Unstable conditions were present during the afternoon when an upper level trough moved across Northeastern Pennsylvania. Isolated storms formed along the boundary, with a few becoming severe.
Every event with a place to put it. Tap one for its entry below.
Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.
The episode as NWS BGM wrote it up.
Unstable conditions were present during the afternoon when an upper level trough moved across Northeastern Pennsylvania. Isolated storms formed along the boundary, with a few becoming severe. These severe thunderstorms produced damaging winds, knocking down trees and utility wires.
The local office's own words before the first event, 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 the first event at Jun 14, 3:09 PM EST, 1 minute earlier.
Area Forecast Discussion National Weather Service Binghamton NY 409 PM EDT Mon Jun 14 2021 .SYNOPSIS... Scattered showers and thunderstorms are expected this afternoon and evening as a system passes through the area. Another chance of showers and possibly some thunder on Tuesday. High pressure brings dry weather and cooler temperatures for the remainder of the workweek. && .NEAR TERM /THROUGH TUESDAY NIGHT/... A line of showers extending from Northern NY and into Central PA is passing through the area, with thunderstorms on the southern end of the line. The thunderstorms on the southern part of this line will impact NEPA, with a focus on Luzerne County, where instability has been slightly higher. Thunderstorms have also popped up ahead of this line of showers/t-storms. Some thunderstorms have had gusty winds and small hail. Thunderstorm activity should begin to wind down this evening, as the environment becomes more stable. Rain shower chances begin to decrease overnight. Overnight lows will fall into the 50s. Tuesday morning starts off cloudy and chances for rain showers increase once again as a weak system enters the area. Rain chances are best during the afternoon hours. Some rumbles of thunder are also possible with the presence of a few hundreds J/kg of CAPE. High temps will be in the 60s and 70s. Skies and rain showers clear out tomorrow night as high pressure begins to move in. Cooler temperatures are also expected as lows will drop into the upper 40s and low 50s. && .SHORT TERM /WEDNESDAY THROUGH THURSDAY NIGHT/... High pressure will be in place for the short term period. Plenty of sunshine for the mid-week. High temps are a little cooler again on Wednesday as they will only be in the 60s and 70s. Mostly 70s expected for Thursday. Low temps will be in the 40s and 50s for both nights. && .LONG TERM /FRIDAY THROUGH MONDAY/... Friday will start out quiet but sky cover will increase early in the morning ahead of a frontal system that is expected to pass through. Rain chances increase Friday afternoon ahead of this system. The best chances for rain showers will be Friday night. The rain continues into Saturday and thunderstorms may also be possible. This system then begins to move out of the area Saturday night and high pressure begins to move in once again. The second half of the weekend is looking mostly dry with a slight chance for some lingering showers. Early next week is also looking fairly dry but some approaching systems could bring some showers and thunderstorms to the area. A shift in the pattern Friday results in southwesterly flow, bringing warmer air to the region. High temps will be in the 70s and low 80s. Overnight lows are expected to be in the 50s and 60s. && .AVIATION /20Z MONDAY THROUGH SATURDAY/... A line of showers and thunderstorms are moving across NY and PA with the leading edge approaching ELM. A TEMPO is in place over the next 3-4 hours for all terminals for either rain showers or thunderstorms. A TEMPO is in place for AVP for thunderstorms from 22z to 02z as system. VFR conditions are otherwise expected through the early morning hours. Northwesterly flow will bring some low level moisture to the area and ceilings begin to drop around 06z Tuesday morning. Fuel Alternate