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Dangerous Heat Expands; Heavy Rainfall Threats; Fire Weather Concerns for the West

The heat will increase and expand across the Central Plains, Mississippi Valley, Southeast and into the Eastern U.S. through the week as high pressure builds across the eastern two-thirds of the country. On the northern periphery of this heat, the threat for severe thunderstorms and heavy rainfall across the northern Plains and upper Midwest through Tuesday. Critical Fire Weather for the west. Read More >

1200 UTC NAM 250 mb Heights, Isotachs, and Wind (kts)

Forecasts are based on the daily 1200 UTC NAM run and are updated daily by 1400 UTC.  Additional models runs can be found here