A passing cold front generated severe thunderstorms after the atmosphere ahead of it became unstable with high wind shear and steep temperature lapse rates. The scattered severe storms had very damaging winds, up to 100 mph as determined by a storm survey in Susquehanna County, and large hail.
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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.
A passing cold front generated severe thunderstorms after the atmosphere ahead of it became unstable with high wind shear and steep temperature lapse rates. The scattered severe storms had very damaging winds, up to 100 mph as determined by a storm survey in Susquehanna County, and large hail. Numerous trees were knocked down in parts of Northeastern Pennsylvania. The survey team did note that terrain effects made the tree damage look like tornado damage in some areas but all damage was determined to be due to strong winds after accessing radar data.
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 Jul 3, 12:41 PM EST, 1 hour 25 minutes earlier.
Area Forecast Discussion National Weather Service Binghamton NY 141 PM EDT Thu Jul 3 2025 .SYNOPSIS... A cold front will push through the region this afternoon and evening with scattered showers and thunderstorms. A few thunderstorms may be severe with damaging wind gusts and hail. High pressure moves in behind the front, bringing wonderful weather for the 4th of July and into the weekend. && .NEAR TERM /THROUGH FRIDAY NIGHT/... 130 PM Update... Severe thunderstorm watch has been issued. Severe thunderstorms with damaging winds and isolated large hail will be possible in the watch area this afternoon and evening. Also, LCL heights for most of the area is now showing about 1250 meters, however, where current storms are in the Finger Lakes Region the LCL heights are slightly lower and although not expected, can't rule out an isolated tornado. 1230 PM Forecast... Short wave and associated surface cold front will be dropping out of Ontario, Canada and into Central NY this afternoon. This will bring a round of showers and thunderstorms to the region this afternoon and likely will linger into the evening across NE PA. Plenty of sunshine this morning and early afternoon has increased instability out ahead of the front with surface based CAPE values approaching 1500 J/kg across the Southern Tier and into NE PA. Model soundings show inverted V from about H850 to the surface, which will help produce strong wind gusts in any convection this afternoon. SPC Meso Analysis indicating DCAPE values of 800 - 1000 J/kg, so it should be a favorable environment for these storms to produce strong downdrafts. At this time, the most favorable area for severe storms this afternoon appears to still be across the Southern Tier and into NE, but can't rule out an isolated cell across Central NY as well. As the upper trough also swings in late this afternoon and early this evening, midlevel lapse rates increase above 7C/km, and with high 0-6km bulk shear around 45 - 50KT, large hail could be possible, especially in any rotating updrafts. The tornado threat today is very low, as LCL heights are close to 2K meters with all the dry air in the low levels and low level helicity values are also weak. SPC continues to highlight a Slight Risk for severe weather across areas east of I-81 in NY and much of NEPA and a marginal risk still exists elsewhere. It is very possible that a severe thunderstorm watch will be needed for portions of the area for this afternoon and evening, depending how cell development evolves over the next hour or two. The cold front is expected to be through the region by mid evening, with high pressure and clear skies building in behind it. The 4th of July will be an absolutely wonderful weather day with high pressure in control. NW flow into the area from Canada will provide a warm, dry airmass with clear skies for most of the day. May see some elevated smoke high in the atmosphere due to Canadian wildfires, but looking at current upstream METSAT shows the smoke isn't as thick as previous weeks. Temperatures will be in the mid 70 to low 80s and lows down into the low 50s tomorrow night. && .SHORT TERM /SATURDAY THROUGH SUNDAY NIGHT/... 1230 PM Update... Stuck with NBM forecast with no changes and high pressure through the weekend. There still remains a chance to see heat advisory criteria (HI>= 95F) in NY urban areas on Sunday, but heat index values will remain PA criteria (HI>=100F). 305 AM Update High pressure remains in place on Saturday, with sunny skies, low to moderate humidity and above average high temperatures well into the 80s for most locations. No changes for Saturday night, with high pressure still in place but it will be more humid and muggy, with lows in the 60s. Upper level ridge moves over the area on Sunday with a southwesterly return flow in the low to mid levels of the atmosphere. This will bring hot and humid conditions as 1000-500mb thicknesses reach 579dm and 850mb temperatures jump up to +19C. Latest guidance has afternoon highs on Sunday reaching the upper 80s to lower 90s areawide. These temperatures will combine with dew points in the mid to upper 60s to bring heat indices into the low/mid 90s in the valleys. A few locations could get close to heat advisory criteria, and is something that will need to be watched in the coming days. There is a chance for a few showers or isolated t'storms Sunday night as the upper level trough over the central great lakes gradually drifts east...but overall likely staying precipitation free, but humid and muggy with lows in the mid to upper 60s expected. && .LONG TERM /MONDAY THROUGH THURSDAY/... 1230 PM Update... No notable changes have been made to the long term forecast and stuck with NBM through the period. Heat could be an issue on Monday, but there is some potential for thunderstorms in the afternoon and evening that could limit heating. Those showers and storms may continue into the overnight hours on Tuesday as slow moving front sags southward through the region. Behind that front, models diverge in solutions with timing of an upper trough towards the end of the week. At this time, NBM brings in high chance to likely PoPs by Thursday afternoon, but this could significantly change in the coming days if the upper trough is delayed or less amplified than currently advertised. 