Firefighters get some help from cooler temperatures after California’s largest wildfire explodes

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...