Fire tornadoes are most often sighted in California.
In 2020, for the first time in its history, the U.S. National Weather Service issued a tornado warning for a pyrocumulonimbus created by a wildfire near Loyalton, California, capable of producing a fire tornado.
One of the largest firestorms ever created was in Hamburg, during WWII. Called the Hiroshima of Germany. βIt swept people off the streets like dry leaves.β Known as Operation Gomorrah.