Area Forecast Discussion
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FXUS61 KPBZ 282150
Area Forecast Discussion
National Weather Service Pittsburgh PA
550 PM EDT Tue Mar 28 2017
After showers depart to the east this evening, high pressure
will bring dry weather for Wednesday before another low
pressure system brings rain into the region beginning late
.NEAR TERM /THROUGH WEDNESDAY/...
-- Changed Discussion --Updated to bring an end to precipitation a little bit more
quickly based on radar trends. Expect virtually all of the
showers to be east of the CWA by 00Z. Also upped the cloud cover
a bit overnight into Wednesday morning, as moisture will become
trapped underneath a strengthening subsidence inversion
overnight, promoting continued cloud cover until the inversion
can mix out with daytime heating tomorrow. Temperatures look
good for now, with slightly above normal overnight lows and
seasonable Wednesday max values.
-- End Changed Discussion --
.SHORT TERM /WEDNESDAY NIGHT THROUGH FRIDAY/...
Computer models are still struggling somewhat with the arrival
time for precipitation on Thursday. Attempted to take a middle
of the road approach, keeping conditions dry Thursday morning,
introducing the chance of showers Thursday afternoon, and
bringing in widespread showers Thursday night. Increased pops to
categorical Friday with all models in good agreement showing
rain across much of the eastern United States. After seasonal
temperatures Wednesday night and Thursday, both highs/lows
should be about five degrees warmer over the next 24 hours.
.LONG TERM /FRIDAY NIGHT THROUGH TUESDAY/...
As low pressure moves offshore the East Coast Friday night,
showers should come to an end Saturday morning. High pressure
will bring quiet weather through the second half of the weekend
before another system brings the chance for rain Monday into
Tuesday. Seasonal temperatures are expected for the period.
.AVIATION /22Z TUESDAY THROUGH SUNDAY/...
MVFR to IFR conditions will continue through much of the period
across the terminals. The low pressure has helped lower
ceilings to IFR with drizzle over some ports and MVFR
visibility. Expect the showers to taper off later in the day
while visibility improves as the low pressure exits east. Low
ceilings will continue to impact the terminals through tonight
as low level moisture resides over the area. Conditions are
expected to improve by Wednesday morning as northerly flow
brings drier air through the region.
Outlook... Restrictions are likely again by late week as
another broad low affects the Upper Ohio Valley.