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Latest PA Weather Summary:

088
AWUS81 KCTP 220842
RWSCTP
PAZ004>006-010>012-017>019-024>028-033>037-041-042-045-046-
049>053-056>059-063>066-222245-

Regional Weather Summary
National Weather Service State College PA
442 AM EDT Fri May 22 2026

Temperatures turn much cooler to end the week, with below normal
temps expected into the weekend. High temperatures today will be
in the 50s and 60s, while lows tonight will be in the 40s.
Saturday will be the chilliest day of the weekend, particularly
for central and northeastern Pennsylvania, with temperatures stuck
in the 40s and low 50 degrees. Areas near Pittsburgh will be
warmer, with temperatures climbing into the mid 60s.

After a brief break in the rain this morning, steady rain will
begin to expand northward once again this afternoon. A soaking
rain is expected from late Friday night into early Sunday morning.
Widespread rainfall amounts of 1 to 2 inches are expected, with
locally higher amounts approaching 3 inches possible. Scattered
showers will continue on Sunday, but steadier rain is expected
once again for Sunday night into Monday as another disturbance
moves through.

$$

Latest Forecaster's Discussion:

594
FXUS61 KCTP 221717
AFDCTP

Area Forecast Discussion
National Weather Service State College PA
117 PM EDT Fri May 22 2026

.WHAT HAS CHANGED...
* Added ridgetop fog tonight through Saturday

&&

.KEY MESSAGES...
1) Noticeably cooler into Memorial Day weekend with record
challenging cold max temperatures on Saturday

2) Widespread soaking/beneficial rain dampers outdoor plans and
activities to start Memorial Day weekend

&&

.DISCUSSION...
KEY MESSAGE 1: Noticeably cooler into Memorial Day weekend with
record challenging cold max temperatures on Saturday

Model data shows the anomalous high pressure channeling
southward down the east side of the Appalachians, setting up a
classic cool wedge/cold air damming (CAD) pattern into Memorial
Day weekend. We continue to reiterate a bearish outlook for
daytime temps Sat-Sun with record challenging cold maxT fcst for
Saturday (see climate section below).

850 mb show a highly anomalous V-component (wind from the SSE)
at 18Z Sat with Standardized Anomalies of +3-4 St deviations
over Central and NW PA, while winds around 925 mb highlight
negative U anomalies of the same magnitude (from the ESE).

This will create an expansive llvl CAD regime with strong
moisture advection aloft, leading to steady light to moderate
rain/drizzle. The moderately gusty east/southeast wind will
make it feel downright dreary/raw, unseasonably chilly and
pretty miserable for this time of year - especially for outdoor
activities Friday afternoon through Sunday morning.

The 2-3 day cool stretch will certainly be noticeable following
an early taste of summer, but it won`t have staying power with
temperatures forecast to moderate and trend above normal into
the middle of next week.

-----------------------------------------------------------------

KEY MESSAGE 2: Widespread soaking/beneficial rain dampers
outdoor plans and activities to start Memorial Day weekend

Tracking initial surge of rain moving through Somerset, Bedford
and Fulton Counties early this afternoon. Expect rain to spread
northward through the evening into tonight. The rain will
continue through the day on Saturday, with max QPF in the
12-18Z window per 6hr HREF PMM.

Expect widespread 1-2" rainfall totals which will be very
beneficial for D1-D2 drought areas in the far southern tier into
the LSV. Anomalous upslope east-southeasterly flow may result
in locally higher rainfall amounts approaching 3 inches across
portions of south-central PA. The precip pattern transitions
from total washout with steady rain/drizzle Sat to more of a
showery/low chance thunder regime for Sunday into Memorial Day.

&&

.AVIATION /18Z FRIDAY THROUGH WEDNESDAY/...
Low clouds will surge northward today, bringing MVFR
restrictions to AOO and JST, then UNV, MDT, and IPT. Eventually
all airfields will be restricted by this evening. Widespread
stratiform rain showers will accompany the lowering ceilings and
will bring reduced (MVFR to IFR) visibilities.

There is a signal for gusty southeasterly winds at KJST and KBFD
today, with gusts 20 to 25 kts. Although gusty winds are also
possible at KLNS and KMDT, clouds/rain should keep the airmass
stable and prevent winds from mixing down consistently. By 12Z
Saturday, all airfields should have at least MVFR restrictions,

Outlook...

