In this case, the fire is predicting what the weather will do.” “Normally, the weather predicts what the fire will do. The fire is “so large and generating so much energy and extreme heat that it’s changing the weather,” Kauffman explained. These clouds essentially become their own thunderstorms and can contain lightning and strong winds. Pyrocumulus clouds form when extreme heat from the flames of a wildfire force the air to rapidly rise, condensing and cooling any moisture on smoke particles produced by the fire. In Oregon, fire officials noted the Bootleg Fire is showing “aggressive surface spread with pyrocumulus development.” There’s also a chance of dry storms, which lack the precipitation that is desperately needed to help calm the flames.Ī satellite image posted by the weather service shows smoke from the fires in western Canada and the Intermountain West billowing over the region. Temperatures in the region will remain up to 10 degrees above normal over the next 48 hours, CNN Meteorologist Michael Guy said. A red flag warning means “critical fire weather conditions are either occurring now, or will shortly,” the prediction center said.Įxcessive heat warnings will continue for more than 337,000 people, and nearly 650,000 more are under a heat advisory. Much of the West remains under the threat of fire conditions Tuesday, with nearly 3.5 million people under red flag warnings, according to a tweet from the National Weather Service Weather Prediction Center. The climate crisis has made deadlier and more destructive wildfires the new normal. It’s one of at least eight large fires burning in Oregon and one of at least 80 burning across 13 states, according to the National Interagency Fire Center.
It grew to nearly 364,113 acres Monday and is 30% contained, Oregon Department of Forestry spokesperson Marcus Kauffman told CNN. The Bootleg Fire has scorched 537 square miles - an area larger than Los Angeles and about half the size of Rhode Island.
By Joe Sutton, Michael Guy and Hollie Silverman | CNNĪs hot, dry weather conditions continue to fuel wildfires across much of the United States, the Bootleg Fire in Oregon has become so intense that it is creating its own weather.
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