Poor Air Quality & Fire Weather Watch upgraded to Red Flag Warning, Wed-Thurs

Posted on September 20, 2023

A map of the North Bay Area with an area hilighted as being under a red flag warning.

Update: September 20th, 2:52 PM: The National Weather Service has upgraded and extended the Fire Weather Watch to a Red Flag Warning for the North Bay interior mountains. The warning is in effect beginning at 11:00 p.m. Wednesday (9/20) to 5:00 p.m. Thursday (9/21). Read the full warning.

Original Post

Fire Weather Watch

The National Weather Service has issued a Fire Weather Watch for the North Bay interior mountains beginning at 11:00 p.m. Wednesday (9/20) to 11:00 a.m. Thursday (9/21) due to forecasted dry offshore winds and low overnight humidity. Wind speeds of 10 to 20 mph with gusts of 30 mph are expected. Read the full warning from the National Weather Service.

A Fire Weather Watch means that critical fire weather conditions are forecast to occur. Listen for later forecasts and possible Red Flag Warnings or Public Safety Power Shutoffs.  As always, please make sure that you are signed up for SoCo & Nixle alerts and are prepared in case of an emergency, learn more on our Emergency Preparedness page.

Poor Air Quality Advisory

Smoke from wildfires currently burning in Northern California and Southern Oregon is impacting the air quality throughout Sonoma County. Air quality will likely remain degraded through Thursday, September 21st. The air quality is expected to be in the moderate range during this event. There are no wildfires in Sonoma County at this time.

Some people may experience adverse health effects from the smoke. Members of sensitive groups may experience effects that are more serious. Older adults, pregnant individuals, children and people with heart disease or respiratory illness should avoid prolonged outdoor exertion. Everyone else, especially children, should limit outdoor exertion. Take more breaks during outdoor activities. To learn more, see the press release issued by the County of Sonoma.
For information on current air quality visit: www.airnow.gov.


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