Hawaii and Guam Concerns; Severe Weather for the Plains; Heavy Snow for Sierra-Nevada

Heavy rainfall capable of causing flash flooding will continue to impact Hawaii through Monday. Severe thunderstorms and heavy rain are possible in parts of Texas and the southern Plains and the Upper Great Lakes. Heavy mountain snow continues in California's Sierra Nevada and rain with gusty winds to lower elevations. Super Typhoon Sinlaku will impact the Marianas through midweek. Read More >

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Last Map Update: Wed, Apr 15, 2026 at 4:00:18 am MDT

Watches, Warnings & Advisories

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National Weather Service Great Falls, MT

Winter Storm Warning

High Wind Warning

Winter Weather Advisory

Wind Advisory

Winter Storm Watch

Freeze Watch

Hazardous Weather Outlook

Wintry Weather Wednesday-Friday Morning

A cold front and associated trough of low pressure will move through the area Wednesday through Friday morning. This feature will bring widespread precipitation, colder temperatures and gusty winds. Snow levels will drop down to 1000-2000 feet by Thursday morning. Most valleys should experience some light snow. While the mountain passes receive 4 to 10 inches of new snow causing moderate travel impacts. Watch for snow squall potential in Southwest Montana on Wednesday evening.