"Boom!" I thought.
Then, after a second, I thought "Please don't erupt."
"Potentially active" is a phrase most of the United States save the Northwest, Alaska and Hawaii never has to deal with. (Northwesterners, Alaskans and Hawaiians have to deal with actually active volcanoes, too.)
So my first thought seemed, shall I say, asking for trouble. Trouble recanted, I hope.