Strong Storm System Brings Heavy Mountain Snow to the Sierra Nevada and Critical Fire Weather Conditions to the Plains

A Pacific storm system will continue to bring low elevation rain and mountain snow to much of the West through Wednesday, with heavy mountain snow expected in the higher elevations of the Sierra Nevada. This system will also bring strong winds to the Intermountain West, Rockies, and Plains, which will create Critical fire weather conditions for the High Plains. Read More >

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Last Map Update: Tue, Apr 21, 2026 at 10:14:13 pm PDT

Watches, Warnings & Advisories

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Winter Storm Warning

Small Craft Advisory

Wind Advisory

Week of April 20th Forecast

Rain and Thunderstorms Tuesday

A low pressure system passing over California will bring some minor impacts to the forecast area. Light rain showers are forecast through the middle of the week. Area peaks and ridgelines will see some mountain snowfall, as snow levels generally stay above 5000 feet. Afternoon and evening thunderstorms are possible on Tuesday and Wednesday. Gusty winds in the Shasta Valley and east side terrain will weaken Monday evening, then return to the east side terrain on Wednesday. Warm and dry conditions may end the week and continue into the weekend.