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Smoke Call Status: |
Mon
thru Fri excluding holidays |
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Issued: |
12:30 PM
Tuesday, October 21, 2025 |
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Discussion -
Wednesday & Thursday |
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Weak
Cut Off Low will brush southern portions of the region on Wed with Ridging
influences elsewhere and regaining control over all of N. CA on Thu. Mixing
heights will generally be higher on Wed compared to Thu but near to a little
above seasonal levels are anticipated. Transport winds will be more variable
with a slight increase anticipated on Wed, especially across the Greater Bay
Area with lesser lighter speeds on Thu. Afternoon ventilation will be
variable with generally poor to moderate levels and some locally good
readings. Overnight inversions will be fairly strong. Some light showers
could impact mainly the N. Sierra on Wed. |
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(mph) |
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(ft AGL) |
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Wednesday Afternoon |
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Wednesday Afternoon |
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Wednesday Night |
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Wednesday Night |
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Click on images to enlarge |
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Thursday Afternoon |
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Thursday Afternoon |
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Extended Outlook: |
Friday -
Sunday |
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Ridge
break-down expected Fri thru Sun due to an active Jet Stream pattern.
Transport winds will noticeably increase from a southerly and westerly
direction during this period but especially favoring Fri & Sat. Outside
of the heavier precipitation which is expected in areas, mixing should be
above seasonal levels. A clean-out event is likely during this period with
weaker overnight inversions. |
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Helpful Resources: |
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Air
Resources Board |
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San
Joaquin Air Quality |
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AirNow Fire
and Smoke Map |
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North Zone
Predictive Services Weather Page |
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South Zone
Predictive Services Weather Page |
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NWS
California Fire Weather Page |
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NWS
Spot Forecast Request |
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This Product was developed by the Predictive Services group,
located at the North Zone Coordination Center in Redding, California |
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