Smoke Call Status:

Weekdays (Mon-Fri) @ 1300 hrs PDT (except holidays)

Issued:

12:30 PM   Friday, May 16, 2025

Discussion - Saturday & Sunday

Trough influence on Sat then the Trough should transition eastward and provide more Ridging influences on Sun. Mixing heights will generally be above normal and transport winds will be steady to strong. The transport wind flow will generally be W-NW Sat and more northerly Sun. Vent rates will be good to excellent during this period leading to a solid clean-out event. Precipitation will tend to impact the northern and eastern tier Sat-Sat night.

(mph)

(ft AGL)

Saturday Afternoon

Saturday Afternoon

Saturday Night

Saturday Night

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Sunday Afternoon

Sunday Afternoon

Extended Outlook:

Monday - Wednesday

Ridging Mon should give way to near zonal Jet influences, including weak disturbances Tue-Wed. The steady to stronger northerly transport winds will continue Mon and to a lesser extent Tue morning before becoming lighter and a bit more variable Tue afternoon. A steadier NW-W-SW onshore flow should develop Wed afternoon.Afternoon mixing heights appear to be near to above normal during this period with highest values across inland areas. Nighttime inversions should strengthen Sun night and Mon night.

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