Latest PA Weather Summary:
795
AWUS81 KCTP 111631
RWSCTP
PAZ004>006-010>012-017>019-024>028-033>037-041-042-045-046-
049>053-056>059-063>066-120645-
Regional Weather Summary
National Weather Service State College PA
1131 AM EST Thu Dec 11 2025
Cold air blowing across the relatively warmer waters of the Great
Lakes will bring a 24 hour period of upslope and lake effect snow
showers. Some of the snow will fall heavy at times across
portions of northern and western Pennsylvania, where Lake Effect
Snow Warnings and Winter Weather Advisories are in effect today
into tonight.
Some of the bands of lake effect snow may reach the lower and
middle Susquehanna Valley and could bring a quick coating to one
inch of snow.
Northwest winds will gust between 35 and 45 mph today. This will
add a significant bite to this cold air outbreak, with wind
chills only recovering to the upper single digits today across the
northern and western mountains, with teens to low 20s elsewhere.
High temperatures this afternoon will range from the lower 20s
across the northwest mountains and Laurel Highlands to the low
30s across much of southeastern PA and the Lower Susquehanna
Valley. Lows tonight will dip into the teens over much of the
northwest half of the state and settle into the low 20s for the
southern valleys of Pennsylvania.
$$
Latest Forecaster's Discussion:
686
FXUS61 KCTP 111743
AFDCTP
Area Forecast Discussion
National Weather Service State College PA
1243 PM EST Thu Dec 11 2025
.SYNOPSIS...
*Windy and colder through today with numerous, narrow bands of
snow showers and brief heavy squalls (mainly across Central and
Northern PA) with significant lake effect snow across the
perennial snowbelt of Warren and McKean Counties.
*Additional bouts of winter weather possible Friday through Sunday
&&
.NEAR TERM /THROUGH TONIGHT/...
Deep and fairly well-aligned Northwesterly flow combined with
high RHs up through 6-8 kft AGL and a 3kft thick layer of
favorable dendritic growth between about 2 and 5 kft AGL will
bring widespread snow showers with narrow bands of brief heavy
squalls. The relatively strong shear in the cloud-bearing/DGZ
layer will help to transport the snow showers across the Mid and
Lower Susq Valley, where practically anyone across the Central
Ridge and Valley Region and Susq Valley could see a quick
coating to one inch of snow (outside of the Wint Weather
Advisory areas. recently issued the first snow squall warning of
the day so far (just to the NE of a KFIG to KUNV line).
The SNSQ parameter signal maximizes risk for narrow LES/Squall
bands across the region near and to the north of I-80 right into
tonight.
Additional, long-duration snow accumulations through tonight
across the northwest snowbelts generally ranges from 3-6" with
locally higher amounts up to 8" or so possible in the most
persistent bands.
Vertical mixing and wind speeds residing in the upper half of
the boundary layer have backed off by about 5-8 kts from the
Wed 00Z/06Z guidance values that pointed toward possible wind
advisory criteria being met. Since few forecast soundings mix
through the level where 40+KT winds reside, peak gusts should be
mainly in the upper 30s and low 40s (mph).
High temps today will be 7-13 deg F lower than Wednesday and
the wind will add a significant bite to this cold air outbreak
with wind chills only recovering to the upper single digits
across the northern and western mountains and teens to low 20s
elsewhere.
Icy spots are likely on roads today, where wet surfaces and
slush from Wednesday`s rain/mixed precip and wet snow has
refrozen in the wake of the cfropa late Wed evening.
&&
.SHORT TERM /FRIDAY THROUGH FRIDAY NIGHT/...
LES should fade out by Friday afternoon; next clipper slides to
the south but could clip the SW mtns with some light snow
by Friday night.
&&
.LONG TERM /SATURDAY THROUGH WEDNESDAY/...
The better chance for lake effect and orographically generated
snow showers comes Saturday into early Sunday.
