June 22, 2019 – Breezy northerly winds and low humidity will continue to bring elevated fire weather concerns through late this afternoon.
Warmer than normal over the weekend, followed by much cooler temperatures next week.
Discussion
Another day of critical fire weather conditions expected across interior NorCal as breezy northerly winds continue, along with low humidity.
Peak wind gusts will be in the 20 to 35 range, mainly on the west side of the Valley and adjacent foothills.
A Red Flag Warning remains in effect until 6 PM this afternoon. Any activity that could spark a fire is strongly discouraged. Winds will subside late this afternoon.
A warming trend is likely this weekend as Pacific ridging extends into NorCal. Afternoon highs will be in the mid to upper 90s over the Central Valley, with 60s and low 80s over the mountains; warmest readings anticipated on Sunday. Lighter winds expected on Sunday.
Ensemble guidance supports synoptic cooling across interior NorCal early next week as an upper level system moves out of the Gulf of Alaska, and deepens along the West Coast. A slight cooling trend is anticipated on Monday, followed by more substantial cooling on Tuesday.
High temperatures on Tuesday will be in the mid 80s to low 90s across the Valley, with 60s and 70s over higher terrain. These forecast highs range from 3 to 8 degrees below normal. As the trough deepens, winds will become breezy at times.
Extended Discussion (Wednesday through Saturday)
Ensemble data continue to support a trough over the region during the middle of next week with temperatures below average. Weather is expected to remain dry with breezy to windy conditions at times under strong southwest flow aloft. Indications are that the trough will weaken by the end of the week resulting in warmer temperatures and less wind.