A red flag warning has been issued for mountainous areas of Southern California, including in L.A., Ventura, and Santa Barbara counties.

Parts of Santa Barbara County are under a red flag warning this week as temperatures are heating up. Red flag warnings are in effect for the Santa Ynez

A red flag and extreme heat warnings are in effect in the Santa Clarita Valley through the weekend, due to triple-digit temperatures.

The National Weather Service has issued a red flag warning beginning Thursday morning for Santa Barbara, Ventura, and Los Angeles counties as high heat and monsoonal moisture bring an increased risk of fire starts and extreme wildfire behavior. The warning will be in place until Saturday and may be extended.

The National Weather Service has issued a Red Flag warning for the Southern Willamette Valley for Thursday afternoon and evening.

The National Weather Service (NWS) has issued a Red Flag Warning and Fire Weather Watch for the Valley and surrounding

COURTESY NATIONAL WEATHER SERVICE A red flag warning is in effect for the Leeward side of all Hawaiian Islands and the interior of Hawaii island. UPDATE : 3 :40 p.m.

The fire warning system is statewide. Oʻahu, Maui, Kauaʻi and Hawaiʻi Island all follow the same Fire Weather Watch and Red Flag Warning levels set by the state’s National Weather Service office.