The forecast fashions did a very good job on this morning’s snow occasion, which was primarily to the southeast of Seattle and over southern Puget Sound nation. 2-4 inches fell in locations and the I-5 hall close to Tacoma seemed like Alaska (see under)
However ANOTHER snow occasion is coming. And I do not wish to hype this…it’s not going to be a significant snow occasion. It is going to be a posh, marginal occasion that assessments our modeling methods’ constancy.
Tomorrow night time, a low heart will transfer off our coast, whereas chilly air is in place over the area (the map under exhibits sea stage pressure–solid lines–and low-level temperatures–color shading at 10 PM Friday). A weak entrance will method our coast, spreading some gentle precipitation inland.
Complicating the scenario, there will probably be easterly (from the east) winds pushed by a robust east-west strain distinction (increased strain to the east)
The newest UW high-resolution forecast of 24-h whole snowfall ending at 4 AM Saturday exhibits bountiful snow on the southeast aspect of the Olympics (see under).
There’s plenty of uncertainty with this forecast. I do know this as a result of our high-resolution ensemble prediction system (during which we run the mannequin many occasions, every with minor variations in initialization or physics) is far and wide (see snow prediction for Queen Anne, Seattle, under). From zero to 7 inches!
We can have a extra assured forecast tomorrow.
Lastly, I am unable to assist however point out the entrance web page story within the Seattle Occasions right now (see under), claiming that local weather change is leading to sea stage rise on the northwest Olympic Peninsula.
That is bogus and unsuitable.
Though international warming IS inflicting a gradual rise in sea stage around the globe, sea stage is definitely dropping or not altering alongside the Olympic coast.
Why? As a result of the Olympic Peninsula, and notably its western aspect, is RISING. Why rising?
Two causes. First, the peninsula was pushed down by the nice ice-age glaciers and continues to be rebounding after the glaciers retreated greater than 15,000 years in the past. Second, there’s a subduction zone off our coast, which causes the land to rise to the east.
Need some proof? Right here is the ocean stage at Tatoosh, on the NW nook of the Peninsula from a NOAA web site. Sea stage is dropping there.
