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Smoke Call Status:   M-F (except holidays) @ 1300 hrs PDT
Issued: 12:30 PM   Sunday, June 08, 2025
Discussion - Monday & Tuesday
Upper level ridging overhead Mon will gradually shift eastward Tue with an upper level trough approaching the coast Tue afternoon & evening. Mid level moisture and instability embedded within the ridge will bring increasingly abundant mountain thunderstorm activity on Mon with isolated to scattered thunderstorms becoming more limited to N & NE areas Tue afternoon & evening. Onshore flow along the coast will bring breezy W-SW winds to Greater Bay Area coastal gaps which will expand across the Delta in the afternoons & evenings. Elsewhere, winds will remain lighter and be primarily terrain driven on Mon with breezy onshore flow winds broadening Tue afternoon & evening. Gusty thunderstorm outflow winds be a big concern on Mon afternoon & evening and add a wildcard to smoke transport directions. Afternoon mixing heights will be good to excellent across most inland areas with the deepest vertical mixing favoring the N & E and moderate to locally poor mixing heights under the coastal marine layer in portions of the west.
Transport winds
Mixing Heights
(mph) (ft AGL)
Monday Afternoon Monday Afternoon
Monday Night Monday Night
Click on images to enlarge
Transport winds
Mixing Heights
Tuesday Afternoon Tuesday Afternoon
Extended Outlook:  Wednesday - Friday
Upper level troughing will deepen along the coast Wed-Fri strengthening SW flow aloft across North Ops. Shallow onshore flow will progressively deepen mid to late week supporting increasingly breezy W-SW to NW coastal gap winds with an increasing trend in breezy afternoon & evening NW to SW winds across inland areas and locally stronger SW to W favoring the east and Zephyr wind areas late week. Afternoon mixing heights will remain good to excellent across most inland areas with more limited vertical mixing in the west and especially under the coastal marine layer.
Helpful Resources:
Air Resources Board
San Joaquin Air Quality
AirNow Fire and Smoke Map
North Zone Predictive Services Weather Page
South Zone Predictive Services Weather Page
NWS California Fire Weather Page
NWS Spot Forecast Request
This Product was developed by the Predictive Services group, located at the North Zone Coordination Center in Redding, California