I didn’t plan on posting anything this morning, but got this picture in email and had to share:
It’s yesterday afternoon/evening from Chris Markes. Hopefully you recognize it as Mt. Hood. It’s okay if you just moved here and don’t.
This morning is interesting…the low cloud/fog deck has expanded in coverage and appears to be up around 1,000-1,500′. This is the beginnings of our own little “cold pool” in the western valleys. Similar to what is often seen east of the Cascades when we get the east wind. The morning sounding at Salem showed the coldest temp up around 2,000′ or so, then SLIGHTLY warmer above (-5.5 at 850mb). The KPTV tower at 1800′ is significantly colder this morning near the top of that “cold pool”, yet temperatures at the lowest elevations are warmer compared to Saturday with more cloud/fog coverage. It is the coldest morning of winter so far at the edges of the clouds/fog. Sandy, Estacada, Colton, Corbett, all very chilly with clear skies much (or all) of the night. Some of those spots made it into the teens. Same thing north of the metro area with clear skies dropping the Longview area into the teens.
Don’t complain, it dropped to -26 last night in Lakeview! That’s the coldest temperature I’ve seen in Oregon in a long time…
I thought the lower dewpoints Friday would have kept a solid stratus layer from developing, but looking at dewpoints (mid-upper 20s) at the lowest elevations, it’s clear that didn’t happen. Gut feeling is we maybe be locked in with gray the whole week; that’s after tossing model information out the window. Tomorrow and Tuesday much warmer air arrives overhead, and that should seal our fate, creating a strong inversion.
By the way, it was interesting that a bunch of the 00z ECMWF ensemble members must try to push something cold down the east side of the ridge next Thursday-Friday. Look how many of them have the big dip on the 17th:
Chief Meteorologist Mark Nelsen