The catastrophic Bootleg Fire, which began just north of the California boundary and has grown to more than 476 square miles (1,210 square kilometers), a region roughly the size of Los Angeles, has become the country’s largest blaze.

On Sunday, July 18, as flammable conditions predicted in the days ahead, the Bootleg Fire scorched more dry wooded land in Oregon, one of the hundreds of large fires raging throughout the West. As dry and windy weather took hold in the region, the Bootleg Fire developed rapidly overnight Saturday, July 17. According to the News & Observer, administrators have increased relocation in mostly countryside areas.

According to John Flannigan, an operations section commander on the 2,000-firemen fighting the flames, the inferno was fueled by unpredictable winds, making circumstances difficult for crews. In a statement acquired by the Associated Press, he stated, “Weather is really against us.”

The fire, which destroyed at least 67 houses and 100 structures and threatened thousands of others, is just 22% contained. The number of people affected by the evacuations has been increased to 2,000 people in a mostly rural area surrounded by lakes and nature preserves.

As potentially hazardous wildfire conditions are predicted shortly, a rapidly developing wildfire south of Lake Tahoe in California breached a roadway, triggering fresh emergency orders and the suspension of a bike ride through the Sierra Nevada on Saturday, July 17.

According to a notice placed on the 103-mile (165-kilometer) Death Ride’s website on Saturday, many communities in the region were evacuated on Saturday. All bike riders were instructed to leave the area. Thousands of cyclists and onlookers were stuck in the little town of Markleeville and raced to escape when the blaze broke out.

The U.S. Forest Service reported roughly 500 firefighters were combating the blazes on Sunday, “focusing on preserving life and property with point protection of structures and putting in containment lines where possible.”

The fire were exacerbated by afternoon gusts of 20 to 30 mph (32 to 48 kph) as they went through bone-dry trees and brush.

“With the very dry fuels, any thunderstorm has the potential to ignite new fire starts,” said a tweet obtained by the National Weather Service in Sacramento, California.

New notices of relocation in rural areas close to the Feather River Canyon were released on Sunday after the Dixie Fire in northern California erupted again. The blaze was 15% controlled and extended 39 square miles near the 2018 location of the largest U.S. fire in recent history.

By Sunday, a fire in northeast Oregon mountainous areas had grown to more than 17 square miles (44 square kilometers).

The Elbow Creek Fire, which forced the departure of many small, isolated towns near the Grande Ronde River, started on Thursday and was just 10% restrained.

According to the Humboldt-Toiyabe National Forest, the Tamarack Fire started by lightning on July 4 and erupted overnight. It covered 32 square miles (82 square kilometers) by Saturday evening. Markleeville, a small community near the California-Nevada state boundary, was threatened by the fire. Authorities reported it had caused at least three structures to be destroyed and was en route to the Alpine County Airport after leaping a roadway.

On Sunday, July 18, the National Weather Service warned of probable thunderstorms from the California coast to northern Montana and the possibility of “new lightning ignitions” due to unusually dried materials across the West.

According to the National Interagency Fire Center, about 70 active big wildfires in the United States have torched nearly 1,659 square miles (4,297 square kilometers). At least 16 large wildfires were blazing in the Pacific Northwest alone, the U.S. Forest Service reported.