Alert archive / Pennsylvania / Flash Flood Warnings in 2026
Flash Flood Warning 9, NWS Binghamton, NY
NWS Binghamton, NY issued this flash flood warning at Jun 11, 2026, 8:39 PM EDT for Lackawanna County, Luzerne County, Pennsylvania. It was in force for 2 hr. 1 report 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
- Jun 11, 2026, 8:39 PM EDT (00:39 UTC)
- Expired
- Jun 11, 2026, 10:45 PM EDT
- In force
- 2 hr
- Issued by
- NWS Binghamton, NY
- Area
- Storm-based polygon
- Flood severity
- None
Counties Lackawanna County, PA, Luzerne County, PA
The radar
The Binghamton radar (KBGM), 95 km from the middle of the area, began a volume at 00:40 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Jun 11, 8:41 PM EDT | FLASH FLOOD | 1 Se Scranton, PA | Multiple roads reported to be closed and/or have flash flooding. |
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 one storm report to this flash flood warning; the first came 2 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
Albany, NY (KALY), launched 00:00Z, 0.7 hours before the alert went out and 215 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
- 485 J/kg
- Mixed-layer CIN
- -62 J/kg
- Mixed-layer LCL
- 1591 m above ground
- 0-6 km bulk shear
- 24 kt
- 0-1 km storm-relative helicity
- 90 m²/s²
- 0-3 km storm-relative helicity
- 101 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 3.9
The text
As transmitted.
936
WGUS51 KBGM 120039
FFWBGM
PAC069-079-120245-
/O.NEW.KBGM.FF.W.0009.260612T0039Z-260612T0245Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Binghamton NY
839 PM EDT Thu Jun 11 2026
The National Weather Service in Binghamton has issued a
* Flash Flood Warning for...
Central Lackawanna County in northeastern Pennsylvania...
Northeastern Luzerne County in northeastern Pennsylvania...
* Until 1045 PM EDT.
* At 839 PM EDT, Doppler radar indicated thunderstorms producing
heavy rain across 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...
Scranton, Wilkes-Barre, Carbondale, Pittston, Dunmore, Old Forge,
Archbald, Dickson City, Moosic, Olyphant, Edwardsville, Luzerne,
West Wyoming, Mayfield, Sugar Notch, Glendale, Mount Cobb,
Kingston, Nanticoke and Plains.
This includes the following streams and drainages...
Aylesworth Creek, Lackawanna River, Laurel Run, Gardner Creek,
West Branch Wallenpaupack Creek, Obendoffers Creek, Roaring Brook,
Red Spring Run, White Oak Run, Newport Creek, Green Run, Rush
Brook, Solomon Creek, Grassy Island Creek, South Branch Newport
Creek, Lucky Run, Susquehanna River, Keyser Creek, Toby Creek,
Harveys Creek, Mill Creek, Spring Brook, Coal Creek, Leggetts
Creek, Sugar Notch Run, Monument Creek, Leach Creek, Abrahams
Creek and Lidy Creek.
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 4159 7547 4146 7550 4135 7561 4124 7578
4118 7596 4121 7603 4126 7594 4135 7583
4145 7565
FLASH FLOOD...RADAR INDICATED
$$
AJG1 follow-up statement
714
WGUS71 KBGM 120244
FFSBGM
Flash Flood Statement
National Weather Service Binghamton NY
1044 PM EDT Thu Jun 11 2026
PAC069-079-120254-
/O.EXP.KBGM.FF.W.0009.000000T0000Z-260612T0245Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Lackawanna PA-Luzerne PA-
1044 PM EDT Thu Jun 11 2026
...FLASH FLOOD WARNING WILL EXPIRE AT 1045 PM EDT THIS EVENING FOR
CENTRAL LACKAWANNA AND NORTHEASTERN LUZERNE COUNTIES...
The heavy rain has ended. Flooding is no longer expected to pose a
threat.
