Smoke Call Status:

Mon thru Fri excluding Holidays

Issued:

12:30 PM   Tuesday, February 03, 2026

Discussion - Wednesday & Thursday

Ridging will be the main weather pattern during this period which means stronger overnight inversions and a more stable airmass during the afternoons although some improvement is likely on Thu due to the approach of an offshore Trough. The main transport wind direction during the afternoon will be N-NE-E-SE although lots of variability also expected with lighter flows overall. Ventilation will generally be in the poor to locally moderate category with some improvement on Thu thanks to increases in both transport wind and mixing height.

(mph)

(ft AGL)

Wednesday Afternoon

Wednesday Afternoon

Wednesday Night

Wednesday Night

Click on images to enlarge

Thursday Afternoon

Thursday Afternoon

Friday - Sunday

Alternating weather patterns will occur during this period with Ridge weakening/disturbance influences Fri and Sun while Ridging will be dominant on Sat. This means fluctuations in both mixing heights and transport winds. Stronger overnight inversions are expected Fri night and Sat night. Transport wind direction will be more of the onshore variety Fri and Sun with a bit more variability on Sat. The poorest ventilation day should be Sat. Partial clean-out conditions are likely to occur Fri and more so on Sun.

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