Alert archive / New York / Severe Thunderstorm Warnings in 2020

Severe Thunderstorm Warning 92, NWS Binghamton, NY

August 23, 2020Broome County, Tioga County, Tompkins County, New York

NWS Binghamton, NY issued this severe thunderstorm warning at Aug 23, 2020, 1:25 PM EDT for Broome County, Tioga County, Tompkins County, New York. It was in force for 35 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
Aug 23, 2020, 1:25 PM EDT (17:25 UTC)
Expired
Aug 23, 2020, 2:00 PM EDT
In force
35 min
Issued by
NWS Binghamton, NY
Area
Storm-based polygon
Hail
1.0 in
Wind
60.0 mph

Counties Broome County, NY, Tioga County, NY, Tompkins County, NY

The radar

The Binghamton radar (KBGM), 19 km from the middle of the area, began a volume at 17:27 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, 5.4 hours before the alert went out and 200 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 2020-08-23Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 41 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 2020-08-23The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 88 square meters per square second.1939Sfc1 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
41 J/kg
Mixed-layer CIN
-214 J/kg
Mixed-layer LCL
1110 m above ground
0-6 km bulk shear
18 kt
0-1 km storm-relative helicity
88 m²/s²
0-3 km storm-relative helicity
127 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 Aug 23, 1:22 PM EDT, 3 minutes earlier.

Area forecast discussion, Aug 23, 1:22 PM EDT, 3 minutes before
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Hazardous weather outlook, Aug 23, 7:39 AM EDT, 5 hours 46 minutes before
Hazardous Weather Outlook
National Weather Service Binghamton NY
739 AM EDT Sun Aug 23 2020

NYZ009-015>018-022>025-036-037-044>046-055>057-062-PAZ038>040-043-
044-047-048-072-241145-
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-
739 AM EDT Sun Aug 23 2020

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

.DAY ONE...Today and tonight.

Hazardous weather is not expected at this time.

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

A cold front is expected to sweep through the region Tuesday,
potentially with a chance for a few strong to severe gusty
thunderstorms. Monitor the forecast for updates as details become
clearer.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

In the hours before

Special weather statement, Aug 23, 12:06 PM EDT, 1 hour 19 minutes before
Special Weather Statement
National Weather Service Binghamton NY
1206 PM EDT Sun Aug 23 2020

NYZ024-055-PAZ038-231630-
Chemung NY-Tioga NY-Bradford PA-
1206 PM EDT Sun Aug 23 2020

...STRONG THUNDERSTORM WILL AFFECT...SOUTHEASTERN CHEMUNG...
SOUTHWESTERN TIOGA AND NORTH CENTRAL BRADFORD COUNTIES UNTIL 1230 PM
EDT...

At 1205 PM EDT, Doppler radar was tracking a strong thunderstorm over
Chemung, moving east at 20 mph.

Small hail and winds in excess of 40 mph will be possible with this
storm.

Locations impacted include...
Chemung, Barton, Sayre, Waverly, Athens, Ridgebury, Litchfield, South
Waverly, Wellsburg and Lockwood.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Heavy rainfall is also occurring with this storm, and may lead to
minor flooding. Do not drive your vehicle through flooded roadways.

&&

LAT...LON 4191 7676 4204 7676 4214 7649 4195 7635
TIME...MOT...LOC 1605Z 250DEG 17KT 4201 7666

BJT
Special weather statement, Aug 23, 12:30 PM EDT, 55 minutes before
Special Weather Statement
National Weather Service Binghamton NY
1230 PM EDT Sun Aug 23 2020

NYZ024-055-PAZ038-231715-
Chemung NY-Tioga NY-Bradford PA-
1230 PM EDT Sun Aug 23 2020

...STRONG THUNDERSTORM WILL AFFECT...SOUTHEASTERN CHEMUNG...
SOUTHWESTERN TIOGA AND NORTHEASTERN BRADFORD COUNTIES UNTIL 115 PM
EDT...

At 1230 PM EDT, Doppler radar was tracking a strong thunderstorm over
Chemung, moving east at 15 mph.

Small hail and wind gusts up to 50 mph will be possible with this
storm.

Locations impacted include...
Chemung, Barton, Sayre, Waverly, Athens, Ridgebury, Litchfield, South
Waverly, Windham and Wellsburg.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Frequent cloud to ground lightning is occurring with this storm.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.

