Portland, Oregon – Slick roads and reduced visibility could disrupt travel across the Pacific Northwest by Wednesday morning as repeated rounds of rain begin impacting Washington and Oregon during peak commute hours.
According to the National Weather Service Climate Prediction Center, the Pacific Northwest is in a high-confidence zone for above-average precipitation from Wednesday through Saturday, with totals expected to run 30 to 60 percent higher than normal. Temperatures are also trending above seasonal levels, bringing a milder and consistently damp pattern across the region.
Seattle, Portland, and Tacoma are expected to see multiple waves of rainfall, increasing the risk of standing water on major corridors including I-5 and I-90. In western Washington, including Everett and Olympia, steadier rain could reduce visibility and overwhelm drainage systems during peak travel times. In Oregon, cities such as Eugene, Salem, and Hillsboro may also see ponding on roadways, while central areas like Bend could experience periods of steady rain impacting travel.
Drivers should slow down on wet roads, avoid water-covered lanes, and allow extra time for travel. Residents are encouraged to clear storm drains and monitor areas prone to poor drainage.
This wet and warm pattern is expected to continue through Saturday night, with additional advisories likely as rainfall totals and timing become more defined.
