A Red Flag Warning is in effect from 10 a.m. Monday to 4 a.m. Wednesday for all Southern California mountains, the Inland Empire and San Diego County valleys due to strong gusty Santa Ana winds and low relative humidity, the National Weather Service (NWS) reports.

A red flag warning for dangerous fire conditions will be in effect from 10 a.m. Monday until at least 4 a.m. Wednesday due to strong Santa Ana winds and low humidity. The warning extends to the coast, which is rare, although the areas most at risk include the inland valleys and mountains.

A Red Flag Warning is in effect through Thursday evening for San Diego County valleys due to dangerously low relative humidity and gusty northeast to easterly winds. The warning will remain in place for mountain areas through Friday.

San Diego, CA–The National Weather Service in San Diego has issued a Red Flag Warning to communities in the inland valleys and mountains this week in San Diego County. Strong gusty winds from the northeast to east and low humidity are expected from 3 p.m. to 7 p.m. on Wednesday and Thursday.

The NWS San Diego has issued Red Flag Warnings and High Wind Warnings for much of the region, highlighting the risk for rapid fire spread given strong winds and low humidity. Friday through the weekend, we expect to see a reprieve of sorts, with weaker winds and a rise in humidity.