Northeast Flood Risk, Wintry Mix Continues

By , Senior Meteorologist
March 31, 2014; 5:18 PM ET
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A slow-moving storm system will continue to raise concerns for flooding across the Northeast with snow and ice to close out March.

Soaking rain -- combined with melting snow around the Appalachians -- on Saturday through Saturday night led to rapid rises on some creeks and smaller rivers across parts of the Northeast.

The level on the Millstone River at Griggstown, N.J., soared from 4 feet during the midafternoon of Saturday to around 13 feet by Sunday morning, leading to moderate flooding.

The soaking rain from Saturday night continued to press from eastern New England to Nova Scotia through Sunday, but dry and sunny weather is not following the rain.

Sunshine will finally return to the mid-Atlantic on Monday, while some rain lingers over New England.

Pockets of heavier rain could lead to flash flooding in low-lying and poor drainage areas, as well as along smaller streams.

Northeast Interactive Radar Winter Weather Center
Latest Flood, Winter Weather Warnings, Advisories

Even where flash flooding does not ensue, the rain will cause slower travel for motorists and possible flight delays.

The concern for flooding will not end when the storm and its rain finally depart. Levels on larger rivers will continue to rise during the next few days as runoff from the weekend rain flows downstream.

"Generally the larger the river, the longer it takes for high water to cycle through," stated Senior Meteorologist Alex Sosnowski.

Near to minor flooding is anticipated on the Susquehanna, Hudson, Connecticut, Delaware and Merrimack rivers, according to the National Weather Service's Advanced Hydrologic Prediction Service.

Some snow and/or an icy mix will tend to slow the runoff across the interior from the central Appalachians to northern New England.

Wet snow earlier on Sunday whitened grassy surfaces along Virginia's I-81 corridor and even made an appearance southward to Greensboro, N.C.

Snow and sleet returned to Washington, D.C., on Sunday and was falling heavy enough to cause a slushy coating on some roads across the northern and western suburbs.

A band of heavy snow setup on Sunday evening from Utica, N.Y., to Harrisburg, Pa., accumulating a foot just north and east of Binghamton, N.Y.

The snow and ice will have a difficult time accumulating on roads during the day on Monday unless it falls heavily and can overcome the effects of the stronger late-March sun.

Such heavy snow is currently underway across northern Maine.

Strong winds on the back side of the storm will also continue to howl from western North Carolina to central Pennsylvania, including in Roanoke, Va., Washington, D.C., Hagerstown, Md., and Harrisburg, Pa., through Sunday evening.

Gusts past 40 mph threaten to cause some tree damage and power outages and could overturn high-profile vehicles.

Drier weather will finally return to all of the Northeast on Monday night as the storm departs and opens the door for April to start on a milder note.


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