Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 2026
Severe Thunderstorm Warning 45, NWS Binghamton, NY
NWS Binghamton, NY issued this severe thunderstorm warning at Jun 12, 2026, 4:03 PM EDT for Sullivan County, New York; Lackawanna County, Pike County, Wayne County, Pennsylvania. It was in force for 57 min. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- Jun 12, 2026, 4:03 PM EDT (20:03 UTC)
- Expired
- Jun 12, 2026, 5:00 PM EDT
- In force
- 57 min
- Issued by
- NWS Binghamton, NY
- Area
- Storm-based polygon
- Hail
- 0.75 in
- Wind
- 60.0 mph
Counties Sullivan County, NY, Lackawanna County, PA, Pike County, PA, Wayne County, PA
The radar
The Binghamton radar (KBGM), 100 km from the middle of the area, began a volume at 20:03 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.
The watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Jun 12, 3:04 PM EDT | Severe Thunderstorm Watch | SPC | 5 hr |
The nearest sounding before it
Brookhaven, NY (KOKX), launched 12:00Z, 8.1 hours before the alert went out and 207 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
- 979 m above ground
- 0-6 km bulk shear
- 20 kt
- 0-1 km storm-relative helicity
- 23 m²/s²
- 0-3 km storm-relative helicity
- 41 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
What forecasters said that day
The local office's own words before this severe thunderstorm 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 severe thunderstorm warning went out at Jun 12, 2:25 PM EDT, 1 hour 38 minutes earlier. Its key messages:
- 1) A cold front will finish moving through the area with some stronger thunderstorms, but lingering threat ends by evening. 2) While pleasant conditions are expected through at least midday Sunday, a round of showers and thunderstorms appears likely to wrap up the weekend Sunday afternoon and evening, followed by cooler weather early next week.
Area forecast discussion, Jun 12, 2:25 PM EDT, 1 hour 38 minutes before
Area Forecast Discussion National Weather Service Binghamton NY 225 PM EDT Fri Jun 12 2026 .WHAT HAS CHANGED... With an earlier frontal passage, severe thunderstorm potential will advance more quickly east this afternoon, ceasing by evening. While weekend weather appears quiet tonight through midday Sunday, confidence in increasing for another round of thunderstorms later Sunday. && .KEY MESSAGES... 1) A cold front will finish moving through the area with some stronger thunderstorms, but lingering threat ends by evening. 2) While pleasant conditions are expected through at least midday Sunday, a round of showers and thunderstorms appears likely to wrap up the weekend Sunday afternoon and evening, followed by cooler weather early next week. && .DISCUSSION... KEY MESSAGE 1... A threat of scattered gusty thunderstorms will hold on just a few more hours, shifting to the Catskills and Poconos in mid to late afternoon before ending. Timing of the expected cold frontal passage is advancing quickly, which has somewhat limited heating and thus instability. Convergence is a bit loose as well, so while we are having scattered convective cells, they are not organizing into a solid line. That said, some stronger gusts of 40-50 mph could still occur, and perhaps even a severe cell or two during maximum heating in mid-to-late afternoon towards the Catskills- Poconos where highs will still manage upper 80s in the valleys. Convective Available Potential Energy still has a decent chance of reaching 1500-2000 J/Kg in the Poconos-Catskills so that is where stronger cells could yield gustier and marginally severe downbursts. By early evening, activity will shunt south and east of the area, with a cooler air mass advecting in to achieve lows of mid-upper 50s. KEY MESSAGE 2... A very dry air mass will result in abundant sunshine Saturday. Highs will still reach a few degrees above climatology, yet the air will feel a lot fresher with dewpoints mixing down to the lower to mid 50s. Ridging will hold into Sunday morning to keep things dry. However, a stout wave is projected to drop into the