The most intense heat of the summer arrives this week when parts of Los Angeles will be under extreme heat warnings and other areas will face severe fire conditions. What authorities described as a severe heat event with days of temperatures in the upper 90s and well into the 100s will begin Wednesday and continue through the weekend.

A fire weather watch and red flag warnings have been issued for later this week across portions of Southern California. The National Weather Service has issued red flag warnings across large sections of Ventura and Los Angeles Counties, while a fire weather watch is also in place.