Winds to weaken early this week across California; storm to bring cooler air, rain late week
October 14, 2017; 8:34 PM
Wildfires continue to blaze out of control across California, most notably across northern California and the Bay Area.
Gusty, offshore winds driving these fires will continue into Monday, although they will be gradually weakening over this time.
— Jordan Root (@RootWx) October 14, 2017
A strong area of high pressure over the Great Basin and northern Rockies will weaken and shift southeast over the next few days. This will weaken the pressure gradient across California and the offshore winds will weaken as a result.
However, despite the offshore winds weakening, they still will bring warm and dry air into many of the valleys. Humidity values will continue to drop into the middle teens Sunday and Monday continuing the critical threat for wildfires.
Southern California will face Santa Ana winds through Monday with gusts up to 55 mph. Again, the wildfire threat will be at a critical stage as ignition and growth can occur easily under this conditions.
Some improvements are expected starting at the middle of the week and continuing to the end. A strong upper-level trough will begin to descend on the West starting Wednesday and continuing through Friday and will bring a period of unsettled and cooler weather to the Northwest and northern California.
Onshore flow will return and cooler air will arrive as well as increasing humidity. All of this will help out with battling the wildfires.
Models are also in agreement that a plume of moisture will accompany this system and will help bring rain and mountain snow into the Northwest. As the trough digs farther south Thursday, rain is expected across northern California. This rain would be a big help with the wildfires.
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