Alert archive / Pennsylvania / Flash Flood Warnings in 2026
Flash Flood Warning 33, NWS State College, PA
NWS State College, PA issued this flash flood warning at Jul 10, 2026, 8:18 PM EDT for Potter County, Tioga County, Pennsylvania. It was in force for 3 hr. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Jul 10, 2026, 8:18 PM EDT (00:18 UTC)
- Expired
- Jul 10, 2026, 11:30 PM EDT
- In force
- 3 hr
- Issued by
- NWS State College, PA
- Area
- Storm-based polygon
- Flood severity
- None
Counties Potter County, PA, Tioga County, PA
The radar
The State College radar (KCCX), 89 km from the middle of the area, began a volume at 00:18 UTC, the scan nearest the moment this went out.
Open the radar archive at this moment
The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.
Did it verify
Not verified. The Iowa Environmental Mesonet's Cow found no qualifying storm report inside this flash flood warning while it was in force. That is not proof nothing happened: reports are thin where few people live.
Cow counts a report within 15 km of the polygon while the warning was in force: a tornado for a tornado warning; hail of 1 inch or more, a gust of 58 mph or more or wind damage for a severe thunderstorm warning; a flash flood report for a flash flood warning.
The nearest sounding before it
Buffalo Intl Airport, NY (KBUF), launched 00:00Z, 0.3 hours before the alert went out and 153 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.
- Mixed-layer CAPE
- 2 J/kg
- Mixed-layer CIN
- -67 J/kg
- Mixed-layer LCL
- 1457 m above ground
- 0-6 km bulk shear
- 36 kt
- 0-1 km storm-relative helicity
- 33 m²/s²
- 0-3 km storm-relative helicity
- 67 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
387
WGUS51 KCTP 110018
FFWCTP
PAC105-117-110330-
/O.NEW.KCTP.FF.W.0033.260711T0018Z-260711T0330Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service State College PA
818 PM EDT Fri Jul 10 2026
The National Weather Service in State College has issued a
* Flash Flood Warning for...
Central Potter County in north central Pennsylvania...
Southwestern Tioga County in north central Pennsylvania...
* Until 1130 PM EDT.
* At 818 PM EDT, Doppler radar indicated thunderstorms producing
heavy rain across the warned area. Between 1 and 2 inches of rain
have fallen. Additional rainfall amounts of 1 to 2 inches are
possible in the warned area. Flash flooding is ongoing or expected
to begin shortly.
HAZARD...Flash flooding caused by thunderstorms.
SOURCE...Radar.
IMPACT...Flash flooding of small creeks and streams, urban
areas, highways, streets and underpasses as well as
other poor drainage and low-lying areas.
* Some locations that will experience flash flooding include...
Coudersport, Roulette, Galeton, Denton Hill State Park, Lyman Run
State Park, Cherry Springs State Park, Sweden Valley and Ski
Denton Ski Area.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
Be especially cautious at night when it is harder to recognize the
dangers of flooding.
In hilly terrain there are hundreds of low water crossings which are
potentially dangerous in heavy rain. Do not attempt to cross flooded
roads. Find an alternate route.
&&
LAT...LON 4166 7811 4176 7814 4183 7813 4187 7809
4186 7785 4178 7758 4172 7750 4165 7747
4160 7751 4160 7754 4162 7793 4163 7803
FLASH FLOOD...RADAR INDICATED
$$
Jurewicz1 follow-up statement
920
WGUS71 KCTP 110328
FFSCTP
Flash Flood Statement
National Weather Service State College PA
1128 PM EDT Fri Jul 10 2026
PAC105-117-110338-
/O.EXP.KCTP.FF.W.0033.000000T0000Z-260711T0330Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Potter PA-Tioga PA-
1128 PM EDT Fri Jul 10 2026
...FLASH FLOOD WARNING WILL EXPIRE AT 1130 PM EDT THIS EVENING FOR
CENTRAL POTTER AND SOUTHWESTERN TIOGA COUNTIES...
The heavy rain has ended. Flooding is no longer expected to pose a
threat. Please continue to heed remaining road closures.