Models suggest some light snow may be possible on Saturday with
a better signal focusing on Sunday as another/more potent
clipper disturbances translates around an upper trough over the
Great Lakes.
Very cold and windy behind the late weekend system with lake
effect and upslope snow into early next week. There may be some
signs of a brief? thaw heading into the middle of next week.
&&
.AVIATION /18Z THURSDAY THROUGH TUESDAY/...
Lake effect/upslope snow will continue through the day, bringing
periods of snow to all TAF sites except, most likely, MDT and
LNS. While the snow bands are reaching all the way to UNV and
AOO this morning, low-level flow should take on more of a
westerly component this afternoon, helping to direct the snow
bands largely north of Interstate 80. That being said, a few
snow showers will still be possible at JST through the
afternoon. TAF sites that see snow move directly overhead will
likely see brief periods of IFR visibility. Ceilings will
largely be VFR outside of BFD and JST, where MVFR ceilings
should persist for much of the day.
Gusty winds will continue today with northwest winds sustained
between 15 and 25 knots along with gusts of 25 to 35 knots. Lake
effect snow showers continue at BFD and potentially IPT through
the evening and into the overnight hours.
Outlook...
Fri-Mon...Additional rounds of light snow possible with
multiple clipper systems.
Tue...Improvement expected. Generally VFR.
&&
.CLIMATE...
Astronomical winter (solstice) begins at 10:03 a.m. on Sunday,
December 21st.
&&
.CTP WATCHES/WARNINGS/ADVISORIES...
Lake Effect Snow Warning until 4 AM EST Friday for PAZ004-005.
Winter Weather Advisory until 4 AM EST Friday for PAZ006-010-
011-017-037.
Winter Weather Advisory until 7 PM EST this evening for PAZ024-
033.
&&
$$
SYNOPSIS...Lambert/Steinbugl
NEAR TERM...Lambert/Steinbugl
SHORT TERM...Lambert/Steinbugl
LONG TERM...Lambert/Steinbugl
AVIATION...Gartner/Bauco
CLIMATE...Steinbugl
Latest Public Information Statement:
290
NOUS41 KCTP 111417
PNSCTP
PAZ004>006-010>012-017>019-024>028-033>037-041-042-045-046-049>053-056>059-
063>066-120217-
Public Information Statement
National Weather Service State College PA
917 AM EST Thu Dec 11 2025
...2-DAY SNOWFALL REPORTS...
Location Amount Time/Date Provider
...Pennsylvania...
...Bedford County...
Rainsburg 5.0 NNW 0.1 in 0500 AM 12/11 COCORAHS
...Blair County...
Tyrone 1.0 NNW 0.3 in 0745 AM 12/11 COCORAHS
...Cambria County...
Geistown T in 0700 AM 12/11 COCORAHS
...Cameron County...
Stevenson Dam 1.0 in 0700 AM 12/11 COOP
...Centre County...
Port Matilda 2.2 ESE 0.4 in 0700 AM 12/11 COCORAHS
Philipsburg 0.2 in 0700 AM 12/11 COOP
Boalsburg 1.2 ENE 0.1 in 0700 AM 12/11 COCORAHS
State College 0.1 in 0819 AM 12/11
Boalsburg 0.4 E 0.1 in 0830 AM 12/11 COCORAHS
Spring Mills 1.4 S T in 0700 AM 12/11 COCORAHS
State College 1.3 SW T in 0700 AM 12/11 COCORAHS
State College T in 0700 AM 12/11 COOP
...Clearfield County...
Grampian 1.0 in 0600 AM 12/11 COOP
...Clinton County...
Renovo 0.3 in 0700 AM 12/11 COOP
...Cumberland County...
Carlisle 3.3 WSW T in 0700 AM 12/11 COCORAHS
...Dauphin County...
Harrisburg 6.0 NE 0.1 in 0700 AM 12/11 COCORAHS
Hershey 2.1 NW T in 0700 AM 12/11 COCORAHS
...Elk County...
