I am in the Denver area right now, I was here last night, and this is the best I can give you.

1. The wind. The front range of Colorado gets wind like you wouldn't believe somewhat regularly, especially when a storm is moving in. It was somewhat windy in Boulder last night, but I can imagine sustained winds in the 40-50mph range out by DIA, with much higher gusts.

2. The cold. I have seen so many glass windows break here when it was cold outside. I remember a friend of mine knocking on a window during a cold 5 degree Fahrenheit night, and a slight knock broke the window open.

We had some light snow, but by light I mean 1-2 inches in about 30 minutes. Then it stopped. No ice pellets.

I really have no idea why this happened, but maybe some crazy effect from the wind/cold.