It’s about more than 1,000 flights at Chicago O’Hare, more than 800 at LaGuardia in New York, 650 at Boston Logan and 600 at Newark Liberty in New Jersey. Schools will be closed Tuesday because “we already have 12 inches of snow on the ground and up to 6 more inches coming,” Mayor Marty Walsh said in Boston. The big icy storm left victims: two people were killed in a serious crash on Interstate 95 in New York; a Toledo, Ohio, police officer, died of a heart attack while shoveling snow from his sidewalk Sunday; two people were killed in storm-related car crashes in Nebraska on Sunday; a Massachusetts woman was struck and killed by a snowplow Monday; two Indianapolis men were killed in a crash on icy Interstate 74 in Shelby County, Indiana and a 67-year-old woman died of exposure Sunday night in a yard in Cass County, Iowa, where the wind chill was 9 degrees below zero. New York was expecting 3 to 5 inches of snow by the end of Monday but according The Weather Channel the totals were hard to predict.