Maybe I should correct my earlier comment. I was looking at the whole, rain, cluster, bees wet, etc., when I said no it never happened to me. Certainly I have had a swarm leave after hiving it.
We've all had swarms leave on us Mike. If you read the story and its particulars, that is what I am asking, if what I described has ever happened, like it happened to me or something similar.
It was a neat occurrence, something I haven't seen before. It was obvious that they tried their best to come back to the set up they swarmed out of as they wound up a mere 6' from making it back in before the rain literally plastered them to the concrete driveway.
With most of my set ups the bottom boards are stapled to deeps or mediums, mostly deeps, so I don't use queen excluders.
Because of the rain the past two days I really didn't get the chance to place a brood frame in this hive to anchor them, not that that always works but usually so.
Between rain storms they decided to swarm out, they had an agenda that I didn't expect quite frankly.
If you have the time and your equipment is not stapled together like mine, I agree the QE is a good idea Kathy.