Heavy Rain and Flash Flooding in the West; Heat Expands in the Central U.S.

Monsoonal moisture will produce showers and thunderstorms with heavy rain over parts of the Southwest, Great Basin, and Central Rockies through Monday. Flash flooding is possible, especially in and around burn scars and in areas of steep terrain. Heat will persist across the Central U.S. early this week, spreading into the Ohio Valley and Mid-Atlantic later this week. Read More >

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Last Map Update: Sun, Aug 30, 2026 at 10:54:33 pm PDT

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National Weather Service San Francisco Bay Area, CA

Red Flag Warning

Small Craft Advisory

Fire Weather Watch

Rain Wednesday & Thursday

A cold frontal system is likely to arrive to NW California mid next week. There is still a lot of uncertainty on how far south this system will reach and how much rain will fall. Here is a look at a range of outcomes for the area. Even the low end amounts have a quarter to just under an inch of rain for the Humboldt and Del Norte Coasts, but areas south and east remain much drier. The high end amounts show at least a quarter inch of rain over all of NW California and 1-2 inches for most of Humboldt and Del Norte! Confidence will grow over the coming days.