Weather Abbreviations Flashcards
1
Q
A
A
Altimeter setting proceeded by 4 numbers
2
Q
A01
A
AUTOMATED OBSERVATION WITHOUT PRECIPITATION DISCRIMINATOR
3
Q
A02
A
AUTOMATED OBSERVATION WITH PRECIPITATION DISCRIMINATOR
4
Q
AAWF
A
AUXILIARY AVIATION WEATHER FACILITY
5
Q
ACYC
A
ANTICYCLONIC
6
Q
ADV
A
ADVISE
7
Q
ADVCTN
A
ADVECTION
8
Q
ADVY
A
ADVISORY
9
Q
AFC
A
AREA FORECAST CENTRE
10
Q
AFDK
A
AFTER DARK
11
Q
ALF
A
ALOFT
12
Q
ALSEC
A
ALL SECTORS
13
Q
ALQDS
A
ALL QUADRANTS
14
Q
ALWF
A
ACTUAL WIND FACTOR
15
Q
AMD
A
AMENDED FORECASTS (TAF)
16
Q
AMS
A
AIR MASS
17
Q
ANLYS
A
ANALYSIS
18
Q
ASOS
A
AUTOMATED SURFACE OBSERVING SYSTEM
19
Q
ATLC
A
ATLANTIC
20
Q
AURBO
A
AURORA BOREALIS
21
Q
AUTO
A
AUTOMATED (METAR) NO HUMAN INTERVENTION
22
Q
AWOS
A
AUTOMATIC WEATHER OBSERVING/REPORTING SYSTEM
23
Q
AWP
A
AVIATION WEATHER PROCESSORS
24
Q
B
A
BEGINNING OF PRECIPITATION (TIME IN MINUTES) (WX REPORTS ONLY)
25
BCH
BEACH
26
BCKG
BACKING
27
BDA
BERMUDA
28
BECMG
BECOMING(EXPECTED BETWEEN 2 DIGIT BEGINNING HOUR AND 2 DIGIT ENDING HOUR)
29
BFDK
BEFORE DARK
30
BINOVC
BREAKS IN OVERCAST
31
BKN
BROKEN
32
BL
BETWEEN LAYERS
33
BL
BLOWING (METAR)
34
BLD
BUILD
35
BLDUP
BUILDUP
36
BLKT
BLANKET
37
BLO
BELOW (ICAO) / (BELOW CLOUDS - METAR)
38
BLW
BELOW (ICAO)
39
BLZD
BLIZZARD
40
BMS
BASIC METEOROLOGICAL SERVICES
41
BNDRY
BOUNDARY
42
BRF
BRIEF
43
BRK
BREAK
44
BRKHIC
BREAKS IN HIGHER OVERCAST
45
BRM
BAROMETER
46
BTL
BETWEEN LAYERS
47
BTWN
BETWEEN
48
C
CONTINENTAL AIR MASS
49
CA
CLEAR ABOVE (PIREP ONLY)
50
CAN
CANADA
51
CARIB
CARIBBEAN
52
CASCDS
CASCADES
53
CAT
CLEAR AIR TURBULENCE (GENERAL)
54
CAVOK
CLOUD AND VISIBILITY OK (METAR)
55
CAVU
CLEAR OR SCATTERED CLOUDS AND VISIBILIY GREATER THAN TEN MILES
56
CAWS
COMMON AVIATION WEATHER SUB-SYSTEM
57
CCLKWS
COUNTERCLOCKWISE
58
CDFNT
COLD FRONT
59
CFP
COLD FRONT PASSAGE
60
CHARC
CHARACTERISTIC
61
CHC
CHANCE
62
CHSPK
CHESAPEAKE
63
CIG
CEILING
64
CLD
CLOUD
65
CLR
CLEAR AT OR BELOW 12,000 FEET (AWOS/ASOS/METAR)
66
CLRS
CLEAR AND SMOOTH
67
CNCL
CANCEL
68
CNDN
CANADIAN
69
CNVTV
CONVECTIVE
70
CONFDC
CONFIDENCE
71
CONT
CONTINUE OR CONTINUOUSLY (GEN)
72
CONTDVD
CONTINENTAL DIVIDE
73
COR
CORRECTION TO THE OBSERVATION
74
CST
COAST
75
CTGY
CATEGORY
76
CTSKLS
CATSKILLS
77
CYC
CYCLONIC
78
CYCLGN
CYCLOGENESIS
79
DABRK
DAYBREAK
80
DCAVU
CLEAR/SCATTERED CLOUDS. VISIBILITY GREATER THAN 10, REMAINDER OF REPORT MISSING
