Alert archive / Pennsylvania / Flash Flood Warnings in 2026
Flash Flood Warning 29, NWS State College, PA
NWS State College, PA issued this flash flood warning at Jul 10, 2026, 4:37 PM EDT for Cumberland County, York 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, 4:37 PM EDT (20:37 UTC)
- Expired
- Jul 10, 2026, 7:45 PM EDT
- In force
- 3 hr
- Issued by
- NWS State College, PA
- Area
- Storm-based polygon
- Flood severity
- None
Counties Cumberland County, PA, York County, PA
The radar
The State College radar (KCCX), 109 km from the middle of the area, began a volume at 20:40 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
Washington/Dulle, VA (KIAD), launched 12:00Z, 8.6 hours before the alert went out and 135 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
- 33 J/kg
- Mixed-layer CIN
- -146 J/kg
- Mixed-layer LCL
- 1313 m above ground
- 0-6 km bulk shear
- 26 kt
- 0-1 km storm-relative helicity
- -25 m²/s²
- 0-3 km storm-relative helicity
- 24 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- -0.0
The text
As transmitted.
644
WGUS51 KCTP 102037
FFWCTP
PAC041-133-102345-
/O.NEW.KCTP.FF.W.0029.260710T2037Z-260710T2345Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service State College PA
437 PM EDT Fri Jul 10 2026
The National Weather Service in State College has issued a
* Flash Flood Warning for...
Central Cumberland County in south central Pennsylvania...
Northwestern York County in south central Pennsylvania...
* Until 745 PM EDT.
* At 437 PM EDT, Doppler radar indicated thunderstorms producing
heavy rain across the warned area. Between 1.5 and 2 inches of
rain have fallen. Additional rainfall amounts up 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...
Carlisle, Mechanicsburg, Plainfield, Schlusser, Boiling Springs,
Dillsburg, Mount Holly Springs, Newville, New Kingstown,
Bloserville, Siddonsburg, Franklintown, Wellsville, Newburg, Penn
State Dickinson School Of Law, Messiah College and Ski Roundtop
Ski Area.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
Be aware of your surroundings and do not drive on flooded roads.
&&
LAT...LON 4023 7751 4027 7724 4020 7699 4014 7687
4003 7694 4007 7712 4007 7713 4014 7757
FLASH FLOOD...RADAR INDICATED
$$
Bowen1 follow-up statement
066
WGUS71 KCTP 102112
FFSCTP
Flash Flood Statement
National Weather Service State College PA
512 PM EDT Fri Jul 10 2026
PAC041-133-102345-
/O.CON.KCTP.FF.W.0029.000000T0000Z-260710T2345Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Cumberland PA-York PA-
512 PM EDT Fri Jul 10 2026
...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 745 PM EDT THIS
EVENING FOR CENTRAL CUMBERLAND AND NORTHWESTERN YORK COUNTIES...
At 512 PM EDT, Doppler radar and automated rain gauges indicated
thunderstorms producing heavy rain between Newville and Dillsburg.
Between 2.5 and 3 inches of rain have fallen. Additional rainfall
amounts up to 1 inch are possible in the warned area. Flash flooding
is already occurring.
HAZARD...Flash flooding caused by thunderstorms.
SOURCE...Radar and automated gauges.
IMPACT...Flash flooding of small creeks and streams, urban areas,
highways, streets and underpasses as well as other poor
drainage and low-lying areas.
Some locations that will experience flash flooding include...
Carlisle, Mechanicsburg, Plainfield, Schlusser, Boiling Springs,
Dillsburg, Mount Holly Springs, Newville, New Kingstown,
Bloserville, Siddonsburg, Franklintown, Wellsville, Newburg, Penn
State Dickinson School Of Law, Messiah College and Ski Roundtop
Ski Area.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
Be aware of your surroundings and do not drive on flooded roads.
&&
LAT...LON 4023 7751 4027 7724 4020 7699 4014 7687
4003 7694 4007 7712 4007 7713 4014 7757
FLASH FLOOD...RADAR AND GAUGE INDICATED
$$
BowenWhat 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, 2:45 PM EDT, 1 hour 52 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, 2:45 PM EDT, 1 hour 52 minutes before
Area Forecast Discussion National Weather Service State College PA 245 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 /18Z FRIDAY THROUGH WEDNESDAY/... Prevailing VFR will be interrupted by bouts of heavy t-storm rain and associated MVFR to IFR visibility restrictions through 23-24Z timeframe. We continue to utilize the PROB30 to account for the relatively brief drops in flight category. Partial clearing, light winds, and residual low level moisture from previous rains will favor areas of fog and low clouds developing overnight into early Saturday. MVFR to IFR conditions are probable at most TAF sites roughly from 05-13Z Saturday. Another round of diurnally driven t-storms are likely over the southern half to 1/3 of the airspace Saturday afternoon. Fog is likely to develop again Saturday night into early Sunday morning. 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...Steinbugl
Hazardous weather outlook, Jul 10, 1:00 PM EDT, 3 hours 37 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, 2 hours 7 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, 1 hour 10 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, 28 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, 1 minute 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.
&&
MJTThe office that day
Everything else NWS State College, PA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 10, 1:50 AM EDT | Flood Watch | CTP | Bedford, Blair, Cambria, Cameron, Centre, Clearfield and 3 more | 20 hr |
| Jul 10, 3:52 PM EDT | Flash Flood Warning | CTP | Lancaster | 113 min |
| Jul 10, 4:09 PM EDT | Special Weather Statement | CTP | Blair | 36 min |
| Jul 10, 4:19 PM EDT | Flash Flood Warning | CTP | Blair, Cambria | 3 hr |
| Jul 10, 4:52 PM EDT | Flash Flood Warning | CTP | Bedford, Fulton | 3 hr |
| Jul 10, 5:03 PM EDT | Special Weather Statement | CTP | Columbia, Montour | 27 min |
| Jul 10, 5:24 PM EDT | Flash Flood Warning | CTP | Adams, Cumberland, Franklin, Fulton, York | 3 hr |
| Jul 10, 6:22 PM EDT | Flash Flood Warning | CTP | Cameron, Elk, McKean | 3 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.