Firestorm 7 : Violent convection caused by a large continuous area of intense fire, often haracterized by destructive violent surface updrafts near or beyond the fire perimeter and sometimes by tornado like whirls
Air National Guard ANG website (and US Forest Service website), Glossary of wildfire terms, Except where noted, terms are taken from: Fireline Handbook 1998, National Wildfire Coordinating Group NWCG Handbook 3 (PMS 410-1), Glossary of Wildfire Terms (additional glossary Sites included on firefighting terms and firefighting equipment), Air National Guard, The Pentagon, USA 1998. http://en.wikipedia.org/wiki/Glossary_of_wildfire_ terms, (For Fr - Amer) {2}