Meanwhile, flood watches are in effect along the Gulf Coast and in Florida.
More than 35 million people are under heat alerts on Sunday afternoon as a dangerous multi-day October heat wave continues across nearly all of California.
Temperatures are expected to soar up to 20 degrees above normal for this time of year, into the 90s and 100s, from Northern California, including the San Francisco Bay Area, to the Mexico border.
In some areas of California, especially urban areas, warm nights will provide little to no relief.
Los Angeles and San Diego remain under an extreme heat warning, with heat advisories posted on Sunday for San Francisco and Sacramento.

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