The weather pattern along the West coast from Washington state to California is very dull. In general, there is a ridge of high pressure at 500 mb in control.
This high is providing warm temperatures away from the immediate beaches but not excessively hot weather as we had in portions of Southern California late last week and over the weekend. Temperatures will be averaging above normal.
There is a broad and relatively weak, closed low well west of the southern Oregon/northern California coast. While this spins well offshore the next couple of days, it will eventually head east by Friday and the weekend. Models are in agreement on this. What they are not in agreement on is how far south the low will go. The main effect on the weather would be on how much cooler air occurs, especially in central and Southern California. Precipitation is not going to be much, though there could be a mainly afternoon shower or thundershower in a few spots over Oregon, northern California and northern Nevada. Monsoon moisture is not going to be a player.
Some of the coldest weather in a long time has been occurring and continued even to this morning.
This storm is going to bring about accumulating snow to places that don’t see it often.
In the citrus areas from the San Joaquin Valley to northern Ventura County expect a hard freeze in most area
a well established spoke of energy rotated northeast and is bringing some areas a LOT more rain than the sprinkle or light shower I predicted.
It looks like the Cascades of Washington will get some important snow Sunday and Monday.
Southern California looks like it will get wet Thanksgiving and Black Friday.