Alert archive / Connecticut / Severe Thunderstorm Warnings in 2011

Severe Thunderstorm Warning 22, NWS Boston/Norton, MA

June 1, 2011Capitol Planning Region, Northeastern Connecticut Planning Region, Connecticut; Hampden County, Hampshire County, Worcester County, Massachusetts

NWS Boston/Norton, MA issued this severe thunderstorm warning at Jun 1, 2011, 8:10 PM EDT for Capitol Planning Region, Northeastern Connecticut Planning Region, Connecticut; Hampden County, Hampshire County, Worcester County, Massachusetts. It was in force for 44 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
Jun 1, 2011, 8:10 PM EDT (00:10 UTC)
Expired
Jun 1, 2011, 8:54 PM EDT
In force
44 min
Issued by
NWS Boston/Norton, MA
Area
Storm-based polygon

Counties Capitol Planning Region, CT, Northeastern Connecticut Planning Region, CT, Hampden County, MA, Hampshire County, MA, Worcester County, MA

The radar

The Brookhaven radar (KOKX), 119 km from the middle of the area, began a volume at 00:12 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
Jun 1, 7:40 PM EDTTornado WatchSPC2 hr

The nearest sounding before it

Brookhaven, NY (KOKX), launched 00:00Z, 0.2 hours before the alert went out and 119 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 00:00Z on 2011-06-02Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 3004 joules per kilogram.LCLLFCEL10008507005003002001001 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 00:00Z on 2011-06-02The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 356 square meters per square second.193958Sfc1 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
3004 J/kg
Mixed-layer CIN
-113 J/kg
Mixed-layer LCL
751 m above ground
0-6 km bulk shear
41 kt
0-1 km storm-relative helicity
356 m²/s²
0-3 km storm-relative helicity
419 m²/s²
Significant tornado parameter
0.0
Supercell composite
15.2

Open this sounding in Storm Lab

The text

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

847 
WUUS51 KBOX 020010
SVRBOX
CTC003-013-015-MAC013-015-027-020115-
/O.NEW.KBOX.SV.W.0022.110602T0010Z-110602T0115Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TAUNTON MA
810 PM EDT WED JUN 1 2011

THE NATIONAL WEATHER SERVICE IN TAUNTON HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHWESTERN WORCESTER COUNTY IN CENTRAL MASSACHUSETTS...
  NORTHERN HARTFORD COUNTY IN NORTHERN CONNECTICUT...
  THIS INCLUDES THE CITY OF WINDSOR LOCKS...
  TOLLAND COUNTY IN NORTHERN CONNECTICUT...
  THIS INCLUDES THE CITIES OF...VERNON...MANSFIELD...
  NORTHWESTERN WINDHAM COUNTY IN NORTHERN CONNECTICUT...
  HAMPDEN COUNTY IN WESTERN MASSACHUSETTS...
  THIS INCLUDES THE CITIES OF...SPRINGFIELD...CHICOPEE...
  SOUTHERN HAMPSHIRE COUNTY IN WESTERN MASSACHUSETTS...

* UNTIL 915 PM EDT

* AT 808 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
  WESTFIELD...OR 9 MILES WEST OF CHICOPEE...AND WAS MOVING EAST AT 35
  MPH.

* SOME LOCATIONS IN THE WARNING INCLUDE...BLOOMFIELD...EAST GRANBY...
  EASTHAMPTON...WEST SPRINGFIELD...HOLYOKE...SUFFIELD...WINDSOR...
  AGAWAM...SOUTH WINDSOR...EAST WINDSOR...SOUTH HADLEY...
  LONGMEADOW...ENFIELD...GRANBY...EAST LONGMEADOW...LUDLOW...
  ELLINGTON...SOMERS...WILBRAHAM...HAMPDEN...BELCHERTOWN...TOLLAND...
  PALMER...MONSON...COVENTRY...STAFFORD...WARE...WILLINGTON...
  WALES...BRIMFIELD...WARREN...WEST BROOKFIELD...HOLLAND...UNION...
  BROOKFIELD...ASHFORD AND CHAPLIN.

A TORNADO WATCH IS ALSO IN EFFECT. SEVERE THUNDERSTORMS CAN PRODUCE
TORNADOES WITH LITTLE OR NO ADVANCED WARNING. REMAIN CALM...BUT TAKE
COVER NOW. GO TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A STURDY
BUILDING. AVOID WINDOWS.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 1100 PM EDT WEDNESDAY EVENING
FOR NORTHERN CONNECTICUT AND MASSACHUSETTS AND SOUTHERN NEW HAMPSHIRE
AND CENTRAL RHODE ISLAND.

&&

LAT...LON 4181 7295 4188 7295 4190 7294 4190 7292
      4197 7290 4197 7296 4232 7289 4227 7209
      4178 7211 4179 7300 4181 7300
TIME...MOT...LOC 0010Z 272DEG 30KT 4216 7273

$$

DOODY
2 follow-up statements
237 
WWUS51 KBOX 020029
SVSBOX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TAUNTON MA
829 PM EDT WED JUN 1 2011

CTC003-013-015-MAC013-015-027-020115-
/O.CON.KBOX.SV.W.0022.000000T0000Z-110602T0115Z/
HARTFORD CT-TOLLAND CT-WINDHAM CT-WORCESTER MA-HAMPSHIRE MA-
HAMPDEN MA-
829 PM EDT WED JUN 1 2011

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 915 PM EDT
FOR EASTERN HAMPDEN...SOUTHEASTERN HAMPSHIRE...SOUTHWESTERN
WORCESTER...WEST CENTRAL WINDHAM...TOLLAND AND NORTHERN HARTFORD
COUNTIES...

