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fxus61 kpbz 271219 

Area forecast discussion
National Weather Service Pittsburgh PA
819 am EDT Mon Mar 27 2017

more rain is expected tonight and Tuesday as another area of
low pressure crosses the region. Dry weather and seasonal
temperatures are expected by mid week.


Near term /through tonight/...
the only tweak made with the 815am update was to timing of pops
across eastern counties. Only showers remaining in the area are
across the WV/Maryland ridges, so trimmed pops across Pennsylvania and
kept showers lingering elsewhere another hour or two. Previous
discussion follows.

Residual showers will end this morning with passage of a mid
level trough axis extending from the parent low now filling
north of the Great Lakes. Used radar trends and consensus short
pops to construct this portion of the forecast. Passage of this
system occluded front will not alleviate the warm temperatures
over the region. Expect highs today about 15 to 20 degrees above
the seasonal averages while shortwave ridging maintains dry
weather through the afternoon.


Short term /Tuesday through Wednesday/...
by Monday evening, showers with the next low pressure system
are projected out of the west, and can be expected to persist
into Tuesday before building high pressure in the wake of that
systems cold front invokes suppression from the northwest later
in the day. Cooler and drier air may thus be anticipated for
Tuesday night and Wednesday.


Long term /Wednesday night through Sunday/...
another emerging plains closed low is forecast to spread rain across
much of the eastern Continental U.S. During the latter half of the week. Expect
a brief period of dry weather behind that system next weekend before
redeterioration for the start of the work-week. Seasonal temperatures
are expected for the period.


Aviation /12z Monday through Friday/...
upper level low pressure will complete passage over the region
early this morning with diminishing rain and improvement in
conditions in the wake. Condition redeterioration can again be
expected tonight with restrictions through Tuesday as another
low spreads rain over the area.

restrictions are likely again by late week as another broad low
affects the upper Ohio Valley.


Pbz watches/warnings/advisories...

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