Area Forecast Discussion
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FXUS61 KPBZ 231548
Area Forecast Discussion
National Weather Service Pittsburgh PA
1148 AM EDT Sun Apr 23 2017
High pressure should maintain dry weather today. Low pressure
is expected to track along the East Coast, resulting in
periodic rain chances mainly east of I 79 for the start of the
new work week.
.NEAR TERM /THROUGH TONIGHT/...
Surface high pressure will hold dry conditions through today as
a cut-off low churns into the southeast U.S. High clouds will
begin to increase this afternoon, but a mix of sun and clouds
will be maintained through evening. Northward expansion of rain
will start to reach our southeastern zones near midnight. Beyond
that, given the continued southeastern drift of the parent low,
more favorable rain chances will be well confined. Increased
PoPs over the high elevations tonight, while continuing to keep
areas west of the Ridges dry.
High temperatures today will top out a few degrees above
normal. Lows tonight will be a bit trickier as clouds begin to
increase areawide, and easterly flow strengthens. This should
keep the mountains cool tonight, while downslope areas west of
the Ridges warm. These locations should stay near or a few
degrees above average.
.SHORT TERM /MONDAY THROUGH TUESDAY NIGHT/...
The low is forecast to dig toward the Southeastern CONUS before
tracking up the East Coast during the first half the week. This
scenario should confine rain chances initially to the I 68
corridor tonight with that area on the nrn periphery of the low.
Eventual nwd progression of rain chances Mon and Tue with the
area east of I 79 on the wrn periphery of the low as it tracks
along the coast. Temperatures should average a few degrees above
seasonal levels through the period.
.LONG TERM /WEDNESDAY THROUGH SATURDAY/...
Ridging and rising heights in response to an approaching
Midwestern trough should result in dry and warm weather for mid
week. The flow is progged to amplify by late week as broad low
pressure develops over the western CONUS. Embedded shortwaves in
moist southwest flow aloft should return periodic rain chances
by late week and the weekend. Temperatures are expected to
average 10-15 degrees above average.
.AVIATION /16Z SUNDAY THROUGH THURSDAY/...
High pressure will maintain VFR and light northeast to east sfc
wind into Monday.
The next chance for general restrictions is expected with mid
week low pressure.