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NWS Advisories Warn of Heavy Mountain Snow in North Washington Cascades Through Friday Morning

Travelers are urged to delay Highway 20 trips with peak one‑inch‑per‑hour snowfall expected Thursday evening.

Stock image/File photo: SPOKANE, WA - FEBRUARY 1, 2008: County road crews clear streets in Washington.
SEATTLE, WA - FEBRUARY 13: A jogger makes their way across a snowy street in Seattle, Washington

Overview

  • Winter weather advisories cover the Cascades of Whatcom, Skagit, and western Okanogan counties from Wednesday through 10:00 a.m. PST Friday.
  • NWS Seattle forecasts 6 to 12 inches along the Cascade crest and at the highest elevations of Highway 20.
  • NWS Spokane projects additional 2 to 6 inches Wednesday in western Okanogan above 4,000 feet, followed by 7 to 15 inches through Friday morning near Washington Pass.
  • Forecasters expect the heaviest rates Thursday evening, reaching about 1 inch per hour with reduced visibility and snow-covered roads.
  • Officials warn travel could be very difficult to impossible at times on Highway 20 and advise checking NWS and WSDOT updates, delaying nonessential trips, and carrying winter emergency kits.