Aviation Weather/METAR Abbreviations

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GTS: Global Telecommunication System
ASSOCD: Associated
UNSTDY: Unsteady
PM: Postmeridian
BYD: Beyond
IL: Illinois
LCTD: Located
WLY: Westerly
STNRY: Stationary
MOV: Move
SYNOP: Synoptic
CLDS: Clouds
MET: Meteorological
UNRELBL: Unreliable
HDSVLY: Hudson Valley
THTN: Threaten
BLKHLS: Black Hills
BLKTS: Blankets
PLTO: Plateau
DFRS: Differs
INSTBY: Instability
LGRNG: Long range
REPLD: Replaced
ERN: Eastern
FIRAV: First available
SPRD: Spread
PRBLY: Probably
THK: Thick
BDRY: Boundary
HDFRZ: Hard freeze
CRS: Course
NWRN: Northwestern
RVSG: Revising
THRUT: Throughout
GLFALSK: Gulf of Alaska
YLSTN: Yellowstone
RDVLPMT: Redevelopment
RPTG: Repeating
RPRT: Report
APRNT: Apparent
SHRT: Short
PUGET: Puget Sound
SIGMET: Significant meteorological information
ANLYS: Analysis
RUFLY: Roughly
NAB: Not above
PVLG: Prevailing
CST: Coast
RTRNS: Returns
REPLS: Replaces
SLPG: Sloping
EXTRM: Extreme
NY: New York
NELY: Northeasterly
CONTDVD: Continental Divide
DRZL: Drizzle
MEX: Mexico
THTNS: Threatens
KLYR: Smoke layer aloft
DISC: Discontinue
FIG: Figure
NEWD: Northeastward
VLCTY: Velocity
PVL: Prevail
WL: Will
OVC: Overcast
FIR: Flight information region
TRRN: Terrain
UVV: Upward vertical velocity
RSTRS: Restricts
SNOINCRG: Snow increasing
QN: Question
CONUS: Continental U.S.
SEV: Severe
LTR: Later
RCH: Reach
GND: Ground
CARIB: Caribbean
FNTLYS: Frontolysis
ENEWD: East northeastward
DSNDG: Descending
EXCP: Except
SSERN: South southeastern
MISG: Missing
BCH: Beach
INLD: Inland
JTSTR: Jet stream
RPLCS: Replaces
SWWD: Southwestward
SMTHST: Smoothest
SAB: Satellite Analysis Branch
RIOGD: Rio Grande
FYI: For your information
AGRMT: Agreement
VT: Vermont
TRBL: Trouble
TEMP: Temperature
INTMT: Intermittent
SLOLY: Slowly
FNTS: Fronts
DRFT: Drift
PRECDD: Preceded
CNCLS: Cancels
PRSTNT: Persistent
REQ: Request
IMDT: Immediate
RVS: Revise
NNWWD: North northwestward
LWRD: Lowered
AVG: Average
LYRD: Layered
MESO: Mesoscale
RCRD: Record
NC: North Carolina
DSIPT: Dissipate
PRST: Persist
DP: Deep
EXPCD: Expected
IPVG: Improving
SLGT: Slight
TOVC: Top of overcast
INTL: International
AGN: Again
DISRED: Disregarded
FNCTN: Function
NNE: North northeast
FRMN: Formation
MDTLY: Moderately
MIL: Military
DLTG: Deleting
WSFO: Weather Service Forecast Office
INDCG: Indicating
XPCG: Expecting
PRJMP: Pressure jump
NVA: Negative vorticity advection
WSW: West southwest
LTL: Little
LCLY: Locally
SBSDNC: Subsidence
TSFRG: Transferring
ACSL: Altocumulus standing lenticular
TROFS: Troughs
LTGCC: Lightning cloud to cloud
WV: West Virginia
XTND: Extend
ENHNCS: Enhances
RCVD: Received
ISOL: Isolate
RGD: Ragged
EXTRAPD: Extrapolated
CYC: Cyclonic
BN: Blowing sand
SNFLK: Snowflake