Fri...Restrictions likely with rain moving in from south to
north, lasting into Fri night.

Sat...Widespread IFR/LIFR restrictions in steady rain

Sun...Minor improvement to MVFR/IFR restrictions as rain tapers
off

Mon...IFR/MVFR early, then MVFR in light rain showers

Tue...Continued MVFR restrictions with scattered showers,
especially south

&&

.CLIMATE...
Daily Record Low Maximum & Forecast Temperatures for May 23:

LOCATION RECORD (YEAR) FORECAST HIGH
Harrisburg 54 (1982) 54
Williamsport 57 (1982) 53
Altoona 52 (2005) 51
Bradford 45 (1963) 49
State College 53 (1968) 51

&&

.CTP WATCHES/WARNINGS/ADVISORIES...
None.

&&

$$

WHAT HAS CHANGED...Steinbugl
KEY MESSAGES...Steinbugl
DISCUSSION...Steinbugl
AVIATION...Banghoff
CLIMATE...Steinbugl

Latest Public Information Statement:

455
NOUS41 KCTP 211238
PNSCTP
PAZ004>006-010>012-017>019-024>028-033>037-041-042-045-046-049>053-056>059-
063>066-220038-

Public Information Statement
National Weather Service State College PA
838 AM EDT Thu May 21 2026

...24-HOUR PRECIPITATION REPORTS...

Location Amount Time/Date Provider

...Pennsylvania...

...Cambria County...
Geistown 1.00 in 0814 AM 05/21 COCORAHS
Johnstown Airport 0.80 in 0754 AM 05/21 ASOS

...Centre County...
Bear Knob 0.92 in 0749 AM 05/21 RAWS
South Philipsburg 0.76 in 0818 AM 05/21 CWOP

...Columbia County...
Berwick 0.84 in 0820 AM 05/21 AWS

...Franklin County...
Greencastle 0.81 in 0815 AM 05/21 CWOP

...Northumberland County...
Wolf Pond 1.10 in 0808 AM 05/21 RAWS
Elysburg 0.85 in 0815 AM 05/21 CWOP
Milton 0.76 in 0825 AM 05/21 AWS
Milton 0.75 in 0815 AM 05/21 CWOP

...Perry County...
3 W Duncannon 0.83 in 0825 AM 05/21 AWS
Big Knob 0.82 in 0808 AM 05/21 RAWS

...Schuylkill County...
Valley View 1.04 in 0817 AM 05/21 CWOP
Valley View 0.5 W 0.99 in 0600 AM 05/21 COCORAHS
Pottsville 0.6 NNE 0.98 in 0700 AM 05/21 COCORAHS
Pottsville 0.92 in 0816 AM 05/21 CWOP
Pottsville 0.84 in 0825 AM 05/21 AWS
Schuylkill Haven 0.79 in 0800 AM 05/21 CWOP
Tremont 0.3 NNW 0.78 in 0800 AM 05/21 COCORAHS
New Ringgold 0.76 in 0818 AM 05/21 CWOP
Landingville 0.76 in 0730 AM 05/21 HADS

...Snyder County...
Port Trevorton 0.85 in 0815 AM 05/21 CWOP

...Somerset County...
Friedens 1.9 WSW 1.44 in 0800 AM 05/21 COCORAHS
Rockwood 4.3 W 1.16 in 0628 AM 05/21 COCORAHS
Somerset 1.0 WSW 1.12 in 0700 AM 05/21 COCORAHS
Hidden Valley 1.06 in 0500 AM 05/21 COOP
Hidden Valley 0.3 ENE 1.06 in 0500 AM 05/21 COCORAHS
Somerset 1.03 in 0820 AM 05/21 CWOP
HOLLSOPPLE 1.00 in 0819 AM 05/21 CWOP
Confluence 1 SW 0.95 in 0800 AM 05/21 COOP
HOLLSOPLE 0.93 in 0820 AM 05/21 CWOP
Somerset 0.88 in 0800 AM 05/21 COOP
Berlin 3.1 NW 0.75 in 0700 AM 05/21 COCORAHS

...Union County...
1.1 NW Milton 0.82 in 0730 AM 05/21 HADS

&&

...24-HOUR PRECIPITATION REPORTS RANKED BY VALUE...

