Feb 28, 2012; 2:22 PM ET
Snow is forecast to blanket the countryside Wednesday into Thursday in portions of New England and eastern upstate New York. (Photo by Dennis Tangney/Photos.com)
The same storm delivering a Leap Day blizzard to portions of the northern Plains and the Upper Midwest will push snow, ice and rain into the Northeast beginning Wednesday.
The storm will result in slow travel for many, shoveling snow for some and umbrella weather for others.
During Wednesday morning, a wintry mix will break out across western and central upstate New York, part of southern Ontario and portions of central Pennsylvania. The wintry mix will constitute not only areas of snow and rain, but also areas of some sleet and freezing rain.
Slippery surfaces are possible in this area due to the early start of the wintry precipitation Wednesday. More widespread problems will develop farther east later Wednesday into Thursday.
A larger snowfall forecast map is available on AccuWeather.com's Winter Weather Site
According to Expert Senior Meteorologist Brian Wimer, "During Wednesday midday and afternoon, the time of the day and the intensity of the snow and wintry mix will play a role on the condition of road surfaces."
Where frozen precipitation falls at a heavy rate, it will overwhelm the late-February sun effect and can accumulate on roads. This is possible in portions of New England, eastern upstate New York, northern New Jersey and northeastern Pennsylvania.
"Snow would continue to accumulate on non-paved areas regardless," Wimer said.
Soaking rain is in store for the mid-Atlantic, including from Washington, D.C., to Philadelphia.
A brief period of wintry precipitation is forecast in some of the northern and western suburbs of Philadelphia and within the New York metro area during the middle of the day Wednesday, prior to a change to rain. However, few road problems are anticipated due to the timing of the event.
This map shows the general weather conditions expected during the day Wednesday.
As the storm evolves, delays from fog and low clouds could be problem at the airports for a time from the south coast of New England to the coastal mid-Atlantic.
A delay in the changeover to rain by a couple of hours can result in greater accumulation and will depend on a mere couple of degrees not only at the surface, but up through several-thousand feet above the ground.
A very marked increase in accumulation is expected a few miles north on the Thruway from New York City to Albany and on I-91 heading northward through the Connecticut River Valley.
According to Senior Meteorologist Kristina Pydynowski, "The storm will continue or get a second wind later Wednesday night into Thursday."
From later Wednesday into Thursday, the southern edge of the snow and wintry mix area will erode northward, but only to a certain point.
If the storm behaves as expected, people from Albany, N.Y., to Rutland, Vt., Concord, N.H., Worcester, Mass., and portions of northern Connecticut could have snow up to their shins by Thursday midday or sooner.
The storm has the potential to be the biggest single-snow event of the season for the cities of Albany and Boston, which escaped the worst of the freak snowstorm of late October.
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