PTNL: Potential
MST: Most
STFR: Stratus fractus
DALGT: Daylight
ASAP: As soon as possible
VOL: Volume
BOOTHEEL: Bootheel
SUGS: Suggests
GLFSTLAWR: Gulf of St. Lawrence
RMND: Remained
SHFT: Shift
CONTD: Continued
C: Celsius
UPSTRM: Upstream
BDA: Bermuda
LTGCW: Lightning cloud to water
RDGG: Ridging
SSWWD: South southwestward
FNT: Front
TRML: Terminal
PATWAS: Pilot's automatic telephone weather answering service
MSTLY: Mostly
HGT: Height
MHKVLY: Mohawk Valley
PRES: Pressure
APCH: Approach
MXD: Mixed
DVRGS: Diverges
LIS: Lifted Indices
PRSNTLY: Presently
ABNDT: Abundant
DLA: Delay
DSTBLZG: Destabilizing
SKC: Sky clear
LVL: Level
EMBDD: Embedded
OCRG: Occurring
HPC: Hydrometeorological Prediction Center
CCLKWS: Counterclockwise
CB: Cumulonimbus
DELMARVA: Delaware Maryland Virginia
SHLD: Shield
TRSN: Transition
UNAVBL: Unavailable
SUB: Substitute
OCRS: Occurs
DSIPTD: Dissipated
METRO: Metropolitan
NGM: Nested grid model
DLY: Daily
AFT: After
INCLS: Includes
PEN: Peninsula
WKNG: Weakening
GRTLY: Greatly
TRNSPG: Transporting
MTN: Mountain
AMDD: Amended
OVRNG: Overrunning
CCLDS: Clear of clouds
LA: Louisiana
PRVDG: Providing
SBND: Southbound
DFNT: Definite
CSDRBL: Considerable
APPRG: Appearing
SM: Statute mile
NRLY: Nearly
SATFY: Satisfactory
SERN: Southeastern
REF: Reference
XTRMLY: Extremely
MEGG: Merging
ATTN: Attention
PROD: Produce
ATLC: Atlantic
KS: Kansas
WX: Weather
QUAD: Quadrant
RGT: Right
WKN: Weaken
HWY: Highway
SFC: Surface
INFO: Information
DISREG: Disregarding
DTRTD: Deteriorated
KOCTY: Smoke over city
CLRG: Clearing
BINOVC: Breaks in overcast
DNSLP: Downslope
DSND: Descend
DIGG: Digging
DTRT: Deteriorate
RVSD: Revised
TRMTG: Terminating
RCKY: Rocky
LMTD: Limited
ADVCTG: Advecting
OVTKS: Overtakes
NNNN: End of message
TMPRYLY: Temporarily
SG: Snow grains
CLD: Cloud
NATL: National
EVE: Evening
ACLTG: Accelerating
DSIPTN: Dissipation
OCFNT: Occluded front observed
CRC: Circle
OTP: On top
ADL: Additional
OCLN: Occlusion
W: West
EXCLV: Exclusive
HVY: Heavy
PL: Ice pellets
SCND: Second
HV: Have
BFR: Before
DPNG: Deepening
PRSTNC: Persistence
ACC: Altocumulus castellanus
WFSO: Weather Forecast Service Office
SXN: Section
WRMST: Warmest
MED: Medium
SLO: Slow
ACFT: Aircraft
AOB: At or below
VORT: Vorticity
VCTR: Vector
DMG: Damage
LV: Leaving
MDFYD: Modified
DPR: Deeper
TN: Tennessee
OVTKG: Overtaking
DISCD: Discontinued
ADRNDCK: Adirondack
OUTFLO: Outflow
SCTD: Scattered
PIREP: Pilot weather report
DPNS: Deepens
ST: Stratus
WSTCH: Wasatch Range
CHGD: Changed
MNLY: Mainly
COND: Condition
RGLY: Largely
PSND: Positioned
AMD: Amend
IMDTLY: Immediately
VAAC: Volcanic Ash Advisory Center
IA: Iowa
RVSS: Revises
RMN: Remain
OCNLY: Occasionally
DFCLTY: Difficulty
NMBRS: Numbers
STGLY: Strongly
ALSTG: Altimeter setting
