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This story was updated at 5:30 a.m. Monday. Check back for the latest information.

Firefighters are battling several major wildfires across California, including an explosive Sonoma County blaze that has engulfed 54.000 acres, the state Department of Forestry and Fire Protection reports.

The National Weather Service has issued red-flag weather warnings for extreme fire risk in Northern and Southern California, with most set to expire Monday or Tuesday night, Cal Fire reports.

On Sunday, Gov. Gavin Newsom declared a state of emergency across California as a result of the wildfires, fed by high winds.

In all, California wildfires have burned 162,693 acres, killed three people and destroyed 405 buildings so far in 2019, according to Cal Fire.

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