Winter Storm Setting Up Inland, Winter Storm Watches, Advisories
& Ice Storm Warnings Thursday Friday
Winter Storm Watches are posted for Upstate NY west of I-87 including the Catskills. We also have winter storm watches posted for much of Northeast and Central Pennsylvania. Winter Weather Advisories are posted for Southern Central and the rest of Eastern Pennsylvania as well as much of the western and northwestern New Jersey counties.
In the areas on the edge of the watches and warnings we have advisories up mainly for a minimal amount of snow followed by some ice and then a change to rain. Snow forecast amounts increase in the Winter Storm Watch areas across Central to Northeast Pennsylvania and points northward where we see 4 to 8 inch amounts in Pennsylvania and 8 nches or more across much of Upstate NY.
Ice accumulation of range from a few hundreths of ice accretion to as much as a quarter to a half inch in parts of Northeastern Pennsylvania and also in areas in the Central Appalachians. For the remaining areas along the coast and just inland of the coast it will be mostly rain with perhaps a little snow or sleet at the start.
Meanwhile there are no issues for today. Skies in the Northeast on the satellite are clear but we do see the begginings of clouds from the major storm in the Plains and the cold front which extends like a long arm with rain from parts of the Ohio Valley to showers and thunderstorms moving across the Gulf states. We will see sunshine followed by some arriving high clouds later today. Most highs will be in the 30s to some lower 40s.
The primary low in the Northern Plains simply remains too strong and that allows warmer air to move northward and change snow to rain along the coast. We will start to see precipitation develop from southwest to northeast Thursday reaching Southeast Pennsylvania by daybreak, the areas surrounding NYC around 1pm and into Southern New England by 7pm or so. Snow/sleet goes to rain along the coast. Some ice is possible Thursday morning in Western New Jersey, Southeast and South Central Pennsylvania as precipitation arrives a little faster and while it is still cold enough. This storm redevelops along the coast of Delaware and then “hugs” it to an extent. Rain will be heavy at times later Thursday into Thursday night. Winds will also pick up along the coast to gale force. Coastal flooding should not be a big issues since we are mid cycle in the moon phase.
Rainfall amounts will be in the order of 1.50 to 2 inches in many places as this system is slow moving and loaded with moisture. There is a chance we could see rain change back to snow before ending Friday night across interior Southern and Southeastern New England. Weather conditions improve for the weekend which will be cold but dry.
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