FOREST RANCH, Calif. (AP) Thousands of firefighters battling a wildfire in Northern California received some help from the weather Saturday hours after it exploded in size, scorching an area greater than the size of Los Angeles. The blaze was one of several tearing through the western United States and Canada, fueled by wind and heat.

Cooler temperatures and an increase in humidity could help slow the Park Fire, the largest this year in California. Its intensity and dramatic spread led fire officials to make unwelcome comparisons to the monstrous Camp Fire , which burned out of control in nearby Paradise in 2018, killing 85 people and torching 11,000 homes.

Paradise again was near the danger zone. The entire town was under an evacuation warning, one of several communities in Butte County. Evacuation orders were also issued in Plumas, Tehama and Shasta counties. An evacuation warning calls for people to prepare to evacuate and await instructions, while an evacuation order means to leave immediately.

Temperatures are expected to be cooler than average through the middle of next week, but that doesnt mean that fires that are existing will go away, said Marc Chenard, a meteorologist at the National Weather Service Weather Prediction Center in College Park, Maryland.