305 AM Update A rather active summer weather patter is shaping up for much of the long term period. A weak frontal system passed through the area on Monday, bringing chances for scattered showers and thunderstorms to the area. Deep layer, 0-6km shear values are progged to be between 20-30 kts, which is modest, but could still allow for some organized convection to develop in a potentially moderately unstable atmosphere, as MLCAPE reaches 800-1500 J/kg. The heat still remains on Monday, as 850mb temperatures surge to about +20C along and ahead of the front. This will support highs in the mid-80s to lower 90s...with the highest readings over the southern tier and NE PA. Dew points will be quite high in the mid- 60s to lower 70s in the afternoon. This will bring the heat index to the upper 80s to mid-90s...and perhaps even 95 to 100 in the Wyoming Valley region. The slow moving front looks to potentially stall or washout near the Twin Tiers for Tuesday. This will keep a slight chance to chance for showers and isolated thunderstorms in the forecast on Tuesday. Dew points don't fall very much at all, but temperatures should be about 5 degrees lower as light northwest winds take hold. Perhaps a few lingering showers into Tuesday night near and east-southeast of Binghamton otherwise partly cloudy and seasonably mild. Another weak front moving in from the Great Lakes region will keep a chance for showers and isolated t'storms in the forecast Wednesday, along with warm and humid typical mid summer conditions. There is increasing timing and position differences in the 00z deterministic model guidance by the middle to end of next week. With this in mind, decided to keep the official forecast in line with the NBM ensemble weighted guidance. This brings another trough and associated front through the area next Thursday, with high chance to low end likely PoPs for showers and storms. Temperatures remain steady, just a few degrees above average during the day and overnight.&& && .AVIATION /18Z THURSDAY THROUGH TUESDAY/... Cold front will push through the region this afternoon with scattered rain showers and thunderstorms at ITH/ELM/BGM/AVP. Some of these storms could be severe, which would produce IFR conditions and strong to damaging winds if they moved over a terminal. Uncertainty remains as to the exact timing and location of the strongest storms, but tempo have been used at this time, but amendments will be likely. Storms should exit and/or dissipate by the evening, with VFR conditions through the overnight hours expected. Outlook... Friday through Sunday...Mainly VFR. Monday...Scattered showers and thunderstorms possible, with associated restrictions. && .BGM WATCHES/WARNINGS/ADVISORIES... PA...None. NY...None. && SYNOPSIS...DK/MPK NEAR TERM...MPK SHORT TERM...MPK/MJM LONG TERM...MPK/MJM AVIATION...JTC
Hazardous Weather Outlook National Weather Service Binghamton NY 133 PM EDT Thu Jul 3 2025 NYZ015>017-022>025-044>046-055>057-062-PAZ038>040-043-044-047-048- 072-041745- Yates-Seneca-Southern Cayuga-Steuben-Schuyler-Chemung-Tompkins- Cortland-Chenango-Otsego-Tioga-Broome-Delaware-Sullivan-Bradford- Susquehanna-Northern Wayne-Wyoming-Lackawanna-Luzerne-Pike- Southern Wayne- 133 PM EDT Thu Jul 3 2025 ...SEVERE THUNDERSTORM WATCH 484 IN EFFECT UNTIL 10 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...Friday through Wednesday. There is a low probability for widespread hazardous weather. .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. NYZ009-018-036-037-041745- Northern Oneida-Onondaga-Madison-Southern Oneida- 133 PM EDT Thu Jul 3 2025 This Hazardous Weather Outlook is for central New York. .DAY ONE...This afternoon and tonight. No hazardous weather is expected at this time. .DAYS TWO THROUGH SEVEN...Friday through Wednesday. There is a low probability for widespread hazardous weather. .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.
The Binghamton radar (KBGM), 28 km away, was scanning. The volume nearest the first event began at 19:06 UTC.
10 thunderstorm wind. Local standard time, as filed.
Strong thunderstorm winds knocked down multiple trees and wires down in Silver Lake Township.
Strong thunderstorm winds knocked down trees in the area. One tree landed on a house and another fell onto a road.
Strong thunderstorm winds knocked multiple trees and wires down on Oakhill Road.
Widespread tree damage that was consistent with 65 to|85 mph winds occurred throughout the Oakland and Susquehanna |Depot, PA area due to a long tracking supercell that caused a|large downburst. There were enhanced areas of tree damage where |local terrain effects caused funneling of winds and eddies to |form. The winds were noticeably higher in these areas, peaking at|90 to 100 mph. Some locations where these more intense funneling |winds occurred were along Oak Hill Road and Skinner Hill Road in |Oakland and in several drainages aligning from northwest to |southeast with the storm motion.
Also, near Boyden Street in Oakland there were several soft and |hardwood trees snapped 20 feet above the trunk. Finally, along |Turnpike Street in Susquehanna Depot, the cemetery had several |large pine trees snapped 15 feet above the trunk and a large maple|that was snapped. Multiple houses were damaged. The damage in these areas showed signs of rotation likely was caused from winds interacting with the |terrain and localized wind speeds up to 100 mph.
Strong thunderstorm winds knocked down multiple trees and wires.
Strong thunderstorm winds knocked down numerous trees.
Strong thunderstorm winds knocked down numerous trees.
Strong thunderstorm winds knocked down multiple trees and wires.
Strong thunderstorm winds knocked down a tree near the intersection of Wilcox and Galloway Roads.
Strong thunderstorm winds knocked down trees on wires on State Route 92.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Pennsylvania in 2025Every state in 2025This day in weather historyWarnings in Pennsylvania, July 2025
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: 1276458, 1276454, 1276453, 1275497, 1275501, 1275499, 1275502, 1275503, 1275505, 1275508.