What is a weather phenomenon that is almost entirely unique to North America and is nine letters??

Question

Please help!!!

Thanks :D

Answer 1

Supercell is the only thing I can think of, it's a a severe thunderstorm with a deep, continuously rotating updraft, they are most frequent in the Great Plains of the United States. So it could be an answer, if it is a crossword or something, do you have any of it's letters?

Answer 2

TORNADO!!!! :D

Answer 3

Hurricane

Answer 4

Not tornado, tornadoes. It's nine letters, and it's better than the only alternative (supercell, which frequently occur elsewhere because they're more frequent than tornadoes)