Hmmm
The guidance continues to beat the drum on potential for a high end,
potentially damaging wind event. As the parent low generates a
secondary low along the frontal boundary over the mid Atlantic a
very robust low level jet develops that would be unusually strong
for this time of year. We`re talking 75 to 85 kts at 925 mb and 85
to 95 kts at 850 mb. As mentioned by the previous forecaster, the
EPS and NAEFS ensembles continue to depict anomalies of >5 standard
deviations and maxed out percentiles! So, while historically these
southerly wind events struggle to mix down and modeled soundings
would indicate as much, the anomalous warmth that comes with it
should help to break that subtle inversion enough to mix down some
of those wind, and with that magnitude, even 50-60% would cause
scattered downed trees and power outages. Compounding that risk is
the heavy downpours and potential fine line of convection moving
through in the morning that would help to mix down the stronger
gusts
n additional concern is with strong to potentially damaging
winds Thursday night into early Friday morning. Models continue
to show 65 to 75 kt winds at 950 mb during this period. The core
of this low level jet is most likely to pass over Long Island
and southeast Connecticut. Forecast soundings indicate an
inversion around or just below these high winds and this is
typically a difficult forecast on how much will mix down to the
surface, but with models continuing to show signs of a potential
squall line or convective cold frontal band, this would enhance
the chances for stronger winds to mix down to the surface. If
this type of rain band/squall line materializes, the winds would
effectively weaken considerably once it passes, similar to what
occurred on November 15. Advisory-criteria winds could occur
for the inland areas. Strongest sustained winds and gusts would
be from late evening Thursday through around daybreak Friday.