Multiple wildfires have already erupted in parts of the western United States, including in Oregon and California's Napa County.

Southern California should prepare for 'dangerously hot' temperatures through Saturday, but elevated heat will persist into early next week.

Temperatures are expected to reach triple digits in parts of the Inland Empire on Wednesday, parts of L.A. and Orange counties by Thursday

The peak of the heat wave is expected Thursday and Friday, the National Weather Service said. While it’s brought hotter temperatures than in recent weeks, it is not particularly extreme in terms of all-time Southern California highs. “This is definitely more normal heat for this time of year,” Sam Zuber, an NWS meteorologist said.

Fire weather alerts are in effect for parts of California and the Pacific Northwest amid an ongoing heat wave. The hot temperatures continue on Monday with Oregon and Washington seeing temperatures in the high 90s and even nearing the triple digits in Medford.

A fast-spreading wildfire in California's wine country prompted mandatory evacuation orders as firefighters continued to battle the blaze from the ground and air on Sunday. The Pickett Fire in Northern California's Napa County has burned some 6,