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Smoke Call Status: held daily at 1300 PDT
Issued: 12:30 PM   Tuesday, June 27, 2017
Discussion:
A low pressure trough will be over Northern CA today then move east Wednesday. High pressure will build overhead by Thursday. Active smoke dispersion conditions can be expected today. Wednesday the pattern will begin to transition back to high pressure and stable conditions so smoke dispersion conditions will diminish slightly. Thursday the expected stable conditions will lead to more noticeably diminished dispersion conditions.
Transport winds
Mixing Heights
(mph) (ft AGL)
Wednesday Afternoon Wednesday Afternoon
Wednesday Night Wednesday Night
Click on images to enlarge
Transport winds
Mixing Heights
Thursday Afternoon Thursday Afternoon
Extended Outlook:
Friday through Sunday:  Smoke dispersion conditions may improve a bit Friday into Saturday if a small weather system moves through the region, then will diminish somewhat again Sunday. If the low does not affect the region much, then high pressure will prevail and afternoon dispersion will become limited. 
Helpful Resources On-Line:
Air Resources Board
San Joaquin Air Quality
North Zone Predictive Services
South Zone Predictive Services
SPOT Forecast Request North
SPOT Forecast Request South
This Product was developed by the Predictive Services group, located at the North Zone Coordination Center in Redding, California