Smoke Call Status:

Mon thru Fri excluding Holidays

Issued:

12:30 PM   Friday, January 30, 2026

Discussion - Saturday & Sunday

Ridging on Sat will weaken Sun due to a passing disturbance. Mixing heights will increase during the afternoon as a result while overnight inversions weaken. Transport winds will generally be light and variable on Sat with localized steadier southerly flows across the northern tier. S-SW transport winds will increase Sun. Ventilation will improve on Sun from the poor to locally moderate readings expected on Sat but some areas will remain in the poor category, like the Sacramento Valley. Looking for a partial clean-out event on Sun across the north and east. Light precipitation will likely be relegated to the North Coast.

(mph)

(ft AGL)

Saturday Afternoon

Saturday Afternoon

Saturday Night

Saturday Night

Click on images to enlarge

Sunday Afternoon

Sunday Afternoon

Monday - Wednesday

Ridging will return the earlier half of next week and allow for stronger overnight inversions and an increase in stability overall. This means lowering mixing heights. The general transport wind flow will turn more northerly and easterly although quite a bit of localized terrain influences are also expected. Ventilation will trend lower with a stagnant airmass likely developing across the majority of the area although  localized steadier transport wind flows will help offset that likely impact.

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