Las Vegas, the gambler's paradise in the desert whose average high sits at or above 100°F for three months of the year, is getting ready to see a rare and potentially dangerous snowfall on Tuesday and Wednesday. The city could see up to three inches of snow on the ground by New Year's Day.

A rare event known as a "heat burst" caused temperatures in Russell, Kansas last night to soar from 85° to 93° in less than an hour. To the east, Salina hit 95° at 1:00 AM. These phenomena usually occur in unpopulated areas, so not many people have heard of them. So, what is a heat burst, anyway?