upper Midwest Sunday morning, quickly pivoting around a Canadian low to swing into our region late Sunday. Modest warming will occur ahead of that wave, and an uptick in moisture. While not exactly humid, the forcing with this wave appears favorable because the air mass behind it will be much cooler for early next week. Thus, confidence is increasing that we will have a round a showers and thunderstorms Sunday afternoon-evening. With models depicting 2-6km flow of 40-50 knots, there is some potential for storms to be on the strong side. At the same time, the modest moisture and speed of individual cells should limit rainfall amounts, and thus not anticipating excessive rainfall problems. A markedly cooler air mass will start the week, with mid 60s-mid 70s for highs Monday and just a touch milder Tuesday. Weak waves swinging around the broad cool upper trough could touch off isolated showers by Tuesdsay afternoon, but overall the pattern is mostly dry. Better rain chances wait until midweek onward. && .AVIATION /18Z FRIDAY THROUGH WEDNESDAY/... A front will finish moving through the region by evening, but not before scattered thunderstorms for at least KBGM-KAVP. Other than that, VFR conditions are anticipated to dominate the TAF period. Some uncertainty exists for whether KELM gets brief valley fog around dawn, but enough mixing wind is figured to hold that off as drier air moves into the region. Outlook: Saturday afternoon through midday Sunday...Mainly VFR. Sunday afternoon through early Monday...Showers and thunderstorms with associated restrictions likely Sunday afternoon-evening, followed by lingering low clouds/fog late Sunday night-early Monday morning. Midday Monday through Tuesday night...Mainly VFR, but an isolated shower is possible Tuesday afternoon. Wednesday...Chance for afternoon showers and thunderstorms and associated restrictions. && .BGM WATCHES/WARNINGS/ADVISORIES... PA...None. NY...None. && DISCUSSION...MDP AVIATION...MDP
Hazardous weather outlook, Jun 12, 3:14 PM EDT, 49 minutes before
Hazardous Weather Outlook National Weather Service Binghamton NY 314 PM EDT Fri Jun 12 2026 NYZ009-015>018-022>025-036-037-044>046-055-056-PAZ038-131915- Northern Oneida-Yates-Seneca-Southern Cayuga-Onondaga-Steuben- Schuyler-Chemung-Tompkins-Madison-Southern Oneida-Cortland-Chenango- Otsego-Tioga-Broome-Bradford- 314 PM EDT Fri Jun 12 2026 This Hazardous Weather Outlook is for central New York and northeast Pennsylvania. .DAY ONE...This afternoon and tonight. No hazardous weather is expected at this time. .DAYS TWO THROUGH SEVEN...Saturday through Thursday. A round of gusty thunderstorms is possible Sunday afternoon through evening. Monitor the forecast for updates. .SPOTTER INFORMATION STATEMENT... Spotter activation is not expected at this time. NYZ057-062-PAZ039-040-043-044-047-048-072-131915- Delaware-Sullivan-Susquehanna-Northern Wayne-Wyoming-Lackawanna- Luzerne-Pike-Southern Wayne- 314 PM EDT Fri Jun 12 2026 ...SEVERE THUNDERSTORM WATCH 322 IN EFFECT UNTIL 9 PM EDT THIS EVENING... This Hazardous Weather Outlook is for central New York and northeast Pennsylvania. .DAY ONE...This afternoon and 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...Saturday through Thursday. A round of gusty thunderstorms is possible Sunday afternoon through evening. Monitor the forecast for updates. .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.
In the hours before
Special weather statement, Jun 12, 2:14 PM EDT, 1 hour 49 minutes before
Special Weather Statement
National Weather Service Binghamton NY
214 PM EDT Fri Jun 12 2026
NYZ056-PAZ039-121845-
Broome NY-Susquehanna PA-
214 PM EDT Fri Jun 12 2026
...A STRONG THUNDERSTORM WILL IMPACT SOUTH CENTRAL BROOME AND
NORTHEASTERN SUSQUEHANNA COUNTIES THROUGH 245 PM EDT...
At 214 PM EDT, Doppler radar was tracking a strong thunderstorm over
Kirkwood, or near Binghamton, moving southeast at 15 mph.
HAZARD...Wind gusts up to 40 mph.
SOURCE...Radar indicated.
IMPACT...Gusty winds could knock down tree limbs and blow around
unsecured objects.
