Dangerous Heat and Heavy Rainfall into the Weekend

Hot temperatures and high humidity are forecast to continue across the mid-Mississippi Valley into this weekend. Heat Advisories remain in effect. Heavy to excessive rainfall occurring at times through the weekend could bring areas of flooding to parts of the northern Rockies, upper Midwest, central Great Lakes, and southern New England. Read More >

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Last Map Update: Fri, Sep 18, 2026 at 2:22:53 pm MDT

Watches, Warnings & Advisories

National Weather Service Great Falls, MT

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National Weather Service Western and Central Wyoming

National Weather Service Salt Lake City, UT

National Weather Service Grand Junction, CO

Severe Thunderstorm Warning

Flash Flood Warning

Severe Weather Statement

Flash Flood Watch

Flood Advisory

Flood Watch

Hydrologic Outlook

Another round of storms

Flash Flood Watch

Occasional showers and thunderstorms are expected today. The strongest storms will be this afternoon and evening. Gusty outflow winds, large hail, heavy downpours, and frequent lightning are possible.

Showers and thunderstorms will continue to impact the area through late this evening. With abundant moisture in place, storms will be capable of producing heavy rain in a short duration. This combined with already saturated soils in some areas from yesterday's storms will increase the threat of flash flooding. Burn scars and urban areas will be particularly susceptible to flooding.

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Dangerous Heat and Heavy Rainfall into the Weekend

NWS Forecast Office Pocatello, ID