Ridgway 3.0 in 0700 AM 12/11 COOP
...Huntingdon County...
Huntingdon 1.3 N 0.1 in 0700 AM 12/11 COCORAHS
...Lebanon County...
Lebanon 4.8 N 0.5 in 0600 AM 12/11 COCORAHS
Lebanon 1.3 SW 0.1 in 0700 AM 12/11 COCORAHS
Palmyra 2.1 S 0.1 in 0700 AM 12/11 COCORAHS
...Lycoming County...
Jersey Shore 0.7 WSW 1.0 in 0700 AM 12/11 COCORAHS
Williamsport 2.0 NE 0.9 in 0700 AM 12/11 COCORAHS
...McKean County...
Crosby 5.0 in 1100 AM 12/10 Public
...Northumberland County...
Muncy 4.7 SSE 0.7 in 0700 AM 12/11 COCORAHS
...Potter County...
Roulette 1.8 NNE 3.5 in 0700 AM 12/11 COCORAHS
Coudersport 2.0 N 1.0 in 0715 AM 12/11 COCORAHS
...Schuylkill County...
2 WSW Hometown 1.8 in 0545 PM 12/10 Trained Spotter
Tremont 1.3 in 0600 PM 12/10 CO-OP Observer
Tremont 0.3 NNW 1.3 in 0800 AM 12/11 COCORAHS
3 NE Tremont 1.2 in 0552 PM 12/10 Public
1.4 N Mahanoy City 1.2 in 0730 AM 12/11 COOP
Valley View 0.5 W T in 0600 AM 12/11 COCORAHS
...Snyder County...
Selinsgrove 2.6 WNW T in 0700 AM 12/11 COCORAHS
...Somerset County...
Hidden Valley 0.3 ENE 5.0 in 0500 AM 12/11 COCORAHS
Laurel Summit 2.8 in 0600 AM 12/11 COOP
Somerset 1.0 WSW 1.2 in 0700 AM 12/11 COCORAHS
Somerset 1.1 in 0800 AM 12/11 COOP
Confluence 1 SW 0.1 in 0800 AM 12/11 COOP
...Sullivan County...
Laporte 2.3 in 0600 AM 12/11 COOP
...Tioga County...
Covington 2 WSW 3.0 in 0400 AM 12/11 COOP
Westfield 2.4 W 3.0 in 0828 AM 12/11 COCORAHS
...Union County...
Lewisburg T in 0700 AM 12/11 COOP
...Warren County...
Russell 4.7 W 6.5 in 0800 AM 12/11 COCORAHS
Russell 0.7 S 3.2 in 0800 AM 12/11 COCORAHS
&&
**METADATA**
:12/11/2025,0500 AM, PA, Bedford, Rainsburg 5.0 NNW, , , 39.9575, -78.5638, SNOW_48, 0.1, Inch, COCORAHS, 48 hour snowfall,
:12/11/2025,0745 AM, PA, Blair, Tyrone 1.0 NNW, , , 40.6901, -78.2541, SNOW_48, 0.3, Inch, COCORAHS, 48 hour snowfall,
:12/11/2025,0700 AM, PA, Cambria, Geistown, , , 40.2899, -78.8698, SNOW_48, 0.001, Inch, COCORAHS, 48 hour snowfall,
:12/11/2025,0700 AM, PA, Cameron, Stevenson Dam, , , 41.4, -78.0167, SNOW_48, 1, Inch, COOP, 48 hour snowfall,
:12/11/2025,0700 AM, PA, Centre, Spring Mills 1.4 S, , , 40.8348, -77.5626, SNOW_48, 0.001, Inch, COCORAHS, 48 hour snowfall,
:12/11/2025,0700 AM, PA, Centre, State College 1.3 SW, , , 40.7801, -77.8783, SNOW_48, 0.001, Inch, COCORAHS, 48 hour snowfall,
:12/11/2025,0700 AM, PA, Centre, State College, , , 40.7935, -77.8672, SNOW_48, 0.001, Inch, COOP, 48 hour snowfall,
