I live in TN. They are my friend's hives, so I am not a regular part of their upkeep, but I try to make it out to help him with them (so I can learn a few things and because I find it all ridiculously fascinating) every time my schedule lines up with his hive maintenance times.

I've been busy so it has been about a week since I talked to him, I am not sure if he has had anymore problems or if he figured out the cause yet.

Both days it was when the weather made unusual rapid mid-day change from hot, sunny, and calm to cloudy, rainy, and extremely windy. I can't help but wonder if that is a non-causal coincidence, or if the rapid weather change somehow threw them off.