking
 OVTKS - Overtakes

 PA - Pennsylvania
 PAC - Pacific
 PBL - Planetary boundary layer
 PCPN - Precipitation
 PD - Period
 PDS - Periods
 PDMT - Predominant
 PEN - Peninsula
 PERM - Permanent
 PGTSND - Puget Sound
 PHYS - Physical
 PIBAL - Pilot balloon observation
 PIBALS - Pilot balloon reports
 PIREP - Pilot weather report
 PIREPS - Pilot weather reports
 PLNS - Plains
 PLS - Please
 PLTO - Plateau
 PM - Post meridian
 PNHDL - Panhandle
 POS - Positive
 POSLY - Positively
 PPINE - PPI no echoes
 PPSN - Present position
 PRBL - Probable
 PRBLY - Probably
 PRBLTY - Probability
 PRECD - Precede
 PRECDD - Preceded
 PRECDG - Preceding
 PRECDS - Precedes
 PRES - Pressure
 PRESFR - Pressure falling rapidly
 PRESRR - Pressure rising rapidly
 PRIM - Primary
 PRIN - Principal
 PRIND - Present indications are
 PRJMP - Pressure jump
 PROC - Procedure
 PROD - Produce
 PRODG - Producing
 PROG - Forecast
 PROGD - Forecasted
 PROGS - Forecasts
 PRSNT - Present
 PRSNTLY - Presently
 PRST - Persist
 PRSTS - Persists
 PRSTNC - Persistence
 PRSTNT - Persistent
 PRVD - Provide
 PRVDD - Provided
 PRVDG - Providing
 PRVDS - Provides
 PS - Plus
 PSBL - Possible
 PSBLY - Possibly
 PSBLTY - Possibility
 PSG - Passage
 PSN - Position
 PSND - Positioned
 PTCHY - Patchy
 PTLY - Partly
 PTNL - Potential
 PTNLY - Potentially
 PTNS - Portions
 PUGET - Puget Sound
 PVA - Positive vorticity advection
 PVL - Prevail
 PVLD - Prevailed
 PVLG - Prevailing
 PVLS - Prevails
 PVLT - Prevalent
 PWR - Power

 QN - Question
 QPFERD - NMC excessive rainfall discussion
 QPFHSD - NMC heavy snow discussion
 QPFSPD - NMC special precipitation discussion
 QSTNRY - Quasi stationary
 QUAD - Quadrant
 QUE - Quebec

 R - Rain
 RADAT - Radiosonde observation data
 RAOB - Radiosonde observation
 RAOBS - Radiosonde observations
 RCH - Reach
 RCHD - Reached
 RCHG - Reaching
 RCHS - Reaches
 RCKY - Rocky
 RCKYS - Rockies
 RCMD - Recommend
 RCMDD - Recommended
 RCMDG - Recommending
 RCMDS - Recommends
 RCRD - Record
 RCRDS - Records
 RCV - Receive
 RCVD - Received
 RCVG - Receiving
 RCVS - Receives
 RDC - Reduce
 RDGG - Ridging
 RDR - Radar
 RDVLP - Redevelop
 RDVLPG - Redeveloping
 RDVLPMT - Redevelopment
 RE - Regard
 RECON - Reconnaissance
 REF - Reference
 RES - Reserve
 RGL - Regional Model
 RGT - Right
 RHINO - RHI not operative
 RI - Rhode Island
 RLBL - Reliable
 REPL - Replace
 REPLD - Replaced
 REPLG - Replacing
 REPLS - Replaces
 REQ - Request
 REQS - Requests
 REQSTD - Requested
 RESP - Response
 RESTR - Restrict
 RGD - Ragged
 RGLR - Regular
 RGN - Region
 RGNS - Regions
 RH - Relative Humidity
 RIOGD - Rio Grande
 RLTV - Relative
 RLTVLY - Relatively
 RMN - Remain
 RMND - Remained
 RMNDR - Remainder
 RMNG - Remaining
 RMNS - Remains
 RNFL - Rainfall
 ROT - Rotate
 ROTD - Rotated
 ROTG - Rotating
 ROTS - Rotates
 RPD - Rapid
 RPDLY - Rapidly
 RPLC - Replace
 RPLCD - Replaced
 RPLCG - Replacing
 RPLCS - Replaces
 RPRT - Report
 RPRTD - Reported
 RPRTG - Reporting
 RPRTS - Reports
 RPT - Repeat
 RPTG - Repeating
 RPTS - Repeats
 RQR - Require
 RQRD - Required
 RQRG - Requiring
 RQRS - Requires
 RS - Receiver station
 RSG - Rising
 RSN - Reason
 RSNG - Reasoning
 RSNS - Reasons
 RSTR - Restrict
 RSTRD - Restricted
 RSTRG - Restricting
 RSTRS - Restricts
 RTRN - Return
 RTRND - Returned
 RTRNG - Returning
 RTRNS - Returns
 RUF - Rough
 RUFLY - Roughly
 RVS - Revise
 RVSD - Revised
 RVSG - Revising
 RVSS - Revises
 RW - Rain shower

