**An impressive cold air mass with its origins over the Arctic reaches the eastern states early next week...snow on the table Great Lakes/interior NE US/New England**
Paul Dorian
An impressive cold air mass with its origins over the Arctic region reaches the eastern states early next week with temperatures potentially some twenty degrees below normal for this time of year. Map courtesy ECMWF, Weather Bell Analytics
Overview
There will be as many as three cold fronts to deal with in the northeastern part of the nation during the next week or so days, but the third system will be the most important and is destined to arrive late in the upcoming weekend. The first cold front comes through on Wednesday night primarily on the dry side and it turns cooler behind it on Thursday. The second cold front then arrives on Friday night likely producing some shower activity into the day on Friday. It is the third cold front that likely arrives later Sunday which will have the biggest impact with the coldest air of the season so far to follow for early next week. This cold air outbreak early next week may be accompanied by some early season accumulating snow across the Great Lakes and interior sections of the Northeast US/New England.
A deep upper-level trough of low pressure will develop over the southeastern part of Canada by early next week at the same time strong ridging pops out across the western states. Map courtesy NOAA, tropicaltidbits.com
Details
After a cool, dry day on Tuesday in the Mid-Atlantic region, it’ll turn a bit milder at mid-week ahead of the next cold frontal system. This front comes through on Wednesday night – likely on the dry side – and it’ll be followed by breezy and slightly cooler conditions on Thursday. Another cold front will approach the Mid-Atlantic region late on Friday and it can produce some shower activity from Friday night into Saturday morning across the northeastern part of the country. The air mass behind this second front will not be much different and high temperatures on Saturday should be near the 60-degree mark in much of the DC-to-Philly-to-NYC corridor.
Low pressure may accompany the strong cold frontal system late in the upcoming weekend and accumulating snow is on the table for northern New England and potentially some of the higher elevation locations of the interior Northeast US. Map courtesy NOAA, tropicaltidbits.com
By Sunday, a third in a series of cold fronts will be headed southeast across the Great Lakes and likely to arrive in the northeastern states by early Sunday evening. This frontal system will be accompanied by low pressure that likely moves in a northeastward direction from the eastern Great Lakes to the southeastern part of Canada. This cold front will usher in some of the coldest air so far this season with its origins over the Arctic region and temperatures as much as twenty degrees below normal in some areas to start the new week. The low pressure system that rides along the frontal boundary zone can produce some accumulating snow by early next week across the Great Lakes, portions of northern New England, and potentially to some higher elevation locations of the interior Northeast US.
Meteorologist Paul Dorian
Arcfield
arcfieldweather.com
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