Tropical Moisture Brings Heavy Rain to Southwest; Strong Coastal Low to Impact the East Coast

Deep tropical moisture surging into the Southwest U.S. will lead to widespread showers and thunderstorms capable of producing flash flooding the next several days. A strong coastal low will develop late Friday and is expected to bring flooding, high surf, dangerous rip currents, gusty winds and heavy rain to much of the U.S. East Coast through early next week. Read More >

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Last Map Update: Thu, Oct 9, 2025 at 6:42:25 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

Flash Flood Warning

Flood Advisory

Small Craft Advisory

Lake Wind Advisory

Wind Advisory

Flood Watch

Marine Weather Statement

Flash Flood Watch

Chances of Precipitation

UPDATE! The Spring Mountains have been added to the Flash Flood Watch, which is now in effect through late Saturday evening. Showers and thunderstorms have already started developing across the area, and will increase in coverage, becoming widespread by this evening and tonight. Plan ahead now, and remember – if you encounter a flooded roadway, turn around, don’t drown!

Tropical Moisture Brings Heavy Rain to Southwest; Strong Coastal Low to Impact the East Coast

NWS Forecast Office Las Vegas, NV