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Weather Prediction Center (WPC) List of Abbreviations and Acronyms
EXPLANATION OF ABBREVIATIONS AND ACRONYMS




Contained in this document is a list of abbreviations and acronyms which may appear in Weather Prediction Center (WPC) discussions. Use the alphabetical index below or scroll through the entire list.
 
A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
State Abbreviations      Forecast Models

View additional definitions of meteorological terms and abbreviations at the new National Weather Service Glossary

 
A
A ARCTIC
ABNDT ABUNDANT
ABT ABOUT
ABV ABOVE
ACCUM ACCUMULATE
ACLT ACCELERATE
ACPT ACCEPT
ACRS ACROSS
ACTV ACTIVE
ACYC ANTICYCLONIC
ADDN ADDITION
ADJ ADJACENT
ADQT ADEQUATE
ADRNDCK ADIRONDACK
ADVCTN ADVECTION
ADVN ADVANCE
AFCT AFFECT
AFT AFTER
AFTN AFTERNOON
AGRMT AGREEMENT
AHD AHEAD
ALF ALOFT
ALG ALONG
ALQDS ALL QUADRANTS
ALTA ALBERTA
AM ANTE MERIDIEM
AMPLTD AMPLITUDE
AMS AIR MASS
AMT AMOUNT
AOA AT OR ABOVE
AOB AT OR BELOW
APCH APPROACH
APLCN APPALACHIAN
APRNT APPARENT
APRX APPROXIMATE
ARND AROUND
ASL ABOVE SEA LEVEL
ATLC ATLANTIC
ATTM AT THIS TIME
AVBL AVAILABLE
AVG AVERAGE
AVN AVIATION MODEL
AWT AWAIT or AWAITING

 
B
B BLUE
BC PATCHES
BC BRITISH COLUMBIA
BCH BEACH
BCKG BACKING
BCM BECOME
BDA BERMUDA
BDR BORDER
BFDK BEFORE DARK
BFR BEFORE
BGN BEGAN or BEGIN
BHND BEHIND
BKN BROKEN
BL BLOWING
BLD BUILD
BLDG BUILDING
BLDU BLOWING DUST
BLDUP BUILDUP
BLKHLS BLACK HILLS
BLO BELOW
BLSA BLOWING SAND
BLSN BLOWING SNOW
BLZD BLIZZARD
BNDRY BOUNDARY
BOMB BOMBING
BR BRANCH
BR MIST
BRF BRIEF
BRGT BRIGHT
BRK BREAK
BRKSHR BERKSHIRE
BTR BETTER
BTWN BETWEEN
BY BLOWING SPRAY
BYD BEYOND

 
C
C CELSIUS
C CONTINENTAL AIR MASS
CAA COLD AIR ADVECTION
CAN CANADA
CARIB CARIBBEAN
CASCDS CASCADES
CB CUMULONIMBUS
CCLKWS COUNTERCLOCKWISE
CDFNT COLD FRONT
CENPAC CENTRAL NORTH PACIFIC
CFN CONFINE
CFP COLD FRONT PASSAGE
CHC CHANCE
CHG CHANGE
CHGO CHANGING OVER
CHSPK CHESAPEAKE
CI CIRRUS
CIG CEILINGS
CLD CLOUD
CLR CLEAR BELOW 12,000 FEET
CLKWS CLOCKWISE
CLSD CLOSED
CMA COMMA
CMNC COMMENCE
CMPCT COMPACT
CMPLX COMPLEX
CNCT CONNECT
CNDN CANADIAN
CNTR CENTER
CNTRL CENTRAL
CNVG CONVERGE
CNVTV CONVECTIVE
COMB COMBINE
COMPR COMPARE
CONC CONCRETE
COND CONDITION
CONFDC CONFIDENCE
CONS CONTINUES
CONT CONTINUES or CONTINUOUSLY
CONTDVD CONTINENTAL DIVIDE
CONUS CONTINENTAL UNITED STATES
COORD COORDINATES
COR CORRECT or CORRECTED or CORRECTION
COT AT THE COAST
CPBL CAPABLE
CPD COUPLED
CRC CIRCLE
CRLC CIRCULATE
CRZ CRUISE
CSDR CONSIDER
CSDRBL CONSIDERABLE
CST COAST
CTSKLS CATSKILLS
CU CUMULUS
CUF CUMULIFORM
CVR COVER
CWA COUNTY WARNING AREA
CYC CYCLONIC
CYCLGN CYCLOGENESIS

