A cold front and upper-level wave moving across the area triggered scattered showers and thunderstorms during the afternoon and early evening. While wind shear values were modest, there was sufficient instability for a few storms to become strong to severe producing damaging wind gusts, hail, and heavy rainfall.
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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 cold front and upper-level wave moving across the area triggered scattered showers and thunderstorms during the afternoon and early evening. While wind shear values were modest, there was sufficient instability for a few storms to become strong to severe producing damaging wind gusts, hail, and heavy rainfall. A strong outflow boundary associated with one of the storms also knocked down multiple trees.
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 5, 1:31 PM EST, 1 hour 38 minutes earlier.
Area Forecast Discussion National Weather Service Binghamton NY Issued by National Weather Service State College PA 231 PM EDT Thu Jun 5 2025 .SYNOPSIS... Warm weather will give way to afternoon showers and thunderstorms as a front moves south through the region. A few of these storms will become strong with damaging wind gusts being the main concern. The active weather continues tomorrow as the front stalls with more potential for strong to severe storms tomorrow. Quieter weather begins to return on Sunday. && .NEAR TERM /THROUGH FRIDAY NIGHT/... 130 PM Update... Fair weather cumulus has sprung up across the region this afternoon as things continue to destabilize with day time heating. With a trough approaching from the west, the shear is increasing across western NY into the Finger Lakes region. SPC mesoanalysis has 30 to 40 knots of shear for the I-90 corridor and with clear skies for much of the day, SYR has warmed into the mid 80s with dew points in the mid 60s. 1000 to 2000 J/kg of SBCAPE has developed with weakening capping. A lake breeze is dropping south and that may trigger the first thunderstorms this afternoon along I-90 with storms drifting south with time. LCLs are high, largely over 1000m and approaching 1750m over the Southern Tier and low level lapse rates are over 7 C/km. Water vapor imagery shows a good pocket of dry air aloft, which would help with dry air entrainment with any taller storms. The combination of mid level dry air, high LCLs, and steep low level lapse rates has created an environment favorable for microburst and cold pool development. Hail is less of a concern today with pretty weak mid level lapse rates but strong to damaging wind gusts is possible with any thunderstorm that develops this afternoon and evening. With a slowly strengthening coastal low off of the Mid Atlantic coast tonight, the front that is moving through our region will slow and likely stall with showers and thunderstorms continuing after dark. With the loss of day time heating and the low level lapse rates trending towards a more stable low level environment, the threat for severe thunderstorms dwindles with mainly heavy rain. Tomorrow will be similar to today though with more low level moisture and clouds so low level lapse rates will not be as steep and there will be more mid level moisture. The environment is not quite as favorable for microburst but with a 250 mb jet max nosing in with potential for some better shear near 30 knots across more of the CWA, there is a chance for more stronger storms again in the afternoon. The surface trough will remain in place through Friday night so once again, the threat of showers and thunderstorms persist into the overnight hours though they will not be severe. && .SHORT TERM /SATURDAY THROUGH SUNDAY NIGHT/... 150 PM Update Saturday remains unsettled as a 500 mb shortwave progresses through the region. With PWATs around 1.5 inches and deep warm cloud depths, heavy rain is likely with any storms that develop. How widespread the heavy rain is will be dependent on MCS's that develop in the central plains Friday. Some of the CAMs show an MCS becoming an MCV that brings a large cluster of showers and thunderstorms through though if the MCV cant form, the surface trough will slowly progress east with mainly pop up showers and storms that will be slow movers but more isolated. Shear does look the best on Saturday with the 500 mb shortwave moving through with 30 to 40 knots of 0-6 km shear so once again, isolated stronger storms are possible ahead of the trough. Saturday night into Sunday, the coastal low continues to deepen as it moves out to sea. Strengthening NW flow will help bring in some drier air to bring a reprieve to the showers and thunderstorms briefly. With the 250 mb jet becoming zonal across the Northeast though at the base of a long wave trough, models are hinting at another shortwave moving in by Sunday afternoon with chances of showers an thunderstorms increasing once again. && .LONG TERM /MONDAY THROUGH WEDNESDAY/... 