No Significant Fires 1-53 54-177 178-382 383-677 678+ Significant Fires by Fire Weather Zone ² 0 145 290 580 870 1,160 Miles ` Fire Danger in the Continental U.S. by Fire Weather Zone (1980-2014) A “significant fire” is defined as a fire which burned at least 10 acres. Sources: United States Geological Survey, U.S. National Weather Service December 2015 Nathan Lipson