Alert archive / Connecticut / Severe Thunderstorm Warnings in 2022

Severe Thunderstorm Warning 21, NWS Boston/Norton, MA

July 12, 2022Capitol Planning Region, Northeastern Connecticut Planning Region, Connecticut

NWS Boston/Norton, MA issued this severe thunderstorm warning at Jul 12, 2022, 5:37 PM EDT for Capitol Planning Region, Northeastern Connecticut Planning Region, Connecticut. It was in force for 38 min. 1 report 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: Jul 12, 2022, 5:37 PM EDT (21:37 UTC)
Expired: Jul 12, 2022, 6:15 PM EDT
In force: 38 min
Issued by: NWS Boston/Norton, MA
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Capitol Planning Region, CT, Northeastern Connecticut Planning Region, CT

The radar

The Brookhaven radar (KOKX), 120 km from the middle of the area, began a volume at 21:40 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
Jul 12, 6:14 PM EDT	TSTM WND DMG	Enfield, CT	TREE DOWN BLOCKING MATHEWSON AVE. RELAYED VIA AMATEUR RADIO.

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

The nearest sounding before it

Brookhaven, NY (KOKX), launched 12:00Z, 9.6 hours before the alert went out and 120 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 1294 m above ground
0-6 km bulk shear: 38 kt
0-1 km storm-relative helicity: 134 m²/s²
0-3 km storm-relative helicity: 140 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

192 
WUUS51 KBOX 122137
SVRBOX
CTC003-015-122215-
/O.NEW.KBOX.SV.W.0021.220712T2137Z-220712T2215Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Boston/Norton MA
537 PM EDT Tue Jul 12 2022

The National Weather Service in Boston/Norton has issued a

* Severe Thunderstorm Warning for...
  Northwestern Windham County in northern Connecticut...
  Northern Hartford County in northern Connecticut...

* Until 615 PM EDT.

* At 537 PM EDT, a severe thunderstorm was located near Tolland, or
  12 miles north of Torrington, moving east at 40 mph.

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

  SOURCE...Radar indicated. Amateur radio has reported several trees 
           down in Lenox, MA. 

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

* Locations impacted include...
  Hartford, West Hartford, Manchester, East Hartford, Enfield,
  Vernon, Windsor, Agawam, South Windsor, Simsbury, Bloomfield, Avon,
  Longmeadow, Suffield, East Longmeadow, Ellington, Windsor Locks,
  Stafford, Somers and Granby.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4204 7301 4204 7282 4200 7281 4200 7277
      4204 7275 4204 7251 4196 7249 4196 7215
      4184 7219 4184 7222 4195 7222 4195 7251
      4186 7252 4181 7247 4176 7247 4180 7290
      4182 7294 4186 7295 4197 7289 4197 7303
TIME...MOT...LOC 2137Z 282DEG 37KT 4202 7308 

HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...OBSERVED
MAX WIND GUST...60 MPH

$$

Chai

2 follow-up statements

421 
WWUS51 KBOX 122142
SVSBOX

Severe Weather Statement
National Weather Service Boston/Norton MA
542 PM EDT Tue Jul 12 2022

CTC015-122150-
/O.CAN.KBOX.SV.W.0021.000000T0000Z-220712T2215Z/
Windham CT-
542 PM EDT Tue Jul 12 2022

...THE SEVERE THUNDERSTORM WARNING FOR NORTHWESTERN WINDHAM COUNTY IS
CANCELLED...
    
The severe thunderstorm which prompted the warning remains well to 
the west. Therefore, the warning has been cancelled.

LAT...LON 4204 7301 4204 7282 4200 7281 4200 7277
      4204 7275 4202 7260 4204 7251 4195 7249
      4195 7251 4186 7252 4184 7250 4181 7251
      4181 7247 4176 7247 4180 7290 4182 7294
      4186 7295 4197 7289 4197 7303
TIME...MOT...LOC 2140Z 282DEG 37KT 4201 7303 

$$

CTC003-122215-
/O.CON.KBOX.SV.W.0021.000000T0000Z-220712T2215Z/
Hartford CT-
542 PM EDT Tue Jul 12 2022

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 615 PM EDT
FOR NORTHERN HARTFORD COUNTY...

At 540 PM EDT, a severe thunderstorm was located near Hartland, or 13
miles northeast of Torrington, moving east at 45 mph.

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

SOURCE...Radar indicated.

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

Locations impacted include...
Hartford, West Hartford, Manchester, East Hartford, Enfield, Vernon,
Windsor, South Windsor, Simsbury, Bloomfield, Avon, Suffield, East
Longmeadow, Windsor Locks, Somers, Granby, East Windsor, Canton,
Southwick and East Granby.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4204 7301 4204 7282 4200 7281 4200 7277
      4204 7275 4202 7260 4204 7251 4195 7249
      4195 7251 4186 7252 4184 7250 4181 7251
      4181 7247 4176 7247 4180 7290 4182 7294
      4186 7295 4197 7289 4197 7303
TIME...MOT...LOC 2140Z 282DEG 37KT 4201 7303 

HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...OBSERVED
MAX WIND GUST...60 MPH

$$

Nocera

799 
WWUS51 KBOX 122202
SVSBOX

Severe Weather Statement
National Weather Service Boston/Norton MA
602 PM EDT Tue Jul 12 2022

CTC003-122215-
/O.CON.KBOX.SV.W.0021.000000T0000Z-220712T2215Z/
Hartford CT-
602 PM EDT Tue Jul 12 2022

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 615 PM EDT
FOR NORTHERN HARTFORD COUNTY...

At 602 PM EDT, a severe thunderstorm was located over East Granby, or
near Windsor, moving east at 45 mph.

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

SOURCE...Radar indicated.

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

Locations impacted include...
Enfield, Windsor, South Windsor, Simsbury, Bloomfield, Suffield, East
Longmeadow, Windsor Locks, Somers, Granby, East Windsor, Canton,
Southwick and East Granby.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4204 7285 4204 7282 4200 7281 4200 7277
      4204 7275 4202 7260 4204 7251 4195 7249
      4195 7251 4186 7252 4188 7290
TIME...MOT...LOC 2202Z 282DEG 37KT 4196 7273 

HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...OBSERVED
MAX WIND GUST...60 MPH

$$

Chai

The office that day

Everything else NWS Boston/Norton, MA issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jul 12, 6:10 PM EDT	Severe Thunderstorm Warning	BOX	Capitol Planning Region, Northeastern Connecticut Planning Region	50 min
Jul 12, 7:01 PM EDT	Special Weather Statement	BOX		44 min
Jul 12, 7:08 PM EDT	Severe Thunderstorm Warning	BOX	Capitol Planning Region	52 min
Jul 12, 7:53 PM EDT	Special Weather Statement	BOX		52 min

Nearby

Severe Thunderstorm Warnings in Connecticut, 2022 Every severe thunderstorm warning in 2022

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.