Smoke Call Status:

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

Issued:

12:30 PM   Saturday, June 29, 2024

Discussion - Sunday & Monday

Upper level troughing will continue to the east across North Ops Sun with strong upper level ridging building along the coast Mon. Instability and limited mid level moisture associated with the trough will bring isolated mixed wet & dry thunderstorm chances to NE portions of the area Sun afternoon & evening as well as continuing to support active smoke dispersion conditions. Breezy afternoon & evening W-SW to NW winds favoring western areas, coastal gaps and the Cascade/Sierra crest eastward will provide the main smoke transport winds Sun though the potential for strong outflow winds near thunderstorms adds a transport direction wildcard. Winds will turn more N to NW Mon afternoon with breezy conditions continuing in the W & N. Afternoon mixing heights will be good to excellent across the N & E both days with moderate to good mixing in central areas and lower mixing heights limited to near coastal, marine layer influences locations.

(mph)

(ft AGL)

Sunday Afternoon

Sunday Afternoon

Sunday Night

Sunday Night

Click on images to enlarge

Monday Afternoon

Monday Afternoon

Extended Outlook:

Tuesday - Thursday

Hot & very dry upper level ridging will continue to strengthen along the coast Tue, shift inland Wed and remain centered overhead Thu & Fri. N to NE winds favoring areas from the Cascade/Sierra crest westward will push south across the area Mon night through Tue morning, diminish somewhat Tue afternoon and return again Tue Night into Wed morning. The stabilizing influence of the ridge will bring a gradual decrease in smoke dispersion conditions through the week with strengthening overnight thermal belt effects supporting the potential for smoke to accumulate over the area if fire activity picks up. Winds from Wed afternoon onward will oscillate between locally breezy NW to N winds with shallow W-SW coastal gap winds in the Greater Bay Area vicinity in the afternoons and more limited N to NE winds favoring channeled terrain areas from the Cascade/Sierra crest westward during the nights and mornings.

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