To determine the 30 most destructive wildfires in the U.S. this century, 24/7 Wall St. reviewed data on wildfires that burned 100,000 acres or more between 2000 and 2021 from the National Interagency Fire Center’s Fire and Aviation Management Web Applications Program, as well as additional data on active and partially contained fires in 2021 from the Fire, Weather, and Avalanche Center. Data on active fires is current as of mid-day July 22.
The number of large fires, which refers to the number of fires that burned more than 100,000 acres, also came from the NIFC. Larger fires often split into several other smaller events, causing their own pattern of destruction. Fires initially part of larger incidents, as well as their aggregate fires, have been indicated.
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