 
D
DABRK DAYBREAK
DALGT DAYLIGHT
DBL DOUBLE
DBTF DOUBTFUL
DC DISTRICT OF COLUMBIA
DCLRT DECELERATE
DCR DECREASE
DCT DIRECT
DEG DEGREE
DEP DEPARTURE
DESTN DESTINATION
DEV DEVIATION
DFCLT DIFFICULT
DFNT DEFINITE
DFRS DIFFERS
DFUS DIFFUSE
DGR DANGER
DIAM DIAMETER
DIF DIFFUSE
DISC DISCONTINUE
DIST DISTANCE
DIST DISTRICT
DIV DIVERT or DIVISION
DKTS DAKOTAS
DLA DELAY
DLT DELETE
DLVR DELIVER
DLY DELAY
DMG DAMAGE
DMNT DOMINANT
DMSH DIMINISH
DNS DENSE
DNSLP DOWNSLOPE
DNSTRM DOWNSTREAM
DNWND DOWNWIND
DP DEEP
DPNG DEEPENING
DPTH DEPTH
DR LOW DRIFTING
DRCT DIRECT
DRCTN DIRECTION
DRDU LOW DRIFTING DUST
DRFT DRIFT
DRG DURING
DRSA LOW DRIFTING SAND
DRSN LOW DRIFTING SNOW
DRZL DRIZZLE
DS DUST STORM
DSIPT DISSIPATE
DSNT DISTANT
DSRGD DISREGARD
DST DISTORT
DSTC DISTANCE
DSTND DESTINED
DTL DETAIL
DTRM DETERMINE
DTRT DETERIORATE
DU WIDESPREAD DUST
DUR DURATION
DURG DURING
DURN DURATION
DVLP DEVELOP
DVRG DIVERGE
DVRSN DIVERSION
DVV DOWNWARD VERTICAL VELOCITY
DWPNT DEWPOINT
DZ DRIZZLE

 
E
E EAST or EASTERN LONGITUDE
E EQUATORIAL AIR MASS
EBND EASTBOUND
EFCT EFFECT
ELEV ELEVATE or ELEVATION
ELIP ELLIPTICAL
ELNGT ELONGATE
ELSW ELSEWHERE
ELY EASTERLY
EMBDD EMBEDDED
ENDG ENDING
ENE EAST-NORTH EAST
ENERN EAST-NORTHEASTERN
ENEWD EAST-NORTHEASTWARD
ENHNCD ENHANCED
ENHNCMNT ENHANCEMENT
ENRT EN ROUTE
ENTR ENTIRE
ERN EASTERN
ERY EARLY
ESE EAST-SOUTH EAST
ESERN EAST-SOUTHEASTERN
ESEWD EAST-SOUTHEASTWARD
ESNTL ESSENTIAL
ETC ET CETERA
EVAL EVALUATE or EVALUATION
EVE EVENING
EXCLD EXCLUDE
EXCLV EXCLUSIVE
EXCP EXCEPT
EXPC EXPECT
EXPS EXPRESS
EXTD EXTEND
EXTN EXTENSION
EXTRM EXTREME
EXTSV EXTENSIVE

 
F
FA AREA FORECAST
FAH FAHRENHEIT
FC FUNNEL CLOUD
+FC TORNADO or WATERSPOUT
FCST FORECAST
FG FOG (under 5/8 mile visibility)
FIG FIGURE
FLCTN FLUCTUATION
FLDST FLOOD STAGE
FLG FALLING
FLRY FLURRY
FLUC FLUCTUATING
FLW FOLLOW
FLWIS FLOOD WARNING ISSUED
FM FROM
FNCTN FUNCTION
FNT FRONT
FNTGNS FRONTOGENESIS
FNTLYS FRONTOLYSIS
FORNN FORENOON
FRMG FORMING
FQT FREQUENT
FRMG FORMING
FROPA FRONTAL PASSAGE
FRZ FREEZE
FRZLVL FREEZING LEVEL
FRZN FROZEN
FT FOOT or FEET
FTHR FARTHER or FURTHER
FU SMOKE
FWD FORWARD
FZ SUPERCOOLED or FREEZING
FZDZ FREEZING DRIZZLE
FZFG FREEZING FOG
FZRA FREEZING RAIN

