Hawaii and Guam Concerns; Record Warmth Spreads Eastward; Heavy Snow for Sierra-Nevada; Severe Weather for the Plains

A very active spring pattern with tropical concerns across the Pacific. Heavy rainfall will continue to impact Hawaii this weekend. Meanwhile we continue to monitor a developing typhoon that may affect Guam into early next week. For the Lower 48, heavy snow for mountains of California this weekend, increase threat for severe thunderstorms next week for the Plains and record warmth spreads east. Read More >

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Last Map Update: Sat, Apr 11, 2026 at 4:40:27 am PDT

Watches, Warnings & Advisories

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National Weather Service San Francisco Bay Area, CA

National Weather Service San Joaquin Valley, CA

Winter Storm Warning

Winter Weather Advisory

Flood Advisory

Small Craft Advisory

Winter Weather This Weekend

We have issued a Winter Weather Advisory and Winter Storm Warning for the Sierra from Lassen County down through Mono County. Up to 3 feet of snow is expected in the highest elevations.