81
DKTS
DAKOTAS
82
DMSH
DIMINISH
83
DNS
DENSE
84
DNSLP
DOWNSLOPE
85
DNSTRM
DOWNSTREAM
86
DPNG
DEEPENING
87
DPTH
DEPTH
88
DR
LOW DRIFTING (METAR)
89
DRFT
DRIFT
90
DRZL
DRIZZLE
91
DSIPT
DISSIPATE
92
DTLN
INTERNATIONAL DATE LINE
93
DTRT
DETERIORATE
94
DURC
DURING CLIMB (PIREP)
95
DURD
DURING DECENT (PIREP)
96
DVV
DOWNWARD VERTICAL VELOCITY
97
DWNDRTS
DOWNDRAFTS
98
DWPNT
DEWPOINT
99
E
-ENDING OF PRECIPITATION (IN MINUTE-METAR)
-EQUATORIAL (AIR MASS)
-ESTIMATED (WEATHER REPORTS ONLY)
-EASTERN STANDARD TIME (TIME GROUPS ONLY)
100
ELNGT
ELONGATE
101
EMBDD
EMBEDDED
102
EMSU
ENVIRONMENT METEOROLOGICAL SUPPORT UNIT
103
ENERN
EAST-NORTHEASTERN (WEATHER REPORTS ONLY)
104
ENEWD
EAST-NORTHEASTWARD (WEATHER REPORTS ONLY)
105
EOF
EXPECTED OPERATIONS FORECAST
106
ESERN
EAST-SOUTHEASTERN (WEATHER REPORTS ONLY)
107
ESEWD
EAST-SOUTHEASTWARD (WEATHER REPORTS ONLY)
108
EXTRAP
EXTRAPOLATE
109
EXTRM
EXTREME
110
FA
AREA FORECAST
111
FAH
FAHRENHEIT
112
FEW
1 OR 2 OCTAS (EIGHTHS) CLOUD COVERAGE
113
FIBI
FILED BUT IMPRACTICAL TO TRANSMIT
114
FILG
FILLING
115
FINO
WEATHER REPORT WILL NOT BE FILED FOR TRANSMISSION /FL ALTITUDE/FLIGHT LEVEL (PIREP)
116
FL
FLASH ADVISORY
117
FLDST
FLOOD STAGE
118
FLG
FALLING
119
FLWIS
FLOOD WARNING ISSUED
120
FM
FROM (4 DIGIT BEGINNING TIME IN HOURS AND MINUTES)
121
FNT
FRONT
122
FNTGNS
FRONTOGENESIS
123
FNTLYS
FRONTOLYSIS
124
FORNN
FORENOON
125
FRMG
FORMING
126
FROPA
FRONTAL PASSAGE
127
FROSFC
FRONTAL SURFACE
128
FRST
FROST
129
FRWF
FORECAST WIND FACTOR
130
FRZ
FREEZE
131
FRZLVL
FREEZING LEVEL
132
FRZN
FROZEN
133
FT
FEET (GEN)
134
FRQ
FREQUENT (ICAO)
135
FULYR
SMOKE LAYER ALOFT
136
FUOCTY
SMOKE OVER CITY
137
FWC
FLEET WEATHER CENTRAL
138
G
GUSTS REACHING (KNOTS) (WEATHER REPORTS ONLY)
139
GICG
GLAZE ICING
140
GLFALSKID
GULF OF ALASKA
141
GLFCAL
GULF OF CALIFORNIA
142
GLFMEX
GULF OF MEXICO
143
GNDFG
GROUND FOG
144
GRAD
GRADIENT
145
GRBNKS
GRAND BANKS
146
GRDL
GRADUAL
147
GRTLKS
GREAT LAKES
148
GSTS
GUSTS
149
GSTY
GUSTY
150
GV
GROUND VISIBILITY
151
HCVIS
HIGH CLOUDS VISIBLE
152
HDFRZ
HARD FREEZE
153
HDSVLY
HUDSON VALLEY
154
HI
HIGH
155
HIEAT
HIGHEST TEMPERATURE EQUALED FOR ALL TIME
156
HIEFM
HIGHEST TEMPERATURE EQUALED FOR THE MONTH
157
HIESE
HIGHEST TEMPERATURE EQUALED SO EARLY
158
HIFOR
HIGH LEVEL FORECAST
159
HITMP
HIGHEST TEMPERATURE
160
HIXAT
HIGHEST TEMPERATURE EXCEEDED FOR ALL TIME
161
HIXFM
