The snow we just had in Minnesota was of the light dry variety due to the low temperatures, but there was up to two feet of it, and more in drifted areas. The wind speeds were 35 to 50 MPH. It is not all that unusual for the HHH Metrodome roof to collapse; it has happened four times now. The roof membranes are worn out and need to be replaced. Ziggy Wulff's prayers answered?

The collapse was caught on video from the inside:

http://blog.seattlepi.com/zennieabraham/archives/231543.asp