THTND: Threatened
SCNDRY: Secondary
INCLD: Included
HURCN: Hurricane
ADVNG: Advancing
CVRS: Covers
BCM: Become
GF: Fog
MRGL: Marginal
EXTRAP: Extrapolate
AFCTG: Affecting
APPR: Appear
PSBLY: Possibly
G: Gust
DCRGLY: Decreasingly
RTRND: Returned
WWD: Westward
ALTM: Altimeter
STFRM: Stratiform
RCVS: Receives
MIN: Minimum
WND: Wind
BLW: Below
NNERN: North northeastern
ORGPHC: Orographic
ALQDS: All quadrants
MA: Massachusetts
THKR: Thicker
DSIPTG: Dissipating
TS: Thunderstorm
LVLS: Levels
EBND: Eastbound
REPLG: Replacing
ENCTR: Encounter
RSNS: Reasons
VAL: Valley
DLT: Delete
PROB: Probability
HVYR: Heavier
SMTHR: Smoother
QSTNRY: Quasistationary
DCRS: Decreases
CSDR: Consider
DRFTG: Drifting
SLW: Slow
SSW: South southwest
RCMD: Recommend
XPC: Expect
SD: South Dakota
SUGG: Suggesting
CASCDS: Cascades
WPLTO: Western Plateau
ACPY: Accompany
TAF: Aviation terminal forecast
BGN: Begin
RCKYS: Rockies
TRMTD: Terminated
TRPCL: Tropical
NV: Nevada
PROGD: Forecasted
ENDG: Ending
DEGS: Degrees
SGFNT: Significant
TMPRY: Temporary
VCNTY: Vicinity
IMPL: Impulse
LYRS: Layers
RPDLY: Rapidly
OCLDS: Occludes
PRSNT: Present
EMERG: Emergency
THTNG: Threatening
MSTR: Moisture
SC: South Carolina or stratocumulus
OVHD: Overhead
DFUS: Diffuse
VSBY: Visibility
NTFYD: Notified
FRZ: Freeze
SUPR: Superior
DVLPD: Developed
CNVGNC: Convergence
HI: High
APCHG: Approaching
DBL: Double
RGN: Region
ALG: Along
DCRD: Decreased
RMNS: Remains
FAM: Familiar
SEWD: Southeastward
LFTG: Lifting
ACYC: Anticyclone
CUFRA: Cumulus fractus
EXTD: Extend
CNVTN: Convection
BLKTG: Blanketing
DWNDFTS: Downdrafts
RH: Relative humidity
DMSHG: Diminishing
SWRN: Southwestern
VSBYIR: Visibility increasing rapidly
AAWU: Alaskan Aviation Weather Unit
NNW: North northwest
STAGN: Stagnation
CHGS: Changes
NNWRN: North northwestern
PRODG: Producing
SVG: Serving
FRMG: Forming
PD: Period
NAT: North Atlantic
FCSTR: Forecaster
RCHS: Reaches
TSFRD: Transferred
SX: Stability index
LEVEL: Level
WAFS: Word Area Forecast System
BLDUP: Buildup
PROG: Forecast
SRNDG: Surrounding
VRBL: Variable
LMTS: Limits
GRTLKS: Great Lakes
CA: California
CONTLY: Continually
ACCUM: Accumulate
CONT: Continue
SPRDG: Spreading
SE: Southeast
LMTG: Limiting
NL: No layers
CNDN: Canadian
WW: Severe weather watch
SCT: Scatter
DMSH: Diminish
DPND: Deepened
LRGR: Larger
RPD: Rapid
WRNG: Warning
RE: Regard
ZN: Zone
APRX: Approximate
BCMG: Becoming
NBND: Northbound
FRZG: Freezing
NMRS: Numerous
THN: Thin
DVLPMT: Development
NFLD: Newfoundland
OVR: Over
CRNRS: Corners
FT: Feet
TNTV: Tentative
NXT: Next
GRAD: Gradient
MWO: Meteorological Watch Office
GRDL: Gradual
AR: Arkansas
DVRGG: Diverging
WIBIS: Will be issued
TOPS: Tops
DTRTS: Deteriorates
OCR: Occur
SIG: Signature
SMTM: Sometime
FCSTS: Forecasts
