Alert archive / New York / Severe Thunderstorm Warnings in 2017

Severe Thunderstorm Warning 107, NWS Binghamton, NY

July 20, 2017Steuben County, New York

NWS Binghamton, NY issued this severe thunderstorm warning at Jul 20, 2017, 1:57 PM EDT for Steuben County, New York. It was in force for 63 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
Jul 20, 2017, 1:57 PM EDT (17:57 UTC)
Expired
Jul 20, 2017, 3:00 PM EDT
In force
63 min
Issued by
NWS Binghamton, NY
Area
Storm-based polygon
Hail
0.75 in
Wind
70.0 mph

County Steuben County, NY

The radar

The Binghamton radar (KBGM), 115 km from the middle of the area, began a volume at 17:59 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.

IssuedProductOfficeLasted
Jul 20, 1:11 PM EDTSevere Thunderstorm WatchSPC6 hr

The nearest sounding before it

Buffalo Intl Airport, NY (KBUF), launched 12:00Z, 6.0 hours before the alert went out and 130 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, Buffalo Intl Airport, NY at 12:00Z on 2017-07-20Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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, Buffalo Intl Airport, NY at 12:00Z on 2017-07-20The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 122 square meters per square second.1939587897Sfc1 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
2004 m above ground
0-6 km bulk shear
52 kt
0-1 km storm-relative helicity
122 m²/s²
0-3 km storm-relative helicity
131 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 Jul 20, 1:37 PM EDT, 20 minutes earlier.

Area forecast discussion, Jul 20, 1:37 PM EDT, 20 minutes before
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Hazardous weather outlook, Jul 20, 1:53 PM EDT, 4 minutes before
Hazardous Weather Outlook
National Weather Service Binghamton NY
153 PM EDT Thu Jul 20 2017

NYZ024-045-046-055>057-062-PAZ038>040-043-044-047-048-072-211800-
Chemung-Chenango-Otsego-Tioga-Broome-Delaware-Sullivan-Bradford-
Susquehanna-Northern Wayne-Wyoming-Lackawanna-Luzerne-Pike-
Southern Wayne-
153 PM EDT Thu Jul 20 2017

...SEVERE THUNDERSTORM WATCH 424 IN EFFECT UNTIL 8 PM EDT THIS
EVENING...

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

.DAY ONE...This Afternoon and 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.

Thunderstorms will spread into parts of Central New York and
Northeast Pennsylvania late this afternoon through the evening. Some
of the storms could contain damaging winds and heavy rain.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday.

Hazardous weather is not expected at this time.

.SPOTTER INFORMATION STATEMENT...

Spotters are encouraged to report any impacts if strong to severe
thunderstorms develop late this afternoon through evening.

NYZ009-037-211800-
Northern Oneida-Southern Oneida-
153 PM EDT Thu Jul 20 2017

...FLASH FLOOD WATCH IN EFFECT UNTIL 5 PM EDT THIS AFTERNOON...

This Hazardous Weather Outlook is for central New York.

.DAY ONE...This Afternoon and Tonight.

Please listen to NOAA Weather Radio or go to weather.gov on the
Internet for more information about the following hazards.

   Flash Flood Watch.

Thunderstorms are possible late this afternoon through the evening.
Some of the storms could contain strong gusty winds and heavy rain.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday.

Hazardous weather is not expected at this time.

.SPOTTER INFORMATION STATEMENT...

Spotters are encouraged to report any impacts if strong to severe
thunderstorms develop late this afternoon through evening.

NYZ015>018-022-023-025-036-044-211800-
Yates-Seneca-Southern Cayuga-Onondaga-Steuben-Schuyler-Tompkins-
Madison-Cortland-
153 PM EDT Thu Jul 20 2017

...SEVERE THUNDERSTORM WATCH 424 IN EFFECT UNTIL 8 PM EDT THIS
EVENING...
...FLASH FLOOD WATCH IN EFFECT UNTIL 5 PM EDT THIS AFTERNOON...

This Hazardous Weather Outlook is for central New York.

.DAY ONE...This Afternoon and 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.
   Flash Flood Watch.

Thunderstorms will spread into parts of Central New York and
Northeast Pennsylvania late this afternoon through the evening. Some
of the storms could contain damaging winds and heavy rain.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday.

Hazardous weather is not expected at this time.

.SPOTTER INFORMATION STATEMENT...

Spotters are encouraged to report any impacts if strong to severe
thunderstorms develop late this afternoon through evening.

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 20, 1:52 PM EDTFlash Flood WatchBGMCayuga, Cortland, Madison, Oneida, Onondaga, Schuyler and 4 more3 hr
Jul 20, 2:57 PM EDTSevere Thunderstorm WarningBGMChemung, Steuben33 min
Jul 20, 3:00 PM EDTAreal Flood AdvisoryBGMSteuben6 hr
Jul 20, 3:11 PM EDTAreal Flood AdvisoryBGMChemung, Schuyler, Steuben, Tompkins, Yates6 hr
Jul 20, 3:19 PM EDTSevere Thunderstorm WarningBGMChemung, Schuyler, Tioga, Tompkins26 min
Jul 20, 3:28 PM EDTFlash Flood WarningBGMChemung, Schuyler, Steuben, Tioga, Tompkins3 hr
Jul 20, 3:44 PM EDTSevere Thunderstorm WarningBGMBroome, Chemung, Tioga46 min
Jul 20, 3:51 PM EDTFlash Flood WarningBGMBroome, Chemung, Steuben, Tioga6 hr
Jul 20, 4:30 PM EDTAreal Flood AdvisoryBGMBroome6 hr
Jul 20, 5:44 PM EDTSevere Thunderstorm WarningBGMSullivan46 min
Jul 20, 5:51 PM EDTAreal Flood AdvisoryBGMSullivan3 hr
Jul 20, 3:29 PM EDTSevere Thunderstorm WarningBGMBradford61 min
Jul 20, 4:16 PM EDTSevere Thunderstorm WarningBGMBradford14 min
Jul 20, 4:28 PM EDTSevere Thunderstorm WarningBGMBradford, Lackawanna, Susquehanna, Wyoming32 min
Jul 20, 4:47 PM EDTSevere Thunderstorm WarningBGMLuzerne, Wyoming28 min
Jul 20, 4:59 PM EDTSevere Thunderstorm WarningBGMLackawanna, Luzerne, Susquehanna, Wayne, Wyoming46 min
Jul 20, 5:12 PM EDTSevere Thunderstorm WarningBGMLuzerne48 min
Jul 20, 5:15 PM EDTAreal Flood AdvisoryBGMLackawanna, Luzerne, Susquehanna, Wayne, Wyoming3 hr
Jul 20, 5:42 PM EDTSevere Thunderstorm WarningBGMLuzerne63 min
Jul 20, 6:29 PM EDTSevere Thunderstorm WarningBGMPike16 min

Nearby

Severe Thunderstorm Warnings in New York, 2017Every severe thunderstorm warning in 2017

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.