 
G
GEN GENERAL
GLFALSK GULF OF ALASKA
GLFCAL GULF OF CALIFORNIA
GLFMEX GULF OF MEXICO
GLFSTLAWR GULF OF ST. LAWRENCE
GMT GREENWICH MEAN TIME
GND GROUND
GNDFG GROUND FOG
GR HAIL OF 1/4" DIAMETER OR MORE
GRAD GRADIENT
GRBNKS GRAND BANKS
GRDL GRADUAL
GRTLKS GREAT LAKES
GS SNOW PELLETS or
HAIL UNDER 1/4" IN DIAMETER
GSTS GUSTS
GSTY GUSTY
GTR GREATER

 
H
HAZ HAZARD
HCVIS HIGH CLOUDS VISIBLE
HDFRZ HARD FREEZE
HDSVLY HUDSON VALLEY
HGT HEIGHT
HI HIGH
HIEAT HIGHEST TEMPERATURE 
EQUALED FOR ALL TIME
HIEFM HIGHEST TEMPERATURE
EQUALED FOR THE MONTH
HIESE HIGHEST TEMPERATURE
EQUALED SO EARLY
HIESL HIGHEST TEMPERATURE
EQUALED SO LATE
HITMP HIGHEST TEMPERATURE
HIXAT HIGHEST TEMPERATURE
EXCEEDED FOR ALL TIME
HIXSE HIGHEST TEMPERATURE
EXCEEDED SO EARLY
HIXSL HIGHEST TEMPERATURE
EXCEEDED SO LATE
HLF HALF
HLSTO HAILSTONES
HOL HOLIDAY
HPA HECTOPASCAL
HR HERE or HOUR
HRZN HORIZON
HURCN HURRICANE
HVY HEAVY
HWVR HOWEVER
HYR HIGHER
HZ HAZE

 
I
IC ICE CRYSTALS
ICG ICING
IMDT IMMEDIATE
IMP IMPRACTICABLE
IMPL IMPULSE
IMPR IMPROVE
IMPT IMPORTANT
IMT IMMEDIATE or IMMEDIATELY
IN INCH
INADQT INADEQUATE
INCL INCLUDE
INCLV INCLUSIVE
INCOMP INCOMPLETE
INCOR INCORRECT
INCR INCREASE
INDC INDICATE
INDEF INDEFINITE
INFO INFORMATION
INLD INLAND
INSTBY INSTABILITY
INTCNTL INTERCONTINENTAL
INTCP INTERCEPT
INTMT INTERMITTENT
INTR INTERIOR
INTRMTRGN INTERMOUNTAIN REGION
INTS INTENSE
INTSFY INTENSIFY
INTXN INTERSECTION
INVOF IN THE VICINITY OF
INVRN INVERSION
IPV IMPROVE
IS ISLAND
ISOL ISOLATE

