In advance of the storm, New Jersey’s governor, Phil Murphy, declared a state of emergency, closing all six Covid-19 vaccine mega-sites, state offices and New Jersey transit. The storm threat prompted similar closures to vaccine sites in New York City.
The flakes, which began late Sunday night will pick up intensity throughout Monday, and snowfall rates could get as high as 1 to 2 inches per hour. The storm could drop up to 21 inches by the time it ends Tuesday morning. If that happens, it will be the most snow New York City has seen since the January 22 to 24, 2016 storm that dumped 27.5 inches over a two-day period. It would also cement this storm as one of the most prolific winter storms for the city, placing it in the top 10 of largest snowfall totals on record.
Snow began to fall in Washington, DC, on Sunday and then transitioned to a sleet and snow mix, coating roadways with ice adding to driving danger. For a brief period Monday morning, the snow will become rain, changing back to snow by the afternoon and into the night before ending Tuesday morning. The district could end up with a total of 5 to 7 inches, the most in the last two years.
A similar combination of rain and snow is expected in Philadelphia, where snow began Sunday evening. It will briefly change over to a rain and snow mix in the morning. A switch to all snow is expected by midday Monday. A final total expected there will be around a foot.
The placement and track of this multiday storm will play major role in the snowfall totals across the Northeast. A storm close to the coastline will produce more rainfall, while one too far offshore will reduce moisture and lead to less snowfall.
Models suggest this nor’easter should be in the sweet spot for abundant moisture that could lead to significant snowfall. Another important factor has also been in play, increasing the confidence for the impacts of the storm.
According to CNN meteorologist Tom Sater, this storm is tapping cold Canadian air. “A strong high pressure system is in place over southeast Canada, pushing plenty of cold air far south enough and lasting long enough to get the kind of snowfall being forecast.”
Nearly 75 million across a dozen states are under some kind of winter watch or warning from a storm which had its genesis in the Midwest Saturday. While there, the storm dropped more than foot of snow in Milwaukee.
Major hubs such as LaGuardia, Newark and JFK are reporting 70% to 80% of Monday’s scheduled flights as canceled.
Correction: An earlier version of this story had the wrong first name for New Jersey Gov. Phil Murphy.
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