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-- Discussion containing changed information from previous version are highlighted. --
000
FXUS61 KPBZ 130638
AFDPBZ

Area Forecast Discussion
National Weather Service Pittsburgh PA
238 AM EDT Thu May 13 2021

.SYNOPSIS...
Cold temperature will moderate toward weeks end, but mostly dry
weather will continue. The next organized rainfall won`t arrive till
Monday.

&&

.NEAR TERM /THROUGH TODAY/...
A clear sky and dry airmass with diminished wind will result in a
decent radiation night with lows approximately 15 degrees under the
norms anticipated. An areawide frost advisory, with a freeze warning
for the higher elevations of eastern Tucker county will remain in
place through mid morning.

The day ahead will showcase another dry day with ample sunshine and
continued temperatures moderation. A weak passing trough to the north
may create a few passing showers along the ridges but the very dry
low levels will likely keep rainfall out of the forecast area.

&&

.SHORT TERM /TONIGHT THROUGH FRIDAY NIGHT/...
The region will remain underneath upper troughing and sfc high
pressure through Friday. Gradual temperature moderation is expected
each day, but readings will remain below climo. Rain is possible in
the Allegheny Mountains on Friday with a passing shortwave trough.
Instability will be minimal but should be enough to spawn some
isolated to scattered showers mainly along the ridges to the east.

&&

.LONG TERM /SATURDAY THROUGH WEDNESDAY/...
Weak passing shortwaves within NW flow may create low chance
precipitation through the weekend. Otherwise, high pressure should
maintain dry conditions with slowly rising temperature readings. The
beginning of next week will feature the ridge over the south shift
east allowing for moist return flow into the Middle Atlantic States.
Here, a series of passing shortwave troughs will bring unsettled
weather to the forecast area from Monday through Wednesday with the
potential of showers and thunderstorms each day. Temperatures return
to normal values but active weather returns too.

&&

.AVIATION /07Z THURSDAY THROUGH MONDAY/...
-- Changed Discussion --
High pressure will maintain VFR through the TAF period. Wind will
continue to go calm until mixing resumes during the daylight hours.
Northerly wind will gust 15-20 knots in the afternoon with a 6-8kft CU
field.

.Outlook...
The next chc for restrictions looks to hold off until next week.
-- End Changed Discussion --

&&

.PBZ WATCHES/WARNINGS/ADVISORIES...
PA...Frost Advisory until 8 AM EDT this morning for PAZ007>009-013>016-
     020>023-029-031-073>076.
OH...Frost Advisory until 8 AM EDT this morning for OHZ039>041-048>050-
     057>059-068-069.
WV...Frost Advisory until 8 AM EDT this morning for WVZ001>004-012-021-
     509>513.
     Freeze Warning until 8 AM EDT this morning for WVZ514.

&&

$$