&&
LAT...LON 4159 7547 4146 7550 4135 7561 4124 7578
4118 7596 4121 7603 4126 7594 4135 7583
4145 7565
$$
AJGWhat 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 Binghamton, NY wrote its last area forecast discussion before this flash flood warning went out at Jun 11, 7:39 PM EDT, 1 hour earlier. Its key messages:
- 1) High heat and humidity continues today, lasting into Friday. The weekend will be cooler but temperatures will remain above normal. 2) Multiple systems will traverse the area, kicking off scattered thunderstorms across the region today and Friday. Some of these storms could be severe, with damaging winds and hail as the main threats. Saturday will remain dry but another cold front on Sunday will bring a return of showers and storms in the afternoon and evening. 3) A broad upper level trough will bring cooler, more normal temperatures to start next week with a few periods of light rain possible.
Area forecast discussion, Jun 11, 7:39 PM EDT, 1 hour before
Area Forecast Discussion National Weather Service Binghamton NY 739 PM EDT Thu Jun 11 2026 .WHAT HAS CHANGED... Adjusted thunderstorm timing for today, pushing arrival times back by a few hours. Also adjusted thunderstorm chances for Friday the cold front has been forecast to speed up, limiting storm chances north of the Southern Tier. && .KEY MESSAGES... 1) High heat and humidity continues today, lasting into Friday. The weekend will be cooler but temperatures will remain above normal. 2) Multiple systems will traverse the area, kicking off scattered thunderstorms across the region today and Friday. Some of these storms could be severe, with damaging winds and hail as the main threats. Saturday will remain dry but another cold front on Sunday will bring a return of showers and storms in the afternoon and evening. 3) A broad upper level trough will bring cooler, more normal temperatures to start next week with a few periods of light rain possible. && .DISCUSSION... KEY MESSAGE 1... Temperatures have climbed into the mid 80s for most, and are expected to reach the upper 80s to low 90s by mid afternoon. With dewpoints in the upper 60s to low 70s, heat indices will reach the 90s for most. Valley locations across the Southern Tier and Finger Lakes will see values climb above 95F, which prompted the issuance of a Heat Advisory for these areas until 8pm tonight. Temps and dewpoints will remain high tonight, falling into the mid to upper 60s and mid 60s, respectively. Friday will be warm once again, but a cold front is expected to move into the area in the late morning hours, which will limit heating potential across the Finger Lakes and Mohawk Valley. They may see a brief period of upper 80s before the cold front moves through and drops temps back into the low 80s. Areas along and south of the Southern Tier could see temps reach the mid 80s to low 90s during the afternoon hours ahead of the cold front. With dewpoints in the mid to upper 60s, heat indices will climb back into the 90s. Confidence is not high enough to issue a Heat Advisory for tomorrow afternoon for these areas as questions still remain with the timing and speed of the front moving through and if early rainfall limits heating potential. Behind the front, drier and cooler air will move in with highs in the low to mid 80s on Saturday with dewpoints in the 50s. A ridge on Sunday will push temperatures back into the mid to upper 80s before another cold front pushes through during the afternoon hours. KEY MESSAGE 2... The aforementioned heat and humidity will be the fuel that drives thunderstorm development today and Friday. A shortwave trough is currently moving across northern OH, kicking off showers and storms over WPA and WNY. A cap currently remains over our area, but is expected to erode by 3pm. As the shortwave kicks eastward, it will provide the broad lift that, combined with MLCAPE values between 1500-2000 j/kg, will kick off scattered cellular thunderstorms moving into the area by the mid afternoon hours. As the axis of the shortwave moves into the area, the storms should transition into multi cell or linear segments as they progress across the area late this afternoon and evening. The main threat with the storms is expected to be damaging winds and small hail. PWATs in the 1.75-2.0in range indicate heavy downpours with isolated flash flooding possible, especially across portions of the Finger Lakes and Mohawk Valley that saw heavy rain yesterday. Storms should hit the I-81 corridor between 7 and 8pm and exit to the east by 10pm. Friday will see another round of thunderstorms as a cold front pushes into the area from the west. Guidance has sped up the arrival of this cold front, now expected to push into our western areas by the late morning hours. This will limit CAPE values north of the Southern Tier. Vertical wind shear looks to be lacking ahead of and along the front as well, with values only approaching 20kts or so. With the severe storm ingredients somewhat misaligned, severe storms north of the Southern Tier currently look to be isolated at this time. A few storms may be able to become severe if they can tap into a localized area that has higher CAPE values and moisture, allowing strong downbursts to