Alert archive / New York / Severe Thunderstorm Warnings in 2020

Severe Thunderstorm Warning 81, NWS Albany, NY

August 2, 2020Hamilton County, Herkimer County, New York

NWS Albany, NY issued this severe thunderstorm warning at Aug 2, 2020, 3:13 PM EDT for Hamilton County, Herkimer County, New York. It was in force for 62 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 2, 2020, 3:13 PM EDT (19:13 UTC)
Expired
Aug 2, 2020, 4:15 PM EDT
In force
62 min
Issued by
NWS Albany, NY
Area
Storm-based polygon
Tornado
Possible
Hail
0.75 in
Wind
60.0 mph

Counties Hamilton County, NY, Herkimer County, NY

The radar

The Ft Drum radar (KTYX), 80 km from the middle of the area, began a volume at 19:16 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
Aug 2, 3:10 PM EDTTornado WatchSPC7 hr

The nearest sounding before it

Albany, NY (KALY), launched 12:00Z, 7.2 hours before the alert went out and 119 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 2020-08-02Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 60 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 2020-08-02The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 102 square meters per square second.193958Sfc1 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
60 J/kg
Mixed-layer CIN
-29 J/kg
Mixed-layer LCL
925 m above ground
0-6 km bulk shear
26 kt
0-1 km storm-relative helicity
102 m²/s²
0-3 km storm-relative helicity
206 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 Albany, NY wrote its last area forecast discussion before this severe thunderstorm warning went out at Aug 2, 1:20 PM EDT, 1 hour 53 minutes earlier.

Area forecast discussion, Aug 2, 1:20 PM EDT, 1 hour 53 minutes before
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Hazardous weather outlook, Aug 2, 4:27 AM EDT, 10 hours 46 minutes before
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<body>
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    <section class="card" role="status" aria-live="polite">
      <div class="status" id="status">Temporary Notice</div>
      <h1 id="headline">This service is currently unavailable.</h1>
      <p id="message1">
        The site you requested is temporarily down for maintenance or an unexpected outage.
      </p>
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        Please try again in a few minutes.
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In the hours before

Special weather statement, Aug 2, 1:25 PM EDT, 1 hour 48 minutes before
Special Weather Statement
National Weather Service Albany NY
125 PM EDT Sun Aug 2 2020

CTZ001-013-021815-
Northern Litchfield-Southern Litchfield-
125 PM EDT Sun Aug 2 2020

...A LINE OF STRONG THUNDERSTORMS WILL AFFECT NORTHEASTERN LITCHFIELD
COUNTY...

At 125 PM EDT, radar indicated strong thunderstorms were located
along a line extending from Winsted to near Torrington to near
Litchfield. Movement was northeast at 35 mph.

Winds in excess of 40 mph are possible with these storms.

Locations impacted include...
Torrington, Thomaston, New Hartford, Litchfield, Northwest Harwinton,
Terryville, Winsted, New Hartford Center, Plymouth, Harwinton,
Barkhamsted, Morris, Bantam, West Torrington, Torringford, Haight
Vineyard, Pequabuck, Reynolds Bridge, Mooreville and Beech Rock.

Torrential rainfall is also occurring with these storms, and may
cause localized flooding. Do not drive your vehicle through flooded
roadways.

These storms 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 4166 7334 4196 7307 4200 7302 4197 7303
      4197 7289 4190 7291 4190 7294 4185 7295
      4184 7294 4181 7295 4180 7302 4178 7301
      4165 7299
TIME...MOT...LOC 1725Z 223DEG 31KT 4195 7304 4181 7310 4170 7324

BGM
Special weather statement, Aug 2, 1:43 PM EDT, 1 hour 30 minutes before
Special Weather Statement
National Weather Service Albany NY
143 PM EDT Sun Aug 2 2020

NYZ033-082-021815-
Hamilton-Northern Fulton-
143 PM EDT Sun Aug 2 2020

...A STRONG THUNDERSTORM DEVELOPING WILL AFFECT SOUTH CENTRAL
HAMILTON AND CENTRAL FULTON COUNTIES...

At 142 PM EDT, a strong thunderstorm was located over Caroga Lake, or
10 miles northwest of Gloversville, moving northeast at 25 mph.

Winds in excess of 40 mph are possible with this storm.

Locations impacted include...
Caroga Lake, Northampton Beach Public Campground, Caroga Lake Public
Campground, Bleecker, Benson, North Bush, Wheelerville, Bleecker
Center, Sweets Crossing, Canada Lake, Glasgow Mills, Pinnacle,
Newkirk, Stewart Landing, Bowlers Corners, Peters Corners, Lindsley
Corners, Tomantown, Bradtville and Upper Benson.

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 4337 7438 4319 7417 4309 7442 4309 7444
      4308 7448 4308 7450 4305 7452 4313 7463
TIME...MOT...LOC 1742Z 230DEG 21KT 4313 7453

JPV

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 2, 1:43 PM EDTSpecial Weather StatementALYFulton32 min
Aug 2, 4:15 PM EDTSpecial Weather StatementALYHamilton30 min
Aug 2, 4:18 PM EDTSpecial Weather StatementALYDutchess42 min
Aug 2, 5:00 PM EDTSpecial Weather StatementALYDutchess30 min
Aug 2, 5:22 PM EDTSevere Thunderstorm WarningALYDutchess53 min
Aug 2, 5:41 PM EDTSpecial Weather StatementALYColumbia34 min
Aug 2, 6:03 PM EDTSpecial Weather StatementALYDutchess27 min
Aug 2, 6:32 PM EDTSpecial Weather StatementALYColumbia28 min
Aug 2, 6:58 PM EDTSpecial Weather StatementALYRensselaer32 min
Aug 2, 7:07 PM EDTSpecial Weather StatementALYHamilton38 min
Aug 2, 7:32 PM EDTSpecial Weather StatementALYHamilton28 min
Aug 2, 7:36 PM EDTSevere Thunderstorm WarningALYHamilton39 min
Aug 2, 7:39 PM EDTTornado WarningALYHamilton24 min
Aug 2, 1:25 PM EDTSpecial Weather StatementALY50 min
Aug 2, 6:09 PM EDTTornado WarningALYNorthwest Hills Planning Region51 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.