 S - South
 SA - Surface observation
 SAO - Surface observation
 SAOS - Surface observations
 SASK - Saskatchewan
 SATFY - Satisfactory
 SBND - South bound
 SBSD - Subside
 SBSDD - Subsided
 SBSDNC - Subsidence
 SBSDS - Subsides
 SC - South Carolina
 SCND - Second
 SCNDRY - Secondary
 SCSL - Standing lenticular stratocumulus
 SCT - Scatter
 SCTD - Scattered
 SCTR - Sector
 SD - South Dakota
 SE - Southeast
 SEC - Second
 SELS - Severe Local Storms Unit
 SELY - Southeasterly
 SEPN - Separation
 SEQ - Sequence
 SERN - Southeastern
 SEWD -Southeastward
 SFC - Surface
 SFERICS - Atmospherics
 SG - Snow grains
 SGFNT - Significant
 SGFNTLY - Significantly
 SHFT - Shift
 SHFTD - Shifted
 SHFTG - Shifting
 SHFTS - Shifts
 SHLD - Shield
 SHLW - Shallow
 SHRT - Short
 SHRTLY - Shortly
 SHRTWV - Shortwave
 SHRTWVS - Shortwaves
 SHUD - Should
 SHWR - Shower
 SHWRS - Showers
 SIERNEV - Sierra Nevada
 SIG - Signature
 SIGMET - Significant meteorological information
 SIMUL - Simultaneous
 SKC - Sky clear
 SKED - Schedule
 SLD - Solid
 SLGT - Slight
 SLGTLY - Slightly
 SLO - Slow
 SLOLY - Slowly
 SLOR - Slower
 SLP - Slope
 SLPG - Sloping
 SLT - Sleet
 SLY - Southerly
 SM - Statute mile
 SMK - Smoke
 SML - Small
 SMLR - Smaller
 SMRY - Summary
 SMS - Synchronous meteorological satellite
 SMTH - Smooth
 SMTHR - Smoother
 SMTHST - Smoothest
 SMTM - Sometime
 SMWHT - Somewhat
 SNBNK - Snow bank
 SND - Sand
 SNFLK - Snow flake
 SNGL - Single
 SNOINCR - Snow increase
 SNOINCRG - Snow increasing
 SNST - Sunset
 SNW - Snow
 SNWFL - Snowfall
 SOP - Standard operating procedure
 SP - Snow pellets
 SPCLY - Especially
 SPD - Speed
 SPDS - Speeds
 SPENES - Satellite precipitation estimate statement
 SPKL - Sprinkle
 SPKLS - Sprinkles
 SPLNS - Southern Plains
 SPRD - Spread
 SPRDG - Spreading
 SPRDS - Spreads
 SPRL - Spiral
 SQAL - Squall
 SQLN - Squall line
 SR - Sunrise
 SRN - Southern
 SRND - Surround
 SRNDD - Surrounded
 SRNDG - Surrounding
 SRNDS - Surrounds
 SS - Sunset
 SSE - South-southeast
 SSELY - South-southeasterly
 SSERN - South-southeastern
 SSEWD - South-southeastward
 SSW - South-southwest
 SSWLY - South-southwesterly
 SSWRN - South-southwestern
 SSWWD - South-southwestward
 ST - Stratus
 STAGN - Stagnation
 STBL - Stable
 STBLTY - Stability
 STD - Standard
 STDY - Steady
 STFR - Stratus fractus
 STFRM - Stratiform
 STG - Strong
 STGLY - Strongly
 STGR - Stronger
 STGST - Strongest
 STLT - Satellite
 STM - Storm
 STMS - Storms
 STN - Station
 STNS - Stations
 STNRY - Stationary
 SUB - Substitute
 SUBTRPCL - Subtropical
 SUF - Sufficient
 SUFLY - Sufficiently
 SUG - Suggest
 SUGG - Suggesting
 SUGS - Suggests
 SUP - Supply
 SUPG - Supplying
 SUPR - Superior
 SUPS - Supplies
 SUPSD - Supersede
 SUPSDG - Superseding
 SUPSDS - Supersedes
 SVG - Serving
 SVR - Severe
 SVRL - Several
 SW - Southwest
 SWD - Southward
 SWWD - Southwestward
 SW- - Light snow shower
 SW+ - Heavy snow shower
 SWLG - Swelling
 SWLY - Southwesterly
 SWOMCD - SELS Mesoscale Discussion
 SWRN - Southwestern
 SX - Stability index
 SXN - Section
 SXNS - Sections
 SYNOP - Synoptic
 SYNS - Synopsis
 SYS - System