:12/11/2025,0700 AM, PA, Centre, Boalsburg 1.2 ENE, , , 40.7814, -77.7707, SNOW_48, 0.1, Inch, COCORAHS, 48 hour snowfall,
:12/11/2025,0819 AM, PA, Centre, State College, , , 40.7976, -77.8579, SNOW, 0.1, Inch, null, Storm total snowfall,
:12/11/2025,0830 AM, PA, Centre, Boalsburg 0.4 E, , , 40.7736, -77.7847, SNOW_48, 0.1, Inch, COCORAHS, 48 hour snowfall,
:12/11/2025,0700 AM, PA, Centre, Philipsburg, , , 40.8722, -78.2153, SNOW_48, 0.2, Inch, COOP, 48 hour snowfall,
:12/11/2025,0700 AM, PA, Centre, Port Matilda 2.2 ESE, , , 40.7912, -78.0118, SNOW_48, 0.4, Inch, COCORAHS, 48 hour snowfall,
:12/11/2025,0600 AM, PA, Clearfield, Grampian, , , 40.9666, -78.5871, SNOW_48, 1, Inch, COOP, 48 hour snowfall,
:12/11/2025,0700 AM, PA, Clinton, Renovo, , , 41.3333, -77.7333, SNOW_48, 0.3, Inch, COOP, 48 hour snowfall,
:12/11/2025,0700 AM, PA, Cumberland, Carlisle 3.3 WSW, , , 40.1821, -77.2622, SNOW_48, 0.001, Inch, COCORAHS, 48 hour snowfall,
:12/11/2025,0700 AM, PA, Dauphin, Hershey 2.1 NW, , , 40.3022, -76.6745, SNOW_48, 0.001, Inch, COCORAHS, 48 hour snowfall,
:12/11/2025,0700 AM, PA, Dauphin, Harrisburg 6.0 NE, , , 40.3486, -76.8256, SNOW_48, 0.1, Inch, COCORAHS, 48 hour snowfall,
:12/11/2025,0700 AM, PA, Elk, Ridgway, , , 41.4167, -78.75, SNOW_48, 3, Inch, COOP, 48 hour snowfall,
:12/11/2025,0700 AM, PA, Huntingdon, Huntingdon 1.3 N, , , 40.5152, -78.0151, SNOW_48, 0.1, Inch, COCORAHS, 48 hour snowfall,
:12/11/2025,0700 AM, PA, Lebanon, Lebanon 1.3 SW, , , 40.3297, -76.4416, SNOW_48, 0.1, Inch, COCORAHS, 48 hour snowfall,
:12/11/2025,0700 AM, PA, Lebanon, Palmyra 2.1 S, , , 40.2798, -76.5992, SNOW_48, 0.1, Inch, COCORAHS, 48 hour snowfall,
:12/11/2025,0600 AM, PA, Lebanon, Lebanon 4.8 N, , , 40.4099, -76.4158, SNOW_48, 0.5, Inch, COCORAHS, 48 hour snowfall,
:12/11/2025,0700 AM, PA, Lycoming, Williamsport 2.0 NE, , , 41.2571, -77.0085, SNOW_48, 0.9, Inch, COCORAHS, 48 hour snowfall,
:12/11/2025,0700 AM, PA, Lycoming, Jersey Shore 0.7 WSW, , , 41.1954, -77.2792, SNOW_48, 1, Inch, COCORAHS, 48 hour snowfall,
:12/10/2025,1100 AM, PA, McKean, Crosby, , , 41.75, -78.37, SNOW_24, 5.0, Inch, Public, 24 hour snowfall,
:12/11/2025,0700 AM, PA, Northumberland, Muncy 4.7 SSE, , , 41.1361, -76.7651, SNOW_48, 0.7, Inch, COCORAHS, 48 hour snowfall,
:12/11/2025,0715 AM, PA, Potter, Coudersport 2.0 N, , , 41.8033, -78.0169, SNOW_48, 1, Inch, COCORAHS, 48 hour snowfall,
