Tracking Late Season Winter Storms; Unusual Early-Season Heat Wave in the Southwest

Heavy snow and high winds continue in the Great Lakes and Northeast. A moderate atmospheric river will continue to bring heavy precipitation to the Pacific Northwest and northern Rockies. A major winter storm will develop across the northern High Plains tonight into Saturday and rapidly strengthen as it moves into the Great Lakes on Sunday. Above-average temperatures expected in the Southwest. Read More >

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Last Map Update: Fri, Mar 13, 2026 at 12:44:18 pm PDT

Watches, Warnings & Advisories

National Weather Service Seattle/Tacoma, WA

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Winter Storm Warning

Avalanche Warning

Flood Warning

Winter Weather Advisory

Flood Watch

Hydrologic Outlook

Additional Snow

Heavy Mountain Snow Through Friday

Rising Rivers Friday through Sunday

Avalanche Warning

Additional wet snow will fall in many of the lowlands today. Heavy snow will continue to impact travel over Stevens and Lookout Passes.

Heavy snow showers will impact mountain passes tonight into Saturday morning. Stevens Pass could see near an additional foot of snow, Snoqualmie Pass could see an additional foot of snow, and Lookout Pass could see an additional foot of snow. Please avoid travel if possible. If travel is necessary, keep an emergency supply kit in the vehicle.

A few rivers in the Palouse and one in the east Slopes of the Cascades will experience bankfull or minor flooding conditions Friday, March 13 through Sunday, March 15. These rivers are: Stehekin River, Paradise Creek, and Palouse River. Impacts include minor flooding and swift currents. Please take precautions and follow all road signs regarding any flooded roads.

Avalanche Warning through 7 AM PDT Saturday, March 14th, 2026. New snow has formed dangerous slabs of snow and will likely cause a widespread cycle of natural avalanches large enough to bury, injure, or kill a person. It will be very easy for backcountry travelers to trigger them during this period. Travel in avalanche terrain is not recommended during this period. More info at: https://www.idahopanhandleavalanche.org/ or https://avalanche.org/