occur when the updrafts cannot hold the rain any longer. The best chance for severe weather looks to be along and east of the I-81 corridor as CAPE values should be the highest here and mid-level winds are forecast to increase, allowing for better storm organization and stronger winds to develop. Main severe weather impacts expected are damaging winds and hail. Rain should move east of the area by the evening, bringing a cooler, dry night. Dry weather remains through Saturday and into Sunday as a ridge moves overhead. A trough approaches Sunday afternoon with an associated cold front that should kick off scattered showers and storms across the area during the afternoon and evening hours. Some of these storms could be severe. KEY MESSAGE 3... Near normal temperatures will return to start next week as a broad trough sits over the northern portion of the country. This will bring a period of beautiful weather with highs in the 70s and dewpoints in the upper 40s to low 50s. Rain returns by mid week as the trough axis swings through the eastern US. && .AVIATION /00Z FRIDAY THROUGH TUESDAY/... Showers and storms continue to move through the region. While thunderstorms have moved through the Central NY terminals, the line has yet to go through AVP but will do so over the next couple of hours. Heavy rain and strong winds are to be expected when the storms move through. Behind the line, light rain is being observed at some of the Central NY terminals. Following the rain, there is potential for lower ceilings and fog overnight. Confidence is highest at ELM and RME, though fog will be possible at all terminals given the added moisture from the recent rainfall. The uncertainty is with the sky cover as if skies do not clear out, then fog may not develop or will be slower to develop. Lingering low ceilings will be possible after 12z though conditions should return to VFR prior to 18z. There is another line of showers and storms expected tomorrow afternoon, there is uncertainty with timing and coverage. As mentioned, strong gusts should be expected at AVP when the line moves through. Otherwise, winds will become calm this evening and overnight. West to northwest winds will gradually pick up throughout the morning. Peak gusts of 15 to 20 kts are expected during the afternoon. Like today, winds could be strong within showers and storms that pass over terminals. Outlook: Friday Night...Mainly VFR; fog and restrictions late overnight. Saturday...Mainly VFR Sunday...Showers and thunderstorms with associated restrictions possible. Sunday night through Monday...Mainly VFR; early morning fog and restrictions possible. Tuesday...Low chance for afternoon showers and thunderstorms and associated restrictions. && .BGM WATCHES/WARNINGS/ADVISORIES... PA...None. NY...None. && DISCUSSION...JTC AVIATION...BTL
Hazardous weather outlook, Jun 11, 7:29 PM EDT, 1 hour 10 minutes before
Hazardous Weather Outlook National Weather Service Binghamton NY 729 PM EDT Thu Jun 11 2026 NYZ024-025-036-044>046-055>057-PAZ038>040-043-044-047-072-122330- Chemung-Tompkins-Madison-Cortland-Chenango-Otsego-Tioga-Broome- Delaware-Bradford-Susquehanna-Northern Wayne-Wyoming-Lackawanna- Luzerne-Southern Wayne- 729 PM EDT Thu Jun 11 2026 ...SEVERE THUNDERSTORM WATCH 315 IN EFFECT UNTIL 10 PM EDT THIS EVENING... This Hazardous Weather Outlook is for central New York and northeast Pennsylvania. .DAY ONE...Tonight. Please listen to NOAA Weather Radio or go to weather.gov on the Internet for more information about the following hazards. Severe Thunderstorm Watch. .DAYS TWO THROUGH SEVEN...Friday through Wednesday. No hazardous weather is expected at this time. .SPOTTER INFORMATION STATEMENT... Spotter activation is not expected at this time. NYZ062-PAZ048-122330- Sullivan-Pike- 729 PM EDT Thu Jun 11 2026 ...SEVERE THUNDERSTORM WATCH 317 IN EFFECT UNTIL MIDNIGHT EDT TONIGHT... This Hazardous Weather Outlook is for central New York and northeast Pennsylvania. .DAY ONE...Tonight. Please listen to NOAA Weather Radio or go to weather.gov on the Internet for more information about the following hazards. Severe Thunderstorm Watch. There is a marginal risk for severe storms today, which may produce heavy rain, damaging winds and hail. .DAYS TWO THROUGH SEVEN...Friday through Wednesday. The thunderstorm risk continues on Friday, as a cold front brings another round of thunderstorms to the area. Some of these storms may become severe. Also, the heat and humidity continues on Friday, with peak heat indices potentially reaching the mid 90s across valley locations. .SPOTTER INFORMATION STATEMENT... Weather spotters are encouraged to report significant weather conditions according to Standard Operating Procedures. Please relay any information about severe weather to the NWS. NYZ009-015>018-022-023-037-122330- Northern Oneida-Yates-Seneca-Southern Cayuga-Onondaga-Steuben- Schuyler-Southern Oneida- 729 PM EDT Thu Jun 11 2026 This Hazardous Weather Outlook is for central New York. .DAY ONE...Tonight. No hazardous weather is expected at this time. .DAYS TWO THROUGH SEVEN...Friday through Wednesday. No hazardous weather is expected at this time. .SPOTTER INFORMATION STATEMENT... Spotter activation is not expected at this time.