Location Amount Time/Date Provider
Friedens 1.9 WSW 1.44 in 0800 AM 05/21 COCORAHS
Rockwood 4.3 W 1.16 in 0628 AM 05/21 COCORAHS
Somerset 1.0 WSW 1.12 in 0700 AM 05/21 COCORAHS
Wolf Pond 1.10 in 0808 AM 05/21 RAWS
Hidden Valley 1.06 in 0500 AM 05/21 COOP
Hidden Valley 0.3 ENE 1.06 in 0500 AM 05/21 COCORAHS
Valley View 1.04 in 0817 AM 05/21 CWOP
Somerset 1.03 in 0820 AM 05/21 CWOP
HOLLSOPPLE 1.00 in 0819 AM 05/21 CWOP
Geistown 1.00 in 0814 AM 05/21 COCORAHS
Valley View 0.5 W 0.99 in 0600 AM 05/21 COCORAHS
Pottsville 0.6 NNE 0.98 in 0700 AM 05/21 COCORAHS
Confluence 1 SW 0.95 in 0800 AM 05/21 COOP
HOLLSOPLE 0.93 in 0820 AM 05/21 CWOP
Bear Knob 0.92 in 0749 AM 05/21 RAWS
Pottsville 0.92 in 0816 AM 05/21 CWOP
Somerset 0.88 in 0800 AM 05/21 COOP
Port Trevorton 0.85 in 0815 AM 05/21 CWOP
Elysburg 0.85 in 0815 AM 05/21 CWOP
Berwick 0.84 in 0820 AM 05/21 AWS
Pottsville 0.84 in 0825 AM 05/21 AWS
3 W Duncannon 0.83 in 0825 AM 05/21 AWS
Big Knob 0.82 in 0808 AM 05/21 RAWS
1.1 NW Milton 0.82 in 0730 AM 05/21 HADS
Greencastle 0.81 in 0815 AM 05/21 CWOP
Johnstown Airport 0.80 in 0754 AM 05/21 ASOS
Schuylkill Haven 0.79 in 0800 AM 05/21 CWOP
Tremont 0.3 NNW 0.78 in 0800 AM 05/21 COCORAHS
South Philipsburg 0.76 in 0818 AM 05/21 CWOP
New Ringgold 0.76 in 0818 AM 05/21 CWOP
Landingville 0.76 in 0730 AM 05/21 HADS
Milton 0.76 in 0825 AM 05/21 AWS
Milton 0.75 in 0815 AM 05/21 CWOP
Berlin 3.1 NW 0.75 in 0700 AM 05/21 COCORAHS

