For those of you who were in Minneapolis on December 17, 2010, you'll recall that 17 inches of snow in a short period caused the Metrodome (home of the Vikings) roof to collapse:
I was scheduled to fly that day, cancelled, and barely made it back to my crashpad with 4-wheel drive pickups and 18-wheelers stuck all over the sides of the road.
After 7 months the roof is finally replaced:
Metrodome roof up again, nearly ready for Vikings | masslive.com