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Smoke Call Status:  Mon - Fri at 1300 PDT (excluding holidays)
Issued: 12:30 PM   Thursday, April 09, 2026
Discussion - Friday & Saturday
The upper level low just offshore to the west of North Ops will continue drifting slowly eastward and weaken to an upper level trough as it slowly moves inland Fri & Fri night. A stronger and more organized trough will track in from the NW on Sat. Unstable conditions with abundant showers and wet thunderstorm activity will keep smoke dispersion conditions active on Fri with breezy afternoon & evening S-SE to SW winds. Stronger southerly surface and transport winds will develop on Sat with widespread wetting rain and Mtn snow across North Ops further enhancing smoke dispersion conditions.
Transport winds
Mixing Heights
(mph) (ft AGL)
Friday Afternoon Friday Afternoon
Friday Night Friday Night
Click on images to enlarge
Transport winds
Mixing Heights
Saturday Afternoon Saturday Afternoon
Extended Outlook:  Sunday - Tuesday
A broad upper level trough overhead and continued showery and unstable conditions will keep afternoon smoke dispersion conditions active on Sun. Showers will taper off Sun night and end Mon as flat upper level ridging builds in from the west then shifts overhead Mon night and remains in place Tue. Diminishing smoke transport winds and stabilizing conditions will bring a gradual decreasing trend in smoke dispersion conditions Mon & Tue though still with most inland locations seeing moderate to locally good afternoon mixing heights in the afternoons.
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