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Tag Archive for 'short wave'

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7:52 AM
As with the theme for much of this winter so far, model guidance continues to appear a bit lost in the handling of short wave disturbances over North America.  For the time period of Thursday night through Saturday night, there [...]

Meteorological law driving model guidance for this weekend

3:22 PM
This morning I discussed why I was hesitant to buy into a major or moderate snow producer for the northern Mid Atlantic on Saturday afternoon through early Sunday morning.  There were two main contentions in the guidance.  The first was a lack of amplification of the ridge over the eastern Rockies, needed to support [...]

The unknown potential impacts of Tropical Depression Ida

7:20 AM
Tropical Depression Ida is expected to exit the coast of eastern Honduras by this afternoon and slowly move towards the Gulf of Mexico through this weekend.  The NHC expects Ida to strengthen back into a tropical storm this weekend and move towards the eastern Gulf Coast by the middle of next week.
Aside from the [...]

Pattern becomes congested, cooler conditions on the way

5:15 AM
The upper low that had dominated the weather conditions over the Plains and Mississippi Valley for several days has been ejected to the east and is rapidly weakening.
The remnant short wave trough over the Ohio Valley is still pulling a great deal of moisture to the north into the Southeast, Mid Atlantic, and Northeast. [...]

Strong upper low influences the region

8:45 AM
The pattern this morning is is dominated by two key features.  A strong trough over the Great Lakes and an upper low over the central Plains.
The upper trough over the Great Lakes is still centered to the west of the region, which means a southwesterly flow remains over the Mid Atlantic.  As a result, [...]

Fall conditions return for the weekend

5:15 AM
A cold front will continue to slowly slide off the coast this afternoon as a trough over the Great Lakes moves towards New England.  The cold front will initially stall over the coastal waters this morning, however as the upper level trough lifts to the northeast, upper level winds will shift to the west [...]

The war begins

5:15 AM
A war is about to begin over the Mid Atlantic and Great Lakes that will pit two volatile air masses against each other.  Over the Southeast and Gulf Coast, a hot, humid, and unstable air mass is building and heading north while over eastern Canada; cool, dry air is poised to dive south.  The [...]

Weak high pressure protects forecast area

5:15 AM
The disturbance that brought rain to much of the coast yesterday morning is now well to the northeast of the region as the short wave trough begins to lift into the Canadian Maritimes.  This morning the trough axis is over central Pennsylvania and will continue to slide to the east-northeast over the next 48 [...]

The set up of the battle ground

5:15 AM
Over the next three days, the stage will be set for a battle between relatively cool, dry Canadian air to the north and west and a hot, humid, unstable tropical air mass to the south and east.  Over the forecast area, a stationary boundary will waver north and south each day with various impacts [...]

The broken record continues

5:15 AM
The upper level trough over the eastern half of Canada continues to act like a pendulum swinging back and forth through the Great Lakes and Northeast.  After another strong cold front yesterday afternoon, the pendulum is swinging back to the west, which will give a break to the forecast area from stormy conditions.
Through early [...]



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