Alert archive / Massachusetts / Severe Thunderstorm Warnings in 2011

Severe Thunderstorm Warning 29, NWS Boston/Norton, MA

June 8, 2011Providence County, Rhode Island; Bristol County, Norfolk County, Plymouth County, Massachusetts

NWS Boston/Norton, MA issued this severe thunderstorm warning at Jun 8, 2011, 10:21 PM EDT for Providence County, Rhode Island; Bristol County, Norfolk County, Plymouth County, Massachusetts. It was in force for 24 min. 1 report 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, 10:21 PM EDT (02:21 UTC)
Expired
Jun 8, 2011, 10:45 PM EDT
In force
24 min
Issued by
NWS Boston/Norton, MA
Area
Storm-based polygon

Counties Bristol County, MA, Norfolk County, MA, Plymouth County, MA, Providence County, RI

The radar

The Boston radar (KBOX), 5 km from the middle of the area, began a volume at 02:21 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, 10:47 PM EDTHAIL 0.75Taunton, MA

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Chatham, MA (KCHH), launched 00:00Z, 2.4 hours before the alert went out and 101 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, Chatham, MA at 00:00Z on 2011-06-09Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 522 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Chatham, MA at 00:00Z on 2011-06-09The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 63 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
522 J/kg
Mixed-layer CIN
-245 J/kg
Mixed-layer LCL
1312 m above ground
0-6 km bulk shear
31 kt
0-1 km storm-relative helicity
63 m²/s²
0-3 km storm-relative helicity
131 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.1

Open this sounding in Storm Lab

The text

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

458 
WUUS51 KBOX 090221
SVRBOX
MAC005-021-023-RIC007-090245-
/O.NEW.KBOX.SV.W.0029.110609T0221Z-110609T0245Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TAUNTON MA
1021 PM EDT WED JUN 8 2011

THE NATIONAL WEATHER SERVICE IN TAUNTON HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  EAST CENTRAL PROVIDENCE COUNTY IN RHODE ISLAND...
  SOUTHERN NORFOLK COUNTY IN EASTERN MASSACHUSETTS...
  NORTHERN BRISTOL COUNTY IN SOUTHEAST MASSACHUSETTS...
  THIS INCLUDES THE CITIES OF...TAUNTON...NORTH ATTLEBOROUGH...
  ATTLEBOROUGH...
  WEST CENTRAL PLYMOUTH COUNTY IN SOUTHEAST MASSACHUSETTS...
  THIS INCLUDES THE CITY OF BROCKTON...

* UNTIL 1045 PM EDT

* AT 1017 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 WRENTHAM TO PLAINVILLE TO CENTRAL FALLS TO 7 MILES  
  NORTHWEST OF CENTRAL FALLS...OR ALONG A LINE EXTENDING FROM        
  FRANKLIN TO NORTH ATTLEBOROUGH TO WOONSOCKET...AND WAS MOVING EAST 
  AT 45 MPH.

* SOME LOCATIONS IN THE WARNING INCLUDE...NORFOLK...MANSFIELD...
  PAWTUCKET...FOXBOROUGH...NORTON...SHARON...STOUGHTON...EASTON...
  RAYNHAM...AVON...WEST BRIDGEWATER...BRIDGEWATER...ABINGTON...
  WHITMAN...ROCKLAND...MIDDLEBOROUGH...LAKEVILLE...HANSON...
  HALIFAX...FREETOWN...EAST BRIDGEWATER...DIGHTON AND BERKLEY.

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
WEDNESDAY EVENING FOR NORTHERN CONNECTICUT AND SOUTHEAST
MASSACHUSETTS.

&&

LAT...LON 4214 7085 4196 7084 4189 7088 4179 7097
      4188 7146 4198 7141 4202 7134 4212 7136
TIME...MOT...LOC 0220Z 283DEG 41KT 4209 7135 4202 7130
          4192 7137 4192 7147

$$

SIPPRELL
2 follow-up statements
094 
WWUS51 KBOX 090236
SVSBOX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TAUNTON MA
1036 PM EDT WED JUN 8 2011

MAC021-RIC007-090246-
/O.CAN.KBOX.SV.W.0029.000000T0000Z-110609T0245Z/
NORFOLK MA-PROVIDENCE RI-
1036 PM EDT WED JUN 8 2011

...THE SEVERE THUNDERSTORM WARNING FOR EAST CENTRAL PROVIDENCE AND
SOUTHERN NORFOLK COUNTIES IS CANCELLED...

