The advisories are in effect from 6 p.m. Monday, Dec. 16 until 6 p.m. Tuesday, Dec. 17 for the counties north of New York City and Long Island shown in purple in the first image above.
Those traveling through the areas covered by the advisories should plan on slippery road conditions, the National Weather Service said, noting that hazardous conditions could impact the Monday evening and Tuesday morning and Tuesday evening commutes.
At this time, about an inch of snowfall accumulation is expected for areas south of I-287 in New York and the Merritt Parkway in Connecticut, and up to 2 inches north of those roadways up to I-84.
Areas north of I-84 and farthest inland, especially west, could see up to 3 inches.
Areas in pink will see some ice accumulation during the storm and areas in dark pink could see significant ice accumulation of up to around 0.20 inches. (See second image above.)
Clouds will roll in on Monday morning, with the chance for snow and a wintry mix starting after nightfall Monday on a day in which the high temperature will be in the low 30s.
There will be a wintry mix with snow at times overnight into Tuesday.
The chance for sleet and freezing rain will continue until around 9 a.m. Tuesday south of 1-287 and the Merritt Parkway when the temperature is expected to rise to the mid 30s.
North of those areas, the chance will last through the afternoon as the high temperature will struggle to get above 33 degrees. The high temperature will be in the upper 30s farther south.
Skies will gradually clear Tuesday evening and overnight, leading the way to a mostly sunny and cold day on Wednesday, Dec. 18, with the high temperature in the low 30s.
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