Yesterday evening on highway I-94 in Michigan City, a 46-car pileup began after an unpredictable wave of lake-effect snow came onto the road, startling drivers and causing them to swerve into each other. The gust of precipitation, which is brother to the terrifying menace "thundersnow" and has been known to white out areas of the Midwest, fell onto the highway that connects Michigan to Montana. Three people have been pronounced dead.