Blizzard, bomb cyclone
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Those wind gusts could blow heavy snow around, reducing visibility to less than a quarter of a mile in many warning areas. More than 9,000 flights within, into or out of the US are delayed Sunday,
A "bomb cyclone" is intensifying severe winter weather for millions of people across the U.S. The system is expected to knock out power and disrupt holiday travel.
Weather forecasters predict an onslaught of winter storms across the East Coast and the Midwest.
A strengthening bomb cyclone barreled across the northern U.S. on Monday, unleashing severe winter weather in the Midwest as it took aim at the East Coast.
In Iowa, blizzard conditions eased but high winds were still blowing fallen snow across roadways, keeping more than 200 miles of Interstate 35 closed Monday morning. State troopers reported 193 calls for service from Sunday morning to Monday morning.
The Ottawa and Montreal areas could see up to 15 millimetres of ice accretion from freezing rain, starting Monday and ending Tuesday evening. Southwesterly winds of up to 70 km/h are also expected, with winds of up to 90 km/h in Montreal and the western parts of the island.