&&

LAT...LON 4189 7674 4207 7675 4220 7636 4192 7626
TIME...MOT...LOC 1630Z 255DEG 12KT 4202 7660

BJT
Special weather statement, Aug 23, 1:10 PM EDT, 15 minutes before
Special Weather Statement
National Weather Service Binghamton NY
110 PM EDT Sun Aug 23 2020

NYZ024-025-055-056-231800-
Chemung NY-Tioga NY-Broome NY-Tompkins NY-
110 PM EDT Sun Aug 23 2020

...STRONG THUNDERSTORMS ACROSS...SOUTHWESTERN BROOME...EASTERN
CHEMUNG...TIOGA AND SOUTHEASTERN TOMPKINS COUNTIES UNTIL 200 PM
EDT...

At 110 PM EDT, Doppler radar was tracking a strong thunderstorm near
Spencer, or 9 miles west of Owego, moving northeast at 15 mph.

Half inch hail and winds in excess of 40 mph will be possible with
this storm.

Locations impacted include...
Endicott, Barton, Waverly, Owego, Erin, Litchfield, Berkshire,
Richford, Newark Valley and Candor.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Frequent cloud to ground lightning is occurring with this storm.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.

This storm may intensify, so be certain to monitor local radio
stations and available television stations for additional information
and possible warnings from the National Weather Service.

&&

LAT...LON 4240 7612 4203 7604 4200 7672 4221 7673
TIME...MOT...LOC 1710Z 244DEG 15KT 4214 7645

BJT
Special weather statement, Aug 23, 1:13 PM EDT, 12 minutes before
Special Weather Statement
National Weather Service Binghamton NY
113 PM EDT Sun Aug 23 2020

NYZ022>024-231800-
Steuben NY-Chemung NY-Schuyler NY-
113 PM EDT Sun Aug 23 2020

...STRONG THUNDERSTORM WILL AFFECT...SOUTHERN SCHUYLER...NORTHWESTERN
CHEMUNG AND EAST CENTRAL STEUBEN COUNTIES UNTIL 200 PM EDT...

At 112 PM EDT, Doppler radar was tracking a strong thunderstorm over
Hornby, or near Corning, moving east at 10 mph.

Half inch hail and wind gusts up to 50 mph will be possible with this
storm.

Locations impacted include...
Elmira, Corning, Big Flats, Horseheads, Elmira Heights, Painted Post,
Catharine, Montour Falls, Hornby and South Corning.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Frequent cloud to ground lightning is occurring with this storm.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.

This storm may intensify, so be certain to monitor local radio
stations and available television stations for additional information
and possible warnings from the National Weather Service.

&&

LAT...LON 4214 7719 4230 7715 4239 7671 4211 7675
TIME...MOT...LOC 1712Z 263DEG 10KT 4223 7706

BJT

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 23, 12:06 PM EDTSpecial Weather StatementBGMChemung24 min
Aug 23, 12:30 PM EDTSpecial Weather StatementBGMTioga45 min
Aug 23, 12:48 PM EDTSevere Thunderstorm WarningBGMTioga16 min
Aug 23, 1:10 PM EDTSpecial Weather StatementBGMTioga50 min
Aug 23, 1:13 PM EDTSpecial Weather StatementBGMChemung47 min
Aug 23, 2:02 PM EDTSpecial Weather StatementBGMTompkins43 min
Aug 23, 2:05 PM EDTSpecial Weather StatementBGMCortland40 min
Aug 23, 2:16 PM EDTSpecial Weather StatementBGMSchuyler29 min
Aug 23, 2:40 PM EDTSpecial Weather StatementBGMChenango35 min
Aug 23, 2:50 PM EDTSpecial Weather StatementBGMMadison25 min
Aug 23, 2:52 PM EDTSpecial Weather StatementBGMTompkins23 min
Aug 23, 3:27 PM EDTSpecial Weather StatementBGMOtsego18 min
Aug 23, 3:35 PM EDTSpecial Weather StatementBGMChenango25 min
Aug 23, 3:52 PM EDTSpecial Weather StatementBGMOtsego38 min
Aug 23, 3:54 PM EDTSevere Thunderstorm WarningBGMChenango, Madison36 min

Nearby

Severe Thunderstorm Warnings in New York, 2020Every severe thunderstorm warning in 2020

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.