Weather

Red Flag Warning Issued For Napa, Sonoma Counties

Forecast officials warn of "critical fire weather conditions" throughout the North Bay.

NAPA and SONOMA COUNTIES, CA – A red flag warning is in effect in Napa, Sonoma and Marin counties through Thursday at 5 p.m. due to hot, dry and windy conditions expected in the region, according to the National Weather Service.

The most hazardous conditions in the San Francisco Bay Area are expected to be in the North Bay mountains, as well as the East Bay hills, Diablo Range and the Santa Cruz Mountains, according to the weather service. A red flag warning is issued when a combination of strong winds, low relative humidity and warm temperatures can contribute to extreme fires.

Any fires that develop will likely spread rapidly, and residents are urged to refrain from any outdoor burning, officials said.

Find out what's happening in Sonoma Valleyfor free with the latest updates from Patch.

--Bay City News contributed to this report/Photo courtesy Autumn Johnson/ Patch

Get more local news delivered straight to your inbox. Sign up for free Patch newsletters and alerts.