 
J
JCTN JUNCTION
JTSTR JET STREAM

 
K
K COLD AIR MASS
KFRST KILLING FROST
KM KILOMETERS
KT KNOTS

 
L
LABRDR LABRADOR
LAT LATITUDE
LCLY LOCALLY
LCT LOCATE
LFT LIFT
LGT LIGHT
LGWV LONGWAVE
LK LAKE
LKLY LIKELY
LLWS LOW LEVEL WIND SHEAR
LMT LIMIT
LN LINE
LND LAND
LOC LOCALLY
LOEAT LOWEST TEMPERATURE
EQUALED FOR ALL TIME
LOEFM LOWEST TEMPERATURE
EQUALED FOR THE MONTH
LOESE LOWEST TEMPERATURE
EQUALED SO EARLY
LOESL LOWEST TEMPERATURE 
EQUALED SO LATE
LONG LONGITUDE
LOTMP LOWEST TEMPERATURE
LOXAT LOWEST TEMPERATURE
EXCEEDED FOR ALL TIME
LOXFM LOWEST TEMPERATURE
EXCEEDED FOR THE MONTH
LOXSE LOWEST TEMPERATURE
EXCEEDED SO EARLY
LOXSL LOWEST TEMPERATURE
EXCEEDED SO LATE
LRG LARGE or LONG RANGE
LTL LITTLE
LTLCG LITTLE CHANGE
LTNG LIGHTNING
LTR LATER
LTTR LATTER
LV LEAVE
LVG LEAVING
LVL LEVEL
LWR LOWER
LYR LAYER OR LAYERED OR LAYERS

 
M
M MARITIME AIR MASS
MA MAP ANALYSIS
MAN MANITOBA or MANUAL
MAX MAXIMUM
MB MILLIBARS
MDFY MODIFY
MDT MODERATE
MEGG MERGING
MET METEOROLOGICAL
METRO METROPOLITAN
MEX MEXICO
MHKVLY MOHAWK VALLEY
MI MILE or SHALLOW
MID MIDDLE
MIDN MIDNIGHT
MIDPT MIDPOINT
MIFG PATCHES OF SHALLOW FOG
LESS THAN TWO METERS IN DEPTH
MIN MINIMUM or MINUTE
MISG MISSING
MLTLVL MELTING LEVEL
MNLD MAINLAND
MNLY MAINLY
MONTR MONITOR
MOS MODEL OUTPUT STATISTICS
MOV MOVE
MPH MILES PER HOUR
MRG MEDIUM RANGE
MRGL MARGINAL
MRNG MORNING
MRTM MARITIME
MSL MEAN SEA LEVEL
MSTR MOISTURE
MSTLY MOSTLY
MSTR MOISTURE
MTN MOUNTAIN
MTRY MOMENTARY
MULT MULTIPLE
MXD MIXED

 
N
N NORTH or NORTHERN LATITUDE
NAR NOT ACCORDING TO ROUTINE
NAT NORTH ATLANTIC
NATL NATIONAL
NB NEW BRUNSWICK
NBND NORTHBOUND
NBRHD NEIGHBORHOOD
NC NO CHANGE
NE NORTHEAST
NB NORTHBOUND
NEG NEGATIVE
NELY NORTHEASTERLY
NERN NORTHEASTERN
NEWD NORTHEASTWARD
NEW ENG NEW ENGLAND
NFLD NEWFOUNDLAND
NGT NIGHT
NLT NO LATER THAN
NLY NORTHERLY
NM NAUTICAL MILE
NMBR NUMBER
NML NORMAL
NMRS NUMEROUS
NNE NORTH-NORTH EAST
NNERN NORTH-NORTHEASTERN
NNEWD NORTH-NORTHEASTWARD
NNW NORTH-NORTH WEST
NNWRN NORTH-NORTHWESTERN
NNWWD NORTH-NORTHWESTWARD
NOPAC NORTH PACIFIC
NOSIG NO SIGNIFICANT CHANGE
NR NEAR
NRN NORTHERN
NRW NARROW
NS NOVA SCOTIA or NIMBOSTRATUS
NTE NOT TO EXCEED
NVA NEGATIVE VORTICITY ADVECTION
NW NORTHWEST
NWB NORTHWEST BOUND
NWD NORTHWARD
NWLY NORTHWESTERLY
NWRN NORTH-WESTERN
NWS NATIONAL WEATHER SERVICE
NWWD NORTHWESTWARD

 
O
OBS OBSERVATION
OBSC OBSCURE
OCFNT OCCLUDED FRONT
OCLD OCCLUDE
OCLN OCCLUSION
OCNL OCCASIONAL
OCR OCCUR
OFP OCCLUDED FRONTAL PASSAGE
OFSHR OFFSHORE
OMTS OVER MOUNTAINS
ONSHR ONSHORE
ONT ONTARIO
OPN OPEN
ORGPHC OROGRAPHIC
OTLK OUTLOOK
OTR OTHER
OTRW OTHERWISE
OVC OVERCAST
OVD OVERDUE
OVHD OVERHEAD
OVNGT OVERNIGHT
OVR OVER
OVRN OVERRUN