 T - Thunder
 TCNTL - Transcontinental
 TCU - Towering cumulus
 TDA - Today
 TEMP - Temperature
 THD - Thunderhead
 THDR - Thunder
 THK - Thick
 THKNG - Thickening
 THKNS - Thickness
 THKR - Thicker
 THKST - Thickest
 THN - Thin
 THNG - Thinning
 THNR - Thinner
 THNST - Thinnest
 THR - Threshold
 THRFTR - Thereafter
 THRU - Through
 THRUT - Throughout
 THSD - Thousand
 THTN - Threaten
 THTND - Threatened
 THTNG - Threatening
 THTNS - Threatens
 TIL - Until
 TMPRY - Temporary
 TMPRYLY - Temporarily
 TMW - Tomorrow
 TN - Tennessee
 TNDCY - Tendency
 TNDCYS - Tendencies
 TNGT - Tonight
 TNTV - Tentative
 TNTVLY - Tentatively
 TOPS - Tops
 TOVC - Top of overcast
 TPG - Topping
 TRBL - Trouble
 TRIB - Tributary
 TRKG - Tracking
 TRML -Terminal
 TRMT - Terminate
 TRMTD - Terminated
 TRMTG - Terminating
 TRMTS - Terminates
 TRNSP - Transport
 TRNSPG - Transporting
 TROF - Trough
 TROFS - Troughs
 TROP - Tropopause
 TRPCD - Tropical continental
 TRPCL - Tropical
 TRRN - Terrain
 TRSN - Transition
 TRW - Thunderstorm
 TRW+ - Thunderstorm with heavy rain shower
 TSFR - Transfer
 TSFRD - Transferred
 TSFRG - Transferring
 TSFRS - Transfers
 TSHWR - Thundershower
 TSHWRS - Thundershowers
 TSNT - Transient
 TSQLS - Thunder squalls
 TSTM - Thunderstorm
 TSTMS - Thunderstorms
 TS - Thunderstorm with snow
 TS+ - Thunderstorm with heavy snow
 TSW - Thunderstorm with snow showers
 TSW+ - Thunderstorm with heavy snow showers
 TURBC - Turbulence
 TURBT - Turbulent
 TWD - Toward
 TWDS - Towards
 TWI - Twilight
 TWRG - Towering
 TX - Texas

