Alert archive / Pennsylvania / Flash Flood Warnings in 2026
Flash Flood Warning 18, NWS State College, PA
NWS State College, PA issued this flash flood warning at Jul 6, 2026, 6:27 PM EDT for Potter County, Tioga County, Pennsylvania. It was in force for 6 hr. 3 reports came from inside the area while it was in force.
The area
The outline as issued, with what was reported inside it.
The facts
- Issued
- Jul 6, 2026, 6:27 PM EDT (22:27 UTC)
- Expired
- Jul 7, 2026, 12:46 AM EDT
- In force
- 6 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), 106 km from the middle of the area, began a volume at 22:27 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Jul 6, 8:00 PM EDT | FLASH FLOOD | Westfield, PA | Widespread water over roads and flooded homes in Westfield. |
| Jul 6, 8:19 PM EDT | FLASH FLOOD | 3 W Westfield, PA | Residents just south of Potter Brook were evacuated from their homes due to flash flooding, with water up to the first floor of some structures. |
| Jul 6, 8:20 PM EDT | FLASH FLOOD | 3 W Westfield, PA | Water over Main Street and Potter Brook Road. Traffic unable to pass. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
Did it verify
Verified. The Iowa Environmental Mesonet's Cow matched 3 storm reports to this flash flood warning; the first came 93 minutes after it went out.
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 12:00Z, 10.5 hours before the alert went out and 145 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 1136 m above ground
- 0-6 km bulk shear
- 15 kt
- 0-1 km storm-relative helicity
- -4 m²/s²
- 0-3 km storm-relative helicity
- 41 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
208
WGUS51 KCTP 062227
FFWCTP
PAC105-117-070130-
/O.NEW.KCTP.FF.W.0018.260706T2227Z-260707T0130Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service State College PA
627 PM EDT Mon Jul 6 2026
The National Weather Service in State College has issued a
* Flash Flood Warning for...
Northeastern Potter County in north central Pennsylvania...
Northwestern Tioga County in north central Pennsylvania...
* Until 930 PM EDT.
* At 627 PM EDT, Doppler radar indicated thunderstorms producing
heavy rain across the warned area. Up to 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, Westfield, Gaines, Harrison Valley, Keeneyville,
Knoxville, Ulysses and Ski Denton 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 4180 7803 4194 7798 4197 7759 4193 7721
4182 7727 4177 7759 4177 7793
FLASH FLOOD...RADAR INDICATED
$$
Evanego2 follow-up statements
407
WGUS51 KCTP 070112
FFWCTP
PAC105-117-070500-
/O.EXT.KCTP.FF.W.0018.000000T0000Z-260707T0500Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service State College PA
912 PM EDT Mon Jul 6 2026
The National Weather Service in State College has extended the
* Flash Flood Warning for...
Northeastern Potter County in north central Pennsylvania...
Northwestern Tioga County in north central Pennsylvania...
* Until 100 AM EDT.
* At 912 PM EDT, emergency management reported flooding near
Westfield. Between 1 and 3 inches of rain have fallen today and up
to 5 inches of rain over the last 3 days. Additional rainfall
amounts up to one half inch are possible in the warned area before
midnight. Flash flooding is already occurring.
HAZARD...Flash flooding caused by thunderstorms.
SOURCE...Emergency management reported.
IMPACT...Flash flooding of small creeks and streams, urban
areas, highways, streets and underpasses as well as
other poor drainage and low-lying areas.
* Some locations that will experience flash flooding include...
Coudersport, Westfield, Gaines, Harrison Valley, Keeneyville,
Knoxville, Ulysses and Ski Denton Ski Area.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
Be especially cautious at night when it is harder to recognize the
dangers of flooding.
Be aware of your surroundings and do not drive on flooded roads.
&&
LAT...LON 4180 7803 4194 7798 4197 7759 4193 7721
4182 7727 4177 7759 4177 7793
FLASH FLOOD...OBSERVED
$$
Dangelo610
WGUS71 KCTP 070446
FFSCTP
Flash Flood Statement
National Weather Service State College PA
1246 AM EDT Tue Jul 7 2026
PAC105-117-070456-
/O.CAN.KCTP.FF.W.0018.000000T0000Z-260707T0500Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Potter PA-Tioga PA-
1246 AM EDT Tue Jul 7 2026
...FLASH FLOOD WARNING FOR NORTHEASTERN POTTER AND NORTHWESTERN
TIOGA COUNTIES HAS BEEN REPLACED WITH A FLOOD WARNING...