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

LAT...LON 4188 7126 4196 7125 4200 7122 4203 7118
      4206 7085 4196 7084 4189 7088 4179 7097
TIME...MOT...LOC 0236Z 283DEG 41KT 4205 7111 4198 7106
          4188 7113 4188 7123

$$

MAC005-023-090245-
/O.CON.KBOX.SV.W.0029.000000T0000Z-110609T0245Z/
PLYMOUTH MA-BRISTOL MA-
1036 PM EDT WED JUN 8 2011

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1045 PM EDT
FOR NORTHERN BRISTOL AND WEST CENTRAL PLYMOUTH COUNTIES IN SOUTHEAST
MASSACHUSETTS...

AT 1034 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 EASTON TO TAUNTON TO 7 MILES SOUTHWEST OF NORTON...OR
ALONG A LINE EXTENDING FROM 6 MILES WEST OF BROCKTON TO TAUNTON TO
ATTLEBOROUGH...MOVING EAST AT 45 MPH.

OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
RAYNHAM...WEST BRIDGEWATER...BRIDGEWATER...MIDDLEBOROUGH...
LAKEVILLE...HALIFAX...FREETOWN...EAST BRIDGEWATER AND BERKLEY

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

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

&&

LAT...LON 4188 7126 4196 7125 4200 7122 4203 7118
      4206 7085 4196 7084 4189 7088 4179 7097
TIME...MOT...LOC 0236Z 283DEG 41KT 4205 7111 4198 7106
          4188 7113 4188 7123

$$

SIPPRELL
421 
WWUS51 KBOX 090243
SVSBOX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TAUNTON MA
1043 PM EDT WED JUN 8 2011

MAC005-023-090253-
/O.EXP.KBOX.SV.W.0029.000000T0000Z-110609T0245Z/
PLYMOUTH MA-BRISTOL MA-
1043 PM EDT WED JUN 8 2011

...THE SEVERE THUNDERSTORM WARNING FOR NORTHERN BRISTOL AND WEST
CENTRAL PLYMOUTH COUNTIES IN SOUTHEAST MASSACHUSETTS WILL EXPIRE AT
1045 PM EDT...

AN OCCASIONAL GUST OF 40 MPH WILL BE POSSIBLE WITH THIS STORM WITH 
HEAVY RAINS AND FREQUENT LIGHTNING.

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

LAT...LON 4188 7126 4196 7125 4200 7122 4203 7118
      4206 7085 4196 7084 4189 7088 4179 7097
TIME...MOT...LOC 0243Z 283DEG 41KT 4203 7101 4196 7096
          4186 7103 4186 7113

$$

SIPPRELL

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 8, 9:42 PM EDTSevere Thunderstorm WarningBOXProvidence48 min
Jun 8, 10:52 PM EDTSevere Thunderstorm WarningBOXNewport38 min
Jun 8, 10:54 PM EDTSpecial Weather StatementBOXWashington36 min
Jun 9, 1:40 AM EDTSevere Thunderstorm WarningBOXBristol, Kent, Providence50 min
Jun 9, 2:08 AM EDTSpecial Weather StatementBOXKent, Newport67 min
Jun 9, 2:22 AM EDTSevere Thunderstorm WarningBOXBristol, Newport23 min
Jun 9, 6:54 AM EDTSevere Thunderstorm WarningBOXKent, Providence, Washington51 min
Jun 9, 4:54 PM EDTSevere Thunderstorm WarningBOXProvidence54 min
Jun 9, 5:24 PM EDTSevere Thunderstorm WarningBOXBristol, Kent, Providence66 min
Jun 9, 5:52 PM EDTSevere Thunderstorm WarningBOXBristol, Kent, Newport, Washington53 min
Jun 9, 6:13 PM EDTSevere Thunderstorm WarningBOXNewport62 min
Jun 9, 6:39 PM EDTSpecial Weather StatementBOXWashington36 min
Jun 8, 8:12 PM EDTSevere Thunderstorm WarningBOXFranklin, Hampden, Hampshire48 min
Jun 8, 8:37 PM EDTSpecial Weather StatementBOXFranklin23 min
Jun 8, 8:56 PM EDTSevere Thunderstorm WarningBOXFranklin, Hampden, Hampshire, Worcester49 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, 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, 2:12 AM EDTSpecial Marine WarningBOX48 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, 5:00 PM EDTSpecial Marine WarningBOX2 hr
Jun 9, 5:38 PM EDTSpecial Marine WarningBOX112 min
Jun 9, 6:14 PM EDTSpecial Marine WarningBOX2 hr
Jun 9, 6:49 PM EDTSevere Thunderstorm WarningBOXBarnstable, Dukes, Nantucket56 min

Nearby

Severe Thunderstorm Warnings in Massachusetts, 2011Severe Thunderstorm Warnings in Rhode Island, 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.