NAM 12km: 2025 September 04

Note: Four 84-hour forecasts are issued each day, but only the first 6 hours of each forecast are shown here. The sign convention for the fluxes is positive upward, negative downward, except for the shortwave radiation (solar radiation) flux, which has the opposite sign convention.

Variable	00Z Issue							06Z Issue							12Z Issue							18Z Issue
	Nowcast – 04 Sep 00Z	1-hour forecast – 04 Sep 01Z	2-hour forecast – 04 Sep 02Z	3-hour forecast – 04 Sep 03Z	4-hour forecast – 04 Sep 04Z	5-hour forecast – 04 Sep 05Z	6-hour forecast – 04 Sep 06Z	Nowcast – 04 Sep 06Z	1-hour forecast – 04 Sep 07Z	2-hour forecast – 04 Sep 08Z	3-hour forecast – 04 Sep 09Z	4-hour forecast – 04 Sep 10Z	5-hour forecast – 04 Sep 11Z	6-hour forecast – 04 Sep 12Z	Nowcast – 04 Sep 12Z	1-hour forecast – 04 Sep 13Z	2-hour forecast – 04 Sep 14Z	3-hour forecast – 04 Sep 15Z	4-hour forecast – 04 Sep 16Z	5-hour forecast – 04 Sep 17Z	6-hour forecast – 04 Sep 18Z	Nowcast – 04 Sep 18Z	1-hour forecast – 04 Sep 19Z	2-hour forecast – 04 Sep 20Z	3-hour forecast – 04 Sep 21Z	4-hour forecast – 04 Sep 22Z	5-hour forecast – 04 Sep 23Z	6-hour forecast – 05 Sep 00Z
Zonal Wind Velocity (m/s) 10 m above ground
Meridional Wind Velocity (m/s) 10 m above ground
Downward Shortwave Radiation Flux (W/m2) Surface
Upward Longwave Radiation Flux (W/m2) Surface
Net Latent Heat Flux (W/m2) Surface
Net Sensible Heat Flux (W/m2) Surface
Total Precipitation (kg/m2) 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