The flash flood warning has been replaced by a general flood warning.
&&
LAT...LON 4180 7803 4194 7798 4197 7759 4193 7721
4182 7727 4177 7759 4177 7793
$$
DangeloWhat 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 6, 3:37 PM EDT, 2 hours 50 minutes earlier. Its key messages:
- 1) LOCALIZED FLASH AND URBAN FLOODING IMPACTS ARE POSSIBLE AGAIN THIS AFTERNOON AND EVENING
Area forecast discussion, Jul 6, 3:37 PM EDT, 2 hours 50 minutes before
Area Forecast Discussion National Weather Service State College PA Issued by National Weather Service Binghamton NY 337 PM EDT Mon Jul 6 2026 .WHAT HAS CHANGED... * THE FLOOD WATCH HAS BEEN EXPANDED IN AREA TO INCLUDE THE NORTHERN TIER OF CENTRAL PA AND EXTENDED IN TIME THROUGH 2 AM TONIGHT. && .KEY MESSAGES... 1) LOCALIZED FLASH AND URBAN FLOODING IMPACTS ARE POSSIBLE AGAIN THIS AFTERNOON AND EVENING && .DISCUSSION... KEY MESSAGE 1: LOCALIZED FLASH AND URBAN FLOODING IMPACTS ARE POSSIBLE AGAIN THIS AFTERNOON AND EVENING WAVES OF LOW PRESSURE MOVING ALONG A STATIONARY FRONTAL ZONE AND INTERACTING WITH A FAVORABLE THERMODYNAMIC ENVIRONMENT WILL CONTINUE TO PROMOTE INITIATION OF SCATTERED SHOWERS AND THUNDERSTORMS THIS AFTERNOON THROUGH THE FIRST HALF OF TONIGHT. THUNDERSTORMS WILL BE CAPABLE OF HIGHLY EFFICIENT RAINFALL RATES WITH REPEAT/TRAINING POTENTIAL. THE GREATEST RISK FOR FLASH FLOODING HAS SHIFTED FROM THE EASTERN INTO THE WEST/SOUTHWEST PORTION OF THE FORECAST AREA (BASED ON THE HREF AND REFS MODEL OUTPUT) WHERE FFGS ARE LOWER AND TERRAIN INFLUENCES ARE MORE IN-PLAY. HOWEVER, CONVECTION IS ALSO FIRING ALONG ZONES OF CONVERGENCE IN THE NORTHERN TIER, SO WE HAVE EXPANDED THE WATCH TO INCLUDE THAT AREA. WITH CAMS SHOWING THE POTENTIAL FOR HEAVY RAIN THROUGH MIDNIGHT, WE HAVE EXTENDED THE END TIME OF THE WATCH TO 06Z TUE. THE SEVERE STORM THREAT ALSO DOES NOT APPEAR TO BE AS ROBUST AS IN PRIOR DAYS (54 SVR+TOR WARNINGS IN THE PAST 3 DAYS). THIS IS REFLECTED IN MOST OF THE AREA IN A GENERAL OR NON-SEVERE TSTM OUTLOOK AND ONLY LEVEL 1/5 MRGL RISK COVERING THE SOUTHWEST THIRD OF THE CWA WHERE HIGHER CAPE AND STEEPER LAPSE RATES WILL BE MAXIMIZED. THE PATTERN FOR THE REST OF THE WEEK CAN BE SUMMARIZED MORE OR LESS BY TYPICAL EARLY JULY UNSETTLED/HUMID SUMMERTIME CONDITIONS WITH A LOW PROBABILITY OF SIGNIFICANT HAZARDOUS WEATHER. && .AVIATION /19Z MONDAY THROUGH SATURDAY/... WITH PERSISTENT EASTERLY FLOW ACROSS THE REGION, MVFR TO IFR CEILINGS ARE LIKELY AT MOST TAF SITES, THOUGH JST AND AOO LIKELY SEE A PERIOD OF VFR CEILINGS THIS AFTERNOON. SHOWERS AND THUNDERSTORMS WILL DEVELOP DURING THE AFTERNOON, BUT INSTABILITY WILL BE MORE LIMITED THAN IT HAS BEEN THE PAST FEW DAYS. SHOWERS AND THUNDERSTORMS WILL PRODUCE VERY HEAVY RAINFALL, LEADING TO REDUCED VISIBILITY AS THEY MOVE OVER ANY AIRFIELDS. ANOTHER NIGHT OF LOW CLOUDS AND FOG APPEARS LIKELY FOR MONDAY NIGHT BEHIND THESE SHOWERS AND STORMS. Outlook... TUE...RESTRICTIONS POSSIBLE IN A.M. FOG AND P.M. T-STORMS. WED...AM FOG POSSIBLE, THEN MOSTLY DRY WITH SLIGHT CHANCE SHRA/TSRA THU-FRI...RESTRICTIONS POSSIBLE IN SHOWERS/STORMS, MOST WIDESPREAD ON FRIDAY. SAT...IMPROVING CONDITIONS && .CTP WATCHES/WARNINGS/ADVISORIES... Flood Watch until 2 AM EDT Tuesday for PAZ004>006-010>012- 017>019-024>028-033>037-041-042-045-046-049>053-056>059- 063>066. && WHAT HAS CHANGED...Colbert KEY MESSAGES...Steinbugl/Colbert DISCUSSION...Steinbugl/Colbert AVIATION...Colbert/Bauco
