Smoke Call Status:

Weekdays (M-F) @ 1300 hrs PDT (except holidays)

Issued:

12:30 PM   Friday, April 26, 2024

Discussion - Saturday & Sunday

A very weak Ridge will develop and a weak disturbance will move along the periphery of it during the weekend. Stability will increase some during this period but more than adequate mixing will be found across the interior with increasing mixing heights trends on Sun. Due to the proximity of the Pacific Jet, steadier westerly winds will prevail across most of the area. Therefore, ventilation will be pretty good across most of the area. A few light showers will be possible across the north due to the disturbance passage on Sat.

(mph)

(ft AGL)

Saturday Afternoon

Saturday Afternoon

Saturday Night

Saturday Night

Click on images to enlarge

Sunday Afternoon

Sunday Afternoon

Extended Outlook:

Monday - Wednesday

The Pacific Jet will remain near the area with disturbances of varying strength moving along it. Mixing heights will remain more than adequate across the interior or away from the Coastal influences. Transport winds are expected to turn more N-NW Mon & Tue and be fairly steady favoring areas west of the Cascade-Sierra Crest, especially impacting the Sacramento Vly. It is too early to say what the transport wind direction or speeds would be for Wed since the models have jumped around a bit for the latter half of next week. Not expecting any sort of stagnation scenario during this period with more moderate to good ventilation and just localized poor 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