GENLY: Generally
CPBL: Capable
VFYS: Verifies
LO: Low
KFRST: Killing frost
CT: Connecticut
ADVCT: Advect
SVRL: Several
AC: Convective outlook or altocumulus
NNELY: North northeasterly
IP: Ice pellets
SMWHT: Somewhat
NERN: Northeastern
ESE: East southeast
WSWRN: West southwestern
CVRG: Covering
LKLY: Likely
PWB: Pilot weather briefing
BACLIN: Baroclinic
GEN: General
MOVD: Moved
ACLTS: Accelerates
UWNDS: Upper winds
SRNDS: Surrounds
FTHR: Further
CO: Colorado
CRNR: Corner
LTST: Latest
AZM: Azimuth
NS: Nova Scotia
ELNGTD: Elongated
GSTS: Gusts
URG: Urgent
INTSFYD: Intensified
LYR: Layer
OVTK: Overtake
DSCNT: Descent
TNTVLY: Tentatively
SSELY: South southeasterly
POSLY: Positively
FROSFC: Frontal surface
WKR: Weaker
SIERNEV: Sierra Nevada
AMS: Air mass
MOVG: Moving
HVYST: Heaviest
ENHNC: Enhance
DVRGNC: Divergence
MSL: Mean sea level
XPCD: Expected
UPSLP: Upslope
CNTY: County
DISRE: Disregard
CNVG: Converge
RSN: Reason
RGLR: Regular
DC: District of Columbia
PRVDS: Provides
NNWLY: North northwesterly
NR: Near
DRFTS: Drifts
PROGS: Forecasts
LABRDR: Labrador
FL: Florida or flight level
DSTC: Distance
RECON: Reconnaissance
HTG: Heating
FNTGNS: Frontogenesis
BRF: Brief
PRIND: Present indications are
NCWX: No change in weather
LTGCCCG: Lightning cloud to cloud cloud to ground
INTVL: Interval
UNL: Unlimited
OAT: Outside air temperature
NLT: Not later than
VRY: Very
WTSPT: Waterspout
BCMS: Becomes
FORNN: Forenoon
RESP: Response
IOVC: In overcast
UNEC: Unnecessary
AL: Alabama
MO: Missouri
INTSFYG: Intensifying
AVN: Aviation model
PCPN: Precipitation
NRN: Northern
STM: Storm
PPINA: Radar weather report not available
VA: Virginia
DURC: During climb
TWRG: Towering
NBRHD: Neighborhood
THNG: Thinning
FCSTG: Forecasting
PRBL: Probable
DWPNTS: Dew points
LCTMP: Little change in temperature
MDFYG: Modifying
STGST: Strongest
NTFY: Notify
PPSN: Present position
SPD: Speed
CI: Cirrus
ESEWD: East southeastward
APCHS: Approaches
SLP: Slope
MDLS: Models
WKST: Weakest
SELY: Southeasterly
DURN: Duration
SSWRN: South southwestern
RPTS: Repeats
OCLDG: Occluding
ENHNCMNT: Enhancement
ADVY: Advisory
BLO: Below clouds
AGL: Above ground level
HWVR: However
WDLY: Widely
NEGLY: Negatively
VFYG: Verifying
KT: Knots
ALTA: Alberta
WS: Wind shear
DNWND: Downwind
OBSCG: Obscuring
VLNTLY: Violently
NH: New Hampshire
OCRD: Occurred
COMPR: Compare
SKED: Schedule
CHC: Chance
CLRS: Clears
AP: Anomalous Propagation
OVNGT: Overnight
MDL: Model
BNDRY: Boundary
TNGT: Tonight
INTSFCN: Intensification
CYCLGN: Cyclogenesis
BKN: Broken
WY: Wyoming
BRKHIC: Breaks in higher clouds
APLCNS: Appalachians
WSHFT: Windshift
HIER: Higher
ENTR: Entire
ADVYS: Advisories
EXTRMLY: Extremely
DLAD: Delayed
CU: Cumulus
VARN: Variation
RPRTG: Reporting
FM: From
OCLD: Occlude
CLKWS: Clockwise
