Not completely. There was a huge turnout but a lot of driven cars started leaving after noontime to avoid the weather.
It started to rain at about 2:30 PM just as the show awards were being announced.
There was a fairly severe thunderstorm with heavy rain, hail and wind over the MA turnpike starting just after the tollbooths in Lee that I went through at about 3 PM.
I hope it wasn't that bad at the track.