Temperatures across interior Southern California will climb dramatically over the next few days, as a prolonged, dangerous heat wave begins Wednesday and could persist into next week.

A heat wave is supposed to hit Southern California this week, coupled with gusty winds. LA officials say they're prepared for the increased fire risk. The greatest risk areas are in the San Fernando Valley.

"Dangerously hot conditions" are expected for much of the region as LA and Ventura counties face conditions favorable for "explosive fire behavior."