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Smoke Call Status: The Smoke call is held daily at 1300 hrs
Issued: 12:30 PM   Saturday, November 07, 2009
Discussion:
Breaks in the cloud cover over all but the Northern 1/3 of the Northern CA region are allowing higher mixing heights and better smoke dispersion as the final portion of the low pressure trough passes overhead.  On Sunday the low pressure will be replaced by high pressure and the increased stability will mean lower mixing heights and a reduction in smoke dispersal conditions.  On Monday and Tuesday another low pressure system will bring improving smoke dispersion as conditions become less stable and S-SW winds increase.  Thick cloud cover and precipitation in some areas will cause poor mixing, however.
Transport winds
Mixing Heights
Sunday Afternoon Sunday Afternoon