Could be. It would be a massive amount of gas to make an explosion this big. The shock wave was tremendous and I am probably 12 miles away. I’ll check for sure.
if I am not mistaken propane is heavier than air. So, if there is a leak in the basement, it would just collect there till something set it off.
Comment from DMN:
“I live on county road 409, literally 1-2 miles east of there. Approximately 6 minutes after the explosion, there was smoke all around my house with a VERY STRONG odor of gun powder. Undoubtedly gun powder... “