Alert archive / Connecticut / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 18, NWS Boston/Norton, MA

June 22, 2012Capitol Planning Region, Northeastern Connecticut Planning Region, Connecticut

NWS Boston/Norton, MA issued this severe thunderstorm warning at Jun 22, 2012, 3:31 PM EDT for Capitol Planning Region, Northeastern Connecticut Planning Region, Connecticut. It was in force for 59 min. 9 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 22, 2012, 3:31 PM EDT (19:31 UTC)
Expired: Jun 22, 2012, 4:30 PM EDT
In force: 59 min
Issued by: NWS Boston/Norton, MA
Area: Storm-based polygon

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

The radar

The Brookhaven radar (KOKX), 103 km from the middle of the area, began a volume at 19:33 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 22, 3:42 PM EDT	HAIL 0.75	Manchester, CT
Jun 22, 3:45 PM EDT	TSTM WND DMG	Manchester, CT	TREES DOWN ON PICKENS ROAD
Jun 22, 4:04 PM EDT	HAIL 0.75	Vernon, CT
Jun 22, 4:04 PM EDT	HAIL 0.88	Tolland, CT
Jun 22, 4:15 PM EDT	TSTM WND DMG	Tolland, CT	TREE AND WIRES DOWN ON CRYSTAL LAKE ROAD AND OLD POST ROAD
Jun 22, 4:20 PM EDT	HAIL 1	Willimantic, CT
Jun 22, 4:29 PM EDT	TSTM WND DMG	Tolland, CT	TREES AND WIRES DOWN ON ROUTE 30...DOYLE ROAD AND ROBIN CIRCLE
Jun 22, 4:29 PM EDT	HAIL 1	Tolland, CT
Jun 22, 4:36 PM EDT	TSTM WND DMG	Windham, CT	TREES AND WIRES DOWN NEAR THE NEW WINDHAM SCHOOL

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 22, 1:41 PM EDT	Severe Thunderstorm Watch	SPC	7 hr

The nearest sounding before it

Brookhaven, NY (KOKX), launched 12:00Z, 7.5 hours before the alert went out and 103 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: 840 J/kg
Mixed-layer CIN: -103 J/kg
Mixed-layer LCL: 1512 m above ground
0-6 km bulk shear: 28 kt
0-1 km storm-relative helicity: -24 m²/s²
0-3 km storm-relative helicity: 45 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.2

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

832 
WUUS51 KBOX 221931
SVRBOX
CTC003-013-015-222030-
/O.NEW.KBOX.SV.W.0018.120622T1931Z-120622T2030Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TAUNTON MA
331 PM EDT FRI JUN 22 2012

THE NATIONAL WEATHER SERVICE IN TAUNTON HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  EAST CENTRAL HARTFORD COUNTY IN NORTHERN CONNECTICUT...
  THIS INCLUDES THE CITIES OF...MANCHESTER...HARTFORD...EAST
  HARTFORD...
  TOLLAND COUNTY IN NORTHERN CONNECTICUT...
  THIS INCLUDES THE CITIES OF...VERNON...MANSFIELD...
  SOUTHWESTERN WINDHAM COUNTY IN NORTHERN CONNECTICUT...
  THIS INCLUDES THE CITY OF WILLIMANTIC...

* UNTIL 430 PM EDT

* AT 327 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND
  DAMAGING WINDS IN EXCESS OF 60 MPH.  THIS STORM WAS LOCATED NEAR
  GLASTONBURY...OR NEAR EAST HARTFORD...AND WAS MOVING EAST AT 25
  MPH.

* SOME LOCATIONS IN THE WARNING INCLUDE...MARLBOROUGH...BOLTON...
  HEBRON...ANDOVER...COLUMBIA...TOLLAND...COVENTRY...WILLINGTON...
  WINDHAM AND SCOTLAND.

