Latest PA Weather Summary:
587
AWUS81 KCTP 130925
RWSCTP
PAZ004>006-010>012-017>019-024>028-033>037-041-042-045-046-
049>053-056>059-063>066-132330-
Regional Weather Summary
National Weather Service State College PA
525 AM EDT Thu Aug 13 2026
A few showers and maybe a brief thunderstorm will occur across
primarily southern Pennsylvania this morning, while areas of
morning clouds elsewhere yield to increasing amounts of sunshine
as we progress through the day.
High temperatures today will range from the upper 70s across the
mountains of Northern and Western PA, to the mid and upper 80s
across the southeast. Lows tonight under a fair amount of mid and
high level clouds will be in the 50s across the far north and
mid to upper 60s across the southeast.
A mid and upper level disturbance, resulting from an area of
thunderstorms across the midwest this afternoon and evening, will
move quickly east an spread into the Commonwealth late tonight
into Friday, accompanied by some showers and maybe a thunderstorm
across mainly the southwestern third of the state.
A welcome change to lower humidity with plenty of sunshine will
lick off the weekend as high pressure builds east into the area.
$$
Latest Forecaster's Discussion:
586
FXUS61 KCTP 130848
AFDCTP
Area Forecast Discussion
National Weather Service State College PA
448 AM EDT Thu Aug 13 2026
.WHAT HAS CHANGED...
Increased pops and coverage of showers early today. The showers
and isolated thunderstorms will be limited to the mid and late
morning hours for much of the state.
&&
.KEY MESSAGES...
1) A welcome break from the episodic precip pattern and high
humidity will begin today and continue into the upcoming
weekend before thunderstorm chances return Sunday.
&&
.DISCUSSION...
KEY MESSAGE 1: A welcome break from the episodic precip
pattern and high humidity will begin today and continue into
the upcoming weekend before thunderstorm chances return Sunday.
The nose of a 110 KT upper level jet will moving southeast
across Central PA early this Thursday morning with a quite
strong, diffluent patter between it, and another just segment
across Northern New York.
This Meso-B scale forcing has led to an expanding (but still
quite focused) area of showers and a few low-topped TSRA that
brought a general 1-2 tenths of rainfall in about a 15 minute
period as they moved through KUNV and surrounding areas over the
past 1-2 hours. This convection will impact the Lower and
Middle Susq Valley through shortly after daybreak, with just a
few stray/brief showers possible during the 12-15Z window -
mainly across the NW Mtns of PA where a BKN-OVC stratocu layer
could persist until around 15Z.
Short range ensemble guidance indicates that mid morning clouds
will quickly break with a decent amount of sunshine (mixed with
cirrus) developing by shortly after daybreak across the Central
Ridge and Valley Region of the state.
The remnants of an area of strong to potentially severe TSRA
over the Midwest later this evening will move quickly east
overnight as a remnant MCV and likely link up with the right
entrance region of a strong jet core stretching from Southern
Ontario to the New England Coast, bringing another round of
clouds (and a few to several hour period of showers - mainly in
the late morning through mid afternoon across the SW 1/3 of the
state.
Clearing with a light northerly breeze and comfortably lower
humidity will follow for Friday night and Saturday.
Looks like the more active day may be Sunday vs. Monday, but
could see the activity linger into Monday. Like recent events,
warm advection and directional shear support storm formation,
as the warm air moves back into the area on Sunday.
Latest trends suggest the front will have a harder time pushing
south of the MD line into the weekend. We still expect a brief
break in the episodic tstm precip pattern and very muggy
conditions Friday night into Saturday, but the chance of rain
will linger over portions of the southern tier of CPA. Ensemble
data shows a ramp in precip odds for Sunday into Sunday night in
advance of a frontal system pushing eastward from the Great
Lakes and Ohio Valley.
&&
.AVIATION /07Z THURSDAY THROUGH MONDAY/...
A small area of showers (some briefly moderate to heavy in
intensity) will move SE through the KMDT and KLNS areas between
09-11Z today, bringing a tenth of an inch or so of rainfall,
followed by improving conditions with gradual clearing of the
bulk of low and mid-level clouds.
