A map of the areas affected by the red flag warning.
High heat and low humidity has prompted a red flag warning for Southern California’s mountains through Tuesday evening.
The warning starts in Kern County and extends south into Ventura and Los Angeles counties, according to the National Weather Service. A strong ridge of high pressure along with a weak offshore flow will bring hot and dry conditions to the region.
Red flag warnings mean very low humidity, which lead to the material that fuels fires being critically dry. A fire sparked under these conditions may lead to explosive fire growth.
Cal Fire urges Californians to be extremely cautious during red flag warnings, especially while performing outdoor activities that could spark a fire.