DKTS: Dakotas
WFP: Warm front passage
CTGY: Category
VLNT: Violent
NOAA: National Oceanic and Atmospheric Administration
MLTLVL: Melting level
AMT: Amount
DABRK: Daybreak
SPRL: Spiral
INTSFYS: Intensifies
EWD: Eastward
SLD: Solid
PERM: Permanent
SHFTG: Shifting
BS: Blowing snow
ENELY: East northeasterly
PIBAL: Pilot balloon observation
CNTRL: Central
XPCS: Expects
FCST: Forecast
REQS: Requests
BC: British Columbia
TRMTS: Terminates
RSNG: Reasoning
CMPLX: Complex
SSE: South southeast
UPR: Upper
ACLT: Accelerate
SGFNTLY: Significantly
FPM: Feet per minute
SIMUL: Simultaneous
APRXLY: Approximately
UNUSBL: Unusable
TRNSP: Transport
NRW: Narrow
CAA: Cold air advection
CNTRD: Centered
LGT: Light
SSWLY: South southwesterly
RMK: Remark
SQ: Squall
RPRTD: Reported
ANS: Answer
RCMDD: Recommended
SHUD: Should
DNS: Dense
ESNTL: Essential
TWDS: Towards
WRMR: Warmer
OTR: Other
HUREP: Hurricane report
IFR: Instrument flight rules
DSIPTS: Dissipates
WNDS: Winds
USBL: Usable
JCTN: Junction
CNVTV: Convective
BRKSHR: Berkshire
NGT: Night
DSNT: Distant
INCL: Include
LGWV: Long wave
VRG: Veering
ROTD: Rotated
MULT: Multiple
APRNTLY: Apparently
UDDF: Up and downdrafts
PRIM: Primary
CHGG: Changing
TRKG: Tracking
MID: Middle
ROT: Rotate
NE: Northeast
INVRN: Inversion
OFSHR: Offshore
BND: Bound
INTRMTRGN: Intermountain region
ARL: Air Resources Lab
DNSTRM: Downstream
COR: Correction
SHRTLY: Shortly
WI: Wisconsin
CONTS: Continues
SUPSDS: Supersedes
TRMT: Terminate
BR: Branch
THSD: Thousand
TPG: Topping
MDT: Moderate
HLTP: Hilltop
SHFTD: Shifted
SW: Southwest
CNVTVLY: Convectively
DEG: Degree
DPTH: Depth
VFR: Visual flight rules
RSTRG: Restricting
DCRG: Decreasing
WINT: Winter
RQRS: Requires
BRK: Break
STDY: Steady
CRLN: Circulation
SUFLY: Sufficiently
CHG: Change
NM: New Mexico
THRU: Through
LRGST: Largest
RLBL: Reliable
WO: Without
PTNS: Portions
COORD: Coordinate
MAN: Manitoba
AMDG: Amending
EXCLVLY: Exclusively
EST: Estimate
RNFL: Rainfall
PVLT: Prevalent
RPLCD: Replaced
LCL: Local
ELNGT: Elongate
IPV: Improve
INTS: Intense
ENHNCG: Enhancing
PTNLY: Potentially
PTLY: Partly
SYS: System
BLDG: Building
VFYD: Verified
SASK: Saskatchewan
STN: Station
DE: Delaware
LI: Lifted Index
LLWS: Low level wind shear
RLTV: Relative
AFDK: After dark
NEC: Necessary
GLFCAL: Gulf of California
WA: Washington
CRLC: Circulate
LONGL: Longitudinal
STG: Strong
WDSPRD: Widespread
OSV: Ocean station vessel
PPINE: Radar weather report no echoes
VV: Vertical velocity
OH: Ohio
SWD: Southward
THNR: Thinner
MOGR: Moderate or greater
XTRM: Extreme
WK: Weak
FRWF: Forecast wind factor
AFCT: Affect
COMPRS: Compares
MI: Michigan
INTSTY: Intensity
UNSTLD: Unsettled
WFO: Weather Forecast Office
RSTR: Restrict
SHLW: Shallow
SSEWD: South southeastward
FROPA: Frontal passage
