12:30 PM | *Cool blast reaches the Mid-Atlantic/Northeast US on Labor Day Monday...a cool start to September all the way from the Great Lakes/Midwest to the Mid-Atlantic/Northeast US*
Paul Dorian
A cool blast of air will arrive in the Mid-Atlantic/Northeast US on Monday, Labor Day, following the passage of a pair of cold fronts during the weekend. Map courtesy Canadian Met Centre, tropicaltidbits.com
Overview
The month of August will likely end up with very close-to-normal temperatures in much of the Mid-Atlantic region and Northeast US and it looks like September will get off to cool start. Indeed, a cool blast of air will push into the Upper Midwest and Great Lakes region later this weekend and then arrive in the Mid-Atlantic region and Northeast US on Monday, Labor Day following the passage of a couple of cold frontal systems. The initial cold front this weekend will likely result in numerous showers and thunderstorms later Saturday and Saturday night across the northeastern states and then a secondary cold front can produce some shower activity on Sunday and Sunday night. By Monday and Tuesday, highs will be confined to the 70’s across the Mid-Atlantic/NE US and overall humidity will be at very comfortable levels.
The 5-day period from September 2nd (Monday) to September 7th (Saturday) will feature below-normal temperatures across the Great Lakes/Midwest/Mid-Atlantic/NE US as well as very comfortably low humidity levels. Map courtesy Canadian Met Centre, tropicaltidbits.com
Details
The weather has turned uncomfortably humid today in the Mid-Atlantic region and NE US and temperatures have already soared into the 90’s in many spots; especially, in the big cities along the I-95 corridor. Unlike earlier spells this summer, this surge in heat and humidity will be a one-day affair in much of the northeastern states as the passage of a cold front will usher in somewhat cooler air for Thursday and Friday. That cold front will tend to stall out and dissipate on Thursday across the southern Mid-Atlantic region and its close proximity will keep it unsettled in much of the northeastern part of the nation with the chance of showers and thunderstorms both on Thursday and Friday.
A primary cold front will drop southeast into the Mid-Atlantic/NE US during the first part of the upcoming weekend likely resulting in numerous showers and thunderstorms from later Saturday into Saturday night. Map courtesy Canadian Met Centre, tropicaltidbits.com
Another cold front will bear down on the Mid-Atlantic/NE US during the day on Saturday and this “primary” frontal system will likely bring widespread showers and thunderstorms late Saturday and Saturday night. A “secondary” cold front will then drop south and east into the Mid-Atlantic/NE US later Sunday and Sunday night and it can result in additional shower activity to close out the weekend though likely not as widespread as with the initial cold front.
A secondary cold front will push through the northeastern states late in the upcoming weekend and it’s passage will usher in a very comfortable air mass for the northeastern states as we begin the new week on Labor Day and the new month of September. Map courtesy Canadian Met Centre, tropicaltidbits.com
On Monday, Labor Day, cooler and drier air that had its origins in Canada will push into the Mid-Atlantic/NE US following the passage of the second cold front and strong surface high pressure will build in from the Great Lakes. The air mass for early next week will feature slightly below-normal temperatures and very comfortable humidity levels all the way from the Great Lakes/Midwest to the Mid-Atlantic/NE US. High temperatures on Monday and Tuesday, for example, will likely be confined to the pleasant 70’s in the I-95 corridor region from DC-to-Philly-to-NYC-to-Boston....not a bad way at all to start the new month.
Meteorologist Paul Dorian
Arcfield
arcfieldweather.com
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