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ETA and
GFS Map Type |
short-term
forecasts (hrs) |
medium-range
forecasts (days) |
|
250mb
heights and wind speed,
shows forecast jet-stream configuration
|
12,24,36,48 |
0,1,2,3 |
4,5,6,7 |
|
500mb
heights and absolute vorticity,
shows forecast storm-track and weather-system
conrols
|
12,24,36,48 |
0,1,2,3 |
4,5,6,7 |
|
700mb
heights and vertical velocity,
shows forecast trajectories of airmasses and precip
controls
|
12,24,36,48 |
0,1,2,3 |
4,5,6,7 |
850-500mb relative humidity and 700mb heights
shows midtropospheric moisture and flow |
12,24,36,48 |
0,1,2,3 |
4,5,6,7 |
|
850mb
heights and temperature,
shows forecast near-surface airflow and airmass
temperature
|
12,24,36,48 |
0,1,2,3 |
4,5,6,7 |
|
Mean
sea-level pressure and 1000-500mb thickness,
shows forecast surface conditions (winds and
temperature)
|
12,24,36,48 |
0,1,2,3 |
4,5,6,7 |
|
Forecast
accumulated precipitation,
shows expected precipitation amounts
|
12,24,36,48 |
1,2,3 |
4,5,6,7 |
|
ETA and
GFS Map Type |
short-term
forecasts (hrs) |
medium-range
forecasts (days) |
|
300mb
heights and wind speed,
shows forecast jet-stream configuration
|
12,24,36,48 |
2 to 10 |
|
500mb
heights, winds, and absolute vorticity,
shows forecast storm-track and weather-system
conrols
|
12,24,36,48 |
2 to 10 |
|
700mb
heights, vertical velocity, and winds
shows forecast trajectories of airmasses and precip
controls
|
12,24,36,48 |
2 to 10 |
|
850-500mb integrated relative humidity and lifted index
shows shows potential for severe weather
|
12,24,36,48 |
2
to 10 |
|
850mb temperature, heights, and winds
shows forecast near-surface airflow and airmass
temperature |
12,24,36,48 |
2 to 10 |
|
Forecast 2m air temperature, dew point, and winds,
shows expected surface conditions
|
12,24,36,48 |
2 to 10 |
|
Forecast accumulated precipitation and surface pressure,
shows expected precipitation amounts
|
12,24,36,48 |
2 to 10 |
|
GFS Map Type |
medium-range
forecasts (hours) |
|
300mb
heights and wind speed,
shows forecast jet-stream configuration
|
0 to 180 |
|
500mb
heights, winds, and absolute vorticity,
shows forecast storm-track and weather-system
conrols
|
0 to 180 |
|
700mb
heights, vertical velocity, and winds
shows forecast trajectories of airmasses and precip
controls
|
0 to 180 |
|
850-500mb integrated relative humidity and lifted index
shows shows potential for severe weather
|
0 to 180 |
|
850mb temperature, heights, and winds
shows forecast near-surface airflow and airmass
temperature |
0 to 180 |
|
Forecast accumulated precipitation and surface pressure,
shows expected precipitation amounts
|
0 to 180 |
|