WKNS: Weakens
AZ: Arizona
MB: Millibars
WKEND: Weekend
RPT: Repeat
SUBTRPCL: Subtropical
PNHDL: Panhandle
RPRTS: Reports
SLY: Southerly
ROTS: Rotates
LST: Local standard time
HAZ: Hazard
MTNS: Mountains
OBS: Observation
ABV: Above
FNTL: Frontal
CFP: Cold front passage
INCRS: Increases
DGNLLY: Diagonally
COMPRG: Comparing
SUF: Sufficient
CHSPK: Chesapeake
SUP: Supply
ACTV: Active
BCKG: Backing
AWT: Awaiting
HLF: Half
DGNL: Diagonal
ASSOCN: Association
DISCG: Discontinuing
N: North
LTLCG: Little change
LK: Lake
VR: Veer
DMNT: Dominant
BRKG: Breaking
SBSDD: Subsided
ABT: About
CSTL: Coastal
SBSD: Subside
VRISL: Vancouver Island, BC
TIL: Until
BTWN: Between
VCOT: VFR conditions on top
APPRS: Appears
SQLN: Squall line
LGTR: Lighter
ND: North Dakota
SML: Small
LWRG: Lowering
ACLTD: Accelerated
CLR: Clear
CLDNS: Cloudiness
MSG: Message
SPKL: Sprinkle
DRFTD: Drifted
SUPSDG: Superseding
PRESFR: Pressure falling rapidly
SCTR: Sector
ALGHNY: Allegheny
PDMT: Predominant
MNLD: Mainland
STGR: Stronger
APLCN: Appalachian
INCLG: Including
QUE: Quebec
LAWRS: Limited aviation weather reporting station
FMT: Format
HRS: Hours
TNDCY: Tendency
MPH: Miles per hour
RWY: Runway
ADVCTS: Advects
SNGL: Single
HRZN: Horizon
TX: Texas
SS: Sunset
LCTN: Location
SCSL: Stratocumulus standing lenticular
YKN: Yukon
WRS: Worse
OFC: Office
EXTN: Extension
FCSTD: Forecasted
NEW ENG: New England
CVRD: Covered
SEC: Second
EXTDG: Extending
RMNG: Remaining
SR: Sunrise
RPLC: Replace
RCHG: Reaching
MRGLLY: Marginally
REQSTD: Requested
NML: Normal
CNTYS: Counties
E: East
TSNT: Transient
WRMFNT: Warm front
LWR: Lower
RQRG: Requiring
ADQT: Adequate
SHFTS: Shifts
WEA: Weather
SLOR: Slower
WUD: Would
INCRD: Increased
STMS: Storms
NNEWD: North northeastward
WNWWD: West northwestward
RCV: Receive
INTR: Interior
ACTVTY: Activity
PLNS: Plains
TROF: Trough
RGL: Regional model
PRVDD: Provided
FLT: Flight
SPC: Storm Prediction Center
PSN: Position
TRPCD: Tropical continental air mass
EXTDS: Extends
NCO: NCEP Central Operations
PRVD: Provide
AK: Alaska
NIL: None
DMGD: Damaged
FLW: Follow
VRS: Veers
RDVLPG: Redeveloping
FLG: Falling
NMBR: Number
VMC: Visual meteorological conditions
EXPC: Expect
OBND: Outbound
BRKS: Breaks
MOVS: Moves
SUPSD: Supersede
PRECDS: Precedes
HDWND: Head wind
TCU: Towering cumulus
S: South
DSTBLZN: Destabilization
IMPT: Important
STD: Standard
NCEP: National Center of Environmental
XTNDD: Extended
CDFNT: Cold front
WNW: West northwest
PA: Pennsylvania
VSBYDR: Visibility decreasing rapidly
PBL: Planetary boundary layer
NJ: New Jersey
AWC: Aviation Weather Center
ISOLD: Isolated
KY: Kentucky
INCRGLY: Increasingly
OCNL: Occasional
WRM: Warm
ALF: Aloft
NPRS: Nonpersistent
CNVGG: Converging
CONFDC: Confidence
ELSW: Elsewhere
LN: Line