Hazardous weather outlook, Jul 6, 2:07 PM EDT, 4 hours 20 minutes before
Hazardous Weather Outlook National Weather Service State College PA 207 PM EDT Mon Jul 6 2026 PAZ004>006-010>012-018-019-037-041-042-045-046-049>053-057>059-066- 071815- Warren-McKean-Potter-Elk-Cameron-Northern Clinton-Northern Centre- Southern Centre-Tioga-Northern Lycoming-Sullivan-Southern Clinton- Southern Lycoming-Union-Snyder-Montour-Northumberland-Columbia- Dauphin-Schuylkill-Lebanon-Lancaster- 207 PM EDT Mon Jul 6 2026 ...FLOOD WATCH IN EFFECT UNTIL 2 AM EDT TUESDAY... 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...Tuesday through Sunday. The probability for widespread hazardous weather is low. .SPOTTER INFORMATION STATEMENT... Spotters are encouraged to report significant hazardous weather. PAZ017-024>028-033>036-056-063>065-071815- Clearfield-Cambria-Blair-Huntingdon-Mifflin-Juniata-Somerset-Bedford- Fulton-Franklin-Perry-Cumberland-Adams-York- 207 PM EDT Mon Jul 6 2026 ...FLOOD WATCH IN EFFECT UNTIL 2 AM EDT TUESDAY... 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. Isolated to widely scattered damaging wind gusts will be possible with the strongest storms this afternoon and evening. .DAYS TWO THROUGH SEVEN...Tuesday through Sunday. The probability for widespread hazardous weather is low. .SPOTTER INFORMATION STATEMENT... Spotters are encouraged to report significant hazardous weather. Colbert
In the hours before
Local storm report, Jul 6, 1:56 PM EDT, 4 hours 31 minutes before
Preliminary Local Storm Report
National Weather Service State College PA
156 PM EDT Mon Jul 6 2026
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0943 PM Flash Flood 1 SE Hummelstown 40.26N 76.70W
07/05/2026 Dauphin PA Emergency Mngr
Route 322 was closed between the Middletown
Road exit and Hersheypark Drive due to
flooding.
&&Local storm report, Jul 6, 2:03 PM EDT, 4 hours 24 minutes before
Preliminary Local Storm Report
National Weather Service State College PA
203 PM EDT Mon Jul 6 2026
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
1040 PM Flash Flood 2 NE Lancaster 40.06N 76.28W
07/05/2026 Lancaster PA Emergency Mngr
A water rescue was performed for an
occupied, submerged vehicle in flood waters
near the intersection of Pleasure Road and
Sunnybrook Drive in Lancaster.
&&Local storm report, Jul 6, 5:39 PM EDT, 48 minutes before
Preliminary Local Storm Report
National Weather Service State College PA
539 PM EDT Mon Jul 6 2026
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0538 PM Flash Flood Kane 41.66N 78.81W
07/06/2026 McKean PA 911 Call Center
Two reports of flooded basements.