Locations impacted include...
Kirkwood, Conklin, Hallstead, Windsor, Great Bend, and East Windsor.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If outdoors, consider seeking shelter inside a building.
&&
LAT...LON 4206 7588 4215 7578 4213 7555 4192 7573
TIME...MOT...LOC 1814Z 296DEG 15KT 4208 7578
MAX HAIL SIZE...0.00 IN
MAX WIND GUST...40 MPH
BTLSpecial weather statement, Jun 12, 2:59 PM EDT, 1 hour 4 minutes before
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Special Weather Statement
National Weather Service Binghamton NY
301 PM EDT Fri Jun 12 2026
NYZ056-057-062-PAZ040-121930-
Broome NY-Sullivan NY-Delaware NY-Northern Wayne PA-
301 PM EDT Fri Jun 12 2026
...A STRONG THUNDERSTORM WILL IMPACT SOUTHEASTERN BROOME...
SOUTHWESTERN DELAWARE...WEST CENTRAL SULLIVAN AND NORTHERN WAYNE
COUNTIES THROUGH 330 PM EDT...
At 301 PM EDT, Doppler radar was tracking a strong thunderstorm over
Hancock, or 8 miles southeast of Deposit, moving southeast at 25 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...
Deposit, Hancock, Starrucca, Hiawatha, Shehawken, Starlight, Stalker,
Fishs Eddy, Harvard, and Equinunk.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If outdoors, consider seeking shelter inside a building.
&&
LAT...LON 4173 7514 4194 7548 4200 7548 4210 7542
4203 7495
TIME...MOT...LOC 1901Z 294DEG 24KT 4197 7531
MAX HAIL SIZE...0.25 IN
MAX WIND GUST...40 MPH
BTLSpecial weather statement, Jun 12, 3:14 PM EDT, 49 minutes before
Special Weather Statement
National Weather Service Binghamton NY
314 PM EDT Fri Jun 12 2026
NYZ046-121945-
Otsego NY-
314 PM EDT Fri Jun 12 2026
...A STRONG THUNDERSTORM WILL IMPACT NORTHEASTERN OTSEGO COUNTY
THROUGH 345 PM EDT...
At 313 PM EDT, Doppler radar was tracking a strong thunderstorm over
Cooperstown, moving east at 25 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...
Middlefield, Hartwick, Cooperstown, Westville, Westford, Cherry
Valley, Bowerstown, Oaksville, Index, and Toddsville.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If outdoors, consider seeking shelter inside a building.
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 4259 7466 4265 7512 4276 7512 4285 7471
4283 7466 4282 7465 4276 7467 4264 7463
TIME...MOT...LOC 1913Z 267DEG 21KT 4271 7495
MAX HAIL SIZE...0.25 IN
MAX WIND GUST...40 MPH
BTLLocal storm report, Jun 12, 3:55 PM EDT, 8 minutes before
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</html>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 | Delaware, Sullivan | 66 min |
| Jun 12, 2:14 PM EDT | Special Weather Statement | BGM | Broome | 31 min |
| Jun 12, 2:59 PM EDT | Special Weather Statement | BGM | Broome | 31 min |
| Jun 12, 3:14 PM EDT | Special Weather Statement | BGM | Otsego | 31 min |
| Jun 12, 3:37 PM EDT | Severe Thunderstorm Warning | BGM | Broome, Delaware | 53 min |
| Jun 12, 4:21 PM EDT | Severe Thunderstorm Warning | BGM | Delaware, Sullivan | 42 min |
| Jun 11, 8:39 PM EDT | Flash Flood Warning | BGM | Lackawanna, Luzerne | 2 hr |
| Jun 11, 9:38 PM EDT | Flash Flood Warning | BGM | Pike | 67 min |
| Jun 12, 3:01 PM EDT | Special Weather Statement | BGM | Wayne | 29 min |
Nearby
Severe Thunderstorm Warnings in Pennsylvania, 2026Severe Thunderstorm Warnings in New York, 2026Every severe thunderstorm 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.