Portland Snow Potential: Winter Weather Advisory for Foothills & Cascades Through Thursday

Winter Weather Advisory Extended for Oregon, Snow Possible in Portland

Portland, Ore. – KATU’s Storm Tracker 2 Weather Alert has been extended through Thursday as the region prepares for a mix of winter conditions, including potential snow in the foothills and Cascade Mountains and a chance of flurries even within the city of Portland.

While significant accumulation is unlikely in Portland itself, forecasters say snow levels are expected to fluctuate between 500 and 1,000 feet in the Willamette Valley over the next few days. These levels are predicted to remain above 1,000 feet during the afternoons.

The National Weather Service has issued a Winter Weather Advisory for areas above 1,000 feet, anticipating more substantial snowfall at higher elevations. A separate advisory was issued Sunday morning, valid from Monday 4 a.m. Until Thursday 4 a.m. For the Willapa Hills and South Cascades, according to the Olympian.

For Portland, situated near sea level, the chance of accumulating snow is low. However, a heavy shower could potentially bring snow down to the valley floor, though it’s not expected to stick for long. Elevations above 500 feet could see a dusting of snow, but temperatures are currently above freezing, meaning any accumulation will likely melt quickly.

Further east, conditions are expected to be more severe. The National Weather Service predicts total snow accumulations of 10 to 15 inches, with up to 2 feet possible above 5,000 feet. Winds could gust as high as 35 mph in exposed areas, creating hazardous travel conditions. The heaviest snow is anticipated Monday night into early Tuesday morning.

Officials are urging caution for those planning to travel, particularly in the mountainous regions. The weather service warns that travel may be “very difficult to impossible” and could impact both Tuesday morning and evening commutes. Drivers are advised to slow down and be prepared for icy patches on the roads.

The National Weather Service also reminds residents to be aware of the potential for ice accumulation on power lines and tree branches, which could lead to outages. If downed power lines are spotted, authorities advise against touching them and to immediately dial 911.

Meteorologist Sarah Bagby will provide the latest updates on the forecast tonight on KATU News at 5, 6, and 11 p.m. Residents are encouraged to download the Storm Tracker 2 Weather App for real-time information and alerts.

Beyond the immediate winter weather concerns, forecasters are also monitoring the potential for flooding later in the week, though details remain uncertain at this time.