Smoke Call Status:

Mon thru Fri excluding holidays

Issued:

12:30 PM   Tuesday, December 09, 2025

Discussion - Wednesday & Thursday

Ridging will remain the main pattern influencer Wed and Thu. This means strong overnight inversions and a fairly stable airmass during the afternoons. Therefore, mixing heights will be near to below normal and generally in the below normal category. Transport winds will also be on the lighter side with just some localized steadier winds. Ventilation as a whole will be poor to very poor most locations.

(mph)

(ft AGL)

Wednesday Afternoon

Wednesday Afternoon

Wednesday Night

Wednesday Night

Click on images to enlarge

Thursday Afternoon

Thursday Afternoon

Extended Outlook:

Friday - Sunday

Much of the same expected with strong inversions and lighter transport winds due to ridging impacts. Therefore, ventilation will remain mostly in the poor to very poor category.

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