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 >

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Last Map Update: Sun, Sep 6, 2026 at 1:28:23 pm PDT

Watches, Warnings & Advisories

National Weather Service Salt Lake City, UT

National Weather Service San Joaquin Valley, CA

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National Weather Service NWS Flagstaff, AZ

National Weather Service Los Angeles, CA

Red Flag Warning

Coastal Flood Advisory

High Surf Advisory

Lake Wind Advisory

Flood Watch

Child Abduction Emergency

Rainy Sunday

Summer Review

A line of showers with a chance of embedded thunderstorms will form this morning and will sit over the region (generally along Interstate 15) through much of the day. Greatest forecast rainfall totals exist over the mountains. Expect flowing water in flood channels.

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

NWS Forecast Office Las Vegas, NV