GFSp25: 2025 September 21

Note: The sign convention for the fluxes is positive upward, negative downward.

Variable	00Z Issue							06Z Issue							12Z Issue							18Z Issue
	Nowcast – Sep 21 00Z	1-hour forecast – Sep 21 01Z	2-hour forecast – Sep 21 02Z	3-hour forecast – Sep 21 03Z	4-hour forecast – Sep 21 04Z	5-hour forecast – Sep 21 05Z	6-hour forecast – Sep 21 06Z	Nowcast – Sep 21 06Z	1-hour forecast – Sep 21 07Z	2-hour forecast – Sep 21 08Z	3-hour forecast – Sep 21 09Z	4-hour forecast – Sep 21 10Z	5-hour forecast – Sep 21 11Z	6-hour forecast – Sep 21 12Z	Nowcast – Sep 21 12Z	1-hour forecast – Sep 21 13Z	2-hour forecast – Sep 21 14Z	3-hour forecast – Sep 21 15Z	4-hour forecast – Sep 21 16Z	5-hour forecast – Sep 21 17Z	6-hour forecast – Sep 21 18Z	Nowcast – Sep 21 18Z	1-hour forecast – Sep 21 19Z	2-hour forecast – Sep 21 20Z	3-hour forecast – Sep 21 21Z	4-hour forecast – Sep 21 22Z	5-hour forecast – Sep 21 23Z	6-hour forecast – Sep 22 00Z
Zonal wind velocity (m/s) 10 m above ground
Meridional wind velocity (m/s) 10 m above ground
Net Latent Heat Flux (W/m2) Surface
Net Sensible Heat Flux (W/m2) Surface
Total Precipitation (kg/m2) Accumulated over past hour
Temperature (K) 2 m above ground
Pressure (Pa) Mean Sea Level
Relative Humidity (%) 2 m above ground
Total Cloud Cover (%) over the entire atmosphere