A "Dense Fog Advisory" has been issued by the National Weather Service for much of Oregon, along with small sections of Idaho. "Air Stagnation Advisories" have also been issued across Oregon ...

(KOIN) — Weather whiplash will continue for western Oregon and Washington this week. Foggy mornings will remain as afternoon sunshine helps warm temperatures across the region. The morning fog ...

PORTLAND, Ore. (KOIN) — Cooler nights and abundant moisture are helping increase western Oregon’s fog potential Tuesday night. Early evening fog prompted the National Weather Service out of ...

Western Oregon’s chilly and sometimes ... in the Eugene-Springfield area, National Weather Service meteorologist David Bishop said. “Freezing fog could certainly impact Eugene, Springfield ...

The National Weather Service issued a freezing fog advisory for several areas east of the Cascades, including Central Oregon, that expired at noon. Numerous crashes were reported around the region ...

Traveling the Oregon Cascade passes could ... Friday saw the Portland area in between storm systems, with nothing but spotty showers and patches of dense fog. By afternoon, sunshine was making ...

A winter storm warning for snow accumulations up to 20 inches is forecast for Oregon’s high Cascade Mountain passes into Tuesday. The warning kicked off at 8 p.m. Sunday and remains in place ...

The point of impact for the “atmospheric river” over the Pacific Ocean has moved ... throughout much of Oregon and Southwest Washington through Wednesday. This National Weather Service radar ...

Mere hours before the Great American Eclipse is expected to make its first appearances on the Oregon Coast, residents and visitors up and down the coastline are preparing for the celestial event ...

A wildfire burning in Oregon that's kicking smoke into neighboring states is now the largest active blaze in the U.S., authorities said, and fire crews are bracing for a storm late Wednesday that ...