 The National Weather Service issued a snow squall warning Thursday morning for portions of Arizona's Yavapai and Coconino counties.NWS predicted 1-2 inches of snow per hour in gusty winds up to 35 mph and urged people to delay any travel until the snow squall passed. The NWS says that although snow accumulations during a snow squall are typically an inch or less, the added combination of gusty winds, falling temperatures and quick reductions in visibility can cause extremely dangerous conditions. For motorists, forecasters say more bad weather is in store after storms that battered nearly every corner of the United States. The Northeast is cleaning up after drenching rains, flooding and fierce winds that stranded vehicles, shuttered schools and knocked out power.