Early morning IFR then MVFR Strato Cu across the NW Mtns will
dissipate by early this afternoon. Sunshine dimmed by variable
amounts (and thickness) of high clouds will follow for this
afternoon and evening.
Flight cats will improve from MVFR to VFR through late morning
with widespread VFR probable by 18Z Thu.
Outlook...
Thu...Scattered showers/storms mainly across the southern Tier
of PA through Thursday night.
Fri...Mainly VFR. A few afternoon showers or storms possible
over southwestern PA.
Sat...AM fog possible, then mainly VFR.
Sun-Mon...Restrictions possible in showers/thunderstorms.
&&
.CTP WATCHES/WARNINGS/ADVISORIES...
None.
&&
$$
WHAT HAS CHANGED...Lambert/Martin
KEY MESSAGES...Lambert/Martin
DISCUSSION...Lambert/Steinbugl/Martin
AVIATION...Lambert/Bowen
Latest Public Information Statement:
251
NOUS41 KCTP 111338
PNSCTP
PAZ004>006-010>012-017>019-024>028-033>037-041-042-045-046-049>053-056>059-
063>066-120138-
Public Information Statement
National Weather Service State College PA
938 AM EDT Tue Aug 11 2026
...24-HOUR PRECIPITATION REPORTS 1 INCH OR MORE...
Location Amount Time/Date Provider
...Pennsylvania...
...Adams County...
Fairfield 1.8 NNW 1.64 in 0600 AM 08/11 COCORAHS
Fairfield 1.0 NNE 1.50 in 0800 AM 08/11 COCORAHS
Fairfield 2.0 SSW 1.14 in 0800 AM 08/11 COCORAHS
...Centre County...
Bellefonte 7.1 ENE 1.96 in 0730 AM 08/11 COCORAHS
Bellefonte 7.1 ENE 1.75 in 0900 AM 08/11 COCORAHS
...Franklin County...
New Franklin 1.21 in 0915 AM 08/11 CWOP
Chambersburg 1.13 in 0915 AM 08/11 AWS
Waynesboro 1.8 ESE 1.10 in 0700 AM 08/11 COCORAHS
Waynesboro 1.05 in 0920 AM 08/11 CWOP
...Lycoming County...
Duboistown 1.86 in 0917 AM 08/11 CWOP
Williamsport 2.3 WNW 1.36 in 0600 AM 08/11 COCORAHS
...McKean County...
Bradford 5SW 1.60 in 0800 AM 08/11 COOP
Smethport 1.10 in 0915 AM 08/11 CWOP
...Mifflin County...
Lewistown 1.16 in 0600 AM 08/11 COOP
...Northumberland County...
Muncy 4.7 SSE 1.39 in 0700 AM 08/11 COCORAHS
...Potter County...
Roulette 1.8 NNE 1.42 in 0700 AM 08/11 COCORAHS
Coudersport 2.0 N 1.12 in 0755 AM 08/11 COCORAHS
...Somerset County...
5 W Casselman 4.58 in 0932 AM 08/11 Public
Rockwood 4.3 W 3.52 in 0711 AM 08/11 COCORAHS
Meyersdale 2.50 in 0918 AM 08/11 CWOP
Somerset 2.17 in 0917 AM 08/11 CWOP
Somerset 1.93 in 0800 AM 08/11 COOP
Central City 1.60 in 0916 AM 08/11 CWOP
Friedens 1.9 WSW 1.58 in 0800 AM 08/11 COCORAHS
Hidden Valley 0.3 ENE 1.52 in 0500 AM 08/11 COCORAHS
Hidden Valley 1.52 in 0500 AM 08/11 COOP
Somerset 1.33 in 0920 AM 08/11 CWOP
Berlin 3.1 NW 1.07 in 0700 AM 08/11 COCORAHS
...Tioga County...
Westfield 1.26 in 0915 AM 08/11 CWOP
...Warren County...
Kinzua 1.16 in 0622 AM 08/11 RAWS
Russell 0.7 S 1.03 in 0800 AM 08/11 COCORAHS
...York County...
