A cold front and upper-level wave moving across the area triggered scattered showers and thunderstorms during the afternoon and early evening. Thunderstorms produced excessive rainfall rates over Chenango County and contributed to areas of flooding on a few roads.
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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. Thunderstorms produced excessive rainfall rates over Chenango County and contributed to areas of flooding on a few roads.
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, 6:55 PM EST, 3 hours 5 minutes earlier.
Area Forecast Discussion National Weather Service Binghamton NY Issued by National Weather Service State College PA 755 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/... 618pm update... Several supercells have developed across CNY. These will likely continue for several more hours so a watch has been issued. 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 THURSDAY/... 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 /00Z FRIDAY THROUGH TUESDAY/... Thunderstorms are making their way through the area with storms moving out of ITH and into BGM and ELM soon. AVP will likely see some storms later this evening. Storms look to remain south of SYR and RME with mainly rain showers that could lead to MVFR conditions at times. Tonight, widespread fog develops tonight with LIFR conditions likely at AVP and ELM and low chance of IFR or worse at BGM and RME. ITH and SYR may have enough wind to keep things mixed. Tomorrow, cigs likely rise to a mix of MVFR and VFR but showers and thunderstorms form again in the afternoon and evening. 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 802 PM EDT Thu Jun 5 2025 NYZ009-015>018-022-023-025-036-037-062-PAZ040-043-044-047-048-072- 070015- Northern Oneida-Yates-Seneca-Southern Cayuga-Onondaga-Steuben- Schuyler-Tompkins-Madison-Southern Oneida-Sullivan-Northern Wayne- Wyoming-Lackawanna-Luzerne-Pike-Southern Wayne- 802 PM EDT Thu Jun 5 2025 This Hazardous Weather Outlook is for central New York and northeast Pennsylvania. .DAY ONE...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. NYZ024-044>046-055>057-PAZ038-039-070015- Chemung-Cortland-Chenango-Otsego-Tioga-Broome-Delaware-Bradford- Susquehanna- 802 PM EDT Thu Jun 5 2025 ...SEVERE THUNDERSTORM WATCH 1 IN EFFECT UNTIL 11 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. 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.
Preliminary Local Storm Report
National Weather Service Binghamton NY
913 PM EDT Thu Jun 5 2025
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0848 PM Tstm Wnd Dmg Unadilla 42.32N 75.32W
06/05/2025 Otsego NY 911 Call Center
Tree down on road (radar estimated time).
&&
ESPreliminary Local Storm Report
National Weather Service Binghamton NY
946 PM EDT Thu Jun 5 2025
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0853 PM Hail 1 NW Unadilla 42.34N 75.33W
06/05/2025 E1.00 Inch Otsego NY Trained Spotter
&&Preliminary Local Storm Report
National Weather Service Binghamton NY
1000 PM EDT Thu Jun 5 2025
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0906 PM Tstm Wnd Dmg 1 E Wells Bridge 42.37N 75.23W
06/05/2025 Otsego NY 911 Call Center
Tree down on Circle Dr.
&&Preliminary Local Storm Report
National Weather Service Binghamton NY
1040 PM EDT Thu Jun 5 2025
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0909 PM Tstm Wnd Dmg Franklin 42.34N 75.17W
06/05/2025 Delaware NY 911 Call Center
Tree down on road.
&&Special Weather Statement
National Weather Service Binghamton NY
Issued by National Weather Service State College PA
1047 PM EDT Thu Jun 5 2025
NYZ062-060330-
Sullivan NY-
1047 PM EDT Thu Jun 5 2025
...A STRONG THUNDERSTORM WILL IMPACT CENTRAL SULLIVAN COUNTY THROUGH
1130 PM EDT...
At 1047 PM EDT, Doppler radar was tracking a strong thunderstorm near
Monticello, moving northeast at 15 mph.
HAZARD...Wind gusts up to 40 mph and half inch 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...
Monticello, Liberty, Fallsburg, Neversink, South Fallsburg,
Woodridge, Swan Lake, Harris, Loch Sheldrake, Hurleyville, Kiamesha,
Woodbourne, Mongaup Valley, Maplewood, Thompsonville, Grahamsville,
Rock Hill, Smallwood, Hasbrouck, and Glen Wild.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If outdoors, consider seeking shelter inside a building.
&&
LAT...LON 4158 7475 4173 7484 4191 7453 4188 7445
4185 7447 4174 7458 4167 7443
TIME...MOT...LOC 0247Z 242DEG 15KT 4169 7472
MAX HAIL SIZE...0.50 IN
MAX WIND GUST...40 MPH
MWGPreliminary Local Storm Report
National Weather Service Binghamton NY
1053 PM EDT Thu Jun 5 2025
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0956 PM Hail 3 NE Bovina Center 42.30N 74.74W
06/05/2025 E1.00 Inch Delaware NY Public
&&The Binghamton radar (KBGM), 40 km away, was scanning. The volume nearest the first event began at 03:01 UTC.
2 flash flood. Local standard time, as filed.
Water was reported over the roadway on County Road 17 and Searles Hill Road.
Water was reported over the roadway on Cooper Schoolhouse 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: 1274566, 1274567.