&&
LAT...LON 4166 7811 4176 7814 4183 7813 4187 7809
4186 7785 4178 7758 4172 7750 4165 7747
4160 7751 4160 7754 4162 7793 4163 7803
$$
ColbertWhat forecasters said that day
The local office's own words before this flash flood warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS State College, PA wrote its last area forecast discussion before this flash flood warning went out at Jul 10, 8:06 PM EDT, 12 minutes earlier. Its key messages:
- 1) Elevated flash flood risk through this evening 2) Hot and humid pattern set to return for the middle of next week
Area forecast discussion, Jul 10, 8:06 PM EDT, 12 minutes before
Area Forecast Discussion National Weather Service State College PA 806 PM EDT Fri Jul 10 2026 .WHAT HAS CHANGED... *Increasing confidence in the return of hot and humid pattern for the middle of next week && .KEY MESSAGES... 1) Elevated flash flood risk through this evening 2) Hot and humid pattern set to return for the middle of next week && .DISCUSSION... KEY MESSAGE 1: Elevated flash flood risk through this evening Scattered thunderstorms have increased in earnest in response to surface heating and destabilization. Locally heavy rainfall is contributing to flash flood potential that should continue through 00Z/8p this evening. The storms are located in several clusters from northwestern Ohio through central Pennsylvania. The storms are located south of a front over Lake Erie and are in an airmass characterized by 1.5-1.8 inch PW values and ~2000 J/kg MLCAPE, supporting robust updrafts with locally heavy rainfall. MRMS estimated of 1-1.5 inch/hr have already been noted, which isn't surprising given modest steering flow aloft (supporting 10-20 kt storm movement). Flash flooding is likely on at least an isolated basis in the short term - especially in spots of highly sensitive to compromised soils in complex terrain with FFG thresholds below 1 inch/hr. The ongoing flash flood risk focused primarily over west-central PA will continue to expand slightly eastward in response to peak heating/destabilization through the afternoon. The risk will primarily be diurnally driven and may lessen gradually with loss of surface heating after sunset. Isolated to scattered instances of flash flooding are expected, with several areas of storm cell mergers supporting local peaks of 2 inch/hr rain rates and spots of 3 inch rainfall totals. While the primary threat with storms this afternoon will be locally heavy rain and flash flood potential, we still can't rule out an occasional strong to locally damaging wind gust. Focus for locally heavy t-storms shifts to the southern half to 1/3 of central PA on Saturday. Meanwhile, much drier/less humid air will filter into northern PA and be a harbinger for a more pleasant end to the weekend/start to next week. --------------------------------------------------------------- KEY MESSAGE 2: Hot and humid pattern set to return for the middle of next week Dry conditions are expected to prevail for the first half of the week with a strong ridge expected to develop over the middle of the country. Increasing heat/humidity is forecast across central Pennsylvania although there remains some uncertainty with respect to how warm temperatures and/or humidity get across the region. Current forecast favors the hottest temps returning Tue to Thu with highs 85-95F and max heat index 90-100F. Rain chances increase into the latter half of the week. && .AVIATION /00Z SATURDAY THROUGH WEDNESDAY/... Similar to yesterday, convective activity will downtrend over the next few hours as the sun sets. Scattered showers/storms will continue to focus primarily around a quasi-stationary front across the Northern Tier (KBFD) over the next few hours, with spottier activity expected elsewhere given convective overturning in the wake of the earlier storms. Otherwise, mostly cloudy skies will persist tonight, with areas of fog and low stratus once again expected overnight due to recent rainfall & the warm/muggy air mass in place. Gradual improvements to VFR are expected Saturday morning as diurnal mixing deepens the boundary