HIGHEST TEMPERATURE EXCEEDED FOR THE MONTH
162
HIXSE
HIGHEST TEMPERATURE EXCEEDED SO EARLY
163
HIXSL
HIGHEST TEMPERATURE EXCEEDED SO LATE
164
HLSTO
HAILSTONES
165
HLTP
HILLTOP
166
HLYR
HAZE LAYER ALOFT
167
HRCN
HURRICANE
168
HUREP
HURRICANE REPORT
169
HX
HIGH INDEX
170
/IC
ICING (PIREP ONLY)
171
ICG
ICING
172
ICGIC
ICING IN CLOUDS
173
ICGICIP
ICING IN CLOUDS AND PRECIPITATION
174
ICGIP
ICING IN PRECIPITATION
175
IMC
INSTRUMENT METEOROLOGICAL CONDITIONS
176
IMDT
IMMEDIATE
177
INLD
INLAND
178
INSTBY
INSTABILITY
179
INTR
INTERIOR
180
INTS
INTENSE
181
INTSFY
INTENSIFY
182
INVRN
INVERSION
183
IOVC
IN OVERCAST
184
IR
ICE ON RUNWAY
185
ISOLD
ISOLATED (GENERAL)
186
JTSTR
JET STREAM
187
K
COLD (AIR MASS)
188
KFRST
KILLING FROST
189
KT
KNOTS (FOLLOWS WIND DIRECTION/SPEED - GENERAL)
190
LABRDR
LABRADOR
191
LCTMP
LITTLE CHANGE IN TEMPERATURE
192
LDG
LANDING
193
LFT
LIFT
194
LGRNG
LONG RANGE
195
LGT
LIGHT (PIREP)
196
LIFR
LOW IFR (WEATHER REPORTS ONLY)
197
LK
LAKE
198
LLWS
LOW LEVEL WIND SHEAR (PIREP)
199
LN
LINE (GENERAL)
200
LOEAT
LOWEST TEMPERATURE EQUALED FOR ALL TIME
201
LOEFM
LOWEST TEMPERATURE EQUALED FOR THE MONTH
202
LOESE
LOWEST TEMPERATURE EQUALED SO EARLY
203
LOESE
LOWEST TEMPERATURE EQUALED SO EARLY
204
LOESL
LOWEST TEMPERATURE EQUALED SO LATE
205
LOTMP
LOWEST TEMPERATURE
206
LOXAT
LOWEST TEMPERATURE EXCEEDED FOR ALL TIME
207
LOXFM
LOWEST TEMPERATURE EXCEEDED FOR THE MONTH
208
LOXSE
LOWEST TEMPERATURE EXCEEDED SO EARLY
209
LOXSL
LOWEST TEMPERATURE EXCEEDED SO LATE
210
LSR
LOOSE SNOW ON RUNWAY
211
LTG
LIGHTNING
212
LTGCA
LIGHTNING - CLOUD TO AIR
213
LTGCC
LIGHTNING - CLOUD TO CLOUD
214
LTGCCCG
LIGHTNING - CLOUD TO CLOUD, CLOUD TO GROUND
215
LTGCG
LIGHTNING CLOUD TO GROUND
216
LTGCW
LIGHTNING CLOUD TO WATER
217
LTGIC
LIGHTNING IN CLOUDS
218
LTLCG
LITTLE CHANGE
219
LTNG
LIGHTNING
220
LX
LOW INDEX
221
LYR
LAYER OR LAYERED OR LAYERS
222
M
-MARITIME (AIR MASS)
-IN TEMPERATURE FIELD MEANS "MINUS" OR BELOW ZERO (METAR)
-IN RVR LISTING INDICATES VISIBILITY LESS THAN LOWEST REPORTABLE SENSOR VALUE
-MISSING (WEATHER REPORTS ONLY)
-MOUNTAIN STANDARD TIME (TIME GROUPS ONLY)
223
MA
MAP ANALYSIS
224
MAN
MANITOBA
225
MEGG
MERGING
226
METAR
AVIATION ROUTINE WEATHER REPORT (ICAO)
227
MEX
MEXICO
228
MHKVLY
MOHAWK VALLEY
229
MI
SHALLOW (METAR)
230
MIDN
MIDNIGHT
231
MIFG
PATCHES OF SHALLOW FOG NOT DEEPER THAN TWO METERS (METAR)
