Sonoma County, California, Friday, October 16, 2026

“Red Flag Warning issued October 16 at 10:38AM PDT until October 16 at 11:00AM PDT by NWS San Francisco CA”

The strongest north-northeasterly winds are beginning to diminish this morning and will continue to do so through the afternoon across the North Bay Interior Mountains. Therefore, the Red Flag Warning will be allowed to expire at 11 AM PDT. However, near critical fire weather conditions will persist through Saturday due to weak offshore winds and poor humidity values in the higher elevations.

“Red Flag Warning issued October 16 at 12:17AM PDT until October 16 at 11:00AM PDT by NWS San Francisco CA”

...RED FLAG WARNING REMAINS IN EFFECT UNTIL 11 AM PDT THIS MORNING DUE TO WIND AND LOW RELATIVE HUMIDITY FOR NORTH BAY INTERIOR MOUNTAINS... * AFFECTED AREA...North Bay Interior Mountains. * TIMING...Until 11 AM PDT this morning. * WINDS 20 FOOT...North winds 10 to 15 mph with gusts between 30 to 40 mph. The highest peaks above 4000 ft will see gusts up to 60 mph. * RELATIVE HUMIDITY...Relative Humidity between 13 to 23 percent. * IMPACTS...Any fires that develop will likely spread rapidly. Outdoor burning is not recommended.

A Red Flag Warning is issued when weather conditions that promote rapid spread of fire which may become life-threatening are forecast. This does not mean there is a fire. These conditions are either occurring now or will begin soon. It is important to have multiple ways to receive information from authorities. Follow all fire restrictions. One less spark, one less wildfire. Never leave burning debris or camp fires unattended; extinguish them completely. Avoid using equipment or machinery that could create a spark. Secure tow chains to avoid dragging and subsequent sparks. Never toss cigarette butts out of your vehicle's window. Remember, one less spark, one less flame. Familiarize yourself with your emergency plan! Where will you go? How will you get there? Do you have your go kit ready to go? Who will you call to let others know you are safe? Visit ready.gov/plan for more information.

“Red Flag Warning issued October 15 at 11:40AM PDT until October 16 at 11:00AM PDT by NWS San Francisco CA”

...RED FLAG WARNING IN EFFECT FROM 10 PM THIS EVENING TO 11 AM PDT FRIDAY DUE TO WIND AND LOW RELATIVE HUMIDITY FOR NORTH BAY INTERIOR MOUNTAINS... .Moderate offshore winds will develop Thursday evening into Friday morning over the North Bay Interior Mountains. Conditions will be very dry with very poor overnight humidity recoveries only reaching 14 to 24 percent. Rapid fire spread is possible given the combination of gusty northerly winds and very dry overnight conditions. The National Weather Service in San Francisco CA has issued a Red Flag Warning in effect from 10 PM this evening to 11 AM PDT Friday. * AFFECTED AREA...North Bay Interior Mountains. * TIMING...From 10 PM this evening to 11 AM PDT Friday. * WINDS 20 FOOT...North winds 20 to 30 mph with gusts up to 40 mph. The highest peaks above 4000ft will see gusts up to 60 mph. * RELATIVE HUMIDITY...Relative Humidity between 16 to 20 percent. * IMPACTS...Any fires that develop will likely spread rapidly. Outdoor burning is not recommended.

A Red Flag Warning is issued when weather conditions that promote rapid spread of fire which may become life-threatening are forecast. This does not mean there is a fire. These conditions are either occurring now or will begin soon. It is important to have multiple ways to receive information from authorities. Please advise responding agencies or fire crews in the field of this fire weather alert. Follow all fire restrictions. One less spark, one less wildfire. Never leave burning debris or camp fires unattended; extinguish them completely. Avoid using equipment or machinery that could create a spark. Secure tow chains to avoid dragging and subsequent sparks. Never toss cigarette butts out of your vehicle's window. Remember, one less spark, one less flame. Familiarize yourself with your emergency plan! Where will you go? How will you get there? Do you have your go kit ready to go? Who will you call to let others know you are safe? Visit ready.gov/plan for more information.