Alert archive / Connecticut / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 67, NWS Boston/Norton, MA

July 26, 2012Capitol Planning Region, Connecticut

NWS Boston/Norton, MA issued this severe thunderstorm warning at Jul 26, 2012, 7:06 PM EDT for Capitol Planning Region, Connecticut. It was in force for 69 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 26, 2012, 7:06 PM EDT (23:06 UTC)
Expired
Jul 26, 2012, 8:15 PM EDT
In force
69 min
Issued by
NWS Boston/Norton, MA
Area
Storm-based polygon

County Capitol Planning Region, CT

The radar

The Brookhaven radar (KOKX), 86 km from the middle of the area, began a volume at 23:07 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.

IssuedProductOfficeLasted
Jul 26, 3:57 PM EDTSevere Thunderstorm WatchSPC6 hr

The nearest sounding before it

Brookhaven, NY (KOKX), launched 12:00Z, 11.1 hours before the alert went out and 86 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-pSkew-T log-p diagram, Brookhaven, NY at 12:00Z on 2012-07-26Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Brookhaven, NY at 12:00Z on 2012-07-26The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 132 square meters per square second.19395878Sfc1 km3 km6 km9 kmRMLM
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
1459 m above ground
0-6 km bulk shear
40 kt
0-1 km storm-relative helicity
132 m²/s²
0-3 km storm-relative helicity
160 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

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

652 
WUUS51 KBOX 262306
SVRBOX
CTC003-270015-
/O.NEW.KBOX.SV.W.0067.120726T2306Z-120727T0015Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TAUNTON MA
706 PM EDT THU JUL 26 2012

THE NATIONAL WEATHER SERVICE IN TAUNTON HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHERN HARTFORD COUNTY IN NORTHERN CONNECTICUT...
  THIS INCLUDES THE CITIES OF...WEST HARTFORD...NEWINGTON...NEW
  BRITAIN...MANCHESTER...HARTFORD...EAST HARTFORD...BRISTOL...

* UNTIL 815 PM EDT

* AT 706 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING DAMAGING WINDS IN
  EXCESS OF 60 MPH.  THESE STORMS WERE LOCATED ALONG A LINE EXTENDING
  FROM 34 MILES WEST OF BURLINGTON TO 40 MILES SOUTHWEST OF
  SOUTHINGTON...OR ALONG A LINE EXTENDING FROM 27 MILES SOUTHWEST OF
  TORRINGTON TO 25 MILES WEST OF SHELTON...AND WAS MOVING EAST AT 45
  MPH.

* SOME LOCATIONS IN THE WARNING INCLUDE...PLAINVILLE...FARMINGTON...
  BERLIN...WETHERSFIELD...GLASTONBURY AND ROCKY HILL.

THE STORMS WILL BE MOVING INTO WESTERN HARTFORD COUNTY AFTER 730 PM.

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.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 1100 PM EDT
THURSDAY EVENING FOR NORTHERN CONNECTICUT AND WESTERN MASSACHUSETTS.

&&

LAT...LON 4179 7247 4170 7245 4158 7246 4164 7252
      4162 7271 4161 7271 4157 7276 4157 7279
      4155 7282 4156 7284 4154 7285 4156 7288
      4156 7295 4164 7294 4164 7299 4179 7302
TIME...MOT...LOC 2304Z 271DEG 38KT 4168 7364 4136 7361

$$

KJC
2 follow-up statements
136 
WWUS51 KBOX 262354
SVSBOX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TAUNTON MA
754 PM EDT THU JUL 26 2012

CTC003-270015-
/O.CON.KBOX.SV.W.0067.000000T0000Z-120727T0015Z/
HARTFORD CT-
754 PM EDT THU JUL 26 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 815 PM EDT
FOR SOUTHERN HARTFORD COUNTY...

AT 754 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING DAMAGING
WINDS IN EXCESS OF 60 MPH.  THESE STORMS WERE LOCATED ALONG A LINE
EXTENDING FROM BRISTOL TO 17 MILES SOUTH OF SOUTHINGTON...OR ALONG A
LINE EXTENDING FROM BRISTOL TO NEW HAVEN...MOVING EAST AT 45 MPH.

OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
PLAINVILLE...FARMINGTON...NEW BRITAIN...WEST HARTFORD...BERLIN...
NEWINGTON...HARTFORD...WETHERSFIELD...ROCKY HILL...EAST HARTFORD AND
GLASTONBURY

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 1100 PM EDT
THURSDAY EVENING FOR NORTHERN CONNECTICUT AND WESTERN MASSACHUSETTS.

&&

LAT...LON 4179 7247 4170 7245 4158 7246 4164 7252
      4162 7271 4161 7271 4157 7276 4157 7279
      4155 7282 4156 7284 4154 7285 4156 7288
      4156 7295 4164 7294 4164 7299 4179 7302
TIME...MOT...LOC 2354Z 271DEG 39KT 4166 7293 4136 7286

$$

KJC
328 
WWUS51 KBOX 270015
SVSBOX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TAUNTON MA
815 PM EDT THU JUL 26 2012

CTC003-270025-
/O.EXP.KBOX.SV.W.0067.000000T0000Z-120727T0015Z/
HARTFORD CT-
815 PM EDT THU JUL 26 2012

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHERN HARTFORD COUNTY HAS
EXPIRED...

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 1100 PM EDT
THURSDAY EVENING FOR NORTHERN CONNECTICUT AND WESTERN MASSACHUSETTS.

LAT...LON 4179 7247 4170 7245 4158 7246 4164 7252
      4162 7271 4161 7271 4157 7276 4157 7279
      4155 7282 4156 7284 4154 7285 4156 7288
      4156 7295 4164 7294 4164 7299 4179 7302
TIME...MOT...LOC 0015Z 271DEG 39KT 4165 7262 4135 7256

$$

KJC

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 26, 11:26 AM EDTFlash Flood WatchBOXCapitol Planning Region, Northeastern Connecticut Planning Region11 hr
Jul 26, 6:20 PM EDTSpecial Weather StatementBOX85 min

Nearby

Severe Thunderstorm Warnings in Connecticut, 2012Every 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.