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Explanation of
Forecast Elements
Terminal Forecast Guidance |
| Hour - UTC |
Forecast time in UTC |
| CIG<5KFT |
Ceiling height in 100s of feet, if below 5,000 ft |
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Values range from 0 to 050 |
| VIS |
Visibility in Miles |
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Values range from 0 to 7 miles |
| SKY |
Sky cover |
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CL = Clear
FW = Few Clouds
SC = Scattered Clouds
BK = Broken Clouds
OV = Overcast Clouds |
| PCCT |
Probable Convective Cloud Top (100s feet) |
| PTSTM |
Probability of Thunderstorms (%) |
| WX |
Weather from the TAF |
| WX2 |
Secondary Weather from GFE database. |
| POP |
Probability of Precipitation. Values given as percentage. |
| FLTCAT |
Forecast Flight Category. |
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L = LIFR
I = IFR
M = MVFR
V = VFR |
| CONF |
Forecast confidence based on model output |
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H = High confidence
M = Medium confidence
L = Low confidence
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| FLTCAT2 |
Secondary Flight Category b |
| TEMP |
Temperature (F) |
| DEWP |
Dewpoint (F) |
| WINDDIR |
Wind Direction (deg) |
| WNDSPD |
Wind Speed (kts.) |
| WNDGST |
Wind Gusts (kts.) |
| RY-Pair |
Favored Runway/crosswind (kts.)/tailwind (kts) |
| PLLWS |
Probability of Low Level Wind Shear |
| PICE050 |
Probability of icing at 5,000 feet |
| PICE030 |
Probability of icing at 3,000 feet |
| PICE010 |
Probability of icing at 1,000 feet |
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V-Route Forecast Guidance |
| Hour-UTC |
Forecast time in UTC |
| PICE180 |
Icing risk at 18,000 feet (None, Low, Medium, High) |
| PICE150 |
Icing risk at 15,000 feet (None, Low, Medium, High) |
| PICE130 |
Icing risk at 13,000 feet (None, Low, Medium, High) |
| PICE110 |
Icing risk at 11,000 feet (None, Low, Medium, High) |
| PICE090 |
Icing risk at 9,000 feet (None, Low, Medium, High) |
| PICE070 |
Icing risk at 7,000 feet (None, Low, Medium, High) |
| PICE050 |
Icing risk at 5,000 feet (None, Low, Medium, High) |
| PICE030 |
Icing risk at 3,000 feet (None, Low, Medium, High) |
| PICE010 |
Icing risk at 1,000 feet (None ,Low, Medium, High) |
| FL180 |
Winds at 18,000 feet (dir./kts.) |
| FL150 |
Winds at 15,000 feet (dir./kts.) |
| FL130 |
Winds at 13,000 feet (dir./kts.) |
| FL110 |
Winds at 11,000 feet (dir./kts.) |
| FL090 |
Winds at 9,000 feet (dir./kts.) |
| FL070 |
Winds at 7,000 feet (dir./kts.) |
| FL050 |
Winds at 5,000 feet (dir./kts.) |
| FL030 |
Winds at 3,000 feet (dir./kts.) |
| FL010 |
Winds at 1,000 feet (dir./kts.) |
| PCCT |
Probable Convective Cloud Top (100s feet) |
| PTSTM |
Probability of Thunderstorms (%) |
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J-Route Forecast Guidance |
| Hour-UTC |
Forecast time in UTC |
| PTURB420 |
Risk of turbulence at 42,000 feet (None, Low, Medium, High),
based on Richardson Number |
| PTURB390 |
Risk of turbulence at 39,000 feet (None, Low, Medium, High),
based on Richardson Number |
| PTURB360 |
Risk of turbulence at 36,000 feet (None, Low, Medium, High),
based on Richardson Number |
| PTURB330 |
Risk of turbulence at 33,000 feet (None, Low, Medium, High),
based on Richardson Number |
| PTURB300 |
Risk of turbulence at 30,000 feet (None, Low, Medium, High),
based on Richardson Number |
| PTURB270 |
Risk of turbulence at 27,000 feet (None, Low, Medium, High),
based on Richardson Number |
| PTURB240 |
Risk of turbulence at 24,000 feet (None, Low, Medium, High),
based on Richardson Number |
| PTURB210 |
Risk of turbulence at 21,000 feet (None, Low, Medium, High),
based on Richardson Number |
| PTURB180 |
Risk of turbulence at 18,000 feet (None, Low, Medium, High),
based on Richardson Number |
| FL420 |
Winds at 42,000 feet (dir./kts.) |
| FL390 |
Winds at 39,000 feet (dir./kts.) |
| FL360 |
Winds at 36,000 feet (dir./kts.) |
| FL330 |
Winds at 33,000 feet (dir./kts.) |
| FL300 |
Winds at 30,000 feet (dir./kts.) |
| FL270 |
Winds at 27,000 feet (dir./kts.) |
| FL240 |
Winds at 24,000 feet (dir./kts.) |
| FL210 |
Winds at 21,000 feet (dir./kts.) |
| FL180 |
Winds at 18,000 feet (dir./kts.) |
| PCCT |
Probable Convective Cloud Top (100s feet) |
| PTSTM |
Probability of Thunderstorms (%) |
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