 UDDF - Up drafts and down drafts
 UN - Unable
 UNAVBL - Unavailable
 UNEC - Unnecessary
 UNKN - Unknown
 UNL - Unlimited
 UNRELBL - Unreliable
 UNRSTD - Unrestricted
 UNSATFY - Unsatisfactory
 UNSBL - Unseasonable
 UNSTBL - Unstable
 UNSTDY - Unsteady
 UNSTL - Unsettle
 UNSTLD - Unsettled
 UNUSBL - Unusable
 UPDFTS - Updrafts
 UPR - Upper
 UPSLP - Upslope
 UPSTRM - Upstream
 URG - Urgent
 USBL - Usable
 UT - Utah
 UVV - Upward vertical velocity
 UVVS - Upward vertical velocities
 UWNDS - Upper winds

 VA - Virginia
 VARN - Variation
 VCNTY - Vicinity
 VCOT - VFR conditions on top
 VCTR - Vector
 VDUC - VAS Data Utilization Center (NSSFC)
 VFY - Verify
 VFYD - Verified
 VFYG - Verifying
 VFYS - Verifies
 VLCTY - Velocity
 VLCTYS - Velocities
 VLNT - Violent
 VLNTLY - Violently
 VLY - Valley
 VLYS - Valleys
 VMC - Visual meteorological conditions
 VOL - Volume
 VORT - Vorticity
 VR - Veer
 VRG - Veering
 VRBL - Variable
 VRISL - Vancouver Island, BC
 VRS - Veers
 VRT MOTN - Vertical Motion
 VRY - Very
 VSB - Visible
 VSBY - Visibility
 VSBYDR - Visibility decreasing rapidly
 VSBYIR - Visibility increasing rapidly
 VT - Vermont
 VV - Vertical velocity

 W - West
 WA - Washington
 WAA - Warm Air Advection
 WBND - West bound
 WDLY - Widely
 WDSPRD - Widespread
 WEA - Weather
 WFO - Weather Forecast Office
 WFOS - Weather Forecast Offices
 WFP - Warm front passage
 WI - Wisconsin
 WIBIS - Will be issued
 WINT - Winter
 WK - Weak
 WKDAY - Weekday
 WKEND - Weekend
 WKNG - Weakening
 WKNS - Weakens
 WKR - Weaker
 WKST - Weakest
 WKN - Weaken
 WL - Will
 WLY - Westerly
 WND - Wind
 WNDS - Winds
 WNW - West-northwest
 WNWLY - West-northwesterly
 WNWRN - West-northwestern
 WNWWD - West-northwestward
 WO - Without
 WPLTO - Western Plateau
 WRM - Warm
 WRMG - Warming
 WRN - Western
 WRMR - Warmer
 WRMST - Warmest
 WRMFNT - Warm front
 WRMFNTL - Warm Frontal
 WRNG - Warning
 WRNGS - Warnings
 WRS - Worse
 WSHFT - Wind shift
 WSHFTS - Wind Shifts
 WSFO - Weather Service Forecast Office
 WSFOS - Weather Service Forecast Offices
 WSO - Weather Service Office
 WSOS - Weather Service Offices
 WSTCH - Wasatch Range
 WSW - West-southwest
 WSWLY - West-southwesterly
 WSWRN - West-southwestern
 WSWWD - West-southwestward
 WTR - Water
 WTRS - Waters
 WTSPT - Waterspout
 WTSPTS - Waterspouts
 WUD - Would
 WV - West Virginia
 WVS - Waves
 WW - Severe Weather Watch
 WWAMKC - Status Report
 WWD - Westward
 WWS - Severe Weather Watches
 WX - Weather
 WY - Wyoming

 XCP - Except
 XPC - Expect
 XPCD - Expected
 XPCG - Expecting
 XPCS - Expects
 XPLOS - Explosive
 XTND - Extend
 XTNDD - Extended
 XTNDG - Extending
 XTRM - Extreme
 XTRMLY - Extremely

 YDA - Yesterday
 YKN - Yukon
 YLSTN - Yellowstone

 ZL - Freezing drizzle
 ZN - Zone
 ZNS - Zones
 ZR - Freezing rain