Oak Fire in California threatens Yosemite as US faces heatwave

North-western state of Alaska also fending off rare number of wildfires

Powered by automated translation

California firefighters on Monday were fighting to slow the spread of a major wildfire that was threatening to engulf parts of America's famous Yosemite National Park.

The Oak Fire in northern California, which comes as a record heatwave has settled over large parts of the US, expanded from 650 hectares to 4,845 hectares on Friday, local news site SFGate reported, and has grown to at least 8,000 hectares since then.

Its continued spread has made it the state's largest wildfire this year and has forced more than 3,000 people to flee.

Another wildfire in Yosemite earlier this month threatened the park's sequoia trees.

Emergency declared over wildfire near California's Yosemite National Park

MARIPOSA, CALIFORNIA - JULY 23: Cal Fire firefighters battle the Oak Fire on July 23, 2022 near Mariposa, California.  The fast moving Oak Fire burning outside of Yosemite National Park has forced evacuations, charred over 11,500 acres and has destroyed several homes since starting on Friday afternoon.  The fire is zero percent contained.    Justin Sullivan / Getty Images / AFP

Drought and warming temperatures mean California now experiences catastrophic wildfires all year. The western state has seen both its largest and deadliest wildfires in history in the past five years.

Cal Fire, the state's firefighting agency, on Monday said it did not know the cause of the Oak Fire, but that it has contained about 10 per cent of the blaze.

Governor Gavin Newsom declared a state of emergency and issued financial assistance to Cal Fire.

Further north, Alaska has reported more than 540 wildfires in a record season that has only just begun.

The largest US state often battles brush fires each year, but the large number this early in the season is unheard of, with numbers on track to surpass the historic wildfire seasons of 2015, 2004 and 2005.

Firefighters across the country are also facing a record-breaking heatwave.

The heatwave hit the north-east region of the country particularly hard at the weekend, with temperatures nudging 40º Celsius. Other regions are expected to experience extreme heat throughout the week.

Updated: July 25, 2022, 7:57 PM