Ceilings are expected at all terminals, except AVP which will stay in MVFR. Then IFR ceilings at BGM and Below Alternate Mins at ITH and ELM will be possible for a few hours as well. Fog also forms between 07z and 09z at all terminals except SYR. At times, visibilities could be lower than expected. Conditions improve around 14z when ceilings and fog begin to lift. Winds will be generally light except for any gusty winds in showers and thunderstorms. Winds will also become gusty at RME, ELM, and BGM Tuesday morning. Outlook... Tuesday midday through afternoon...Mainly VFR, but a chance of additional showers and thunder/associated brief restrictions. Tuesday night through Friday...Mainly VFR, though valley fog probable at KELM late nights-early mornings. Friday night through Saturday...Chance for showers and thunder/associated restrictions, otherwise VFR. && .BGM WATCHES/WARNINGS/ADVISORIES... PA...None. NY...None. && SYNOPSIS...BTL NEAR TERM...BTL/MDP SHORT TERM...BTL/MPH/MWG LONG TERM...BTL/MPH/MWG AVIATION...BTL/MDP
Hazardous Weather Outlook National Weather Service Binghamton NY 411 AM EDT Mon Jun 14 2021 NYZ009-015>018-022>025-036-037-044>046-055>057-062-PAZ038>040-043- 044-047-048-072-150815- Northern Oneida-Yates-Seneca-Southern Cayuga-Onondaga-Steuben- Schuyler-Chemung-Tompkins-Madison-Southern Oneida-Cortland-Chenango- Otsego-Tioga-Broome-Delaware-Sullivan-Bradford-Susquehanna- Northern Wayne-Wyoming-Lackawanna-Luzerne-Pike-Southern Wayne- 411 AM EDT Mon Jun 14 2021 This Hazardous Weather Outlook is for central New York and northeast Pennsylvania. .DAY ONE...Today and tonight. ...ISOLATED SEVERE THUNDERSTORMS POSSIBLE TODAY... Another disturbance will cause more scattered showers and thunderstorms today, mainly this afternoon through early evening. A few of the strongest storms could contain damaging wind gusts and perhaps hail. Locally heavy rainfall may also occur, with isolated flash flooding possible, especially for locations that already received heavy rain from recent storms. .DAYS TWO THROUGH SEVEN...Tuesday through Sunday. Hazardous weather is not expected at this time. .SPOTTER INFORMATION STATEMENT... Spotter activation may be needed. Please relay any information about severe weather to the NWS while following local, state and CDC guidelines.
Special Weather Statement
National Weather Service Binghamton NY
212 PM EDT Mon Jun 14 2021
NYZ037-141900-
Southern Oneida-
212 PM EDT Mon Jun 14 2021
...A STRONG THUNDERSTORM WILL AFFECT SOUTHEASTERN ONEIDA COUNTY...
At 212 PM EDT, a strong thunderstorm was located over Clinton, or
over New Hartford, moving east at 10 mph.
Winds in excess of 40 mph and pea size hail are possible with this
storm.
Locations impacted include...
Utica, Kirkland, Westmoreland, Paris, Deerfield, Whitesboro, New York
Mills, Yorkville, Clinton and New Hartford.
This storm may intensify, so be certain to monitor local radio
stations and available television stations for additional information
and possible warnings from the National Weather Service.
LAT...LON 4325 7515 4326 7514 4324 7512 4323 7509
4323 7508 4322 7507 4305 7522 4296 7521
4296 7545 4315 7541 4329 7515
TIME...MOT...LOC 1812Z 258DEG 7KT 4305 7533
MPHSpecial Weather Statement
National Weather Service Binghamton NY
226 PM EDT Mon Jun 14 2021
NYZ009-018-036-037-141900-
Onondaga-Southern Oneida-Madison-Northern Oneida-
226 PM EDT Mon Jun 14 2021
...A STRONG THUNDERSTORM WILL AFFECT SOUTHWESTERN ONEIDA...
NORTHWESTERN MADISON AND SOUTHEASTERN ONONDAGA COUNTIES...
At 225 PM EDT, a strong thunderstorm was located over Sullivan, or 8
miles west of Oneida, moving east at 30 mph.
Winds in excess of 40 mph and pea size hail are possible with this
storm.
Locations impacted include...
Syracuse, Rome, De Witt, Sullivan, Oneida, Lenox, Pompey, Verona,
Vienna and Chittenango.
Portions of the New York Thruway or I-90, between Syracuse and
Utica, will be impacted by this storm.
Heavy rainfall is also occurring with this storm, and may cause
localized flooding. Do not drive your vehicle through flooded
roadways.
