Active Weather Alerts
Red Flag Warning
Issued: 9:43 PM May. 18, 2026 – National Weather Service
...RED FLAG WARNING REMAINS IN EFFECT UNTIL 8 PM PDT THIS EVENING FOR LOW RELATIVE HUMIDITIES FOR THE SAN JOAQUIN VALLEY AND WEST SIDE HILLS ALONG THE COASTAL RANGE... * AFFECTED AREA...Fire weather zone 579 West Side Hills on the Coastal Range. Fire weather zone 580 San Joaquin Valley. * WIND...GUSTING TO 20 MPH. * HUMIDITY...15% OR LESS THROUGH MONDAY EVENING. * HIGHEST THREAT...LOW RELATIVE HUMIDITIES LEADING TO EASIER FIRE STARTS. * IMPACTS...Any fires that develop will likely spread rapidly. Outdoor burning is not recommended. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now, or will shortly. A combination of strong winds, low relative humidity, and warm temperatures can contribute to extreme fire behavior. &&
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