 
P
P POLAR AIR MASS
PAC PACIFIC
PARL PARALLEL
PAT PATTERN
PBL PROBABLE
PCPN PRECIPITATION
PD PERIOD
PDMT PREDOMINANT or PREDOMINATE
PEN PENINSULA
PGTSND PUGET SOUND
PL ICE PELLETS
PM POST MERIDIEM
PMT PERMIT
PNHDL PANHANDLE
PO DUST DEVIL
POP PROBABILITY OF PRECIPITATION
PPINE RADAR REPORT WITH NO
ECHOES OBSERVED
PR PARTIAL
PRBLTY PROBABILITY
PRCTN PRECAUTION
PRECD PRECEDE
PRES PRESSURE
PREV PREVIOUS
PRIN PRINCIPAL
PRIND PRESENT INDICATIONS ARE
PROCD PROCEED
PROG PROGNOSIS or PROGNOSTIC
or PROGRESS
PROPA PROPAGATION
PRSNT PRESENT
PRST PERSIST
PSBL POSSIBLE
PSG PASSAGE or PASSING
PSN POSITION
PST PACIFIC STANDARD TIME
PTCHY PATCHY
PTLY PARTLY
PTN PORTION
PVA POSITIVE VORTICITY ADVECTION
PVL PREVAIL
PWR POWER
PY SPRAY

 
Q
QLFY QUALIFY
QLTY QUALITY
QN QUESTION
QNTY QUANTITY
QPF QUANTITATIVE PRECIPITATION FORECAST
QSTNRY QUASISTATIONARY
QTR QUARTER
QUAD QUADRANT
QUE QUEBEC

 
R
RA RAIN
RAOB RAWINSONDE OBSERVATION
RCH REACH
RCKY ROCKIES (MOUNTAINS)
RCMD RECOMMEND
RCRD RECORD
RCV RECEIVE
RDC REDUCE
RDG RIDGE
RECON RECONNAISSANCE
REF REFERENCE
RELBL RELIABLE
RESP RESPONSE
RESTR RESTRICT
RGD RAGGED
RGLR REGULAR
RGN REGION
RH RELATIVE HUMIDITY
RIOGD RIO GRANDE
RLS RELEASE
RLTV RELATIVE
RMN REMAIN
RNFL RAINFALL
ROT ROTATE
RPD RAPID
RSG RISING
RSN REASON
RSTR RESTRICT
RSVN RESERVATION
RTRD RETARD
RTRN RETURN

