Alert archive / Connecticut / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 12, NWS Boston/Norton, MA
NWS Boston/Norton, MA issued this severe thunderstorm warning at Jun 8, 2021, 2:29 PM EDT for Capitol Planning Region, Connecticut. It was in force for 61 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 8, 2021, 2:29 PM EDT (18:29 UTC)
- Expired
- Jun 8, 2021, 3:30 PM EDT
- In force
- 61 min
- Issued by
- NWS Boston/Norton, MA
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
County Capitol Planning Region, CT
The radar
The Brookhaven radar (KOKX), 112 km from the middle of the area, began a volume at 18:28 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 8, 2:47 PM EDT | TSTM WND DMG | South Windsor, CT | LARGE PORTION OF TREE DOWN ON HAYES ROAD |
| Jun 8, 2:55 PM EDT | TSTM WND DMG | South Windsor, CT | LARGE PORTION OF TREE DOWN ON HAYES ROAD |
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, 6.5 hours before the alert went out and 112 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.
- Mixed-layer CAPE
- 740 J/kg
- Mixed-layer CIN
- -106 J/kg
- Mixed-layer LCL
- 1004 m above ground
- 0-6 km bulk shear
- 10 kt
- 0-1 km storm-relative helicity
- 14 m²/s²
- 0-3 km storm-relative helicity
- 9 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
938
WUUS51 KBOX 081829
SVRBOX
CTC003-013-081930-
/O.NEW.KBOX.SV.W.0012.210608T1829Z-210608T1930Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Boston/Norton MA
229 PM EDT Tue Jun 8 2021
The National Weather Service in Boston/Norton has issued a
* Severe Thunderstorm Warning for...
Northwestern Tolland County in northern Connecticut...
Northeastern Hartford County in northern Connecticut...
* Until 330 PM EDT.
* At 229 PM EDT, a severe thunderstorm was located over South
Windsor, moving northeast at 15 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, Manchester, East Hartford, Enfield, Vernon, Windsor,
South Windsor, Bloomfield, Ellington, Tolland, Windsor Locks,
Somers and East Windsor.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 4174 7260 4181 7270 4202 7256 4191 7232
TIME...MOT...LOC 1829Z 214DEG 13KT 4182 7260
HAIL...1.00IN
WIND...60MPH
$$
Chai2 follow-up statements
799
WWUS51 KBOX 081858
SVSBOX
Severe Weather Statement
National Weather Service Boston/Norton MA
258 PM EDT Tue Jun 8 2021
CTC003-013-081930-
/O.CON.KBOX.SV.W.0012.000000T0000Z-210608T1930Z/
Tolland CT-Hartford CT-
258 PM EDT Tue Jun 8 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 330 PM EDT
FOR NORTHWESTERN TOLLAND AND NORTHEASTERN HARTFORD COUNTIES...
At 258 PM EDT, a severe thunderstorm was located over East Windsor,
or near Enfield, moving northeast at 15 mph.
HAZARD...60 mph wind gusts and quarter size hail.
SOURCE...Radar indicated.
IMPACT...Expect wind damage to trees and power lines. Minor hail
damage to vehicles is possible.
Locations impacted include...
Hartford, Manchester, East Hartford, Enfield, Vernon, Windsor, South
Windsor, Bloomfield, Ellington, Tolland, Windsor Locks, Somers and
East Windsor.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 4174 7260 4181 7270 4202 7256 4191 7232
TIME...MOT...LOC 1858Z 214DEG 13KT 4191 7252
HAIL...1.00IN
WIND...60MPH
$$
Chai255
WWUS51 KBOX 081925
SVSBOX
Severe Weather Statement
National Weather Service Boston/Norton MA
325 PM EDT Tue Jun 8 2021
CTC003-013-081935-
/O.EXP.KBOX.SV.W.0012.000000T0000Z-210608T1930Z/
Tolland CT-Hartford CT-
325 PM EDT Tue Jun 8 2021
...THE SEVERE THUNDERSTORM WARNING FOR NORTHWESTERN TOLLAND AND
NORTHEASTERN HARTFORD COUNTIES WILL EXPIRE AT 330 PM EDT...
The storm which prompted the warning has weakened below severe
limits, and has exited the warned area. Therefore, the warning will
be allowed to expire. However gusty winds and heavy rain are still
possible with this thunderstorm.
LAT...LON 4174 7260 4181 7270 4202 7256 4191 7232
TIME...MOT...LOC 1925Z 214DEG 13KT 4198 7245
$$
ChaiThe office that day
Everything else NWS Boston/Norton, MA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 8, 12:45 PM EDT | Special Weather Statement | BOX | 45 min | |
| Jun 8, 12:54 PM EDT | Flash Flood Watch | BOX | Capitol Planning Region | 8 hr |
| Jun 8, 2:10 PM EDT | Special Weather Statement | BOX | 50 min | |
| Jun 8, 2:56 PM EDT | Severe Thunderstorm Warning | BOX | Capitol Planning Region | 43 min |
| Jun 8, 3:24 PM EDT | Special Weather Statement | BOX | 51 min | |
| Jun 8, 3:28 PM EDT | Special Weather Statement | BOX | 47 min | |
| Jun 8, 4:13 PM EDT | Special Weather Statement | BOX | 47 min |
Nearby
Severe Thunderstorm Warnings in Connecticut, 2021Every 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.