Level
Weather Symbols
TAF Station Plot
Weather Symbols
FltCat
LIFRIFRMVFRVFR
PIREP
TurbIceOther
||
NILLGTMODSEVLLWSNILLGTMODSEV
Radar (dBZ)
5152535455565
Radar Echo Tops (kft)
5152535455565
Lightning (event density per 5 min)
No Coverage over Alaska
10203040506070
Wind Speed (kt)
1020304080120160
Wind Barbs
Calm15kt60kt25G30kt
Sky Coverage <FL180
FEWSCTBKNOVC
Cloud Tops 100s Ft MSL
060120180300420
Cloud Bases 100s Ft MSL
060120180
Sky Cover <FL180
SKCFEWSCTBKNOVC
FLT CAT
LIFRIFRMVFR
Weather Symbols
CIG (ft AGL)
10030050070010002000
Weather Symbols
VIS (SM)
0.250.51234
Weather Symbols
Density Alt Dev (ft)
5001000150020002500300035004000
Weather Symbols
Precip Type
RainSnowMixIceTS
Chance
LikelySevere
Weather Symbols
Wx Type
HazeFogSmokeDust/Sand
Thunderstorm
ISOLSCTNUM
Weather Symbols
TCF
CoverageLines
Sparse
25-39%
Medium
40-74%
Solid
75-100%
SPC Convective Outlook
TSTMMRGLSLGTENHMDTHIGH
SPC Product Description
Winter Weather
SnowMixIce
Chance
Likely
Weather Symbols
Icing Severity
TraceLightModHeavy
Icing Probability (percent)
515253545556575
Freezing Level (MSL x100ft)
010030050070090110130150170
GTG (Eddy Dissipation Rate)
L
 MOD
  SEV
EHeavy
   LGT
MOD
  SEV
   EXTRM
Medium
L
 MOD
  SEV
   EXTRM
Light
1020406080100
(m2/s3)1/3
LLWS (/s)
0.06.12.18.24.3
SIGMETS
Conv-
ective
Thunder
Storm
Trop
Cyclone
Blowing
Dust/Sand
Volcanic
Ash

Turb

Icing
G-AIRMET/AIRMETS
SFC
Wind

LLWS
Turb
High
Turb
Low
FRZ
LVL

Icing
MTN
OBSCN
CIG/VIS
(IFR)
NWS Warnings

Tornado
Severe
TS
Winter
Storm

Blizzard
Ice
Storm
Lake
Effect
Snow

Storm

Gale
High
Wind