Alert archive / New York / Severe Thunderstorm Warnings in 2025

Severe Thunderstorm Warning 52, NWS Binghamton, NY

May 17, 2025Chemung County, Steuben County, New York; Bradford County, Pennsylvania

NWS Binghamton, NY issued this severe thunderstorm warning at May 17, 2025, 4:41 PM EDT for Chemung County, Steuben County, New York; Bradford County, Pennsylvania. It was in force for 40 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: May 17, 2025, 4:41 PM EDT (20:41 UTC)
Expired: May 17, 2025, 5:21 PM EDT
In force: 40 min
Issued by: NWS Binghamton, NY
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

Counties Chemung County, NY, Steuben County, NY, Bradford County, PA

The radar

The Binghamton radar (KBGM), 76 km from the middle of the area, began a volume at 20:41 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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Jan 30, 10:22 AM EST	Severe Thunderstorm Watch	SPC	126 days
May 17, 12:34 PM EDT	Severe Thunderstorm Watch	SPC	7 hr

The nearest sounding before it

Buffalo Intl Airport, NY (KBUF), launched 12:00Z, 8.7 hours before the alert went out and 177 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 54 J/kg
Mixed-layer CIN: -40 J/kg
Mixed-layer LCL: 1197 m above ground
0-6 km bulk shear: 28 kt
0-1 km storm-relative helicity: 88 m²/s²
0-3 km storm-relative helicity: 87 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 severe thunderstorm 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 severe thunderstorm warning went out at May 17, 4:33 PM EDT, 8 minutes earlier.

Area forecast discussion, May 17, 4:33 PM EDT, 8 minutes before

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Hazardous weather outlook, May 17, 4:32 PM EDT, 9 minutes before

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In the hours before

Local storm report, May 17, 3:15 PM EDT, 1 hour 26 minutes before

Preliminary Local Storm Report
National Weather Service Binghamton NY
315 PM EDT Sat May 17 2025

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

0227 PM     Tstm Wnd Dmg     2 WSW Memphis           43.08N 76.42W
05/17/2025                   Onondaga           NY   911 Call Center

            Wires down per county dispatch.

&&

Local storm report, May 17, 3:27 PM EDT, 1 hour 14 minutes before

Preliminary Local Storm Report
National Weather Service Binghamton NY
327 PM EDT Sat May 17 2025

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

0241 PM     Tstm Wnd Dmg     1 SW Bayberry           43.14N 76.23W
05/17/2025                   Onondaga           NY   911 Call Center

            Tree down on house.

&&

Local storm report, May 17, 4:00 PM EDT, 41 minutes before

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Local storm report, May 17, 4:08 PM EDT, 33 minutes before

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Local storm report, May 17, 4:13 PM EDT, 28 minutes before

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Local storm report, May 17, 4:16 PM EDT, 25 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
May 17, 8:27 AM EDT	Special Weather Statement	BGM	Oneida	18 min
May 17, 11:39 AM EDT	Special Weather Statement	BGM	Oneida	36 min
May 17, 12:14 PM EDT	Severe Thunderstorm Warning	BGM	Oneida	42 min
May 17, 2:11 PM EDT	Special Weather Statement	BGM	Cayuga	34 min
May 17, 2:22 PM EDT	Severe Thunderstorm Warning	BGM	Onondaga	38 min
May 17, 3:05 PM EDT	Severe Thunderstorm Warning	BGM	Oneida	55 min
May 17, 3:55 PM EDT	Flash Flood Warning	BGM	Oneida	89 min
May 17, 5:14 PM EDT	Special Weather Statement	BGM	Tioga	46 min
May 17, 6:01 PM EDT	Special Weather Statement	BGM	Delaware	29 min
May 17, 7:00 PM EDT	Special Weather Statement	BGM	Sullivan	30 min

Nearby

Severe Thunderstorm Warnings in New York, 2025 Severe Thunderstorm Warnings in Pennsylvania, 2025 Every severe thunderstorm 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.