2 years ago, I set out for work on a cold winter morning. The temp was about 0 farenheit, and it had snowed 4-6" the night before. My bike had Nokia studded tyres, and I was dressed warmly, but it was windy. Crossing a bridge on my commute, a 60 mph crosswind blew me off the bike, and I had to walk the next 1/2 mile or so using the bike for support in staying upright. I left the bike at work that evening, then took the bus home.