Fog heading out, windy conditions coming in


PORTLAND, Ore. (KOIN) – There is something sluggish about driving home in the dark at 4 p.m. and in the fog.

This is not the case Wednesday when most of the fog should dissipate by mid-day at the latest.

What changed from Tuesday’s forecast? The answer to that is the wind. The last few days have been very calm and stagnant. With surface winds increasing in intensity, this will help mix out the conditions in the valley, meaning it will allow for more circulation and for dry and warmer air aloft to be pulled to the surface. This will help the fog, but the overall presence of high pressure will keep our Air Stagnation Advisory intact.

The views across Oregon and Washington are opening up to sunshine! It’s still a bit hazy or some passing clouds, but we will have more sunshine today than the last couple.

This afternoon, the wind speed will increase, pushing our wind gusts to around 25 to 30 mph running out of the east. A sure shot way to stop the fog from forming and it will dry out the surface creating a larger dewpoint depression by the afternoon.

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