Coastal storm expected to worsen in Northeast

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.BOSTON (CBS) – It won’t be a blockbuster storm by New England standards, but it WILL be the biggest event of the season thus far for many folks, especially north and west of Boston. 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.

The temperatures are going to be very marginal at multiple levels of the atmosphere, so a degree or two here or there could mean the difference of several inches of snow versus a mix and rain. 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. As has been the case with most of our storms so far this winter, there is no real significant source of cold air in place, no cold high pressure anchored in Canada. The biggest snowfall amounts are expected in southern New England, but forecasters warned that temperatures hovering near freezing could make for slippery driving conditions across the region. “It’s kind of the first one, so it’s a good thing it’s happening this weekend,” weather service meteorologist Bill Simpson in Taunton, Massachusetts, said Friday. “If this happened during a weekday, it could be really slow and messy.” A winter storm warning was issued Friday for a large portion of central Pennsylvania ahead of the storm. 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.

Photographer: Pete Marovich/Bloomberg Parts of interior Pennsylvania and New England may get as much as 8 inches (20 centimeters) of wet snow from the storm that will deposit 2 to 4 slushy inches on New York, Boston and Philadelphia, Brian Hurley, a meteorologist at the U.S. 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. 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.

There will likely be a quick burst of snow on the front end of this storm, so nearly everyone will see snow at the start with the exception of the Cape and Islands. 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. We’ll have more tomorrow. 10:45 p.m. update: Despite rain taking over for most of the late evening, some snow and sleet is still falling in places like Purcellville, up the spine of the hills around there, then across the Mason Dixon area and northward.

Winds will begin to veer to a more north-northwest direction, drawing in colder air and changing any rain and mix over to all snow from north to south. 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.

Another area of heavier stuff is working its way up from the southwest, and will sweep through in the coming hour or so, perhaps with less snow as temperatures aloft warm. 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.

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.

Here you can write a commentary on the recording "Coastal storm expected to worsen in Northeast".

* Required fields
All the reviews are moderated.
Twitter-news
Our partners
Follow us
Contact us
Our contacts

About this site