layer, with intermittent MVFR/IFR ceilings possible as low stratus lifts and transitions into a cumulus field. Regarding convective activity, a positively tilted trough nosing in from the northeast will tend to shunt showers/storms to our south where a shortwave will once again be moving across the Mid-Atlantic. With that said, convergence between a surface low over NJ & the front draped across the Northern Tier may serve as a focus for scattered showers and thunderstorms over eastern Pennsylvania (KIPT/KMDT/KLNS) during the afternoon. Higher confidence in convection is closer to the surface low (east of KIPT/KMDT/KLNS), with isolated showers/thunderstorms expected elsewhere across the Commonwealth as the front drifts southward. Outlook... Sun-Wed...Mainly VFR with areas of late night/AM fog. && .CTP WATCHES/WARNINGS/ADVISORIES... Flood Watch until 10 PM EDT this evening for PAZ010-011- 017>019-024>026-033-034. && WHAT HAS CHANGED...Steinbugl KEY MESSAGES...Steinbugl DISCUSSION...Steinbugl AVIATION...Teare
Hazardous weather outlook, Jul 10, 1:00 PM EDT, 7 hours 18 minutes before
Hazardous Weather Outlook National Weather Service State College PA 100 PM EDT Fri Jul 10 2026 PAZ004>006-012-027-028-035>037-041-042-045-046-049>053-056>059- 063>066-111700- Warren-McKean-Potter-Northern Clinton-Mifflin-Juniata-Fulton- Franklin-Tioga-Northern Lycoming-Sullivan-Southern Clinton- Southern Lycoming-Union-Snyder-Montour-Northumberland-Columbia-Perry- Dauphin-Schuylkill-Lebanon-Cumberland-Adams-York-Lancaster- 100 PM EDT Fri Jul 10 2026 This Hazardous Weather Outlook is for central Pennsylvania. .DAY ONE...This afternoon and tonight. Isolated areas of flash flooding and damaging wind gusts are possible this afternoon into the early evening. .DAYS TWO THROUGH SEVEN...Saturday through Thursday. The probability for widespread hazardous weather is low. .SPOTTER INFORMATION STATEMENT... Spotters are encouraged to report significant hazardous weather. PAZ010-011-017>019-024>026-033-034-111700- Elk-Cameron-Clearfield-Northern Centre-Southern Centre-Cambria-Blair- Huntingdon-Somerset-Bedford- 100 PM EDT Fri Jul 10 2026 ...FLOOD WATCH IN EFFECT UNTIL 10 PM EDT THIS EVENING... This Hazardous Weather Outlook is for central Pennsylvania. .DAY ONE...This afternoon and tonight. Please listen to NOAA Weather Radio or go to weather.gov/StateCollege on the internet for more information about the following hazards. Flood Watch. .DAYS TWO THROUGH SEVEN...Saturday through Thursday. The probability for widespread hazardous weather is low. .SPOTTER INFORMATION STATEMENT... Spotters are encouraged to report significant hazardous weather. MRS
In the hours before
Local storm report, Jul 10, 2:30 PM EDT, 5 hours 48 minutes before
Preliminary Local Storm Report
National Weather Service State College PA
230 PM EDT Fri Jul 10 2026
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0220 PM Flood 1 WNW State College 40.79N 77.87W
07/10/2026 Centre PA Public
Several inches of water ponding on North
Atherton Street adjacent to the Penn State
Campus near the bus station.
&&Local storm report, Jul 10, 3:27 PM EDT, 4 hours 51 minutes before
Preliminary Local Storm Report
National Weather Service State College PA
327 PM EDT Fri Jul 10 2026
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0303 PM Flood Lewistown 40.59N 77.57W
07/10/2026 Mifflin PA Emergency Mngr
Ponding of water on the roadway in the
vicinity of East Charles Avenue and South
Main Street.
&&Special weather statement, Jul 10, 4:09 PM EDT, 4 hours 9 minutes before
Special Weather Statement
National Weather Service State College PA
409 PM EDT Fri Jul 10 2026
PAZ024-025-102045-
Blair PA-Cambria PA-
409 PM EDT Fri Jul 10 2026
...A STRONG THUNDERSTORM WILL IMPACT CENTRAL BLAIR AND NORTHEASTERN
CAMBRIA COUNTIES THROUGH 445 PM EDT...
At 409 PM EDT, Doppler radar was tracking a strong thunderstorm 12
miles northwest of Altoona, moving southeast at 20 mph.
HAZARD...Wind gusts up to 50 mph.
SOURCE...Radar indicated.
IMPACT...Gusty winds could knock down tree limbs and blow around
unsecured objects.
Locations impacted include...
