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

Thousands of homes in Northern California wine country and central Oregon were under evacuation orders and warnings Sunday as firefighting crews battled wildfires in dry, hot weather. The Pickett Fire,

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

Wildfires have cropped up in different regions across California over the past several days as a record-breaking heat wave blankets most of the state, with more fire activity expected amid a spate of dry lightning and thunderstorms.

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