Short term...a strong Rex block sits along 140w. An upper low over west central Oregon combined with a strong 1060 mb high over northern B.C. is combining to give modified Arctic outflow to the area today. Williams Lake to Bellingham pressure gradients are over 14 mb this morning and will stay strong through this evening.
Long term...the Rex block is established and will take its time to break down. New long term models are generally holding western Washington in the northern stream through about Friday and keep higher pressure to the NE of the area preventing the influx of marine air.Rex Block is not a person, but rather a weather pattern that, in the USA, is most often found over the West Coast. According to the NWS weather glossary, a Rex block is "a blocking pattern where there is an upper level high located directly north of a closed low." The pattern takes its name from the meteorologist who first identified it. Here's what it looks like (thanks to Jeff Haby's valuable website here):
What this does here in the Pacific Northwest is dry things out. And the wind! Oh my! Our weather today is predicted to stay windy and the temperature will drop all during the day as that Arctic front moves down. I am sitting here, toasty and warm, listening to the gale force winds outside. With the wind chill it must be in the teens right now. My latte may have to wait.