232
MLTLVL
MELTING LEVEL
233
MMO
MAIN METEOROLOGICAL OFFICE
234
MNLD
MAINLAND
235
MOD
MODERATE (PIREP)
236
MOGR
MODERATE OR GREATER
237
MONTR
MONITOR
238
MOV
MOVE
239
MPS
METRES PER SECOND
240
MRGL
MARGINAL
241
MRNG
MORNING
242
MRTM
MARITIME
243
MS
MINUS
244
MSTLY
MOSTLY
245
MSTR
MOISTURE
246
MTN
MOUNTAIN
247
MVFR
MARGINAL VFR
248
MX
MIXED, ICING TYPE (PIREP)
249
MXD
MIXED
250
NB
NEW BRUNSWICK
251
NCWX
NO CHANGE IN WEATHER
252
NELY
NORTHEASTERLY (WEATHER REPORTS ONLY)
253
NERN
NORTHEASTERN
254
NEWENG
NEW ENGLAND
255
NFLD
NEWFOUNDLAND
256
NGT
NIGHT
257
NL
NO LAYERS
258
NMBR
NUMBER
259
NNERN
NORTH-NORTHEASTERN (WEATHER REPORTS ONLY)
260
NNEWD
NORTH-NORTHEASTWARD (WEATHER REPORTS ONLY)
261
NNWRN
NORTH-NORTHWESTERN (WEATHER REPORTS ONLY)
262
NNWWD
NORTHWESTWARD (WEATHER REPORTS ONLY)
263
NO
NOT AVAILABLE (E.G. SLPNO, RVRNO)
264
NORPI
NO PILOT BALLOON OBSERVATION WILL BE FILED. NEXT COLLECTION UNLESS WEATHER CHANGES SIGNIFICANTLY
265
NOSPL
NO SPECIAL OBSERVATIONS TAKEN (WEATHER REPORTS ONLY)
266
NPRS
NONPERSISTENT
267
NS
NOVA SCOTIA
268
NSCSWD
NO SMALL CRAFT OR STORM WARNING ARE BEING DISPLAYED
269
NSW
NO SIGNIFICANT WEATHER (TAF)
270
NVA
NEGATIVE VORTICITY ADVECTION
271
NWLY
NORTHWESTERLY (WEATHER REPORTS ONLY)
272
NWRN
NORTHWESTERN (WEATHER REPORTS ONLY)
273
OBS
OBSERVATION
274
OBSC
OBSCURE
275
OCFNT
OCCLUDED FRONT
276
OCLD
OCCLUDE
277
OCLN
OCCLUSION
278
OCNL
OCCASIONAL (GENERAL)
279
OFP
OCCASIONAL FRONTAL PASSAGE
280
OFSHR
OFF SHORE
281
OMTNS
OVER MOUNTAINS
282
ONSHR
ON SHORE
283
ONT
ONTARIO
284
ORGPHC
OROGRAPHIC
285
OSV
OCEAN STATION VESSEL
286
OTAS
ON TOP AND SMOOTH
287
OTLK
OUTLOOK
288
OTP
ON TOP (PIREP)
289
/OV
LOCATION (PIREP ONLY)
290
OVC
OVERCAST
291
P
- IN RVR INDICATES VISIBILITY GREATER THAN HIGHEST REPORTABLE SENSOR VALUE E.G. P6000FT)
- PACIFIC STANDARD TIME (TIME GROUP ONLY)
- POLAR (AIR MASS)
292
P6SM
VISIBILITY GREATER THAN 6 SM (TAF ONLY)
293
PAC
PACIFIC
294
PBL
PROBABLE
295
PCPN
PRECIPITATION
296
PDMT
PREDOMINANT
297
PDW
PRIORITY DELAYED WEATHER
298
PEN
PENINSULA
299
PGTSND
PUGET SOUND
300
PIBAL
PILOT BALLOON OBSERVATION
301
PISE
NO PILOT BALLOON OBSERVATION DUE TO UNFAVORABLE SEA CONDITIONS
302
PISO
NO PILOT BALLOON OBSERVATION DUE TO SNOW
303
PIWI
NO PILOT BALLOON OBSERVATION DUE TO HIGH, OR GUSTY, SURFACE WIND
304
PK WND
PEAK WIND
305
PLW
PLOW (SNOW)
306
PNHDL
PANHANDLE
