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The weekend before Thanksgiving

Despite a few lingering clouds from the departing upper level short wave trough the remainder of today (Friday) will feature bright sunshine, blue skies, and a high temperature in the low 50′s (F) after this morning’s low of 36 chilly degrees at the UMW weather station site.  The winds will remain light from the north today but will veer around to the northeast at some point tomorrow (Saturday) as a strong surface high pressure system plants itself firmly over the Northeastern U.S.  The sunshine will remain in force tomorrow afternoon but there could be a few low clouds sneaking in from the northeast as sunset approaches.

Then on Sunday the ‘Burg will be socked in under a low cloud deck with some possible drizzle as the northeasterly flow around the high pressure parked over New England shoves in low level moisture from the cold Atlantic waters over top us.  This overcast will prevail through Monday and at least part of Tuesday as the high pressure stays parked in place as shown here (the blue “H” near the Maine/Canadian border):

The black arrow shows the axis of the cold air damming wedge that will be in place east of the mountains and over the Piedmont, where the low overcast will hang tough.  Thus the high temperatures on Sunday and Monday will be a bit cooler than otherwise expected, probably topping out in the low 50′s again.

The good thing about that high pressure stuck over the Northeast?  It’ll force the storm system – the red “L” east of Cape Hatteras in the above graphic – far enough offshore that the U.S. East Coast will escape most of its detrimental effects.  Thus as the high pressure shifts further eastward next week conditions in the ‘Burg will improve significantly with the sun returning in all its glory by Wednesday and temperatures climbing toward the 60 degree mark by Thanksgiving Day.

 

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Permalink: http://news.fredericksburg.com/weather/2012/11/16/the-weekend-before-thanksgiving/

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