In pictures: Monster winter storm slams the US 42 photos In pictures: Monster winter storm slams the US Firefighters shovel snow during a winter storm in Boston on Sunday, January 25. The region received about 0.40 inches of ice accumulation, which is well above the 0.25-inch threshold to be considered an ice storm. Andrew Nelles/The Tennessean/USA Today Network/Imagn Images Snow piles up on the windshield of a vehicle in Cincinnati on Sunday. Andrew Dolph/Akron Beacon Journal/USA Today Network/Imagn Images Ronald Reagan Washington National Airport in Arlington, Virginia, is largely empty Sunday. Bruce Newman/The Clarion-Ledger/USA Today Network/Imagn ImagesHayward said this storm was worse than Mississippi’s historic 1994 ice storm, when outages took 23 days to restore.