Portland, Oregon – Rain ramps up quickly across northwest Oregon, with a soaking system expected to hit during the Tuesday commute and continue into Wednesday, raising concerns for slick roads and reduced visibility.
According to the National Weather Service, rain chances surge to 90 percent by Tuesday afternoon and reach 100 percent Tuesday night into early Wednesday. Rainfall totals between a half inch and one inch are possible, with steady precipitation expected to impact major corridors including I-5, I-84, and Highway 26.
Portland, Beaverton, and Gresham will see increasing rain after 11 a.m. Tuesday, with winds gusting up to 30 mph overnight. These conditions could slow travel during the evening commute and create ponding on roadways, especially in low-lying areas.
By Wednesday, showers continue with snow levels dropping from around 2,500 feet to near 2,000 feet late, bringing a rain-snow mix to higher elevations in the Coast Range and Cascades foothills. Urban flooding is not expected, but clogged drains could lead to localized water buildup.
Conditions begin improving Thursday, though scattered rain may linger into the afternoon. Drier and milder weather returns by Friday, offering a break before the next system develops.
Drivers should allow extra time Tuesday afternoon through Wednesday morning. Additional advisories may be issued as the system moves inland.
