Wednesday update on snow total forecasts, timing for risky storm

Cheryl Sanders
March 21, 2018

"During the final week of March, the UK's weather is likely to stay changeable, with showers and rain at times, interspersed with drier and brighter interludes".

Temperatures today will climb to the mid 30's so snow should melt off many surfaces by the afternoon.

Meanwhile, a Winter Storm Warning is in effect until 8 p.m. for the Fayette and Westmoreland Ridges.

Freezing Siberian air is also expected to sweep in over the bank holiday weekend - but forecasters say there is still a lot of uncertainty over how cold it will actually get or how much snow the United Kingdom will see.

After a high in the mid-50s and morning showers Tuesday, Wilson County will see high temperatures between 40 and 44 degrees on Wednesday with rain that could change over to sleet or snow after sundown. This will not likely be a constant snow for most of us. The snow will again be heavy, wet and a challenge to shovel.

When all is said and done, the greatest snowfall accumulations will be in Virginia and the higher elevations.

Most of the D.C. metro area will get somewhere between 3 and 6 inches.

Tonight: Snow tapers early. Snow will spread east to west across IN this evening and overnight. Highs during the day will top out in the middle 30s.

Wednesday: Mainly snow with some rain in Southern Maryland. Forecast models are not in agreement, but the National Weather Service's latest projections call for accumulations of 8-12 inches in most of South Jersey and western Chester County to 12-18 inches around Philadelphia and points north. Winds also are expected to be a problem, particularly at the Shore.

Thursday: Mostly sunny with a high near 45 degrees. Winds will be between 15 and 25 miles per hour, but the highs will be between 38 and 44 degrees. Temperatures for many overnight struggled to even get below freezing so that will make it tough initially for any wintry precipitation to accumulate on roads, especially treated ones.

Maryland crews are clearing stormwater management systems of debris to enable positive drainage and preparing chain saws, chippers and generators, and road closed signs. Visibility may be reduced in spots.

If the bleak forecast comes to fruition and causes any school delays Tuesday or Wednesday, they will be listed on WTOP's Closings and Delays page.

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