AT 827 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING NICKEL
SIZE HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH.  THESE STORMS
WERE LOCATED ALONG A LINE EXTENDING FROM BELCHERTOWN TO EAST
LONGMEADOW TO BLOOMFIELD...OR ALONG A LINE EXTENDING FROM 8 MILES
NORTHEAST OF CHICOPEE TO SPRINGFIELD TO WEST HARTFORD...MOVING EAST
AT 35 MPH.

OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
WILBRAHAM...WINDSOR...HAMPDEN...SOMERS...EAST WINDSOR...SOUTH
WINDSOR...PALMER...MONSON...ELLINGTON...WARE...ROCKVILLE...WARREN...
VERNON...STAFFORD...WALES...BRIMFIELD...STAFFORD SPRINGS...WEST
BROOKFIELD...TOLLAND...HOLLAND...BROOKFIELD...UNION...WILLINGTON...
MANSFIELD...STORRS...ASHFORD AND CHAPLIN

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A TORNADO WATCH REMAINS IN EFFECT FOR THE WARNED AREA. IF A TORNADO
IS SPOTTED...ACT QUICKLY AND MOVE TO A PLACE OF SAFETY IN A STURDY
STRUCTURE...SUCH AS A BASEMENT OR SMALL INTERIOR ROOM.

&&

LAT...LON 4181 7295 4188 7295 4190 7294 4190 7292
      4230 7248 4227 7209 4178 7211 4179 7300
      4181 7300
TIME...MOT...LOC 0028Z 277DEG 31KT 4222 7241 4205 7247
          4181 7274

$$

BELK
391 
WWUS51 KBOX 020054
SVSBOX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TAUNTON MA
854 PM EDT WED JUN 1 2011

CTC003-013-015-MAC013-015-027-020104-
/O.CAN.KBOX.SV.W.0022.000000T0000Z-110602T0115Z/
HARTFORD CT-TOLLAND CT-WINDHAM CT-WORCESTER MA-HAMPSHIRE MA-
HAMPDEN MA-
854 PM EDT WED JUN 1 2011

...THE SEVERE THUNDERSTORM WARNING FOR EASTERN HAMPDEN...SOUTHEASTERN
HAMPSHIRE...SOUTHWESTERN WORCESTER...WEST CENTRAL WINDHAM...TOLLAND
AND NORTHERN HARTFORD COUNTIES IS CANCELLED...

A TORNADO WATCH REMAINS IN EFFECT UNTIL 1100 PM EDT WEDNESDAY EVENING
FOR NORTHERN CONNECTICUT AND MASSACHUSETTS AND SOUTHERN NEW HAMPSHIRE
AND CENTRAL RHODE ISLAND.

LAT...LON 4181 7295 4188 7295 4190 7294 4190 7292
      4230 7248 4227 7209 4178 7211 4179 7300
      4181 7300
TIME...MOT...LOC 0054Z 277DEG 31KT 4219 7211 4202 7217
          4178 7244

$$

DOODY

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 1, 8:03 PM EDTSevere Thunderstorm WarningBOXMiddlesex, Worcester27 min
Jun 1, 8:15 PM EDTSpecial Weather StatementBOXMiddlesex30 min
Jun 1, 8:22 PM EDTSevere Thunderstorm WarningBOXMiddlesex, Norfolk, Worcester38 min
Jun 1, 8:39 PM EDTSpecial Weather StatementBOXEssex, Middlesex, Suffolk66 min
Jun 1, 8:47 PM EDTSpecial Marine WarningBOX58 min
Jun 1, 8:48 PM EDTSevere Thunderstorm WarningBOXBarnstable, Essex, Middlesex, Norfolk, Plymouth, Suffolk and 1 more42 min
Jun 1, 8:58 PM EDTSevere Thunderstorm WarningBOXMiddlesex, Norfolk, Worcester32 min
Jun 1, 9:03 PM EDTSpecial Marine WarningBOX57 min
Jun 1, 9:22 PM EDTSpecial Weather StatementBOXDukes53 min
Jun 1, 9:34 PM EDTSpecial Marine WarningBOX56 min
Jun 1, 9:34 PM EDTSpecial Weather StatementBOXNorfolk, Suffolk56 min
Jun 1, 9:54 PM EDTSpecial Marine WarningBOX50 min
Jun 1, 9:58 PM EDTSpecial Marine WarningBOX62 min
Jun 1, 10:53 PM EDTSpecial Weather StatementBOXBarnstable37 min
Jun 1, 10:55 PM EDTSpecial Marine WarningBOX40 min
Jun 1, 11:49 PM EDTSpecial Marine WarningBOX26 min
Jun 1, 11:55 PM EDTSpecial Weather StatementBOXNantucket50 min

Nearby

Severe Thunderstorm Warnings in Connecticut, 2011Severe Thunderstorm Warnings in Massachusetts, 2011Every severe thunderstorm warning in 2011

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.