307
PO
DUST DEVIL / SAND SWIRLS (METAR)
308
PPINA
RADAR WEATHER REPORTS NOT AVAILABLE
309
PPINE
RADAR WEATHER REPORT NO ECHOES OBSERVED
310
PPINO
RADAR WEATHER REPORT EQUIPMENT INOPERATIVE DUE TO BREAKDOWN
311
PPIOK
RADAR WEATHER REPORT EQUIPMENT OPERATION RESUMED
312
PPIOM
RADAR WEATHER REPORT EQUIPMENT INOPERATIVE DUE TO MAINTENANCE
313
PR
PARTIAL (METAR)
314
PRBLTY
PROBABILITY
315
PRESFR
PRESSURE FALLING RAPIDLY
316
PRESRR
PRESSURE RISING RAPIDLY
317
PRFG
FOG PARTIAL (METAR)
318
PRJMP
PRESSURE JUMP (WEATHER REPORTS ONLY)
319
PROB30
SLIGHT CHANCE, PROBABLILITY 30 PERCENT (TAF)
320
PROB40
PROBABILITY 40 PERCENT (TAF)
321
PROG
PROGNOSIS OR PROGNOSTIC
322
PRSNT
PRESENT
323
PS
PLUS
324
PSG
PASSAGE
325
PSG
PASSAGE / PASSING
326
PSR
PACKED SNOW ON RUNWAY
327
PTCHY
PATCHY
328
PTLY
PARTLY
329
PVA
POSITIVE VORTICITY ADVECTION
330
PWINO
PRECIPITATION IDENTIFIER INFORMATION NOT AVAILABLE (WEATHER REPORTS ONLY)
331
R
RUNWAY (USED IN RVR MEASUREMENT)
332
RABA
NO RAWIN OBSERVATION, NO BALLOONS AVAILABLE
333
RABAL
RADIOSONDE BALLOON WIND DATA
334
RABAR
RADIOSONDE BALLOON RELEASE
335
RACO
NO RAWIN OBSERVATION, COMMUNICATIONS OUT
336
RADAT
RADIOSONDE OBSERVATION DATA
337
RADNO
REPORT MISSING ACCOUNT RADIO FAILURE
338
RAFI
RADIOSONDE OBSERVATION NOT FILED
339
RAFRZ
RADIOSONDE OBSERVATION FREEZING LEVELS
340
RAHE
NO RAWIN OBSERVATION, NO GAS AVAILABLE
341
RAICG
RADIOSONDE OBSERVATION ICING AT
342
RAOB
RADIOSONDE OBSERVATION
343
RAPI
RADIOSONDE REPORT ALREADY SENT IN PIBAL COLLECTION
344
RAREP
RADAR WEATHER REPORT
345
RASN
RAIN AND SNOW (METAR)
346
RAVU
RADIOSONDE ANALYSIS AND VERIFICATION UNIT
347
RAWE
NO RAWIN OBSERVATION, UNFAVORABLE WEATHER
348
RAWI
NO RAWIN OBSERVATION, HIGH AND GUSTY WINDS
349
RAWIN
UPPER WINDS OBSERVATION (BY RADIO METHODS)
350
RCD
RADAR CLOUD DETECTION REPORT
351
RCDNA
RADAR CLOUD DETECTION REPORT NOT AVAILABLE
352
RCDNE
RADAR CLOUD DETECTION REPORT NOT AVAILABLE
353
RCDNO
RADAR CLOUD DECTECTOR INOPERATIVE DUE TO BREAKDOWN UNTIL
354
RCDOM
RADAR CLOUD DETECTOR INOPERATIVE DUE TO MAINTENANCE UNTIL
355
RCKY
ROCKY MOUNTAINS
356
RDG
RIDGE
357
RDWND
RADAR DOME WIND
358
RESTR
RESTRICT
359
RGD
RAGGED
360
RH
RELATIVE HUMIDITY
361
RHINO
RADAR ECHO HEIGHT INFORMATION NOT AVAILABLE/NOT OPERATING ON SCAN
362
RIOGD
RIO GRANDE
363
/RM
REMARKS (PIREP)
364
RMK
REMARK
365
RNFL
RAINFALL
366
ROBEPS
