Alert archive / Connecticut / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 92, NWS Albany, NY

July 7, 2021Northwest Hills Planning Region, Connecticut; Berkshire County, Massachusetts

NWS Albany, NY issued this severe thunderstorm warning at Jul 7, 2021, 4:16 PM EDT for Northwest Hills Planning Region, Connecticut; Berkshire County, Massachusetts. It was in force for 59 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Jul 7, 2021, 4:16 PM EDT (20:16 UTC)
Expired: Jul 7, 2021, 5:15 PM EDT
In force: 59 min
Issued by: NWS Albany, NY
Area: Storm-based polygon
Tornado: Possible
Hail: 0.75 in
Wind: 60.0 mph

Counties Northwest Hills Planning Region, CT, Berkshire County, MA

The radar

The Albany radar (KENX), 100 km from the middle of the area, began a volume at 20:18 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.

Issued	Product	Office	Lasted
Jul 7, 2:41 PM EDT	Severe Thunderstorm Watch	SPC	10 hr

The nearest sounding before it

Albany, NY (KALY), launched 12:00Z, 8.3 hours before the alert went out and 93 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: 18 J/kg
Mixed-layer CIN: -132 J/kg
Mixed-layer LCL: 923 m above ground
0-6 km bulk shear: 34 kt
0-1 km storm-relative helicity: 49 m²/s²
0-3 km storm-relative helicity: 64 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

465 
WUUS51 KALY 072016
SVRALY
CTC005-MAC003-072115-
/O.NEW.KALY.SV.W.0092.210707T2016Z-210707T2115Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Albany NY
416 PM EDT Wed Jul 7 2021

The National Weather Service in Albany has issued a

* Severe Thunderstorm Warning for...
  Northeastern Litchfield County in northern Connecticut...
  Southern Berkshire County in western Massachusetts...

* Until 515 PM EDT.

* At 416 PM EDT, a severe thunderstorm was located over Sandisfield,
  or 13 miles southeast of Great Barrington, moving east at 35 mph.

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

  SOURCE...Radar indicated.

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

* Locations impacted include...
  Great Barrington, Sheffield, Norfolk, Otis, Canaan, Sandisfield,
  Housatonic, Ashley Falls, Winsted, Barkhamsted, Stockbridge, New
  Marlborough, Colebrook, Monterey, Tyringham, Sodom, Hartsville,
  Konkapot, Wangum Village and Gomorrah.

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 4190 7291 4202 7346 4231 7337 4227 7300
      4215 7303 4215 7307 4212 7306 4211 7307
      4209 7307 4204 7306 4204 7301 4197 7303
      4197 7289
TIME...MOT...LOC 2016Z 285DEG 32KT 4208 7315 

TORNADO...POSSIBLE
HAIL...0.75IN
WIND...60MPH
 
$$

NAS

1 follow-up statement

935 
WWUS51 KALY 072048
SVSALY

Severe Weather Statement
National Weather Service Albany NY
448 PM EDT Wed Jul 7 2021

MAC003-072058-
/O.CAN.KALY.SV.W.0092.000000T0000Z-210707T2115Z/
Berkshire MA-
448 PM EDT Wed Jul 7 2021

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHERN BERKSHIRE COUNTY IS
CANCELLED...
    
The severe thunderstorm which prompted the warning has moved out of 
the warned area. Therefore, the warning has been cancelled.

A Severe Thunderstorm Watch remains in effect until 1100 PM EDT for
northern Connecticut...and western Massachusetts.

LAT...LON 4190 7291 4202 7346 4205 7345 4204 7306
      4204 7301 4197 7303 4197 7289
TIME...MOT...LOC 2048Z 297DEG 34KT 4196 7295 

$$

CTC005-072115-
/O.CON.KALY.SV.W.0092.000000T0000Z-210707T2115Z/
Litchfield CT-
448 PM EDT Wed Jul 7 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 515 PM EDT
FOR NORTHEASTERN LITCHFIELD COUNTY...

At 448 PM EDT, a severe thunderstorm was located near Hartland, or 12
miles northeast of Torrington, moving southeast at 40 mph.

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

SOURCE...Radar indicated.

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

Locations impacted include...
Norfolk, Canaan, Winsted, Barkhamsted, Colebrook, Sodom, Wangum
Village, North Colebrook, Riverton, Mill Brook, Beech Rock,
Robertsville, Taconic, Joyceville, North Green, East Canaan, Twin
Lakes, Hammertown, West Norfolk and Clayton.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4190 7291 4202 7346 4205 7345 4204 7306
      4204 7301 4197 7303 4197 7289
TIME...MOT...LOC 2048Z 297DEG 34KT 4196 7295 

HAIL...0.75IN
WIND...60MPH
 
$$

NAS

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 7, 4:44 PM EDT	Severe Thunderstorm Warning	ALY	Northwest Hills Planning Region	31 min
Jul 7, 5:17 PM EDT	Special Weather Statement	ALY		58 min
Jul 7, 5:23 PM EDT	Severe Thunderstorm Warning	ALY	Northwest Hills Planning Region	49 min
Jul 7, 3:19 PM EDT	Special Weather Statement	ALY	Berkshire	26 min
Jul 7, 3:27 PM EDT	Severe Thunderstorm Warning	ALY	Berkshire	13 min
Jul 7, 3:38 PM EDT	Severe Thunderstorm Warning	ALY	Berkshire	67 min
Jul 7, 4:00 PM EDT	Severe Thunderstorm Warning	ALY	Berkshire	15 min
Jul 7, 4:01 PM EDT	Areal Flood Advisory	ALY	Berkshire	119 min
Jul 7, 6:48 PM EDT	Severe Thunderstorm Warning	ALY	Berkshire	27 min
Jul 7, 7:53 PM EDT	Special Weather Statement	ALY	Berkshire	52 min

Nearby

Severe Thunderstorm Warnings in Connecticut, 2021 Severe Thunderstorm Warnings in Massachusetts, 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.