Warm Versus Cold Next Week for NYC, Boston and Philly

By , AccuWeather.com Senior Meteorologist
April 6, 2013; 12:56 PM ET
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A cold versus warm air battle zone is likely to set up into next week stretching from the Great Lakes to the Northeast.

Warmth will build over much of the Eastern states in the wake of a southern and coastal storm this weekend. However, there will be some resisting cold air.

A frontal zone is likely to wobble from north to south and back multiple times across the northeastern quarter of the nation this weekend through next week.

Areas south of the front will surge into the 60s and 70s during multiple days with sunshine. However, areas north of the front will stew around in the 30s and 40s. In some cases, the stubborn chilly air will be accompanied by clouds, rain, fog and drizzle.

At times the frontal zone will wander to near the U.S./Canada border and on other occasions to near or south of the Mason-Dixon line and perhaps part of the Ohio Valley.

The front is projected to lift northward over the weekend, so that most areas get at least one weekend day of warmer weather. northern and eastern New England may struggle with cold winds for a time on Saturday.

However, next week the front will sag southward on one or more occasions, since the jet stream will slip back to the south for a time.

Throw in the cold Atlantic Ocean, and any breeze off the water would also come into play. The chilly flow may not necessarily be limited to areas right along the coast, but through part of the eastern slopes of the Appalachians.

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Meteorologists sometimes refer to this as a back door cold front. However, in this case, it is the same front that just shifts position from one day to the next and can make for some very challenging temperature forecasts.

It is possible that a 20- to 40-degree temperature contrast sets up over the same number of miles at the local level.

Warmer days are ahead for the Great Lakes and Northeast moving forward through April. However, it is the speed and consistency at which some locations get there that is questionable.

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