RADAR OPERATING BELOW PRESCRIBED STANDARD
367
RPD
RAPID
368
RSG
RISING
369
RUF
ROUGH
370
RY/RWY
RUNWAY
371
SA
SAND (METAR)
372
SASK
SASKATCHEWAN
373
SBSD
SUBSIDE
374
SCT
SCATTERED
375
SELS
SEVERE LOCAL STORMS
376
SELY
SOUTHEASTERLY (WEATHER REPORTS ONLY)
377
SERN
SOUTHEASTERN (WEATHER REPORTS ONLY)
378
SEV
SEVERE (ICAO)
379
SFERICS
ATMOSPHERICS
380
SGD
SOLAR-GEOPHYSICAL DATA
381
SHFT
SHIFT (WEATHER REPORTS ONLY)
382
SHLW
SHALLOW
383
SHRTLY
SHORTLY
384
SIERNEV
SIERRA NEVADA
385
SIR
SNOW AND ICE ON RUNWAY
386
/SK
SKY CONDITIONS (PIREP ONLY)
387
SKC
SKY CLEAR
388
SLD
SOLID
389
SLP
SEA LEVEL PRESSURE
390
SLR
SLUSH ON RUNWAY
391
SLT
SLEET
392
SM
STATUTE MILES
393
SMK
SMOKE
394
SMTH
SMOOTH
395
SNBNK
SNOWBANK
396
SNFLK
SNOWFLAKE
397
SNOINCR
SNOW DEPTH INCREASE IN PAST HOUR
398
SNW
SNOW
399
SNWFL
SNOWFALL
400
SP
STATION PRESSURE
401
SPECI
SPECIAL REPORT
402
SPKL
SPRINKLE
403
SPLNS
SOUTH PLAINS
404
SPRD
SPREAD
405
SQ
SQUALL (METAR)
406
SQAL
SQUALL
407
SQLN
SQUALL LINE
408
SSERN
SOUTH-SOUTHEASTERN (WEATHER REPORTS ONLY)
409
SSEWD
SOUTH-SOUTHEASTWARD (WEATHER REPORTS ONLY)
410
SSWRN
SOUTH-SOUTHWESTERN (WEATHER REPORTS ONLY)
411
SSWWD
SOUTH-SOUTHWESTWARD (WEATHER REPORTS ONLY)
412
STAGN
STAGNATION
413
STG
STRONG
414
STM
STORM
415
STNRY
STATIONARY
416
SWLG
SWELLING
417
SWLY
SOUTHWESTERLY (WEATHER REPORTS ONLY)
418
SWRN
SOUTHWESTERN (WEATHER REPORTS ONLY)
419
SX
STABILITY INDEX
420
SXN
SECTION
421
SYNOP
SYNOPTIC
422
SYNS
SYNOPSIS
423
T
- TRACE (WEATHER REPORTS ONLY)
- TROPICAL (AIR MASS)
424
/TA
AIR TEMPERATURE (PIREP)
425
TAF
AVIATION TERMINAL FORECAST
426
/TB
TURBULENCE (PIREPS ONLY)
427
TCU
TOWERING CUMULUS
428
TEMPO
TEMPORARY CHANGES EXPECTED
429
THD
THUNDERHEAD (NON METAR)
430
THDR
THUNDER (NON METAR)
431
THK
THICK
432
THN
THIN
433
TKOF
TAKEOFF
434
/TM
TIME (PIREP)
435
TOP
CLOUD TOP
436
TOVC
TOP OF OVERCAST
437
/TP
TYPE AIRCRAFT (PIREP ONLY)
438
TPG
TOPPING
439
TRIB
TRIBUTARY
440
TROF
TROUGH
441
TROP
TROPOPAUSE
442
TRPCD
TROPICAL CONTINENTAL (AIR MASS)
443
TRPCL
TROPICAL
444
TRPLYR
TRAPPING LAYER
445
TS
THUNDERSTORM
446
TSNO
THUNDERSTORM INFO NOT AVAILABLE
447
TSHWR
THUNDERSHOWER (NON METAR)
448
TSQLS
THUNDERSQUALLS (NON METAR)
449
TSTM
THUNDERSTORM (NON METAR)
450
TURBC
TURBULENCE
451
TURBT
TURBULENT
452
TWRG
TOWERING
453
UA
ROUTINE PIREP
454
UAG
UPPER ATMOSPHERE GEOPHYSICS
455
UDDF
UP AND DOWN DRAFTS
456
UNSBL
UNSEASONABLE
