... Major change in the weather pattern for the second half of the week for our entire area...
... Possible frost Friday and Saturday night over Napa and Sonoma counties...
A strong storm system is forecast to dive down from Canada late Wednesday night and move into southern Nevada on Friday. As this system moves to the south much cooler air will accompany it along with very gusty winds from the north. Although the event is still a few days away... the different computer models are in good agreement that colder weather along with windy conditions will occur through the entire district.
Ahead of the storm... the pressure gradient will greatly increase which will lead to an increase in northerly winds by Thursday afternoon. Winds will continue to remain strong and blustery all of the way through Saturday afternoon. Wind gusts are expected to approach or exceed 40 mph in many areas especially for higher elevation locations and the coastal waters. Even lower lying locations including places along the coast will have the potential for very windy conditions during this period.
Beside the stronger winds... colder weather will blanket our entire area. Persons in the North Bay should be prepared for much colder overnight lows. Patchy frost over Napa and Sonoma counties is also expected due to low temperatures dropping to around freezing in sheltered spots. Persons with agricultural interests in the Napa and Sonoma areas should pay particular attention to this developing situation.
Conditions will start to moderate on Sunday as a ridge of high pressure builds back into California.
Friday Night through Sunday
Special Weather Statement