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Thursday, May 23:
The Summer weather preview of the past couple of days will come to an
abrupt end as a cold front and strong upper-level trough move through
late tonight and Friday. Scattered showers and storms ahead of the
front will yield some heavy downpours this afternoon and, perhaps,
some isolated high wind gusts. Friday will feature a developing
northwest breeze that will make for a surprisingly chilly day for late
May. After hitting 90 degrees on Wednesday, Friday afternoon's temps
near 60 degrees, combined with a cool wind, will make it feel like the
50s. A few lingering showers my pop up Friday into Friday night as the
trough moves through. Believe it or not, a few snow flurries or snow
showers are possible over the highest terrain of the Northeast Friday
night into Saturday morning...NOT a very nice start to the weekend in
New England!
Locally, the long Memorial Day week looks pretty good, unless you
using a swimming pool or visiting the shore. (Temperatures this
weekend will average 10 to 12 degrees below normal, so it will feel
more like the start of May rather than the unofficial start to
Summer!) Saturday will be partly sunny with a persistent northwesterly
breeze--high temps will hold in the 60s, but it will feel cooler
during intermittent cloudy periods. High pressure will finally take
control on Sunday with mostly sunshine skies and highs near 70.
Overnight lows throughout the weekend will be in the low to mid 40s,
with upper 30s possible in colder outlying areas. A moderating trend
will develop into the middle of next week with only a slight chance of
a shower as the warmer air moves in. Highs Memorial Day will be in the
low to mid 70s, but ramp up into the mid to upper 80s for the second
half of the week.
Monday, May 20:
Today is the first of a three-day summer preview with high temps
reaching or surpassing the 80-degree benchmark each day. Tuesday and
Wednesday will be the hottest days with highs hitting the mid to,
perhaps, upper 80s. Add in muggy dew points in the mid 60s to near 70
and an isolated afternoon shower in one or two spots, and you've got a
taste of late-June-like conditions. A slow moving cold front and
upper-level trough will enter western PA late Wednesday, and these
systems will trigger some strong storms to our west. Areas east of the
Susquehanna river may see a few pop-up storms Wednesday
afternoon/evening, but the risk of severe storms is mainly from
central PA westward. Locally, the best chance for more widespread
showers in later Wednesday through the day on Thursday--so Thursday is
the dampest-looking day of the week ahead. Some clouds may linger
early Friday, but a developing northwest breeze should provide for
clearing skies and lowering humidity during the afternoon.
Currently (as of Noon Monday) the long Memorial Day weekend is
looking quite nice with cooler, drier, early-May-like conditions.
Behind Thursday's cold front a large area of Canadian high pressure
will build across to our north bringing us a northerly breeze for the
first half of the weekend. A secondary front (and passing upper-level
system) may kick up some clouds Saturday afternoon into Sunday,
however, partly sunny skies are likely both days with highs in the low
70s. High pressure may then settle in nearly overhead Sunday night
into Monday--if so, expect clear skies and near-average conditions
(mid 70s) for Memorial Day. One caveat: the energetic, blocky weather
pattern now over the central and western US could yield a curve ball
in the long-range forecast, so do check back here in a couple days for
another look at the weekend forecast.
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