&&

**METADATA**
:5/21/2026,0754 AM, PA, Cambria, Johnstown Airport, , , 40.3167, -78.8333, RAIN, 0.8, Inch, ASOS, Storm total rainfall,
:5/21/2026,0814 AM, PA, Cambria, Geistown, , , 40.2899, -78.8698, RAIN, 1, Inch, COCORAHS, Storm total rainfall,
:5/21/2026,0818 AM, PA, Centre, South Philipsburg, , , 40.8893, -78.2187, RAIN, 0.76, Inch, CWOP, Storm total rainfall,
:5/21/2026,0749 AM, PA, Centre, Bear Knob, , , 40.9316, -77.9466, RAIN, 0.92, Inch, RAWS, Storm total rainfall,
:5/21/2026,0820 AM, PA, Columbia, Berwick, , , 41.0614, -76.2364, RAIN, 0.84, Inch, AWS, Storm total rainfall,
:5/21/2026,0815 AM, PA, Franklin, Greencastle, , , 39.7723, -77.743, RAIN, 0.81, Inch, CWOP, Storm total rainfall,
:5/21/2026,0815 AM, PA, Northumberland, Milton, , , 41.0307, -76.8483, RAIN, 0.75, Inch, CWOP, Storm total rainfall,
:5/21/2026,0825 AM, PA, Northumberland, Milton, , , 41.0163, -76.8361, RAIN, 0.76, Inch, AWS, Storm total rainfall,
:5/21/2026,0815 AM, PA, Northumberland, Elysburg, , , 40.8653, -76.5493, RAIN, 0.85, Inch, CWOP, Storm total rainfall,
:5/21/2026,0808 AM, PA, Northumberland, Wolf Pond, , , 40.836, -76.5447, RAIN, 1.1, Inch, RAWS, Storm total rainfall,
:5/21/2026,0808 AM, PA, Perry, Big Knob, , , 40.3033, -77.5898, RAIN, 0.82, Inch, RAWS, Storm total rainfall,
:5/21/2026,0825 AM, PA, Perry, 3 W Duncannon, , , 40.4131, -77.0939, RAIN, 0.83, Inch, AWS, Storm total rainfall,
:5/21/2026,0818 AM, PA, Schuylkill, New Ringgold, , , 40.6885, -75.933, RAIN, 0.76, Inch, CWOP, Storm total rainfall,
:5/21/2026,0730 AM, PA, Schuylkill, Landingville, , , 40.6292, -76.125, RAIN, 0.76, Inch, HADS, Storm total rainfall,
:5/21/2026,0800 AM, PA, Schuylkill, Tremont 0.3 NNW, , , 40.6338, -76.3937, RAIN, 0.78, Inch, COCORAHS, Storm total rainfall,
:5/21/2026,0800 AM, PA, Schuylkill, Schuylkill Haven, , , 40.9193, -76.2193, RAIN, 0.79, Inch, CWOP, Storm total rainfall,
:5/21/2026,0825 AM, PA, Schuylkill, Pottsville, , , 40.6799, -76.2163, RAIN, 0.84, Inch, AWS, Storm total rainfall,
:5/21/2026,0816 AM, PA, Schuylkill, Pottsville, , , 40.6872, -76.1732, RAIN, 0.92, Inch, CWOP, Storm total rainfall,
:5/21/2026,0700 AM, PA, Schuylkill, Pottsville 0.6 NNE, , , 40.6882, -76.207, RAIN, 0.98, Inch, COCORAHS, Storm total rainfall,
:5/21/2026,0600 AM, PA, Schuylkill, Valley View 0.5 W, , , 40.6437, -76.5485, RAIN, 0.99, Inch, COCORAHS, Storm total rainfall,
:5/21/2026,0817 AM, PA, Schuylkill, Valley View, , , 40.642, -76.5315, RAIN, 1.04, Inch, CWOP, Storm total rainfall,
:5/21/2026,0815 AM, PA, Snyder, Port Trevorton, , , 40.6763, -76.9013, RAIN, 0.85, Inch, CWOP, Storm total rainfall,
:5/21/2026,0700 AM, PA, Somerset, Berlin 3.1 NW, , , 39.9546, -78.9928, RAIN, 0.75, Inch, COCORAHS, Storm total rainfall,
:5/21/2026,0800 AM, PA, Somerset, Somerset, , , 40, -79.0833, RAIN, 0.88, Inch, COOP, Storm total rainfall,
:5/21/2026,0820 AM, PA, Somerset, HOLLSOPLE, , , 40.1988, -78.9542, RAIN, 0.93, Inch, CWOP, Storm total rainfall,
:5/21/2026,0800 AM, PA, Somerset, Confluence 1 SW, , , 39.8, -79.3667, RAIN, 0.95, Inch, COOP, Storm total rainfall,
:5/21/2026,0819 AM, PA, Somerset, HOLLSOPPLE, , , 40.1992, -78.954, RAIN, 1, Inch, CWOP, Storm total rainfall,
:5/21/2026,0820 AM, PA, Somerset, Somerset, , , 40.0738, -79.17, RAIN, 1.03, Inch, CWOP, Storm total rainfall,
:5/21/2026,0500 AM, PA, Somerset, Hidden Valley, , , 40.042, -79.2566, RAIN, 1.06, Inch, COOP, Storm total rainfall,
:5/21/2026,0500 AM, PA, Somerset, Hidden Valley 0.3 ENE, , , 40.0584, -79.2616, RAIN, 1.06, Inch, COCORAHS, Storm total rainfall,
:5/21/2026,0700 AM, PA, Somerset, Somerset 1.0 WSW, , , 40.0005, -79.0971, RAIN, 1.12, Inch, COCORAHS, Storm total rainfall,
:5/21/2026,0628 AM, PA, Somerset, Rockwood 4.3 W, , , 39.9215, -79.2377, RAIN, 1.16, Inch, COCORAHS, Storm total rainfall,
:5/21/2026,0800 AM, PA, Somerset, Friedens 1.9 WSW, , , 40.0365, -79.0398, RAIN, 1.44, Inch, COCORAHS, Storm total rainfall,
:5/21/2026,0730 AM, PA, Union, 1.1 NW Milton, , , 41.0186, -76.8653, RAIN, 0.82, Inch, HADS, Storm total 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