SNBNK: Snowbank
ARPT: Airport
THKNG: Thickening
AHD: Ahead
NWLY: Northwesterly
LONG: Longitude
HND: Hundred
GEOREF: Geographical reference
PSBLTY: Possibility
DLTD: Deleted
PS: Plus
MIDN: Midnight
NWD: Northward
THKST: Thickest
RMNDR: Remainder
DTRTG: Deteriorating
SN: Snow
RTRNG: Returning
OTRW: Otherwise
PRSTS: Persists
GA: Georgia
ICG: Icing
WRMG: Warming
SUG: Suggest
MAX: Maximum
RTRN: Return
WRMFNTL: Warm frontal
UA: Pilot weather reports
ICAO: International Civil Aviation Organization
OBSC: Obscure
UNSBL: Unseasonable
PLS: Please
FLRYS: Flurries
S RLTVLY: Relatively
ALUTN: Aleutia
UNRSTD: Unrestricted
CNCL: Cancel
LLJ: Low level jet
CC: Cirrocumulus
THNST: Thinnest
AMDT: Amendment
NW: Northwest
RAOB: Radiosonde observation
CS: Cirrostratus
RADAT: Radiosonde additional data
MRNG: Morning
DWPNT: Dew point
FRZLVL: Freezing level
MT: Montana
THR: Threshold
HLSTO: Hailstones
ENERN: East northeastern
HIFOR: High level forecast
PRECD: Precede
RPLCG: Replacing
SBSDS: Subsides
NAV: Navigation
ZNS: Zones
SNST: Sunset
PVLD: Prevailed
MDFY: Modify
SPLNS: Southern Plains
TDA: Today
CNTR: Center
VSB: Visible
DIR: Direction
VLCTYS: Velocities
POS: Positive
UNKN: Unknown
DFCLT: Difficult
ICGIP: Icing in precipitation
MD: Maryland
AFOS: Automated Field Operations System
OCLDD: Occluded
CCSL: Cirrocumulus standing lenticular
BAJA: Baja, California
AGRD: Agreed
GICG: Glaze icing
GLFMEX: Gulf of Mexico
METAR: Aviation routine weather report
ACRS: Across
OTLK: Outlook
SPCLY: Especially
RCMDG: Recommending
AFTN: Afternoon
INTMTLY: Intermittently
LKS: Lakes
RES: Reserve
OFP: Occluded frontal passage
BFDK: Before dark
LTGIC: Lightning in cloud
UNSATFY: Unsatisfactory
MOVMT: Movement
DSTBLZ: Destabilize
NEG: Negative
AVBL: Available
XTNDG: Extending
PTCHY: Patchy
LAT: Latitude
HR: Hour
WBND: Westbound
EFCT: Effect
TCNTL: Transcontinental
DVLP: Develop
FLWG: Following
LRG: Large
TMW: Tomorrow
TSFR: Transfer
INTMD: Intermediate
RCRDS: Records
LTGCG: Lightning cloud to ground
STBLTY: Stability
CHCS: Chances
OMTNS: Over mountains
DMSHS: Diminishes
SWLY: Southwesterly
ADQTLY: Adequately
AFSS: Automated Flight Service Station
R: Rain
BLKT: Blanket
CTSKLS: Catskills
VFY: Verify
TRIB: Tributary
CEP: Central Operations
UNSTL: Unsettle
ETA: Estimated time of arrival or ETA model
OVRN: Overrun
INCRG: Increasing
SLGTLY: Slightly
SPRDS: Spreads
GEO: Geographic
ALTHO: Although
ERY: Early
LTD: Limited
THKNS: Thickness
GSTY: Gusty
LLWAS: Low level wind shear alert system
INDEF: Indefinite
F: Fahrenheit
ROTG: Rotating
ENE: East northeast
GRDLY: Gradually
RGNS: Regions
VAAS: Volcanic Ash Advisory Statement
TWI: Twilight
AMPG: Amplifying
AMPLTD: Amplitude
FILG: Filling
GRT: Great
WSWWD: West southwestward
TROP: Tropopause
RSTRD: Restricted
