Red Flag Warning

Locations Affected

Sacramento, CA ∙ Stockton, CA ∙ Elk Grove, CA ∙ Modesto, CA ∙ Vallejo, CA ∙ Fairfield, CA ∙ Roseville, CA ∙ Tracy, CA ∙ Redding, CA ∙ Chico, CA

Full Alert Message

URGENT - FIRE WEATHER MESSAGE National Weather Service Sacramento CA 1245 PM PDT Sat Jun 21 2025 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 9 AM PDT SUNDAY FOR GUSTY WINDS AND LOW HUMIDITY FOR FIRE ZONES 215,216,217,218,219,263 AND 279... * Winds...North winds 10 to 20 mph with gusts 30 to 40 mph. Strongest winds expected across the Sacramento Valley along and west of Interstate 5, the Delta, and the northern San Joaquin Valley. * Humidity...Minimum daytime humidity: 15 to 25 percent. Overnight recoveries in the mid 40s to mid 50s. * Highest Threat...Sacramento Valley along and west of the I- 5 corridor, adjacent Coastal Range, and the northern San Joaquin Valley. * Impacts...The combination of gusty winds and low humidity can cause fire to rapidly grow in size and intensity. 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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