That is surprising, since the asteroid's distance from the sun means it should lose about 1 metre of ice each year. (newscientist.com)
I think that it is in no way unexpected that we'd have a little more ice this year then last. (dotearth.blogs.nytimes.com)
And other parts of the country more used to challenging winter weather have been getting an extra dose of wind, snow and ice this year as well. (scientificamerican.com)