National Weather Service United States Department of Commerce

Thunderstorms and Heavy Rainfall in the Southeast, Montana, and Iowa; Lowell Begins to Impact Hawaii

Strong thunderstorms with damaging winds and heavy rain are expected across portions of the Southeast. Thunderstorms may produce large hail across portions of Montana. Heavy rainfall could produce flash flooding across Iowa and vulnerable areas in Utah. Lowell will bring heavy rain, dangerous swells and rip currents to portions of Hawaii. Sweltering heat persists across the South-Central US. Read More >

Last Updated: —

These risk levels are set each morning by 6 AM MST and will not be updated for ongoing weather. Remember: any thunderstorm can cause flash flooding, even on low-risk days.

Flood Risk by Burn Scar

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Flash Flood Risk Legend
None
Minor
Moderate
Major
Extreme