OBSCD: Obscured
DVRG: Diverge
RQR: Require
WSWLY: West southwesterly
PVLS: Prevails
ID: Idaho
CVR: Cover
QTR: Quarter
PGTSND: Puget Sound
TURBC: Turbulence
ADVCTN: Advection
FLRY: Flurry
RQRD: Required
EXPCG: Expecting
ENHNCD: Enhanced
ALT: Altitude
CWSU: Center Weather Service Units
FRST: Frost
ADJ: Adjacent
ME: Maine
AGRS: Agrees
FRZN: Frozen
SEPN: Separation
VRT MOTN: Vertical motion
STBL: Stable
XPLOS: Explosive
SMLR: Smaller
AFCTD: Affected
IMPLS: Impulses
OK: Oklahoma
MCD: Mesoscale discussion
YDA: Yesterday
ICGIC: Icing in clouds
MS: Mississippi
AMP: Amplify
UT: Utah
DURG: During
PRESRR: Pressure rising rapidly
ORIG: Original
ABNML: Abnormal
ESERN: East southeastern
EXTSV: Extensive
PRECDG: Preceding
CIGS: Ceilings
FQTLY: Frequently
INVOF: In vicinity of
FA: Aviation area forecast
SMRY: Summary
TSFRS: Transfers
UNSTBL: Unstable
CONTRAILS: Condensation trails
BRM: Barometer
DSTBLZD: Destabilized
FRM: Form
SRNDD: Surrounded
UN: Unable
NLY: Northerly
RESTR: Restrict
INTSFY: Intensify
DCR: Decrease
INDCS: Indicates
SYNS: Synopsis
IC: Ice (in PIREPs only)
ADVCTD: Advected
PAC: Pacific
FVRBL: Favorable
ETIM: Elapsed time
BLD: Build
CIG: Ceiling
WAA: Warm air advection
WNWLY: West northwesterly
REPL: Replace
MN: Minnesota
ETC: Et cetera
SRN: Southern
SNOINCR: Snow increase
RDVLP: Redevelop
BNTH: Beneath
WVS: Waves
PVA: Positive vorticity advection
DFNTLY: Definitely
RCVG: Receiving
WKDAY: Weekday
ESTAB: Establish
SHWR: Shower
UPDFTS: Updrafts
SUPG: Supplying
NWS: National Weather Service
HI: Hawaii
DMGG: Damaging
MULTILVL: Multilevel
PHYS: Physical
WRN: Western
WTR: Water
PWR: Power
BATROP: Barotropic
TNDCYS: Tendencies
BLZD: Blizzard
NEB: Nebraska
ARND: Around
BNDRYS: Boundaries
AOA: At or above
WNWRN: West northwestern
BGNG: Beginning
RUF: Rough
INDC: Indicate
CNCLD: Canceled
LTG: Lightning
UTC: Universal Time Coordinate
MRTM: Maritime
RSG: Rising
DVV: Downward vertical velocity
ATTM: At this time
SRND: Surround
NB: New Brunswick
DMSHD: Diminished
DSTBLZS: Destabilizes
SHRTWV: Shortwave
INCR: Increase
BGNS: Begins
COMPRD: Compared
CONTG: Continuing
EXTDD: Extended
INTCNTL: Intercontinental
SOP: Standard operating procedure
RI: Rhode Island
DVLPS: Develops
PSG: Passage
XCP: Except
PRIN: Principal
RCHD: Reached
THRFTR: Thereafter
PROC: Procedure
ERYR: Earlier
SEQ: Sequence
ONSHR: On shore
ADVN: Advance
CNCLG: Canceling
FWD: Forward
BHND: Behind
TWD: Toward
FQT: Frequent
DSNDS: Descends
TURBT: Turbulent
NOPAC: Northern Pacific
DVLPG: Developing
RDC: Reduce
DURD: During descent
ESELY: East southeasterly
PRBLTY: Probability
ICGICIP: Icing in clouds and in precipitation
PSBL: Possible
INDCD: Indicated
SMTH: Smooth
RCMDS: Recommends
OR: Oregon

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Number of cards 1276