SEVERE THUNDERSTORMS PRODUCE DAMAGING WINDS AND LARGE HAIL...AS WELL
AS DEADLY LIGHTNING AND TORRENTIAL RAIN. GET TO SAFE SHELTER NOW...
INSIDE A STURDY BUILDING OR IN A VEHICLE. DO NOT SEEK SHELTER UNDER
TREES. IF YOU CAN HEAR THUNDER...YOU ARE CLOSE ENOUGH TO BE STRUCK BY
LIGHTNING. DRIVERS SHOULD BE ALERT FOR PONDING OF WATER AND AVOID
FLOODED ROADS.

&&

LAT...LON 4196 7223 4165 7206 4166 7217 4171 7224
      4169 7226 4167 7226 4164 7233 4163 7250
      4164 7252 4163 7263 4163 7264 4178 7270
TIME...MOT...LOC 1931Z 252DEG 20KT 4172 7255

$$

MLD

2 follow-up statements

774 
WWUS51 KBOX 222005
SVSBOX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TAUNTON MA
405 PM EDT FRI JUN 22 2012

CTC003-013-015-222030-
/O.CON.KBOX.SV.W.0018.000000T0000Z-120622T2030Z/
HARTFORD CT-TOLLAND CT-WINDHAM CT-
405 PM EDT FRI JUN 22 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 430 PM EDT
FOR SOUTHWESTERN WINDHAM...TOLLAND AND EAST CENTRAL HARTFORD
COUNTIES...

AT 401 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE
HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH.  THIS STORM WAS
LOCATED NEAR COVENTRY...OR 6 MILES SOUTHWEST OF MANSFIELD...MOVING
EAST AT 25 MPH.

OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
WILLIMANTIC...STORRS...WILLINGTON AND WINDHAM

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 900 PM EDT FRIDAY
EVENING FOR NORTHERN CONNECTICUT AND WESTERN MASSACHUSETTS.

&&

LAT...LON 4164 7233 4165 7247 4184 7254 4196 7223
      4165 7206 4166 7217 4171 7224 4169 7226
      4167 7226
TIME...MOT...LOC 2005Z 252DEG 20KT 4178 7231

$$

MLD

103 
WWUS51 KBOX 222024
SVSBOX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TAUNTON MA
424 PM EDT FRI JUN 22 2012

CTC003-013-015-222034-
/O.EXP.KBOX.SV.W.0018.000000T0000Z-120622T2030Z/
HARTFORD CT-TOLLAND CT-WINDHAM CT-
424 PM EDT FRI JUN 22 2012

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHWESTERN WINDHAM...TOLLAND
AND EAST CENTRAL HARTFORD COUNTIES WILL EXPIRE AT 430 PM EDT...

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 900 PM EDT FRIDAY
EVENING FOR NORTHERN CONNECTICUT AND WESTERN MASSACHUSETTS.

LAT...LON 4164 7233 4165 7247 4184 7254 4196 7223
      4165 7206 4166 7217 4171 7224 4169 7226
      4167 7226
TIME...MOT...LOC 2024Z 252DEG 20KT 4181 7217

$$

DOODY

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 22, 3:14 PM EDT	Special Weather Statement	BOX		61 min
Jun 22, 4:01 PM EDT	Areal Flood Advisory	BOX	Capitol Planning Region	3 hr
Jun 22, 4:02 PM EDT	Severe Thunderstorm Warning	BOX	Capitol Planning Region, Northeastern Connecticut Planning Region	35 min
Jun 22, 4:22 PM EDT	Areal Flood Advisory	BOX	Northeastern Connecticut Planning Region	3 hr
Jun 22, 4:23 PM EDT	Special Weather Statement	BOX		67 min
Jun 22, 4:26 PM EDT	Special Weather Statement	BOX		64 min
Jun 22, 4:31 PM EDT	Severe Thunderstorm Warning	BOX	Northeastern Connecticut Planning Region	44 min
Jun 22, 4:36 PM EDT	Flash Flood Warning	BOX	Capitol Planning Region	3 hr

Nearby

Severe Thunderstorm Warnings in Connecticut, 2012 Every severe thunderstorm warning in 2012

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.