I did some consulting work at Homestead AFB, a year or so after it got destroyed by the hurricane. We had a briefing in the early morning (7 am or so) and the guy said to be back inside or off the facility as a thunderstorm would be hitting at 4:38 pm. (Or whatever - but down to the minute).
I said “are you sure it’s not 4:39” with a chuckle. He stared/scowled at me and said “4:38”.
I seem to recall that he was off by a minute or so when it did hit (and it hit hard!), but still wonder how he was able to call it that close from 10 hours earlier?
It can come down in freakin’ Buckets.