PORTLAND, Ore. (KOIN) — Wind Advisories and Winter Storm Watches have been issued for the Portland metro as cold air blasts through the Gorge into the Willamette Valley and we prepare for another round of wintry weather.
Strong cold winds are blasting through the gorge and into the metro setting us up for more winter weather. The strongest winds are focused along the western end of the gorge and into northern portions of the Willamette Valley. Expect gusts between 40 and 50 mph Wednesday morning to Friday morning. Temperatures will top out in the 30s for the rest of the work week with daytime wind chills in mid-20s.
The first chance for valley snow arrives Wednesday evening, but moisture will be limited and most places will see only flurries to perhaps a dusting at most.
Winter storm watches go into effect Thursday afternoon as a more significant round of moisture moves in to bring better chances of snow, sleet and freezing rain.
A front will lift north through the valley Thursday evening and overnight bringing the potential for snow showers.
The best chance for accumulating snow will be north of Salem where the coldest air is in place. Areas south of Salem will likely see brief snow showers before quickly transitioning to sleet and freezing rain.
Northern portions of the valley will see anywhere from a dusting of snow to possibly 2 inches of snow before the transition to sleet and freezing rain happens. We’ll be watching closely for the timing of the transition. Right now, it looks like snow will change over to sleet Friday morning for the northern valley and then to freezing rain during the day Friday. We’ll gradually thaw to a cold rain by Saturday morning.
There’s the potential for two-tenths to four-tenths of an inch of ice by Saturday morning. Meanwhile, the gorge sees mainly snow with 2 to 4 inches possibl — and then the chance for freezing rain Saturday on top of the snow. This means we could be more likely see sleet/freezing rain instead of snow.
Keep in mind the forecast could change, but for now, it looks like the most significant impacts hold off until Thursday overnight and Friday.