US cyclo-cross nationals: surprise January thaw creates muddy mess

It wasn't supposed to be muddy for the 2012 US National Cyclo-cross Championships, held January 4-8 in Madison, Wisconsin. The championship has moved to Madison for 2012 and 2013, where the average high temperature is normally just 28°F (2°C) at this time of year. But three days of unseasonably warm weather, with highs in the 40s F (4.5°C), and the 4,500lbs of magnesium chloride ice melt the promoter dumped on the course to melt a slick layer of ice, warmed the top layer of the frozen ground to create a muddy mess.