Bethel Park, Pennsylvania 7 Day Weather Forecast

Wx Forecast - Wx Discussion - Wx Aviation

843
FXUS61 KPBZ 101227
AFDPBZ

Area Forecast Discussion
National Weather Service Pittsburgh PA
827 AM EDT Tue Jun 10 2025

.SYNOPSIS...
High pressure will provide quiet weather with lower humidity
through Thursday, though a few isolated showers are possible
across the ridges today. Rain chances return Friday and on into
the weekend.

&&

.NEAR TERM /THROUGH TONIGHT/...
KEY MESSAGES:

- A few isolated showers/storms possible in the ridges.
- High temperatures near normal.
---------------------------------------------------------------

Early morning low clouds and fog will dissipate after sunrise with
mixing into drier air advecting in in mid-level westerly flow. High
pressure will begin to build today as broad upper troughing crosses
from the Great Lakes into the Northeast. Cold advection and
northwest flow aloft will keep afternoon temperatures a few degrees
cooler, but still in the 70s for most. Plentiful sunshine is
expected through fair weather Cu.

Lingering moisture across the ridges and some orographic lift may
allow a few showers and thunderstorms to develop there with
afternoon heating. Maintained Chance/Slight Chance PoPs for this.
Overnight temperatures will fall back into the 50s (near normal)
under mostly clear skies.

&&

.SHORT TERM /WEDNESDAY THROUGH THURSDAY NIGHT/...
KEY MESSAGES:

- Dry and less humid weather with a warming trend
----------------------------------------------------------------

Dry weather continues Wednesday and Thursday as high pressure
builds under northwest flow aloft. Low-level winds will become
more southwesterly as the sfc high becomes centered over the
Ohio Valley. This will aid warm advection, and with sunny skies,
will drive afternoon highs back into the lower 80s on Wednesday
and . However, lower humidity (dews in the 50s to near 60F)
will make for warm, but pleasant weather. By Thursday, highs
will push into the mid-80s for many as dew points push into the
60s.

&&

.LONG TERM /FRIDAY THROUGH MONDAY/...
KEY MESSAGES:

- Rain chance returns Friday through Monday
-------------------------------------------------------------------

Westerly flow with heights in the middle 580s is expected
through the long term. Confluent flow pattern aloft northeast
of the central US trough should keep high pressure over the
Great Lakes area and set up a slow moving west-east frontal zone
in the Ohio Valley which will gradually allow for moisture
pooling and destabilization during the period. Flow does weaken
and vertical wind shear would support weakly organized
convection during the period, so overall organized severe threat
appears limited. With weaker wind fields the focus would shift
to slow moving and locally heavy pulse to multi-cell storms that
are mainly diurnally driven.

&&

.AVIATION /13Z TUESDAY THROUGH SATURDAY/...
Morning low stratus and fog has set in around sunrise and will
continue for a couple hours before mixing into a drier boundary
layer atop the low level moisture erodes the restrictions. VFR
is expected to return areawide with high confidence after 14 or
15z.

Weak convergence along a slowly progressing boundary and orographic
ascent will support some widely scattered showers and thunderstorms
this afternoon east of Pittsburgh. Given the scattered nature, opted
for PROB30 mentions at DUJ/LBE/MGW in best proximity to the highest
probability of precipitation, though that chance only sits around 20-
30%. Otherwise, some diurnally driven mid-level clouds will develop
this afternoon. Wind will pick up out of the west-southwest with a
40-80% chance of gusts >20 knots before relaxing after sunset and
giving way to a mostly clear sky overnight.

Outlook...
High pressure and weak flow aloft is favored to maintain VFR
and dry weather through the bulk of the day Thursday. Weak
disturbances within the upper flow may bring increased
precipitation chances Friday into the weekend.

&&

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

&&

$$

SYNOPSIS...Rackley
NEAR TERM...Rackley/MLB
SHORT TERM...Rackley
LONG TERM...Craven/Rackley
AVIATION...MLB/Shallenberger