Penn Hills, Pennsylvania 7 Day Weather Forecast

Wx Forecast - Wx Discussion - Wx Aviation

290
FXUS61 KPBZ 261118
AFDPBZ

Area Forecast Discussion
National Weather Service Pittsburgh PA
718 AM EDT Tue May 26 2026

.WHAT HAS CHANGED...
Updated for the 12z TAF issuance.

&&

.KEY MESSAGES...
1) Rain chances and isolated storms expected south of
Pittsburgh on Tuesday and then across the entire area on
Wednesday

2) Cooler and drier conditions expected late week

&&

.DISCUSSION...
KEY MESSAGE 1...

The frontal boundary that has been in place will continue to be
a focal point for additional convection on Tuesday. The
convection is expected to remain south of Pittsburgh on
Tuesday. Heavier rain totals are possible in Tucker County and
could prime the environment for Wednesday.

By Tuesday night and into Wednesday, the development of a
trough to our north combined with the lingering frontal boundary
draped across West Virginia could lead to showers and isolated
thunderstorms capable of producing isolated flooding from
training convection. Confidence is increasing as WPC has
introduced a slight risk of excessive rainfall along I-70 and
south. The NBM has upped probabilities to 60% to 70% of
rainfall amounts greater than 1 inch for Wednesday.

Stay tuned for further updates as a Flood Watch may be needed
for the Wednesday period.

KEY MESSAGE 2...

By midweek, long-range guidance suggests a closed low pressure
system will persist along the West Coast while a ridge
strengthens over the Northern Plains. This pattern is expected
to promote deep northwest flow across the Great Lakes and
Northeast under a trough. As a result, cooler and drier
conditions are anticipated late in the week and continuing into
early next week. The threat for hazardous weather is considered
low Thursday into Monday.

&&

.AVIATION /12Z TUESDAY THROUGH SATURDAY/...
The cirrus that streamed in overnight has sagged south some
this morning and now bisects the region. VFR is the rule across
the region, with the exception isolated instances of river
valley fog, mainly north of the cirrus shield.

VFR is expected for most on Tuesday with SCT stratocu. Clouds
will thicken into the afternoon as the boundary lifts north as a
warm front and returns scattered showers and a rumble of
thunder along with it. Precip will be first to arrive to MGW/ZZV
then spreading north overnight. Think that the best chance for
rain and associated restrictions will be for all but FKL/DUJ
with uncertainty in how far north the front lifts. The rain may
be heavy at times late Tuesday night and Wednesday morning. Wind
through the TAF period will remain light and
variable.Outlook... The front will kick to the south and out of
our area on Wednesday returning areawide VFR Thursday and Friday
under high pressure.

Outlook... The front will kick to the south and out of our area
on Wednesday returning areawide VFR Thursday and Friday under
high pressure.

&&

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

&&

$$

DISCUSSION...Shallenberger
AVIATION...MLB/AK