Alert archive / Vermont / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 20, NWS Burlington, VT

June 30, 2021Addison County, Rutland County, Vermont; Essex County, New York

NWS Burlington, VT issued this severe thunderstorm warning at Jun 30, 2021, 12:46 PM EDT for Addison County, Rutland County, Vermont; Essex County, New York. It was in force for 59 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, 12:46 PM EDT (16:46 UTC)
Expired: Jun 30, 2021, 1:45 PM EDT
In force: 59 min
Issued by: NWS Burlington, VT
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Essex County, NY, Addison County, VT, Rutland County, VT

The radar

The Burlington radar (KCXX), 85 km from the middle of the area, began a volume at 16:50 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, 1:10 PM EDT	TSTM WND DMG	2 Wnw Schroon Lake, NY	TREES AND POWER LINES DOWN ON FOWLER AVE
Jun 30, 1:32 PM EDT	TSTM WND DMG	1 Nw Ticonderoga, NY	TREES AND POWER LINES DOWN JUST NORTH OF THE VILLAGE ON ROUTE 9

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, 12:06 PM EDT	Severe Thunderstorm Watch	SPC	7 hr

The nearest sounding before it

Albany, NY (KALY), launched 12:00Z, 4.8 hours before the alert went out and 126 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.

474 
WUUS51 KBTV 301646
SVRBTV
NYC031-VTC001-021-301745-
/O.NEW.KBTV.SV.W.0020.210630T1646Z-210630T1745Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Burlington VT
1246 PM EDT Wed Jun 30 2021

The National Weather Service in Burlington has issued a

* Severe Thunderstorm Warning for...
  Southeastern Essex County in northern New York...
  Southwestern Addison County in central Vermont...
  Northwestern Rutland County in southern Vermont...

* Until 145 PM EDT.

* At 1245 PM EDT, a severe thunderstorm was located 7 miles north of
  Minerva, moving east at 45 mph.

  HAZARD...60 mph wind gusts and quarter size hail.

  SOURCE...Radar indicated.

  IMPACT...Minor hail damage to vehicles is possible. Expect wind 
           damage to trees and powerlines.

* Locations impacted include...
  Middlebury, Crown Point, Minerva, Cornwall, Sudbury, Salisbury,
  Schroon Lake, Orwell, Whiting, Goshen, Shoreham, Ripton, Crown
  Point Center, Brandon, Leicester, Bridport, Benson, Hubbardton,
  Pittsford and Chittenden.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

If on or near Lake Champlain, get away from the water and move 
indoors or inside a vehicle. Remember, lightning can strike out to 
15 miles from the parent thunderstorm. If you can hear thunder, you 
are close enough to be struck by lightning. Move to safe shelter 
now!  Do not be caught on the water in a thunderstorm.

&&

LAT...LON 4377 7335 4381 7338 4375 7406 4378 7405
      4379 7405 4380 7407 4398 7406 4401 7297
      4374 7298 4373 7337
TIME...MOT...LOC 1645Z 271DEG 37KT 4390 7395 

HAIL...1.00IN
WIND...60MPH
 
$$

Kutikoff

2 follow-up statements

394 
WWUS51 KBTV 301700
SVSBTV

Severe Weather Statement
National Weather Service Burlington VT
100 PM EDT Wed Jun 30 2021

NYC031-VTC001-021-301745-
/O.CON.KBTV.SV.W.0020.000000T0000Z-210630T1745Z/
Essex NY-Addison VT-Rutland VT-
100 PM EDT Wed Jun 30 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 145 PM EDT
FOR SOUTHEASTERN ESSEX...SOUTHWESTERN ADDISON AND NORTHWESTERN
RUTLAND COUNTIES...

At 1259 PM EDT, a severe thunderstorm was located near Schroon Falls,
moving east at 45 mph.

HAZARD...60 mph wind gusts and quarter size hail.

SOURCE...Radar indicated.