In the hours before
Local storm report, Jun 11, 7:41 PM EDT, 58 minutes before
Preliminary Local Storm Report
National Weather Service Binghamton NY
741 PM EDT Thu Jun 11 2026
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0701 PM Tstm Wnd Dmg 1 ENE Stevensville 41.77N 76.17W
06/11/2026 Bradford PA 911 Call Center
Tree down blocking roadway.
&&Local storm report, Jun 11, 7:51 PM EDT, 48 minutes before
Preliminary Local Storm Report
National Weather Service Binghamton NY
751 PM EDT Thu Jun 11 2026
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0735 PM Tstm Wnd Dmg 1 SE Elk Lake 41.74N 75.93W
06/11/2026 Susquehanna PA 911 Call Center
Tree down blocking roadway.
&&Local storm report, Jun 11, 7:52 PM EDT, 47 minutes before
Preliminary Local Storm Report
National Weather Service Binghamton NY
752 PM EDT Thu Jun 11 2026
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0730 PM Tstm Wnd Dmg Montrose 41.83N 75.88W
06/11/2026 Susquehanna PA 911 Call Center
Multiple trees down on roadways in Montrose.
&&Local storm report, Jun 11, 8:15 PM EDT, 24 minutes before
Preliminary Local Storm Report
National Weather Service Binghamton NY
815 PM EDT Thu Jun 11 2026
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0803 PM Tstm Wnd Dmg 2 ENE Lake Como 41.87N 75.30W
06/11/2026 Wayne PA 911 Call Center
Tree down over roadway.
&&Local storm report, Jun 11, 8:26 PM EDT, 13 minutes before
Preliminary Local Storm Report
National Weather Service Binghamton NY
826 PM EDT Thu Jun 11 2026
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0808 PM Tstm Wnd Dmg Glenburn 41.51N 75.74W
06/11/2026 Lackawanna PA 911 Call Center
Tree down over roadway.
&&Local storm report, Jun 11, 8:29 PM EDT, 10 minutes before
Preliminary Local Storm Report
National Weather Service Binghamton NY
829 PM EDT Thu Jun 11 2026
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0826 PM Tstm Wnd Dmg Honesdale 41.58N 75.26W
06/11/2026 Wayne PA 911 Call Center
Trees down over Riverside Drive and Park
Street.
&&The office that day
Everything else NWS Binghamton, NY issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 11, 8:39 PM EDT | Severe Thunderstorm Warning | BGM | Lackawanna, Luzerne, Pike, Wayne | 66 min |
| Jun 11, 9:38 PM EDT | Flash Flood Warning | BGM | Pike | 67 min |
| Jun 12, 2:59 PM EDT | Special Weather Statement | BGM | Susquehanna | 31 min |
| Jun 12, 3:01 PM EDT | Special Weather Statement | BGM | Wayne | 29 min |
| Jun 12, 3:37 PM EDT | Severe Thunderstorm Warning | BGM | Lackawanna, Susquehanna, Wayne | 53 min |
| Jun 12, 4:03 PM EDT | Severe Thunderstorm Warning | BGM | Lackawanna, Pike, Wayne | 57 min |
| Jun 12, 4:21 PM EDT | Severe Thunderstorm Warning | BGM | Wayne | 42 min |
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.