How Intense and Extensive Were the Twin Towers Fires?
The plane crashes resulted in significant fires in both Towers, at least for the first few minutes after the crashes. The fires in the North Tower were considerably more extensive than than those in the South Tower. As time progressed the fires in at least the South Tower appeared to diminish greatly in severity. This was probably due to most of the jet fuel being exhausted within a few minutes of the impacts. Since kerosene (jet fuel) has a low boiling point and a low flash point, most of it would have evaporated and caught fire quickly.
