Living on the Lake Michigan shore, I’ve seem my share of them. We got caught in one that we saw coming even though weather radar never showed it. We had the sails down, and made it inside the breakwater before it hit. I had to do a 360 waiting for a sportfisherman exiting the marina when it finally dumped. It lasted all of about 5 minutes. We were soaked, my shoes and wallet were drenched and didn’t dry out for 3 days. By the time I got to my mooring, the sun was out again.
You can see them coming. Usually there is a little time to prepare, but normally not enough to outrun them in a sailboat. I really don’t like lightning, especially when I have 40 feet of aluminum sticking up in the air and nothing taller nearby.