Altoona, Hollidaysburg, Northern Cambria, Lakemont, Bellwood, Patton,
Gallitzin, Hastings, Duncansville, Tipton, Carrolltown, Horseshoe
Curve, Sinking Valley, Prince Gallitzin State Park, Canoe Creek State
Park, Tunnelhill, Ashville, Chest Springs, Peoples Natural Gas Field,
and Penn State Altoona.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If outdoors, consider seeking shelter inside a building.
Very heavy rainfall is also occurring with this storm and may lead to
localized flooding. Do not drive your vehicle through flooded
roadways.
Frequent cloud to ground lightning is occurring with this storm.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.
&&
LAT...LON 4072 7880 4073 7856 4059 7818 4056 7820
4054 7817 4035 7837 4069 7883
TIME...MOT...LOC 2009Z 308DEG 17KT 4064 7857
MAX HAIL SIZE...0.00 IN
MAX WIND GUST...50 MPH
BowenLocal storm report, Jul 10, 4:36 PM EDT, 3 hours 42 minutes before
Preliminary Local Storm Report
National Weather Service State College PA
436 PM EDT Fri Jul 10 2026
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0425 PM Flash Flood 1 NNW Hastings 40.67N 78.71W
07/10/2026 Cambria PA 911 Call Center
Multiple flooded basements reported in the
Hastings area, by Deer Rd and Miller St.
&&
MJTSpecial weather statement, Jul 10, 5:03 PM EDT, 3 hours 15 minutes before
Special Weather Statement
National Weather Service State College PA
503 PM EDT Fri Jul 10 2026
PAZ046-049-051>053-102130-
Columbia PA-Southern Lycoming PA-Union PA-Northumberland PA-
Montour PA-
503 PM EDT Fri Jul 10 2026
...A STRONG THUNDERSTORM WILL IMPACT NORTHERN NORTHUMBERLAND...
MONTOUR...SOUTHEASTERN LYCOMING...SOUTHWESTERN COLUMBIA AND EAST
CENTRAL UNION COUNTIES THROUGH 530 PM EDT...
At 502 PM EDT, Doppler radar was tracking a strong thunderstorm near
Milton, moving southeast at 25 mph.
HAZARD...Wind gusts up to 50 mph.
SOURCE...Radar indicated.
IMPACT...Gusty winds could knock down tree limbs and blow around
unsecured objects.
Locations impacted include...
Bloomsburg, Shamokin, Milton, Danville, Muncy, Watsontown, Elysburg,
Riverside, Catawissa, Lightstreet, Almedia, New Columbia, Fernville,
Mechanicsville, Buckhorn, Jerseytown, Rupert, Eyers Grove,
Mooresburg, and Exchange.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If outdoors, consider seeking shelter inside a building.
Very heavy rainfall is also occurring with this storm and may lead to
localized flooding. Do not drive your vehicle through flooded
roadways.
Frequent cloud to ground lightning is occurring with this storm.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.
&&
LAT...LON 4106 7634 4079 7655 4102 7692 4121 7678
TIME...MOT...LOC 2102Z 300DEG 20KT 4108 7674
MAX HAIL SIZE...0.00 IN
MAX WIND GUST...50 MPH
BowenLocal storm report, Jul 10, 5:40 PM EDT, 2 hours 38 minutes before
Preliminary Local Storm Report
National Weather Service State College PA
540 PM EDT Fri Jul 10 2026
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0230 PM Flash Flood 2 NE State College 40.81N 77.84W
07/10/2026 Centre PA Public
Video showed water from Thompson Run flowing
across College Avenue and adjacent parking
lots between Porter Road and Puddintown Road
in College Township, closing at least one
lane of traffic.
&&The office that day
Everything else NWS State College, PA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 11, 2:19 PM EDT | Special Weather Statement | CTP | Schuylkill | 26 min |
| Jul 11, 3:01 PM EDT | Special Weather Statement | CTP | Schuylkill | 44 min |
| Jul 11, 4:11 PM EDT | Severe Thunderstorm Warning | CTP | Lancaster, Lebanon | 49 min |
| Jul 11, 4:55 PM EDT | Severe Thunderstorm Warning | CTP | Lancaster | 42 min |
| Jul 11, 5:15 PM EDT | Flash Flood Warning | CTP | Lancaster | 2 hr |
Nearby
Flash Flood Warnings in Pennsylvania, 2026Every flash flood warning in 2026
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.