I was on the way to work from lunch, in 2006 and had to sit through 3 cycles of traffic lights. Why? The temperature was 80+ degrees and I stop at the light. Suddenly, it was like someone dropped you in the Antarctic. I immediately close the moonroof and windows. The guy next to me wasn't so "quick". After 5 seconds, the heavens dropped hail stones the size of marbles. You could NOT see in front of your car. It was hailing like this for about 4 minutes. No rain, just hail.
The hail stops and you see the most wicked Cumulonimbus (Thunderhead) off to the East. Rumor is, a tornado touched down in Detroit from the same storm. Noone knows for sure, but the cold updraft was something I learned while studying Meteorology.
Rip, next time you see a wall cloud, try not to gaze.

Good to see the Nelson family made it out ok though. Prayers for the victims have been said.
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