Today is Transition Day for the NYC Area!
We go from Steamy Storms to Pleasant & Dry in the Next 24 Hours!
Yesterday was another sultry, steamy day across much of the Northeast and the mid-Atlantic states... However, unlike the
'uneventful' afternoon and evening hours of Memorial Day, when the regional radar was fairly quiet, a well-organized line of
And as temperatures east of the Appalachians soared well into the 80s and the lower-90s, the storms which flared up well to the
north and west of the big, coastal cities started producing strong and damaging wind gusts, as well as some large hail... Even
though most of the wind gusts associated with these thunderstorms early last night were below the National Weather Service's
criteria needed to issue severe thunderstorm warnings (50 knots, or 58 miles per hour) along the I-95 corridor, there was still
some very heavy rain for a short while across parts of eastern Pennsylvania, central Maryland and in northern Virginia... The
regional radar early this morning has been showing two trends: 1.) That initial wave of showers and thunderstorms has been
weakening along the immediate coast, and 2.) A second, separate area of showers and thunderstorms which developed late
last evening over central Pennsylvania and in upstate New York is still pressing to the east... This second 'pulse' of activity is
associated with the cool front that we've been talking a lot about the past couple of days... A one-millibar pressure analysis as of
3 a.m. showed this front was located in central Pennsylvania, and it will continue to march slowly to the east today... Because
the air east of the Appalachians is still moisture-laden and temperatures overnight have been no lower than the upper-60s or
lower-70s in most places (and, those cooler locations can attribute most of this to some locally heavy rain that fell earlier), we'll
still need to allow for a couple of showers and a thunderstorm today... And, while it may just turn out partly sunny this afternoon
across much of eastern Pennsylvania with the corridor of showers having exited, most of the larger cities and the immediate
coast may still have another shower or thunderstorm to deal with until late this afternoon.... It seems that making a 'guarantee'
that there will be rain-free weather after 1 or 2 p.m. seems more credible in a place like Harrisburg or Allentown, Pa. rather than in
Atlantic City, New York City or on Long Island... Temperatures will wind up in the lower and middle-80s, and the humidity will still
be moderately high until some drier air begins to filter into the region this evening -- as we stated yesterday, today will be our
"day of transition"... It'll become more comfortable later tonight with clearing... Most lows will be in the 50s in the typically cooler
spots and the lower-60s in the bigger cities...
As for what's left of "Beryl" -- the center of circulation early this morning has been moving parallel to the coast of South Carolina,
and it is still (the tropical depression) expected to move out to sea late this afternoon or tonight... There are still various flood
watches out for the coastal Carolinas, and there may be as much as 5 or 6 inches of rainfall in the Outer Banks by midnight
tonight... Back to the Tri-State Area, a high pressure system building into the Northeast tomorrow will bring us lots of sunshine
and lower humidity... Thursday night will be clear and comfortable, and then some sunshine Friday will start to fade behind
moisture northeastward Friday night and Saturday... While the global models had previously shown some differences on the
timing of the rain in the Eastern Region, it appears now that the bulk of our showers and thunderstorms will be occurring here
Friday night into Saturday, before some drier air returns later on Saturday and prevails here for the rest of the weekend... Early
next week, a persistent upper-level trough will promote some cooler than normal weather for early in June, as well as clouds and
Have a great day!