 
S
S SOUTH or SOUTHERN LATITUDE
SA SANDSTORM or DUSTSTORM
SASK SASKATCHEWAN
SATFY SATISFY or SATISFACTORY
SB SOUTHBOUND
SBSD SUBSIDE
SC STRATOCUMULUS
SCND SECOND (IN A SERIES)
SCT SCATTERED
SCTR SECTOR
SE SOUTHEAST
SEB SOUTHEAST BOUND
SEC SECOND (FRACTION OF A MINUTE)
SELS SEVERE LOCAL STORMS
SELY SOUTHEASTERLY
SEPN SEPARATION
SEQ SEQUENCE
SERN SOUTHEASTERN
SEV SEVERE
SEWD SOUTHEASTWARD
SFC SURFACE
SFERICS ATMOSPHERICS
SG SNOW GRAINS
SGFNT SIGNIFICANT
SGL SIGNAL
SHFT SHIFT
SHGR HAIL SHOWERS
(>=1/4" DIAMETER)
SHGS HAIL SHOWERS
(<1/4" DIAMETER)
SHLW SHALLOW
SHPL ICE PELLET SHOWERS
SHRA RAIN SHOWERS
SHRT SHORT
SHRTLY SHORTLY
SHRTWV SHORTWAVE
SHSN SNOW SHOWER
SHUD SHOULD
SHWR SHOWER
SIERNEV SIERRA NEVADA
SIG SIGNATURE
SIGWX SIGNIFICANT WEATHER
SKC SKY CLEAR
SL SEA LEVEL or SICK LEAVE
SLCT SELECT
SLD SOLID
SLGT SLIGHT
SLO SLOW
SLT SLEET
SLP SEA LEVEL PRESSURE
SLY SOUTHERLY
SM STATUTE MILE
SML SMALL
SMRY SUMMARY
SMTH SMOOTH
SMTM SOMETIME
SMWHT SOMEWHAT
SN SNOW
SNBNK SNOWBANK
SNFLK SNOWFLAKE
SNGL SINGLE
SNOINCR SNOW DEPTH INCREASE
IN PAST HOUR
SNW SNOW
SNWFL SNOWFALL
SP STATION PRESSURE
SPCLY ESPECIALLY
SPD SPEED
SPKL SPRINKLE
SPLNS SOUTH PLAINS
SPRD SPREAD
SQ SQUALL
SQLN SQUALL LINE
SR SUNRISE
SRCH SEARCH
SRND SURROUND
SS SANDSTORM
SSE SOUTH-SOUTHEAST
SSERN SOUTH-SOUTHEASTERN
SSEWD SOUTH-SOUTHEASTWARD
SSW SOUTH-SOUTHWEST
SSWRN SOUTH-SOUTHWESTERN
SSWWD SOUTH-SOUTHWESTWARD
ST STRATUS
STAGN STAGNATION
STBL STABLE
STDY STEADY
STFRA STRATUS FRACTUS
STFRM STRATIFORM
STG STRONG
STLT SATELLITE
STM STORM
STNRY STATIONARY
SUF SUFFICIENT
SUG SUGGEST
SUP SUPPLY
SUPR SUPERIOR
SVR SEVERE
SVRL SEVERAL
SW SOUTHWEST
SWB SOUTHWEST BOUND
SWD SOUTHWARD
SWLG SWELLING
SWLY SOUTHWESTERLY
SWRN SOUTHWESTERN
SXN SECTION
SYS SYSTEM

 
T
TAND TANDUM
TC TROPICAL CYCLONE
TCU TOWERING CUMULUS
TDA TODAY
TELCO TELEPHONE COMPANY
TEMP TEMPERATURE
THD THUNDERHEAD
THDR THUNDER
THK THICK
THN THIN
THRFTR THEREAFTER
THRU THROUGH
THRUT THROUGHOUT
THSD THOUSAND
THTN THREATEN
TIL UNTIL
TMPRY TEMPORARY
TMT TRANSMIT
TMW TOMORROW
TNDCY TENDENCY
TNGT TONIGHT
TNTV TENTATIVE
TOP CLOUD TOP
TPG TOPPING
TRBL TROUBLE
TRIB TRIBUTARY
TRNSP TRANSPORT
TROF TROUGH
TROP TROPOPAUSE
TRPCD TROPICAL CONTINENTAL
AIR MASS
TRPCL TROPICAL
TRRN TERRAIN
TSFR TRANSFER
TSGR THUNDERSTORM WITH HAIL
OF 1/4" OR MORE IN DIAMETER
TSGS THUNDERSTORM WITH HAIL
LESS THAN 1/4" IN DIAMETER
TSPAC TRANSPACIFIC
TSRA THUNDERSTORM WITH RAIN
TSTM THUNDERSTORM
TURBT TURBULENT
TVL TRAVEL
TWD TOWARD
TWI TWILIGHT
TWR TOWER
TYPH TYPHOON

 
U
UFN UNTIL FURTHER NOTICE
UN UNABLE
UNAVBL UNAVAILABLE
UNEC UNNECESSARY
UNHRD UNHEARD
UNKN UNKNOWN
UNL UNLIMITED
UNRELBL UNRELIABLE
UNSBL UNSEASONABLE
UNSTBL UNSTABLE
UNSTDY UNSTEADY
UNSTL UNSETTLE
UNUSBL UNUSABLE
UP UP or UNKNOWN PRECIPITATION
UPR UPPER
UPSLP UPSLOPE
UPSTRM UPSTREAM
URG URGENT
USBL USABLE
UTC COORDINATED UNIVERSAL TIME
UVV UPWARD VERTICAL VELOCITY
UWNDS UPPER WINDS

