Alert archive / Vermont / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 63, NWS Albany, NY

June 30, 2021Bennington County, Windham County, Vermont

NWS Albany, NY issued this severe thunderstorm warning at Jun 30, 2021, 3:49 PM EDT for Bennington County, Windham County, Vermont. It was in force for 26 min. 2 reports came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued: Jun 30, 2021, 3:49 PM EDT (19:49 UTC)
Expired: Jun 30, 2021, 4:15 PM EDT
In force: 26 min
Issued by: NWS Albany, NY
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

Counties Bennington County, VT, Windham County, VT

The radar

The Albany radar (KENX), 129 km from the middle of the area, began a volume at 19:48 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.

What was reported inside it

Time	Report	Where	Remark
Jun 30, 4:01 PM EDT	TSTM WND DMG	Townshend, VT	TREES DOWN ON WIRES ALONG ROUTE 30. TIME ESTIMATED BY RADAR.
Jun 30, 4:09 PM EDT	TSTM WND DMG	Putney, VT	REPORT OF TREES AND WIRES DOWN. TIME ESTIMATED FROM RADAR

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The watch it was issued in

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

Issued	Product	Office	Lasted
Jun 30, 11:47 AM EDT	Severe Thunderstorm Watch	SPC	7 hr

The nearest sounding before it

Albany, NY (KALY), launched 12:00Z, 7.8 hours before the alert went out and 107 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: 113 J/kg
Mixed-layer CIN: -257 J/kg
Mixed-layer LCL: 1162 m above ground
0-6 km bulk shear: 45 kt
0-1 km storm-relative helicity: 66 m²/s²
0-3 km storm-relative helicity: 98 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.1

Open this sounding in Storm Lab

The text

As transmitted.

509 
WUUS51 KALY 301949
SVRALY
VTC003-025-302015-
/O.NEW.KALY.SV.W.0063.210630T1949Z-210630T2015Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Albany NY
349 PM EDT Wed Jun 30 2021

The National Weather Service in Albany has issued a

* Severe Thunderstorm Warning for...
  Eastern Bennington County in southern Vermont...
  Windham County in southern Vermont...

* Until 415 PM EDT.

* At 348 PM EDT, severe thunderstorms were located along a line
  extending from near Londonderry to near West Wardsboro to Stamford,
  moving east at 45 mph.

  HAZARD...60 mph wind gusts.

  SOURCE...Radar indicated.

  IMPACT...Expect damage to roofs, siding, and trees.

* Locations impacted include...
  Brattleboro, Bellows Falls, Londonderry, Townshend, Stratton,
  Putney, Vernon, Wilmington, Readsboro, Saxtons River, Westminster,
  Newfane, Guilford Center, West Wardsboro, Windham, Rockingham,
  Guilford, Whitingham, Dover and Marlboro.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

&&

Please report hail size...damaging winds and reports of trees down to
the National Weather Service by email at Alb.Stormreport@noaa.gov...
On Facebook at www.facebook.com/nwsalbany or twitter @nwsalbany

LAT...LON 4305 7247 4300 7244 4300 7246 4297 7247
      4295 7253 4292 7252 4288 7255 4281 7254
      4278 7251 4277 7252 4277 7249 4273 7246
      4274 7307 4296 7296 4324 7289 4322 7269
      4323 7244 4315 7246 4311 7243
TIME...MOT...LOC 1948Z 267DEG 39KT 4319 7276 4297 7283 4273 7306 

HAIL...<.75IN
WIND...60MPH
 
$$

Rathbun

1 follow-up statement

277 
WWUS51 KALY 302014
SVSALY

Severe Weather Statement
National Weather Service Albany NY
414 PM EDT Wed Jun 30 2021

VTC003-025-302024-
/O.EXP.KALY.SV.W.0063.000000T0000Z-210630T2015Z/
Bennington VT-Windham VT-
414 PM EDT Wed Jun 30 2021

...THE SEVERE THUNDERSTORM WARNING FOR EASTERN BENNINGTON AND WINDHAM
COUNTIES WILL EXPIRE AT 415 PM EDT...
    
The storms which prompted the warning have weakened below severe
limits, and have exited the warned area. Therefore, the warning will
be allowed to expire.

A Severe Thunderstorm Watch remains in effect until 800 PM EDT for
southern Vermont. A Severe Thunderstorm Watch also remains in effect
until 1000 PM EDT for western Massachusetts.

LAT...LON 4305 7247 4300 7244 4300 7246 4297 7247
      4295 7253 4292 7252 4288 7255 4281 7254
      4278 7251 4277 7252 4277 7249 4273 7246
      4274 7307 4296 7296 4324 7289 4322 7269
      4323 7244 4315 7246 4311 7243
TIME...MOT...LOC 2014Z 267DEG 39KT 4320 7240 4298 7247 4274 7270 

$$

Rathbun

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 30, 2:06 PM EDT	Special Weather Statement	ALY	Bennington	39 min
Jun 30, 2:48 PM EDT	Special Weather Statement	ALY	Windham	42 min
Jun 30, 2:54 PM EDT	Severe Thunderstorm Warning	ALY	Bennington	36 min
Jun 30, 3:24 PM EDT	Severe Thunderstorm Warning	ALY	Bennington, Windham	30 min
Jun 30, 3:35 PM EDT	Areal Flood Advisory	ALY	Bennington	55 min

Nearby

Severe Thunderstorm Warnings in Vermont, 2021 Every severe thunderstorm warning in 2021

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.