We had one years ago at the outdoor Pompano Beach amphitheater (I loved that place; it even allowed for a mini-Shakedown) where Doppler showed an angry red blob of tropicalness coming our way.
And sure enough, we got strong winds and brief but torrential rain pouring in horizontally. The stage was getting saturated. I realize I could be wrong here, and there are those among us who are almost Renaissance in their expertise on everything to correct me, but my understanding is that large amounts of water don’t mix well with electronics.
There may be some truth to that, as I recall the show (a recreation) being played as one long set. A few songs were skipped but good value was delivered to a drenched audience.
That’s my story. Those were good times.