 
V
VA VOLCANIC ASH
VARN VARIATION
VCFG FOG IN VICINITY
VCNTY VICINITY
VFY VERIFY
VIA BY WAY OF
VIS VISIBILITY
VLCTY VELOCITY
VLNT VIOLENT
VLY VALLEY
VOT VORTICITY
VR VEER
VRBL VARIABLE
VRISL VANCOUVER ISLAND
VRT MOTN VERTICAL MOTION
VSBY VISIBILITY

 
W
W WARM AIR MASS or WHITE or
WEST or WESTERN LONGITUDE
WAA WARM AIR ADVECTION
WB WESTBOUND
WBTS WHEREABOUTS
WDLY WIDELY
WDSPRD WIDESPREAD
WEA WEATHER
WFP WARM FRONT PASSAGE
WI WITHIN
WINT WINTER
WK WEAK
WKDAY WEEKDAY
WKEND WEEKEND
WKN WEAKEN
WL WILL
WND WIND
WNW WEST-NORTH WEST
WNWRN WEST-NORTHWESTERN
WNWWD WEST-NORTHWESTWARD
WO WITHOUT
WPC WEATHER PREDICTION CENTER
WPLTO WESTERN PLATEAU
WRM WARM
WRMFNT WARM FRONT
WRN WESTERN
WRNG WARNING
WRS WORSE
WS WIND SHEAR
WSHFT WIND SHIFT
WSTCH WASATCH RANGE
WSW WEST-SOUTHWEST
WSWRN WEST-SOUTHWESTERN
WSWWD WEST-SOUTHWESTWARD
WTSPT WATERSPOUT
WV WAVE
WWD WESTWARD
WWW WORLD WIDE WEB
WX WEATHER

 
X
XCP EXCEPT
XPC EXPECT
XPLOS EXPLOSIVE

 
Y
YDA YESTERDAY
YKN YUKON
YLSTN YELLOWSTONE

 
Z
Z GREENWICH MEAN TIME
ZI ZONAL INDEX
ZRNO FREEZING RAIN INFORMATION
NOT AVAILABLE

 
Numerical Forecast Models
CMC Canadian Meteorological Centre
ECMWF European Centre for Medium-Range Weather Forecasts
GEM Global Environment Multiscale (CMC's short-range model)
GFDL Geophysical Fluid Dynamics Laboratory's Hurricane Model
GFS Global Forecast System (formerly known as the AVN and MRF)
MM5 Penn State University/National Center for Atmospheric Research's Mesoscale Model
NAM North American Mesoscale (formerly known as the Eta)
NAVGEM NAVy Global Environment Model
NGM Nested Grid Model
NOGAPS Navy Operational Global Atmospheric Prediction System
RUC Rapid Update Cycle Forecast Model
SREF Short Range Ensemble Forecasts
UKMET United Kingdom Meteorological Office

 
Two-letter State and Territory Abbreviations
AL Alabama LA Louisiana OH Ohio
AK Alaska ME Maine OK Oklahoma
AZ Arizona MD Maryland OR Oregon
AR Arkansas MA Massachusetts PA Pennsylvania
CA California MI Michigan PR Puerto Rico
CO Colorado MN Minnesota RI Rhode Island
CT Connecticut MS Mississippi SC South Carolina
DE Delaware MO Missouri SD South Dakota
DC District of Columbia MT Montana TN Tennessee
FL Florida NE Nebraska TX Texas
GA Georgia NV Nevada UT Utah
HI Hawaii NH New Hampshire VT Vermont
ID Idaho NJ New Jersey VA Virginia
IL Illinois NM New Mexico WA Washington
IN Indiana NY New York WV West Virginia
IA Iowa NC North Carolina WI Wisconsin
KS Kansas ND North Dakota WY Wyoming
KY Kentucky

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