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Select Your Area NWS Weather Forecast Office
NWS Area Weather Forecast Discussion
County Warning Area [CWA]: PBZ
Regional NWS Weather Office: Pittsburgh, PA

000
FXUS61 KPBZ 190136
AFDPBZ

Area Forecast Discussion
National Weather Service Pittsburgh PA
936 PM EDT Wed Jul 18 2018

.SYNOPSIS...
Dry weather is expected through Thursday under high pressure.
Periodic rain chances return Friday afternoon through the
weekend with slow moving low pressure.

&&

.NEAR TERM /UNTIL 6 AM THURSDAY MORNING/...
No changes needed for the late eve update.

Previous...
Changes for the early eve update were primarily to hourly
trends with an upward adjustment to lows over northern zones
based on boundary layer moisture trends. In general, overnight
lows were projected 5 to 10 degrees below the averages with dry
high pressure supporting the clear sky, light wind, and
relatively low dewpoints.

&&

.SHORT TERM /6 AM THURSDAY MORNING THROUGH FRIDAY NIGHT/...
Continued dry conditions with seasonal temperatures expected on
Thursday with high pressure still in control.

Rain/storm chances will begin to increase Friday afternoon and
the into the evening as moisture advection increases ahead of
an upper low moving into the upper midwest.

&&

.LONG TERM /SATURDAY THROUGH WEDNESDAY/...
Models continue to show very little movement of the aforementioned
upper low over the course of the weekend and into next week.
This will maintain periodic shower and thunderstorm chances,
cloud coverage, and near average temperatures through the
majority of the period.

&&

.AVIATION /02Z THURSDAY THROUGH MONDAY/...
High pressure will maintain VFR and light north wind. That wind
will veer to the southeast on Thursday.

OUTLOOK...
Restricitions are likely with encroaching weekend low pressure.

&&

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

&&

$$

Forecast Discussion from: NOAA-NWS Script developed by: El Dorado Weather