2 SSW York 1.59 in 0839 AM 08/11 AWS
Dover 2.2 E 1.38 in 0500 AM 08/11 COCORAHS
York 1.38 in 0905 AM 08/11 CWOP
York 4.3 WNW 1.26 in 0700 AM 08/11 COCORAHS
Shiloh 1.2 W 1.16 in 0700 AM 08/11 COCORAHS
&&
...24-HOUR MAXIMUM PRECIPITATION REPORTS...
Location Amount Time/Date Provider
5 W Casselman 4.58 in 0932 AM 08/11 Public
Rockwood 4.3 W 3.52 in 0711 AM 08/11 COCORAHS
Meyersdale 2.50 in 0918 AM 08/11 CWOP
Somerset 2.17 in 0917 AM 08/11 CWOP
Bellefonte 7.1 ENE 1.96 in 0730 AM 08/11 COCORAHS
Somerset 1.93 in 0800 AM 08/11 COOP
&&
**METADATA**
:8/11/2026,0800 AM, PA, Adams, Fairfield 2.0 SSW, , , 39.7594, -77.3794, RAIN_24, 1.14, Inch, COCORAHS, 24 hour rainfall,
:8/11/2026,0800 AM, PA, Adams, Fairfield 1.0 NNE, , , 39.8011, -77.3606, RAIN_24, 1.5, Inch, COCORAHS, 24 hour rainfall,
:8/11/2026,0600 AM, PA, Adams, Fairfield 1.8 NNW, , , 39.8134, -77.3764, RAIN_24, 1.64, Inch, COCORAHS, 24 hour rainfall,
:8/11/2026,0900 AM, PA, Centre, Bellefonte 7.1 ENE, , , 40.9453, -77.639, RAIN_24, 1.75, Inch, COCORAHS, 24 hour rainfall,
:8/11/2026,0730 AM, PA, Centre, Bellefonte 7.1 ENE, , , 40.9557, -77.6447, RAIN_24, 1.96, Inch, COCORAHS, 24 hour rainfall,
:8/11/2026,0920 AM, PA, Franklin, WAYNESBORO, , , 39.7333, -77.55, RAIN_24, 1.05, Inch, CWOP, 24 hour rainfall,
:8/11/2026,0700 AM, PA, Franklin, Waynesboro 1.8 ESE, , , 39.7429, -77.5514, RAIN_24, 1.1, Inch, COCORAHS, 24 hour rainfall,
:8/11/2026,0915 AM, PA, Franklin, Chambersburg, , , 39.9283, -77.6694, RAIN_24, 1.13, Inch, AWS, 24 hour rainfall,
:8/11/2026,0915 AM, PA, Franklin, New Franklin, , , 39.8663, -77.6068, RAIN_24, 1.21, Inch, CWOP, 24 hour rainfall,
:8/11/2026,0600 AM, PA, Lycoming, Williamsport 2.3 WNW, , , 41.2538, -77.078, RAIN_24, 1.36, Inch, COCORAHS, 24 hour rainfall,
:8/11/2026,0917 AM, PA, Lycoming, Duboistown, , , 41.2223, -77.0415, RAIN_24, 1.86, Inch, CWOP, 24 hour rainfall,
:8/11/2026,0915 AM, PA, McKean, Smethport, , , 41.8833, -78.4929, RAIN_24, 1.1, Inch, CWOP, 24 hour rainfall,
:8/11/2026,0800 AM, PA, McKean, Bradford 5SW, , , 41.898, -78.7143, RAIN_24, 1.6, Inch, COOP, 24 hour rainfall,
:8/11/2026,0600 AM, PA, Mifflin, Lewistown, , , 40.5833, -77.5667, RAIN_24, 1.16, Inch, COOP, 24 hour rainfall,
:8/11/2026,0700 AM, PA, Northumberland, Muncy 4.7 SSE, , , 41.1361, -76.7651, RAIN_24, 1.39, Inch, COCORAHS, 24 hour rainfall,
:8/11/2026,0755 AM, PA, Potter, Coudersport 2.0 N, , , 41.8033, -78.0169, RAIN_24, 1.12, Inch, COCORAHS, 24 hour rainfall,
:8/11/2026,0700 AM, PA, Potter, Roulette 1.8 NNE, , , 41.8076, -78.1414, RAIN_24, 1.42, Inch, COCORAHS, 24 hour rainfall,
