Alert archive / Massachusetts / Severe Thunderstorm Warnings in 2011

Severe Thunderstorm Warning 26, NWS Boston/Norton, MA

June 8, 2011Franklin County, Hampden County, Hampshire County, Massachusetts; Capitol Planning Region, Connecticut

NWS Boston/Norton, MA issued this severe thunderstorm warning at Jun 8, 2011, 8:12 PM EDT for Franklin County, Hampden County, Hampshire County, Massachusetts; Capitol Planning Region, Connecticut. It was in force for 48 min. 4 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, 2011, 8:12 PM EDT (00:12 UTC)
Expired
Jun 8, 2011, 9:00 PM EDT
In force
48 min
Issued by
NWS Boston/Norton, MA
Area
Storm-based polygon

Counties Capitol Planning Region, CT, Franklin County, MA, Hampden County, MA, Hampshire County, MA

The radar

The Albany radar (KENX), 101 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.

What was reported inside it

TimeReportWhereRemark
Jun 8, 8:23 PM EDTHAIL 0.88Worthington, MA
Jun 8, 8:29 PM EDTTSTM WND DMGWorthington, MASEVERAL TREES DOWN UP TO 8 INCHES IN DIAMETER ON WEST STREET
Jun 8, 8:30 PM EDTTSTM WND DMGChesterfield, MASEVERAL TREES DOWN OFF ROUTE 143 ON A DIRT ROAD
Jun 8, 8:52 PM EDTTSTM WND DMGWestfield, MALARGE TREE DOWN ON GRANVILLE ROAD

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.

IssuedProductOfficeLasted
Jun 8, 6:45 PM EDTSevere Thunderstorm WatchSPC4 hr

The nearest sounding before it

Albany, NY (KALY), launched 00:00Z, 0.2 hours before the alert went out and 90 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, Albany, NY at 00:00Z on 2011-06-09Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 3772 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, Albany, NY at 00:00Z on 2011-06-09The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 26 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
3772 J/kg
Mixed-layer CIN
-59 J/kg
Mixed-layer LCL
1390 m above ground
0-6 km bulk shear
38 kt
0-1 km storm-relative helicity
26 m²/s²
0-3 km storm-relative helicity
167 m²/s²
Significant tornado parameter
1.2
Supercell composite
10.5

Open this sounding in Storm Lab

The text

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

120 
WUUS51 KBOX 090012
SVRBOX
CTC003-MAC011-013-015-090100-
/O.NEW.KBOX.SV.W.0026.110609T0012Z-110609T0100Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TAUNTON MA
812 PM EDT WED JUN 8 2011

THE NATIONAL WEATHER SERVICE IN TAUNTON HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHWESTERN HARTFORD COUNTY IN NORTHERN CONNECTICUT...
  SOUTHWESTERN FRANKLIN COUNTY IN WESTERN MASSACHUSETTS...
  WESTERN HAMPDEN COUNTY IN WESTERN MASSACHUSETTS...
  WESTERN HAMPSHIRE COUNTY IN WESTERN MASSACHUSETTS...
  THIS INCLUDES THE CITY OF NORTHAMPTON...

* UNTIL 900 PM EDT

* AT 805 PM EDT...TRAINED SPOTTERS REPORTED A LINE OF SEVERE         
  THUNDERSTORMS PRODUCING QUARTER TO TWO INCH SIZE HAIL.  THESE      
  STORMS WERE LOCATED ALONG A LINE EXTENDING FROM 20 MILES NORTHWEST 
  OF EAST WINDSOR TO 16 MILES WEST OF EAST WINDSOR TO 17 MILES WEST  
  OF MIDDLEFIELD TO 30 MILES WEST OF MIDDLEFIELD TO 44 MILES WEST    
  OF MIDDLEFIELD...OR ALONG A LINE EXTENDING FROM 9 MILES WEST OF    
  NORTH ADAMS TO 17 MILES SOUTHWEST OF NORTH ADAMS TO 25 MILES       
  SOUTHWEST OF NORTH ADAMS TO 36 MILES SOUTHWEST OF NORTH ADAMS TO   
  48 MILES NORTHWEST OF TORRINGTON...AND WAS MOVING SOUTHEAST AT 45  
  MPH.

* SOME LOCATIONS IN THE WARNING INCLUDE...HAWLEY...PLAINFIELD...
  CHESTER...WORTHINGTON...CUMMINGTON...ASHFIELD...HUNTINGTON...
  BLANDFORD...CHESTERFIELD...GOSHEN...TOLLAND...CONWAY...RUSSELL...
  MONTGOMERY...GRANVILLE...WESTHAMPTON...WILLIAMSBURG...WHATELY...
  SOUTHAMPTON...SUNDERLAND...WESTFIELD...SOUTHWICK...HATFIELD...
  EASTHAMPTON...HADLEY...WEST SPRINGFIELD...HOLYOKE...AGAWAM...
  SUFFIELD...GRANBY AND EAST GRANBY.