210 PM Update... The long term remains unsettled with zonal flow at the base of a long wave through keeping the high frequency of shortwave troughs leading to shower and thunderstorm chances. Ensemble probabilities of >1000 J/kg of CAPE and >30 knots of shear creeps up to around 20% chance each afternoon. Chances of precipitation were kept for each afternoon Monday through Wednesday with instability developing each afternoon. While the severe threat is going to be dependent on the timing of the shortwave troughs, the heavy rain threat will remain with a warm, moist environment in place and flow coming out of the Gulf maintaining access for these shortwaves to higher precipitable water. && .AVIATION /18Z THURSDAY THROUGH TUESDAY/... Showers and thunderstorms will develop across NY this afternoon and could ITH, BGM, and ELM in the late afternoon. SYR and RME are on the north side of a front so the thunderstorms may stay south so no thunder was included in the TAF and amendments will be made if need be. AVP is too far south of the front for potential impacts until tomorrow morning when the front drops far enough south. Tonight, there is a good chance that low stratus and fog develops across most of the region, especially anywhere that receives rain today. ELM has the best chance at LIFR fog but LIFR fog could develop at both BGM, AVP, and RME if winds go completely calm and skies can clear for a bit. Outlook... Friday through Saturday...Front in vicinity with waves of low pressure will cause occasional showers and associated restrictions. A chance for thunder as well, especially afternoons. Sunday...Low pressure moving east with small chance of lingering showers but improving conditions. Monday into Tuesday...Potential for afternoon showers and thunderstorms with associated restrictions. && .BGM WATCHES/WARNINGS/ADVISORIES... PA...None. NY...Air Quality Alert until 11 PM EDT this evening for NYZ062. && SYNOPSIS...AJG NEAR TERM...AJG SHORT TERM...AJG LONG TERM...AJG AVIATION...AJG
Hazardous Weather Outlook National Weather Service Binghamton NY Issued by National Weather Service State College PA 235 PM EDT Thu Jun 5 2025 NYZ009-015>018-022>025-036-037-044>046-055>057-062-PAZ038>040-043- 044-047-048-072-061845- 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- 235 PM EDT Thu Jun 5 2025 This Hazardous Weather Outlook is for central New York and northeast Pennsylvania. .DAY ONE...This afternoon and tonight. A front will move into the area today, causing clusters of storms in the afternoon through early evening. A few of the storms could be strong to severe with damaging wind gusts and isolated hail. .DAYS TWO THROUGH SEVEN...Friday through Wednesday. Additional showers and embedded storms are forecast for Friday into Saturday. Where repeated batches occur, locally heavy rain could cause ponding of water and isolated flooding especially in poor drainage areas. Also, a few of storms Friday could again be strong to severe with damaging wind gusts. .SPOTTER INFORMATION STATEMENT... Spotter activation may be needed. Please relay any information about severe weather to the NWS.
Special Weather Statement National Weather Service Binghamton NY Issued by National Weather Service State College PA 334 PM EDT Thu Jun 5 2025 NYZ015>018-022>025-052200- Yates-Seneca-Southern Cayuga-Onondaga-Steuben-Schuyler-Chemung- Tompkins- 334 PM EDT Thu Jun 5 2025 * Scattered thunderstorms developing by evening * Scattered thunderstorms will develop in the Finger Lakes, Syracuse area and western portions of the Southern Tier late this afternoon. A few strong thunderstorms with winds of 35-50 mph and small hail are possible in this region. MWG
The Buffalo radar (KBUF), 113 km away, was scanning. The volume nearest the first event began at 20:09 UTC.
17 thunderstorm wind, 7 hail. Local standard time, as filed.
Strong thunderstorm winds resulted in reports of at least one tree and multiple wires down.
Strong thunderstorm winds produced a 69 mph gust at a New York State Mesonet Station.
Strong thunderstorm winds knocked down wires.
Strong thunderstorm winds knocked down a tree onto a roadway near County Road 129 and Hayts Corners East Road.
Strong thunderstorm winds knocked down a wire which was running across the road.
Strong thunderstorm winds knocked down trees and wires.
Strong thunderstorm winds knocked a tree down on wires. The winds were associated with the strong outflow boundary from the storm.
Strong thunderstorm winds knocked down a tree on wires.
Strong thunderstorm winds knocked down a tree on Highway 41.
Strong thunderstorm winds knocked down a tree blocking the entire roadway. The damaging winds were associated with the strong outflow boundary from the storm.
Strong thunderstorm winds knocked down a tree which was blocking a road. The winds were associated with the strong outflow boundary from the storm.
Strong thunderstorm winds knocked down multiple trees on a large property, and a tree that fell onto a farmhouse roof cracked the wooden rafters.
Strong thunderstorm winds resulted in multiple reports of trees down near West Main Street.
Strong thunderstorm winds knocked a tree down on a road.
Strong thunderstorm winds knocked down a tree on Town Line Road.
Strong thunderstorm winds knocked down a tree on Circle Drive.
Strong thunderstorm winds knocked down a tree on a road.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in New York in 2025Every state in 2025This day in weather historyWarnings in New York, June 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: 1265594, 1275438, 1272203, 1271703, 1271704, 1272259, 1272186, 1272197, 1272200, 1272212, 1272214, 1272301, 1272280, 1272283, 1272300, 1272303, 1272375, 1272308, 1272346, 1272347, 1272306, 1272348, 1272349, 1272353.