More than 15 million people are under fire weather alerts in California -- from Redding to Sacramento to San Francisco to Burbank -- due to dry and windy conditions.

Timelapse video from Tuesday (August 6) shows a fire vortex whirling and getting more intense as the Park Fire continues to burn. The blaze has grown into California's fourth largest on record, burning an area larger than the city of Los Angeles across two counties.

The 245,000-acre fire, worsened by thunderstorms and strong winds, is so big it’s even creating its own weather. The Biggest Blaze in the US A massive wildfire currently burning near the Oregon–Idaho border, about 130 miles west of Boise, Idaho, has officially been called the biggest active blaze in the US – so big, in fact, that it’s creating its ... Read More