In an outer rain band, a lightning strike in Jacksonville killed one person.
Wider rain bands can form behind cold fronts, which usually have more stratiform, and less convective, precipitation.
"In particular," he said, "we are seeing how the rain bands develop and change in a huge storm."
This damage was possibly caused by a tornado that formed from one of the outer rain bands.
The outflow became well-established in all quadrants as deep convection increased into a prominent rain band.
"Heavy rain bands sat over the same areas for hour after hour."
Three people were killed in a plane crash from Gamma's outer rain bands; it was thought that the weather was a part of the reason.
On its landfall, associated rain bands were deemed "not very impressive", although there was a rapid increase in thunderstorm activity east of the center.
Light rain with moderate winds were reported throughout Taiwan, as the outer rain bands of the system brushed the island nation.
Although the storm did not directly impact to the Philippines, its rain bands caused considerable damage to the nation.