:12/11/2025,0700 AM, PA, Potter, Roulette 1.8 NNE, , , 41.8076, -78.1414, SNOW_48, 3.5, Inch, COCORAHS, 48 hour snowfall,
:12/11/2025,0600 AM, PA, Schuylkill, Valley View 0.5 W, , , 40.6437, -76.5485, SNOW_48, 0.001, Inch, COCORAHS, 48 hour snowfall,
:12/10/2025,0552 PM, PA, Schuylkill, 3 NE Tremont, , , 40.655, -76.3545, SNOW_24, 1.2, Inch, Public, 24 hour snowfall,
:12/11/2025,0730 AM, PA, Schuylkill, 1.4 N Mahanoy City, , , 40.8333, -76.1333, SNOW_48, 1.2, Inch, COOP, 48 hour snowfall,
:12/10/2025,0600 PM, PA, Schuylkill, Tremont, , , 40.6338, -76.3937, SNOW_24, 1.3, Inch, CO-OP Observer, 24 hour snowfall,
:12/11/2025,0800 AM, PA, Schuylkill, Tremont 0.3 NNW, , , 40.6338, -76.3937, SNOW_48, 1.3, Inch, COCORAHS, 48 hour snowfall,
:12/10/2025,0545 PM, PA, Schuylkill, 2 WSW Hometown, , , 40.8148, -76.0312, SNOW_24, 1.75, Inch, Trained Spotter, 24 hour snowfall,
:12/11/2025,0700 AM, PA, Snyder, Selinsgrove 2.6 WNW, , , 40.8173, -76.9097, SNOW_48, 0.001, Inch, COCORAHS, 48 hour snowfall,
:12/11/2025,0800 AM, PA, Somerset, Confluence 1 SW, , , 39.8, -79.3667, SNOW_48, 0.1, Inch, COOP, 48 hour snowfall,
:12/11/2025,0800 AM, PA, Somerset, Somerset, , , 40, -79.0833, SNOW_48, 1.1, Inch, COOP, 48 hour snowfall,
:12/11/2025,0700 AM, PA, Somerset, Somerset 1.0 WSW, , , 40.0005, -79.0971, SNOW_48, 1.2, Inch, COCORAHS, 48 hour snowfall,
:12/11/2025,0600 AM, PA, Somerset, Laurel Summit, , , 40.1694, -79.1393, SNOW_48, 2.8, Inch, COOP, 48 hour snowfall,
:12/11/2025,0500 AM, PA, Somerset, Hidden Valley 0.3 ENE, , , 40.0584, -79.2616, SNOW_48, 5, Inch, COCORAHS, 48 hour snowfall,
:12/11/2025,0600 AM, PA, Sullivan, Laporte, , , 41.4247, -76.4925, SNOW_48, 2.3, Inch, COOP, 48 hour snowfall,
:12/11/2025,0400 AM, PA, Tioga, Covington 2 WSW, , , 41.7333, -77.1167, SNOW_48, 3, Inch, COOP, 48 hour snowfall,
:12/11/2025,0828 AM, PA, Tioga, Westfield 2.4 W, , , 41.9131, -77.5861, SNOW_48, 3, Inch, COCORAHS, 48 hour snowfall,
:12/11/2025,0700 AM, PA, Union, Lewisburg, , , 40.9486, -76.8783, SNOW_48, 0.001, Inch, COOP, 48 hour snowfall,
:12/11/2025,0800 AM, PA, Warren, Russell 0.7 S, , , 41.9313, -79.138, SNOW_48, 3.2, Inch, COCORAHS, 48 hour snowfall,
:12/11/2025,0800 AM, PA, Warren, Russell 4.7 W, , , 41.942, -79.0494, SNOW_48, 6.5, Inch, COCORAHS, 48 hour snowfall,
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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