LAT...LON 4293 7550 4286 7614 4315 7606 4318 7596
4315 7589 4321 7587 4326 7560
TIME...MOT...LOC 1825Z 255DEG 27KT 4305 7584
MPHSpecial Weather Statement National Weather Service Binghamton NY 314 PM EDT Mon Jun 14 2021 NYZ056-PAZ039-141945- Broome-Susquehanna- 314 PM EDT Mon Jun 14 2021 ...A STRONG THUNDERSTORM WILL AFFECT SOUTH CENTRAL BROOME AND NORTHWESTERN SUSQUEHANNA COUNTIES... At 313 PM EDT, a strong thunderstorm was located over Friendsville, or 10 miles south of Endicott, moving east at 25 mph. Winds in excess of 30 mph and pea size hail are possible with this storm. Locations impacted include... Little Meadows, Friendsville, Brackney, Middletown Center, Salt Springs State Park and Wyoanna. This storm may intensify, so be certain to monitor local radio stations and available television stations for additional information and possible warnings from the National Weather Service. LAT...LON 4186 7612 4199 7614 4209 7583 4185 7576 TIME...MOT...LOC 1913Z 256DEG 21KT 4194 7604 BJG
Special Weather Statement
National Weather Service Binghamton NY
317 PM EDT Mon Jun 14 2021
NYZ009-036-037-046-142000-
Otsego-Southern Oneida-Madison-Northern Oneida-
317 PM EDT Mon Jun 14 2021
...A LINE OF STRONG THUNDERSTORMS WILL AFFECT SOUTHEASTERN ONEIDA...
NORTHWESTERN OTSEGO AND SOUTHEASTERN MADISON COUNTIES...
At 317 PM EDT, radar indicated strong thunderstorms were located
along a line extending from near Rome to near Clayville to near
Brookfield. Movement was northeast at 25 mph. Another
isolated strong thunderstorm was located near Hinckley.
Wind gusts up to 50 mph and pea size hail are possible with these
storms.
Heavy rainfall is also occurring with these storms, and may cause
localized flooding. Do not drive your vehicle through flooded
roadways.
These storms may intensify, so be certain to monitor local radio
stations and available television stations for additional information
and possible warnings from the National Weather Service.
LAT...LON 4333 7508 4330 7515 4326 7516 4322 7507
4305 7522 4290 7520 4287 7521 4286 7516
4291 7509 4285 7496 4280 7499 4274 7545
4294 7546 4326 7553 4351 7510
TIME...MOT...LOC 1917Z 238DEG 21KT 4323 7544 4299 7533 4279 7540
MPHSpecial Weather Statement
National Weather Service Binghamton NY
351 PM EDT Mon Jun 14 2021
NYZ046-142015-
Otsego-
351 PM EDT Mon Jun 14 2021
...A STRONG THUNDERSTORM WILL AFFECT NORTHEASTERN OTSEGO COUNTY...
At 350 PM EDT, a strong thunderstorm was located over Cooperstown,
moving northeast at 10 mph.
Wind gusts up to 50 mph and half inch hail are possible with this
storm.
Locations impacted include...
Middlefield, Hartwick, Cooperstown, Westville, Milford, Bowerstown,
Index, Toddsville and Betty And Wilbur Davis State Park.
This storm may intensify, so be certain to monitor local radio
stations and available television stations for additional information
and possible warnings from the National Weather Service.
LAT...LON 4258 7488 4260 7510 4268 7502 4278 7490
4271 7471
TIME...MOT...LOC 1950Z 216DEG 11KT 4271 7491
MPHThe Binghamton radar (KBGM), 75 km away, was scanning. The volume nearest the first event began at 20:10 UTC.
3 thunderstorm wind. Local standard time, as filed.
Strong thunderstorm winds knocked down a few trees on Hunter Highway.
Strong thunderstorm winds knocked down trees and wires near Craig and Miller Roads.
Strong thunderstorm winds knocked down trees and wires.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Pennsylvania in 2021Every state in 2021This day in weather historyWarnings in Pennsylvania, June 2021
NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-09-24. Each event’s entry at NCEI: 964625, 964627, 964628.