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Smoke Call Status:   Mon thru Fri excluding Holidays
Issued: 12:30 PM   Friday, April 24, 2026
Discussion - Saturday & Sunday
Solid clean-out event will occur during the weekend due to Low-Pressure influences. Onshore transport winds will be steady to stronger while mixing will likely be above average. Acute changes to the wind flow/mixing heights will occur with t-storms and showers favoring the north and east (mountains). 
Transport winds
Mixing Heights
(mph) (ft AGL)
Saturday Afternoon Saturday Afternoon
Saturday Night Saturday Night
Click on images to enlarge
Transport winds
Mixing Heights
Sunday Afternoon Sunday Afternoon
 Monday - Wednesday
Low-pressure influences are likely to wane some during this period although there is less confidence for the mid week period. Mixing should remain more than adequate during the afternoons with slightly strengthening overnight inversions. Transport winds are likely to be more variable with lessening speeds. No stagnant airmasses are anticipated although the horizontal air movement will be less in areas. 
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