The weather service might upgrade the watch in parts of South Jersey on Tuesday afternoon, said Lance Franck, a meteorologist in Mount Holly. More than 2,600 flights were canceled, according to FlightAware. But computer models tend to underestimate how far west the snow reaches in a storm like this, the National Weather Service said, Syracuse could get more than now forecast.
Huge snowflakes fell to the ground swiftly in eastern Pennsylvania.
This week's storm is not forecast to have the hurricane-strength winds whipped up at times by the storm last week, but forecasters say strong gusts of 60 miles per hour (96.56 kmph) and accumulated snow will still be sufficient to knock down more power lines.
Generally 12 to 18 inches of snow is expected in the southern Poconos and northwest New Jersey, 8 to 12 inches in most of southeast Pennsylvania and central New Jersey, 4 to 6 inches in the immediate Philadelphia area, and 6 inches or less on the Delmarva and southern New Jersey.
This is the second winter storm in five days to impact us, and the second coastal storm in five days. About 300 crews were pre-treating the roads ahead of the storm. The heaviest snow will fall between 10 a.m. and 4 p.m.
A few inches of additional snowfall may accumulate in parts of MA, southern New Hampshire, Vermont and northern NY.
There's another 1 to 3 inches of snow forecast for Thursday plus another 1 to 3 called for Thursday night and 1 to 2 inches possible on Friday.
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Public schools in Boston, Chelsea, Revere and Somerville will be closed as heavy winds and snow are expected to hit the area, the Boston Globe reported. Furthermore, I like to sit back and analyze how my snow forecasts could go wrong due to storm track wiggles, dry slots, etc.
States of emergency were declared in parts of Massachusetts, Pennsylvania and Maryland on Saturday, and Sunday New York Governor Andrew Cuomo declared a state of emergency in Westchester, Putnam, Dutchess and Sullivan counties.
"Thundersnow", as the phenomenon is known, is snow paired with lightning and resulting thunder.
The Wildcard: Some short-range computer models show a layer of warmer air in the CT River Valley (from Enfield to Hartford and down Rt 9 to Essex).
The city of Philadelphia could see up to 8 inches of snow.
As for ground travel, New York City's Office of Emergency Management issued a hazardous travel advisory urging New Yorkers to "take mass transit if possible and allow for extra travel time".
Amtrak continues to operate on a modified northeast schedule between Washington, D.C. and Boston.