&&
MMDSpecial weather statement, Jul 6, 6:03 PM EDT, 24 minutes before
Special Weather Statement
National Weather Service State College PA
603 PM EDT Mon Jul 6 2026
PAZ005-010-011-062245-
McKean PA-Cameron PA-Elk PA-
603 PM EDT Mon Jul 6 2026
...A STRONG THUNDERSTORM WILL IMPACT NORTHEASTERN ELK...SOUTH CENTRAL
MCKEAN AND NORTHWESTERN CAMERON COUNTIES THROUGH 645 PM EDT...
At 602 PM EDT, Doppler radar was tracking a strong thunderstorm over
Johnsonburg, moving east at 15 mph.
HAZARD...Wind gusts up to 40 mph and pea size hail.
SOURCE...Radar indicated.
IMPACT...Gusty winds could knock down tree limbs and blow around
unsecured objects. Minor hail damage to vegetation is
possible.
Locations impacted include...
St. Marys, Ridgway, Johnsonburg, Wilcox, James City, East Branch Dam,
and Elk River.
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 4144 7885 4164 7883 4165 7836 4135 7840
TIME...MOT...LOC 2202Z 283DEG 12KT 4155 7867
MAX HAIL SIZE...0.25 IN
MAX WIND GUST...40 MPH
MartinThe office that day
Everything else NWS State College, PA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 5, 8:00 PM EDT | Severe Thunderstorm Warning | CTP | Franklin, Fulton, Huntingdon | 45 min |
| Jul 5, 8:10 PM EDT | Tornado Warning | CTP | Franklin | 19 min |
| Jul 5, 8:18 PM EDT | Severe Thunderstorm Warning | CTP | Dauphin, Lancaster, Lebanon, York | 72 min |
| Jul 5, 8:19 PM EDT | Flash Flood Warning | CTP | Dauphin, York | 3 hr |
| Jul 5, 8:30 PM EDT | Severe Thunderstorm Warning | CTP | Adams, Cumberland, Franklin | 60 min |
| Jul 5, 8:38 PM EDT | Flash Flood Warning | CTP | Centre, Huntingdon | 3 hr |
| Jul 5, 8:49 PM EDT | Flash Flood Warning | CTP | Dauphin, Lancaster, Lebanon, York | 3 hr |
| Jul 5, 9:04 PM EDT | Special Weather Statement | CTP | Centre | 41 min |
| Jul 5, 9:16 PM EDT | Flash Flood Warning | CTP | Adams, Cumberland, Lancaster, York | 3 hr |
| Jul 5, 9:20 PM EDT | Flash Flood Warning | CTP | Lancaster, Lebanon | 2 hr |
| Jul 5, 10:10 PM EDT | Special Weather Statement | CTP | Lancaster, Lebanon | 35 min |
| Jul 5, 11:19 PM EDT | Areal Flood Warning | CTP | Dauphin, York | 3 hr |
| Jul 5, 11:25 PM EDT | Areal Flood Warning | CTP | Dauphin, Lancaster, Lebanon, York | 3 hr |
| Jul 5, 11:28 PM EDT | Areal Flood Warning | CTP | Lancaster, Lebanon | 3 hr |
| Jul 6, 2:57 AM EDT | Flash Flood Warning | CTP | Potter, Tioga | 108 min |
| Jul 6, 4:10 PM EDT | Flash Flood Warning | CTP | Tioga | 2 hr |
| Jul 6, 5:34 PM EDT | Flash Flood Warning | CTP | Elk, McKean | 3 hr |
| Jul 6, 6:03 PM EDT | Special Weather Statement | CTP | Elk | 42 min |
| Jul 6, 6:13 PM EDT | Flash Flood Warning | CTP | Elk | 3 hr |
| Jul 6, 6:34 PM EDT | Severe Thunderstorm Warning | CTP | Cameron, Elk | 41 min |
| Jul 6, 7:08 PM EDT | Severe Thunderstorm Warning | CTP | Cameron, Clearfield, Elk | 52 min |
| Jul 6, 7:50 PM EDT | Flash Flood Warning | CTP | Clearfield | 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.