Early Saturday snow falls on Long Island

24 Jan 2015 | Author: | No comments yet »

‘Precipitation-Maker’ To Bring Weekend Wintry Mix to Northeast.

HARTFORD, Conn. (AP) — A fast-moving coastal storm expected to blast several major cities along the Northeast’s busy Interstate 95 corridor this weekend has begun with sleet and snow. EST, shows a storm system over the Atlantic Ocean with a back-end surface trough that is causing some snow to develop across parts of southern New England. The wintry mix, set to affect more than 6 million people, is due to begin Friday night in areas stretching from West Virginia to New York City, according to Weather.com. The National Weather Service said late Friday that Maryland, Delaware and southern Pennsylvania were experiencing sleet, Washington, D.C., had rain, and West Virginia was getting snow.

A larger developing storm system is located just due northwest of the Gulf of Mexico with a large precipitation shield over most of the Lower Mississippi River Valley. This swath, including Washington, D.C., and Philadelphia, can expect snowfall until Saturday afternoon, at which point the snow will head north through Boston and up to northern New England. Today (Saturday): The bulk of this storm is done, but it’s still spinning just off to our east during the early morning, so some impacts are likely to remain. In and around Pittsburgh, KDKA Meteorologist Jeff Verszyla says we could see between a coating to an inch overnight and into the wee hours of Saturday morning. There will be higher amounts as you get further south and east. “Snow showers developing earlier and working their way to the north out of West Virginia and primarily encompassing our southern tiered counties – Washington, Westmoreland, Greene and Fayette counties – and then working its way through the southern and eastern portions of Allegheny County, trying to nose their way toward parts of the North Hills with limited success,” said Verszyla. “What’s going to occur is, this line is going to reach a point and it’s not going to go any further north. “So the northern tier of counties – Beaver, Butler, Lawrence, Mercer, Venango counties – may see little or nothing at all in terms of any flakes flying tonight,” he added. “Most of it will be south and east of the City of Pittsburgh and it’s mainly going to be confined to the overnight period.” The Maryland State Highway Administration warned motorists that travel may become hazardous.

These slick spots are most likely in our colder suburbs, especially from Loudoun County through the northern half of Montgomery County and to the northwest. However, pockets of iciness are even possible closer to town 11:15 p.m. final update: If you’re longing for snow after all this rain and mixed precipitation, you probably don’t have to wait long.

As the storm sweeps northeast along the Eastern Seaboard, it is expected to drop 2 to 4 inches of snow and ice in Philadelphia on Saturday morning before turning over to rain. Tonight’s American models continue to show the likelihood of a strong clipper system dropping a swath of snow across the area starting Sunday night. After a relatively tame start to the winter, Connecticut has plenty of salt and snow-treatment chemicals stockpiled around the state and a fleet of 632 plow trucks ready to go, Department of Transportation spokesman Kevin Nursick said. Even those at 32 aren’t generally seeing much if any icing. 7 PM Dulles sounding is isothermal (constant temperature), 1 deg C, in the lowest 8,000 ft.

With surface temps 1-3 deg C above freezing area-wide, and a south wind, it would seem that ice – from here on out – will be a diminishing proposition. Some remain even in NW D.C. several hours after the sleet stopped. 7:45 p.m. update: For the immediate metro area, there are signs the snow and sleet excitement is waning as precipitation shifts to more sleet and rain. The short range HRRR model shows temperatures aloft below, looking at a current panel and a forecast for 8 p.m. 850 mb (5,000 feet) temperatures are often used as a proxy for simple forecasting of snow vs something else. As temperatures continue to dip through the low-and-mid 30s across elevated area north and west over the next few hours, deteriorating conditions are possible. Bridges, sidewalks, and some streets may become slippery in places above freezing as well. 5:35 p.m. update: Mixed precipitation has pushed north to the Maryland/Pennsylvania border.

Based on reports, the most common type currently falling is sleet, with rain also mixed in to varying degrees for much of the I-95 and southeast area.

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