:8/11/2026,0700 AM, PA, Somerset, Berlin 3.1 NW, , , 39.9546, -78.9928, RAIN_24, 1.07, Inch, COCORAHS, 24 hour rainfall,
:8/11/2026,0920 AM, PA, Somerset, Somerset, , , 40.0738, -79.17, RAIN_24, 1.33, Inch, CWOP, 24 hour rainfall,
:8/11/2026,0500 AM, PA, Somerset, Hidden Valley 0.3 ENE, , , 40.0584, -79.2616, RAIN_24, 1.52, Inch, COCORAHS, 24 hour rainfall,
:8/11/2026,0500 AM, PA, Somerset, Hidden Valley, , , 40.042, -79.2566, RAIN_24, 1.52, Inch, COOP, 24 hour rainfall,
:8/11/2026,0800 AM, PA, Somerset, Friedens 1.9 WSW, , , 40.0365, -79.0398, RAIN_24, 1.58, Inch, COCORAHS, 24 hour rainfall,
:8/11/2026,0916 AM, PA, Somerset, Central City, , , 40.0193, -78.8475, RAIN_24, 1.6, Inch, CWOP, 24 hour rainfall,
:8/11/2026,0800 AM, PA, Somerset, Somerset, , , 40, -79.0833, RAIN_24, 1.93, Inch, COOP, 24 hour rainfall,
:8/11/2026,0917 AM, PA, Somerset, Somerset, , , 39.988, -79.1878, RAIN_24, 2.17, Inch, CWOP, 24 hour rainfall,
:8/11/2026,0918 AM, PA, Somerset, Meyersdale, , , 39.8118, -79.0285, RAIN_24, 2.5, Inch, CWOP, 24 hour rainfall,
:8/11/2026,0711 AM, PA, Somerset, Rockwood 4.3 W, , , 39.9215, -79.2377, RAIN_24, 3.52, Inch, COCORAHS, 24 hour rainfall,
:8/11/2026,0932 AM, PA, Somerset, 5 W Casselman, , , 39.88536183029, -79.305282242121, RAIN, 4.58, Inch, Public, Storm total rainfall,
:8/11/2026,0915 AM, PA, Tioga, Westfield, , , 41.9128, -77.5468, RAIN_24, 1.26, Inch, CWOP, 24 hour rainfall,
:8/11/2026,0800 AM, PA, Warren, Russell 0.7 S, , , 41.9313, -79.138, RAIN_24, 1.03, Inch, COCORAHS, 24 hour rainfall,
:8/11/2026,0622 AM, PA, Warren, Kinzua, , , 41.9006, -79.1186, RAIN_24, 1.16, Inch, RAWS, 24 hour rainfall,
:8/11/2026,0700 AM, PA, York, Shiloh 1.2 W, , , 39.9722, -76.8148, RAIN_24, 1.16, Inch, COCORAHS, 24 hour rainfall,
:8/11/2026,0700 AM, PA, York, York 4.3 WNW, , , 39.9817, -76.8103, RAIN_24, 1.26, Inch, COCORAHS, 24 hour rainfall,
:8/11/2026,0500 AM, PA, York, Dover 2.2 E, , , 40.002, -76.808, RAIN_24, 1.38, Inch, COCORAHS, 24 hour rainfall,
:8/11/2026,0905 AM, PA, York, York, , , 39.9192, -76.7102, RAIN_24, 1.38, Inch, CWOP, 24 hour rainfall,
:8/11/2026,0839 AM, PA, York, 2 SSW York, , , 39.9275, -76.7453, RAIN_24, 1.59, Inch, AWS, 24 hour rainfall,
Observations are collected from a variety of sources with varying
equipment and exposures. We thank all volunteer weather observers
for their dedication. Not all data listed are considered official.
$$
MRS
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