In Southern California, the Shell Fire burned through nearly 2,000 acres in Kern County and was 65% contained by Tuesday morning, according to CAL Fire.

The fire sparked Sunday afternoon after a car traveling north on Interstate 5 experienced a mechanical issue and caught fire, which spread to nearby grass after the driver pulled over, ABC Bakersfield affiliate KERO-TV reported.

\"PHOTO:
Courtesy Daniel Yurchak via Reuters
PHOTO: Smoke from the Lava Fire billows over Mount Shasta in Siskiyou County, Calif., June 28, 2021.
>

The fire impacted traffic on Interstate 5 but no evacuations were ordered.

Video taken around midnight shows firefighters battling a wall of flames that engulfed a hillside near the city of Grapevine.

\"PHOTO:
Courtesy of Emma Escamilla via Reuters
PHOTO: The Shell Fire burns in Grapevine, Calif., June 28, 2021.
>

A decades-long megadrought, combined with current heat waves, has created tinderbox conditions and an early start to the dry season on the West Coast.

There are currently 52 wildfires burning in the West from Montana to California, according to officials. Six Western states are on alert for heat and fires, while a Red Flag Warning was issued for California and surrounding areas.

\"Hot, dry and breezy conditions will allow for new and existing fires to grow rapidly,\" the National Weather Service at Medford said in a press release after the Red Flag Warning was issued.

Although the historic heat wave will soon subside in Seattle and Portland, it will continue for much of the inland Western states, with temperatures continuing to reach more than 100 degrees Fahrenheit.

ABC News' Alice Chambers, Max Golembo and Jen Harrison contributed to this report.

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