457
UNSTBL
UNSTABLE
458
UNSTDY
UNSTEADY
459
UNSTL
UNSETTLE
460
UP
UNKNOWN PRECIPITATION (AUTOMATED OBSERVATIONS)
461
UPDFTS
UPDRAFTS
462
UPR
UPPER
463
UPSLP
UPSLOPE
464
UPSTRM
UPSTREAM
465
UUA
URGENT PIREP
466
UVV
UPWARD VERTICAL VELOCITY
467
UWNDS
UPPER WINDS
468
V
- VARIES (WINDS DIRECTION AND RVR)
- VARIABLE (WEATHER REPORTS ONLY)
469
VA
VOLCANIC ASH (METAR)
470
VC
VICINITY
471
VCFG
FOG IN VICINITY (METAR)
472
VIS
VISIBILITY (GENERAL)
473
VLCTY
VELOCITY
474
VLNT
VIOLENT
475
VLY
VALLEY
476
VR
VEER
477
VRB
VARIABLE WIND DIRECTION WHEN SPEED IS LESS THAN OR EQUAL TO 6 KNOTS
478
VRISL
VANCOUVER ISLAND, BC
479
VSBY
VISIBILITY
480
VSBYDR
VISIBILITY DECREASING RAPIDLY
481
VSBYIR
VISIBILITY INCREASING RAPIDLY
482
VV
VERTICAL VISBILITY (INDEFINITE CEILING)
483
W
WARM (AIR MASS)
484
WA
AIRMET
485
WDC-1
WORLD DATA CENTERS IN WESTERN EUROPE
486
WDC-2
WORLD DATA CENTERS THROUGHOUT REST OF WORLD
487
WDLY
WIDELY
488
WDSPRD
WIDESPREAD
489
WEA
WEATHER
490
WFP
WARM FRONT PASSAGE
491
WINT
WINTER
492
WND
WIND
493
WNWRN
WEST-NORTHWESTERN (WEATHER REPORTS ONLY)
494
WNWWD
WEST-NORTHWESTWARD (WEATHER REPORTS ONLY)
495
WPLTO
WESTERN PLATEAU
496
WR
WET RUNWAY
497
WRM
WARM
498
WRMFNT
WARM FRONT
499
WRNG
WARNING
500
WS
WIND SHEAR (IN TAFs, LOW LEVEL AND NOT ASSOCIATED WITH CONVECTIVE ACTIVITY)
501
WSHFT
WIND SHIFT
502
WSOM
WEATHER SERVICE OPERATIONS MANUAL
503
WSR
WET SNOW ON RUNWAY
504
WSTCH
WATCH RANGE
505
WSWRN
WEST-SOUTHWESTERN (WEATHER REPORTS ONLY)
506
WSWWD
WEST-SOUTHWESTWARD (WEATHER REPORTS ONLY)
507
WTR
WATER
508
WTSPT
WATERSPOUT
509
WV
WAVE
510
/WV
WIND AT ALTITUDE ONLY (PIREP ONLY)
511
WW
SEVERE WEATHER FORECAST
512
/WX
FLIGHT VISIBILITY AND FLIGHT WEATHER (PIREP)
513
WXCON
WEATHER RECONNAISSANCE FLIGHT PILOT REPORT
514
XCP or XPC
EXCEPT
515
Y
YUKON STANDARD TIME (TIME GROUPS ONLY)
516
YKN
YUKON
517
YLSTN
YELLOWSTONE
518
Z
ZULU TIME
APPENDED DATE-TIME GROUPE INDICATES UTC (METAR/TAF)
519
ZI
- ZONAL INDEX
-ZONE OF INTERIOR
520
NOTAM
NOTICE TO AIRMEN
521
RVR
RUNWAY VISUAL RANGE
522
Are heights displayed as agl or asl in METAR/TAF?
Above ground level
523
What are the required meteorological documents to be familiar with before starting a flight?
Flight weather documentation should include, as appropriate:
the relevant GFAs, AIRMETs, SIGMETs, TAFs, METARs, SPECIs,
PIREPs, and upper wind and temperature forecasts.
