Level
Level
MSL
Weather Symbols
TAF Station Plot
Weather Symbols
Flight Cat
LIFRIFRMVFRVFR
non-ceiling clouds below 3000 ft
All Symbols
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 Top (MSL x100 ft)
060120180300420
Cloud Base (MSL x100 ft)
060120180
Sky Cover <FL180
SKCFEWSCTBKNOVC
Flight Cat
LIFRIFRMVFR
Ceiling (ft AGL)
10030050070010002000
Weather Symbols
Visibility (SM)
0.250.51234
Weather Symbols
Density Alt Dev (ft)
5001000150020002500300035004000
Weather Symbols
Precipitation
RainSnowMixIceTS
Chance
LikelySevere
Weather Symbols
Weather
HazeSmokeFogDust/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 Severity with SLD
TraceLightModHeavySLD
Icing Probability (%)
515253545556575
Freezing Level (MSL x100ft)
010030050070090110130150170
Temperature
C-70-65-60-55-50-45-40-35-30-25-20-15-10-505101520253035
F-94-85-76-67-58-49-40-31-22-13-4514233241505968778695
GTG (Eddy Dissipation Rate)
L
 MOD
  SEV
EHeavy
   LGT
MOD
  SEV
   EXTRM
Medium
L
 MOD
  SEV
   EXTRM
Light
1020406080100
(m2/s3)1/3 × 100
LLWS (/s)
0.06.12.18.24.3
Terrain
Below Surface
SIGMET
Conv-
ective
Thunder
storm
Trop
Cyclone
Blowing
Dust/Sand
Volcanic
Ash

Turb

Icing
G-AIRMET/AIRMET
Sfc
Wind

LLWS
Turb
High
Turb
Low
Frz
Lvl

Icing
Mtn
Obsc
Cig/Vis
(IFR)
NWS Warnings

Tornado
Severe
TS
Winter
Storm

Blizzard
Ice
Storm
Lake
Effect
Snow

Storm

Gale
High
Wind