10:30 AM (Friday) | *Cold air outbreaks for Mid-Atlantic/Northeast US early and middle next week*
Paul Dorian
Next week will start off on the chilly side following the Sunday night passage of a strong cold front, but an even colder air mass will arrive on Tuesday night following the passage of a secondary strong cold front. Forecast map courtesy NOAA/WPC, tropicaltidbits.com
Overview
The unseasonably warm conditions of last week and the earlier part of this week will be but a memory in the Mid-Atlantic region and Northeast US by the time we get to the middle of next week. One strong cold front will arrive on Sunday night and usher in a chilly air mass for the middle of November as we begin the new work week and then a secondary cold front will push through by late Tuesday and pave the way for an even colder air mass by mid-week. Many spots in the Mid-Atlantic/Northeast US have already experienced at or below-freezing temperatures this season, but, if not, additional opportunities will come on both late Tuesday night and late Wednesday night of next week.
The new work week will start off on the chilly side in the Mid-Atlantic/Northeast US after a milder day on Sunday ahead of the initial strong cold front. Forecast map courtesy NOAA/WPC, tropicaltidbits.com
Details
After a dry and chilly day to start the weekend tomorrow, winds will increase on Sunday from a south-to-southwest direction - gusting to 30 mph or so - ahead of an advancing strong cold front and it’ll turn milder in the Mid-Atlantic region and Northeast US. In addition, clouds will dominate the skies as we close out the weekend and showers could develop for the afternoon and evening hours. Following the passage of the cold front, temperatures on Monday will drop by about ten degrees or so to below-normal levels for the middle of November (normal high is now 58 degrees at PHL, 59 degrees at DCA, and 55 degrees in Central Park, NY) despite plenty of sunshine to start the new work week.
The initial cold front will likely be accompanied by some shower activity on Sunday afternoon and evening in the Mid-Atlantic/Northeast (shown in green). Forecast map courtesy NOAA/WPC, tropicaltidbits.com
The day will start off on the chilly side on Tuesday with low temperatures generally in the 30’s and then a secondary cold front will arrive later in the day and winds will increase upon its arrival and passage from a north-to-northwest direction. This second frontal passage will usher in even colder air for the Tuesday night-Thursday time frame of next week with temperatures well below-normal in the Mid-Atlantic region and Northeast US. Temperatures late Tuesday night and again late Wednesday night are likely to fall into the 20’s for overnight lows in many of the suburban locations along the I-95 corridor.
The secondary cold frontal passage late Tuesday is likely to be dry in the Mid-Atlantic/Northeast US; however, winds will pick up in intensity and stay rather noticeable through mid-week adding to the chill. Forecast map courtesy NOAA/WPC, tropicaltidbits.com
On Wednesday, high temperatures in the DC-to-Philly-to-NYC corridor are likely to be confined to the low-to-mid 40’s with a stiff wind still blowing and this will be some thirty degrees lower than the near record or record warmth of earlier this week. In addition, this mid-week outbreak of cold air will likely be accompanied by “lake effect” snows in the regions just downstream from the Great Lakes to the Appalachian Mountains. The air mass in the Mid-Atlantic/Northeast US should modify by the time we get to the latter part of next week.
Meteorologist Paul Dorian
Perspecta, Inc.
perspectaweather.com
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