Heavy Snowfall Creates Hazardous Conditions on Stevens and Snoqualmie Pass as Travel Restrictions Tighten Across Washington Mountains
SEATTLE, WASHINGTON — Heavy snowfall continues to blanket Washington’s mountain passes, leading to dangerous travel conditions and new restrictions for drivers crossing Stevens Pass (US 2) and Snoqualmie Pass (I-90) Tuesday evening.
According to the Washington State Department of Transportation (WSDOT), both routes are seeing rapidly accumulating snow, slick pavement, and limited visibility as plows work to keep lanes open.
Travel Restrictions in Effect
At Stevens Pass, traction tires are required, and chains are mandatory for vehicles exceeding 10,000 pounds gross vehicle weight. Oversized vehicles are prohibited until conditions improve.
At Snoqualmie Pass, officials have issued a traction tire advisory and also banned oversized vehicles due to heavy snow accumulation and freezing rain at higher elevations.
WSDOT cameras at both summits show steady snowfall and slow-moving traffic, with headlights barely visible through the dense flurries.
“Drivers need to be prepared for winter driving conditions,” WSDOT officials warned. “Bring chains, pack emergency supplies, and allow extra time to reach your destination.”
Visibility and Road Safety Concerns
Temperatures are expected to stay below freezing overnight, increasing the likelihood of black ice and snow-packed surfaces. Forecasters also warn of low visibility due to continuing snow showers through early Wednesday morning.
The snowstorm comes as part of a broader winter system moving through the Cascade Range, with up to 10 inches of new snow expected at higher elevations.
WSDOT Advises Delaying Travel if Possible
Officials are urging motorists to avoid mountain travel if possible until plows can clear the worst areas. Those who must travel should check the WSDOT Pass Report for real-time updates on chain requirements and traction advisories.
Stay connected with NapervilleLocal.com for more weather and travel updates as Washington’s mountain passes continue to see dangerous winter conditions.

I’ve lived in Naperville long enough to see how quickly our community changes — from new developments downtown to sudden shifts in our Midwest weather. Reporting on Naperville news and daily forecasts gives me the chance to keep neighbors informed about what really matters. My goal is simple: deliver clear, timely updates so you always know what’s happening in our city and what to expect from the skies above.