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-- Discussion containing changed information from previous version are highlighted. --
714
FXUS61 KPBZ 230907
AFDPBZ

Area Forecast Discussion
National Weather Service Pittsburgh PA
507 AM EDT Fri Sep 23 2016

.SYNOPSIS...
After another warm day today, a weak cold front passing tonight
will bring cooler temperatures for the weekend.

&&

.NEAR TERM /THROUGH SATURDAY/...
Early morning update to increase sky cover somewhat especially
this morning as mid deck has expanded. Previous discussion
follows.

Mid and high clouds have moved into northwest PA and eastern OH in
advance of a developing New England upper trough and a weak cold
front. Expect more cloud cover across the north into the
afternoon, with temperatures to continue more than 10 degrees
above average ahead of the front.

The weak boundary will cross and exit the area Friday night, and
while a sprinkle or two is possible no POPs will be in the
forecast, as moisture is limited and the better dynamics continue
to be well north of the region. Temperatures will be decreasing
back toward normal values Saturday

&&

.SHORT TERM /SATURDAY NIGHT THROUGH MONDAY/...
High pressure will bring near seasonal temperatures and dry
conditions through Sunday night. An approaching area of low
pressure will bring increasing dew points and a chance for showers
later Monday.

&&

.LONG TERM /MONDAY NIGHT THROUGH THURSDAY/...
Models coming into better agreement with slow moving storm system
from the Great Lakes translating east with an associated cold
front into Wednesday. Models still differ on strength and speed
of system, so Superblend was used for much of the forecast period
with chance POPs through Tuesday tapering to isolated showers
Wednesday. Dry and cool high pressure will dominate late week.

&&

.AVIATION /09Z FRIDAY THROUGH TUESDAY/...
VFR conditions with high clouds increasing overnight. High clouds
will continue to move through the area during the daylight hours,
with a non-restrictive mid-deck spreading over the area from north
to south late in the day and into the evening hours.

.OUTLOOK /THURSDAY NIGHT THROUGH MONDAY/...
Restrictions are possible tonight and into Saturday morning, as
cold front sinks southward through the region. A popup shower
cannot be ruled out with the passage of this boundary, but
visibility restrictions are not expected. After the low clouds
clear southern ports Saturday morning, no widespread restrictions
into early Monday. Possible restrictions Monday with the next
strong cold front, however timing in model solutions continue to
be an issue.

&&

.PBZ WATCHES/WARNINGS/ADVISORIES...
MD...None.
OH...None.
PA...None.
WV...None.

&&

$$