Alert archive / New York / Flash Flood Warnings in 2025

Flash Flood Warning 71, NWS Binghamton, NY

August 24, 20255 counties in New York

NWS Binghamton, NY issued this flash flood warning at Aug 24, 2025, 6:22 PM EDT for 5 counties in New York. It was in force for 3 hr. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Aug 24, 2025, 6:22 PM EDT (22:22 UTC)
Expired
Aug 24, 2025, 9:30 PM EDT
In force
3 hr
Issued by
NWS Binghamton, NY
Area
Storm-based polygon
Flood severity
None

Counties Cayuga County, NY, Cortland County, NY, Madison County, NY, Onondaga County, NY, Tompkins County, NY

The radar

The Binghamton radar (KBGM), 68 km from the middle of the area, began a volume at 22:25 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 nearest sounding before it

Albany, NY (KALY), launched 12:00Z, 10.4 hours before the alert went out and 194 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.

Skew-T log-pSkew-T log-p diagram, Albany, NY at 12:00Z on 2025-08-24Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Albany, NY at 12:00Z on 2025-08-24The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 116 square meters per square second.19395878Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
851 m above ground
0-6 km bulk shear
45 kt
0-1 km storm-relative helicity
116 m²/s²
0-3 km storm-relative helicity
147 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this flash flood 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 flash flood warning went out at Aug 24, 2:50 PM EDT, 3 hours 32 minutes earlier.

Area forecast discussion, Aug 24, 2:50 PM EDT, 3 hours 32 minutes before
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Hazardous weather outlook, Aug 24, 2:52 PM EDT, 3 hours 30 minutes before
Hazardous Weather Outlook
National Weather Service Binghamton NY
252 PM EDT Sun Aug 24 2025

NYZ057-062-PAZ039-040-043-044-047-048-072-251900-
Delaware-Sullivan-Susquehanna-Northern Wayne-Wyoming-Lackawanna-
Luzerne-Pike-Southern Wayne-
252 PM EDT Sun Aug 24 2025

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...Monday through Saturday.

No hazardous weather is expected at this time.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

NYZ009-015>018-022>025-036-037-044>046-055-056-PAZ038-251900-
Northern Oneida-Yates-Seneca-Southern Cayuga-Onondaga-Steuben-
Schuyler-Chemung-Tompkins-Madison-Southern Oneida-Cortland-Chenango-
Otsego-Tioga-Broome-Bradford-
252 PM EDT Sun Aug 24 2025

This Hazardous Weather Outlook is for central New York and
northeast Pennsylvania.

.DAY ONE...This afternoon and tonight.

Isolated strong to severe thunderstorms possible through this evening
with gusty winds being the main threat. Training storms along the
cold front tonight could result in isolated flash flooding.

.DAYS TWO THROUGH SEVEN...Monday through Saturday.

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.

In the hours before

Local storm report, Aug 24, 5:07 PM EDT, 1 hour 15 minutes before
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Local storm report, Aug 24, 5:27 PM EDT, 55 minutes before
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Local storm report, Aug 24, 5:36 PM EDT, 46 minutes before
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Local storm report, Aug 24, 5:43 PM EDT, 39 minutes before
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Local storm report, Aug 24, 6:01 PM EDT, 21 minutes before
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Local storm report, Aug 24, 6:15 PM EDT, 7 minutes before
Preliminary Local Storm Report
National Weather Service Binghamton NY
615 PM EDT Sun Aug 24 2025

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0354 PM     Tstm Wnd Dmg     1 NNW Solvay            43.08N 76.22W
08/24/2025                   Onondaga           NY   Broadcast Media

            A tent collapsed outside of Gate 4 of the
            Great New York State Fair and brought down a
            utility wire onto Sate Fair Boulevard. An
            awning of another stand was damaged as well.
            Time estimated by radar.

&&

The office that day

Everything else NWS Binghamton, NY issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Aug 24, 2:05 PM EDTSevere Thunderstorm WarningBGMOnondaga40 min
Aug 24, 3:17 PM EDTSevere Thunderstorm WarningBGMCayuga, Onondaga43 min
Aug 24, 3:42 PM EDTSevere Thunderstorm Warning Destructive damage threatBGMOnondaga33 min
Aug 24, 4:06 PM EDTSevere Thunderstorm WarningBGMMadison, Oneida, Onondaga54 min
Aug 24, 5:02 PM EDTSevere Thunderstorm WarningBGMCayuga, Cortland, Madison, Onondaga58 min
Aug 24, 6:10 PM EDTSevere Thunderstorm WarningBGMChemung, Schuyler, Steuben, Tompkins65 min
Aug 24, 7:18 PM EDTSpecial Weather StatementBGMChemung42 min
Aug 24, 7:24 PM EDTSevere Thunderstorm WarningBGMChemung, Schuyler, Tioga, Tompkins33 min

Nearby

Flash Flood Warnings in New York, 2025Every flash flood warning in 2025

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.