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 4214 7308 4216 7303 4225 7301 4230 7301
      4233 7307 4239 7307 4240 7301 4264 7296
      4264 7295 4249 7256 4205 7259 4194 7264
      4187 7295 4197 7290 4197 7303 4203 7302
      4204 7306 4211 7308
TIME...MOT...LOC 0010Z 309DEG 40KT 4262 7323 4244 7323
          4234 7328 4227 7354 4223 7381

$$

SIPPRELL
1 follow-up statement
575 
WWUS51 KBOX 090033
SVSBOX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TAUNTON MA
833 PM EDT WED JUN 8 2011

CTC003-MAC011-013-015-090100-
/O.CON.KBOX.SV.W.0026.000000T0000Z-110609T0100Z/
HARTFORD CT-FRANKLIN MA-HAMPSHIRE MA-HAMPDEN MA-
833 PM EDT WED JUN 8 2011

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 900 PM EDT
FOR WESTERN HAMPDEN...WESTERN HAMPSHIRE...SOUTHWESTERN FRANKLIN AND
NORTHWESTERN HARTFORD COUNTIES...

AT 827 PM EDT...TRAINED WEATHER SPOTTERS REPORTED A LINE OF SEVERE 
THUNDERSTORMS PRODUCING NICKEL SIZE HAIL AND ESTIMATED 50 MPH WINDS 
IN WORTHINGTON MASSACHUSETTS. 

THESE STORMS WERE LOCATED ALONG A LINE EXTENDING FROM HAWLEY TO EAST 
WINDSOR TO MIDDLEFIELD TO 7 MILES SOUTHWEST OF CHESTER TO 17 MILES 
WEST OF TOLLAND TO 31 MILES WEST OF TOLLAND...OR ALONG A LINE 
EXTENDING FROM 11 MILES SOUTHEAST OF NORTH ADAMS TO 16 MILES SOUTH 
OF NORTH ADAMS TO 18 MILES WEST OF NORTHAMPTON TO 22 MILES WEST OF 
NORTHAMPTON TO 24 MILES NORTHWEST OF TORRINGTON TO 31 MILES 
NORTHWEST OF TORRINGTON...MOVING SOUTHEAST AT 45 MPH.

OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
PLAINFIELD...CUMMINGTON...WORTHINGTON...BLANDFORD...ASHFIELD...
HUNTINGTON...CHESTERFIELD...GOSHEN...RUSSELL...CONWAY...MONTGOMERY...
GRANVILLE...WESTHAMPTON...WILLIAMSBURG...WESTFIELD...SOUTHAMPTON...
WHATELY...SUNDERLAND...SOUTHWICK...EASTHAMPTON...HATFIELD...HADLEY...
WEST SPRINGFIELD...AGAWAM...SUFFIELD...GRANBY...EAST GRANBY AND
HOLYOKE

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THIS IS A DANGEROUS STORM. IF YOU ARE IN ITS PATH...PREPARE
IMMEDIATELY FOR DAMAGING WINDS...LARGE HAIL...AND DEADLY CLOUD
TO GROUND LIGHTNING. PEOPLE OUTSIDE SHOULD MOVE TO A SHELTER...
PREFERABLY INSIDE A STRONG BUILDING BUT AWAY FROM WINDOWS.

HAIL UP TO TWO INCHES IN DIAMETER HAS BEEN REPORTED IN PITTSFIELD 
MASSACHUSETTS WITH THIS STORM. IF YOU ARE IN THE PATH OF THE 
STORM...TAKE IMMEDIATE ACTION TO PROTECT LIFE AND PROPERTY.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 1100 PM EDT
WEDNESDAY EVENING FOR NORTHERN CONNECTICUT AND SOUTHERN MASSACHUSETTS
AND SOUTHERN NEW HAMPSHIRE.