IMPACT...Minor hail damage to vehicles is possible. Expect wind 
         damage to trees and powerlines.

Locations impacted include...
Middlebury, Crown Point, Cornwall, Sudbury, Salisbury, Schroon Lake,
Orwell, Whiting, Goshen, Shoreham, Ripton, Crown Point Center,
Brandon, Leicester, Bridport, Benson, Hubbardton, Pittsford,
Chittenden and Hancock.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

If on or near Lake Champlain, get away from the water and move 
indoors or inside a vehicle. remember, lightning can strike out to 
15 miles from the parent thunderstorm. If you can hear thunder, you 
are close enough to be struck by lightning. Move to safe shelter 
now!  Do not be caught on the water in a thunderstorm.

&&

LAT...LON 4377 7335 4381 7338 4376 7390 4398 7396
      4401 7297 4374 7298 4373 7337
TIME...MOT...LOC 1659Z 271DEG 37KT 4390 7389 

HAIL...1.00IN
WIND...60MPH
 
$$

Kutikoff

272 
WWUS51 KBTV 301718
SVSBTV

Severe Weather Statement
National Weather Service Burlington VT
118 PM EDT Wed Jun 30 2021

NYC031-VTC001-021-301745-
/O.CON.KBTV.SV.W.0020.000000T0000Z-210630T1745Z/
Essex NY-Addison VT-Rutland VT-
118 PM EDT Wed Jun 30 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 145 PM EDT
FOR SOUTHEASTERN ESSEX...SOUTHWESTERN ADDISON AND NORTHWESTERN
RUTLAND COUNTIES...

At 118 PM EDT, a severe thunderstorm was located over Paradox, moving
east at 45 mph.

HAZARD...60 mph wind gusts and quarter size hail.

SOURCE...Radar indicated.

IMPACT...Minor hail damage to vehicles is possible. Expect wind 
         damage to trees and powerlines.

Locations impacted include...
Middlebury, Crown Point, Cornwall, Sudbury, Salisbury, Orwell,
Whiting, Goshen, Shoreham, Ripton, Crown Point Center, Brandon,
Leicester, Bridport, Benson, Hubbardton, Pittsford, Chittenden,
Hancock and North Hudson.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Boaters on Lake Champlain should seek safe harbor now! Strong winds
will cause higher waves and sudden wind shifts may overturn boats.

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

&&

LAT...LON 4377 7335 4381 7338 4377 7376 4399 7375
      4401 7297 4374 7298 4373 7337
TIME...MOT...LOC 1718Z 271DEG 37KT 4390 7362 

HAIL...1.00IN
WIND...60MPH
 
$$

Kutikoff

The office that day

Everything else NWS Burlington, VT issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jun 30, 12:44 PM EDT	Special Weather Statement	BTV	Chittenden	46 min
Jun 30, 1:15 PM EDT	Severe Thunderstorm Warning	BTV	Chittenden, Lamoille, Washington	60 min
Jun 30, 1:37 PM EDT	Severe Thunderstorm Warning	BTV	Addison, Rutland, Windsor	53 min
Jun 30, 1:45 PM EDT	Special Weather Statement	BTV	Orange	60 min
Jun 30, 2:17 PM EDT	Special Weather Statement	BTV	Caledonia	58 min
Jun 30, 2:24 PM EDT	Severe Thunderstorm Warning	BTV	Addison, Rutland, Windsor	66 min
Jun 30, 2:56 PM EDT	Special Weather Statement	BTV	Windsor	49 min
Jun 30, 7:28 PM EDT	Special Weather Statement	BTV	Caledonia, Essex, Lamoille, Orleans	62 min
Jun 30, 12:13 PM EDT	Special Weather Statement	BTV	Essex	62 min
Jun 30, 4:50 PM EDT	Special Weather Statement	BTV	St. Lawrence	55 min

Nearby

Severe Thunderstorm Warnings in Vermont, 2021 Severe Thunderstorm Warnings in New York, 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.