Originally Posted by
Ernie P.
Interesting... You could have had five planes, rather than four. Although I don't know that "tempest" involves rotation, it's still a storm or weather event. An unusual question. Thanks; Ernie P.
a violent windstorm, especially one with rain, hail, or snow.
Well, the definition I found doesn't specify rotation, so it would be safe to say that some Tempests fit the clues whereas others do not.