&&

LAT...LON 4214 7308 4216 7303 4225 7301 4230 7301
      4233 7307 4239 7307 4240 7301 4264 7296
      4264 7295 4249 7256 4205 7259 4194 7264
      4187 7295 4197 7290 4197 7303 4203 7302
      4204 7306 4211 7308
TIME...MOT...LOC 0031Z 309DEG 40KT 4257 7289 4244 7297
          4229 7299 4219 7304 4212 7330 4208 7357

$$

SIPPRELL

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 8, 8:37 PM EDTSpecial Weather StatementBOXFranklin23 min
Jun 8, 8:56 PM EDTSevere Thunderstorm WarningBOXFranklin, Hampden, Hampshire, Worcester49 min
Jun 8, 9:42 PM EDTSevere Thunderstorm WarningBOXMiddlesex, Norfolk, Worcester48 min
Jun 8, 10:21 PM EDTSevere Thunderstorm WarningBOXBristol, Norfolk, Plymouth24 min
Jun 8, 10:33 PM EDTSevere Thunderstorm WarningBOXBristol, Plymouth42 min
Jun 8, 10:34 PM EDTSpecial Marine WarningBOX41 min
Jun 8, 10:41 PM EDTSpecial Marine WarningBOX49 min
Jun 8, 10:51 PM EDTSpecial Marine WarningBOX39 min
Jun 8, 10:52 PM EDTSevere Thunderstorm WarningBOXBarnstable, Bristol, Dukes, Plymouth38 min
Jun 8, 11:17 PM EDTSpecial Marine WarningBOX58 min
Jun 9, 12:19 AM EDTSpecial Marine WarningBOX41 min
Jun 9, 12:37 AM EDTSevere Thunderstorm WarningBOXHampden, Hampshire38 min
Jun 9, 1:04 AM EDTSevere Thunderstorm WarningBOXHampden, Worcester41 min
Jun 9, 1:40 AM EDTSevere Thunderstorm WarningBOXBristol50 min
Jun 9, 2:12 AM EDTSpecial Marine WarningBOX48 min
Jun 9, 2:22 AM EDTSevere Thunderstorm WarningBOXBristol, Plymouth23 min
Jun 9, 2:36 AM EDTSpecial Marine WarningBOX54 min
Jun 9, 2:42 AM EDTSevere Thunderstorm WarningBOXBarnstable, Bristol, Dukes, Plymouth27 min
Jun 9, 2:53 AM EDTSpecial Marine WarningBOX52 min
Jun 9, 8:38 AM EDTSpecial Weather StatementBOXNorfolk, Plymouth52 min
Jun 9, 10:21 AM EDTSpecial Weather StatementBOXHampshire39 min
Jun 9, 10:24 AM EDTSevere Thunderstorm WarningBOXHampden, Hampshire22 min
Jun 9, 3:00 PM EDTSpecial Weather StatementBOXFranklin, Hampshire90 min
Jun 9, 3:06 PM EDTSevere Thunderstorm WarningBOXFranklin, Hampshire54 min
Jun 9, 3:55 PM EDTSevere Thunderstorm WarningBOXFranklin, Hampshire, Middlesex, Worcester65 min
Jun 9, 3:57 PM EDTSpecial Marine WarningBOX108 min
Jun 9, 4:00 PM EDTSevere Thunderstorm WarningBOXFranklin, Hampden, Hampshire, Worcester60 min
Jun 9, 4:23 PM EDTSevere Thunderstorm WarningBOXEssex, Franklin, Hampshire, Middlesex, Norfolk, Suffolk and 1 more67 min
Jun 9, 4:54 PM EDTSevere Thunderstorm WarningBOXHampden, Hampshire, Middlesex, Worcester54 min
Jun 9, 5:00 PM EDTSpecial Marine WarningBOX2 hr
Jun 9, 5:24 PM EDTSevere Thunderstorm WarningBOXBarnstable, Bristol, Essex, Middlesex, Norfolk, Plymouth and 2 more66 min
Jun 9, 5:38 PM EDTSpecial Marine WarningBOX112 min
Jun 9, 5:52 PM EDTSevere Thunderstorm WarningBOXBristol53 min
Jun 9, 6:13 PM EDTSevere Thunderstorm WarningBOXBarnstable, Bristol, Plymouth62 min
Jun 9, 6:14 PM EDTSpecial Marine WarningBOX2 hr
Jun 9, 6:49 PM EDTSevere Thunderstorm WarningBOXBarnstable, Dukes, Nantucket56 min
Jun 8, 9:23 PM EDTSpecial Weather StatementBOX22 min
Jun 9, 6:54 AM EDTSevere Thunderstorm WarningBOXNortheastern Connecticut Planning Region51 min
Jun 9, 4:39 PM EDTSevere Thunderstorm WarningBOXCapitol Planning Region66 min
Jun 9, 4:46 PM EDTAreal Flood AdvisoryBOXCapitol Planning Region3 hr

Nearby

Severe Thunderstorm Warnings in Massachusetts, 2011Severe Thunderstorm Warnings in Connecticut, 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.