There is an upper low positioned SW of the area and will spin and drift slowly to the east.
The upper low is in a perfect spot on today and Wednesday along with some surface high pressure to support a fast warm-up as the marine depth shrinks dramatically with some morning offshore and weak onshore until the later afternoon or evening. Inland temps could near 100 on Wednesday before we back off at the end of the week, elsewhere above average temps for Wednesday with a gradual cool-down Thursday.
Late this week into the weekend temps will take a big drop with another trough of low pressure swinging thru the Pac NW and Norcal, I think it is a dry trough passage.
