Light snowfall and sleet overnight in parts of Connecticut, New Jersey, New York was expected to make roads icy for Monday morning commuters, forecasters said.
A winter weather advisory issued by the National Weather Service was in effect until 10 a.m. Monday for parts of northeastern Pennsylvania and until 11 a.m. for parts of New Jersey, as well as the Lower Hudson Valley in New York.
Parts of Connecticut may also be affected, including northern areas of Fairfield, New Haven and northern Middlesex Counties, the agency said.
In northeastern Pennsylvania, forecasters predict up to four inches of snow and sleet, which they said would turn into a light glaze of ice accumulation Monday morning. Many parts of New York, New Jersey and Connecticut were forecast to receive less than an inch of snow.
The snow was expected to transition to freezing rain overnight, creating hazardous, icy conditions, particularly on untreated roads and in higher elevations. The morning commute on Monday could be especially dangerous, with icy roads posing significant challenges for drivers, forecasters said.
Ice accumulations are forecast to range from a light glaze to a few hundredths of an inch across most areas, while western Orange County may get up to an inch of ice. Higher elevations in the Poconos of Pennsylvania will get the heaviest snow and ice accumulations on Sunday evening, potentially up to four inches.
Mike Kistner, a forecaster with the National Weather Service in Binghamton, N.Y., said the forecast for freezing rain and ice is what pushed the Lower Hudson Valley and parts of New Jersey to be under a winter weather advisory, though the snowfall should be light.
While the cold air and below-freezing temperatures Monday morning will likely keep roads icy during the morning rush, Mr. Kistner said as it heats up later in the morning and throughout the day, conditions should clear. Bridges and overpasses may remain icy even if the main roads are wet, he added.
Jennifer Givner, a spokeswoman for the New York State Thruway Authority, said workers were ready to clear the roads and have pretreated them for freezing rain, though she warned drivers to take it easy on Monday morning.
“Give yourself some extra time in the morning,” Ms. Givner said. “And just slow down. I think that’s always the best way to travel in this weather.”
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