Alert archive / Massachusetts / Severe Thunderstorm Warnings in 2011

Severe Thunderstorm Warning 31, NWS Boston/Norton, MA

June 8, 20114 counties in Massachusetts; Newport County, Rhode Island

NWS Boston/Norton, MA issued this severe thunderstorm warning at Jun 8, 2011, 10:52 PM EDT for 4 counties in Massachusetts; Newport County, Rhode Island. It was in force for 38 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, 10:52 PM EDT (02:52 UTC)
Expired
Jun 8, 2011, 11:30 PM EDT
In force
38 min
Issued by
NWS Boston/Norton, MA
Area
Storm-based polygon

Counties Barnstable County, MA, Bristol County, MA, Dukes County, MA, Plymouth County, MA, Newport County, RI

The radar

The Boston radar (KBOX), 59 km from the middle of the area, began a volume at 02:55 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, 10:55 PM EDTTSTM WND DMGNew Bedford, MALARGE BRANCH DOWN ON MARILYN STREET AND WIRES DOWN ON MILL ROAD

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, 2.9 hours before the alert went out and 68 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.

250 
WUUS51 KBOX 090252
SVRBOX
MAC001-005-007-023-RIC005-090330-
/O.NEW.KBOX.SV.W.0031.110609T0252Z-110609T0330Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TAUNTON MA
1052 PM EDT WED JUN 8 2011

THE NATIONAL WEATHER SERVICE IN TAUNTON HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHEASTERN NEWPORT COUNTY IN RHODE ISLAND...
  SOUTHWESTERN BARNSTABLE COUNTY IN SOUTHEAST MASSACHUSETTS...
  THIS INCLUDES THE CITY OF FALMOUTH...
  SOUTHERN BRISTOL COUNTY IN SOUTHEAST MASSACHUSETTS...
  THIS INCLUDES THE CITY OF NEW BEDFORD...
  DUKES COUNTY IN SOUTHEAST MASSACHUSETTS...
  THIS INCLUDES THE CITY OF VINEYARD HAVEN...
  SOUTHERN PLYMOUTH COUNTY IN SOUTHEAST MASSACHUSETTS...

* UNTIL 1130 PM EDT

* AT 1051 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING QUARTER SIZE
  HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH.  THESE STORMS WERE
  LOCATED ALONG A LINE EXTENDING FROM ROCHESTER TO NEW BEDFORD TO
  DARTMOUTH TO LITTLE COMPTON...OR ALONG A LINE EXTENDING FROM 7
  MILES NORTHEAST OF NEW BEDFORD TO NEW BEDFORD TO 9 MILES SOUTHWEST
  OF NEW BEDFORD TO 10 MILES EAST OF NEWPORT...AND WAS MOVING EAST AT
  35 MPH.

* SOME LOCATIONS IN THE WARNING INCLUDE...MATTAPOISETT...MARION...
  WAREHAM...BOURNE...SANDWICH...AQUINNAH...MASHPEE...CHILMARK...
  TISBURY...WEST TISBURY AND OAK BLUFFS.

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 4135 7085 4144 7071 4141 7096 4142 7096
      4155 7066 4172 7068 4158 7082 4161 7090
      4151 7095 4145 7119 4183 7099 4174 7031
      4160 7039 4147 7075 4146 7075 4148 7059
      4148 7056 4143 7055 4130 7078
TIME...MOT...LOC 0252Z 283DEG 32KT 4174 7085 4163 7092
          4155 7103 4150 7112

$$

SIPPRELL
2 follow-up statements
454 
WWUS51 KBOX 090312
SVSBOX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TAUNTON MA
1112 PM EDT WED JUN 8 2011

MAC005-RIC005-090322-
/O.CAN.KBOX.SV.W.0031.000000T0000Z-110609T0330Z/
NEWPORT RI-BRISTOL MA-
1112 PM EDT WED JUN 8 2011

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHERN BRISTOL COUNTY IN
SOUTHEAST MASSACHUSETTS...AND SOUTHEASTERN NEWPORT COUNTY IN RHODE
ISLAND IS CANCELLED...

LAT...LON 4135 7085 4144 7071 4141 7096 4142 7096
      4155 7066 4172 7068 4171 7069 4172 7069
      4178 7064 4174 7031 4160 7039 4147 7075
      4146 7075 4148 7059 4148 7056 4143 7055
      4130 7078
TIME...MOT...LOC 0312Z 283DEG 32KT 4172 7057 4165 7062
          4159 7069 4151 7080 4146 7089

$$

MAC001-007-023-090330-
/O.CON.KBOX.SV.W.0031.000000T0000Z-110609T0330Z/
DUKES MA-BARNSTABLE MA-PLYMOUTH MA-
1112 PM EDT WED JUN 8 2011

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1130 PM EDT
FOR SOUTHEASTERN PLYMOUTH...SOUTHWESTERN BARNSTABLE AND WESTERN DUKES
COUNTIES...

AT 1108 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING QUARTER
SIZE HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH.  THESE STORMS
WERE LOCATED ALONG A LINE EXTENDING FROM BOURNE TO 6 MILES SOUTHWEST
OF BOURNE TO 7 MILES NORTHWEST OF FALMOUTH TO 12 MILES WEST OF
TISBURY TO 11 MILES NORTHWEST OF AQUINNAH...OR ALONG A LINE EXTENDING
FROM 13 MILES NORTH OF FALMOUTH TO 8 MILES NORTHWEST OF FALMOUTH TO 7
MILES NORTHWEST OF FALMOUTH TO 11 MILES SOUTHEAST OF NEW BEDFORD TO
13 MILES SOUTH OF NEW BEDFORD...MOVING EAST AT 35 MPH.

OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
SANDWICH...MASHPEE...CHILMARK...WEST TISBURY...VINEYARD HAVEN AND OAK
BLUFFS

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

THIS STORM HAS HAD A HISTORY OF PRODUCING DIME SIZE HAIL AND WINDS 
IN EXCESS OF 40 MPH.

&&

LAT...LON 4135 7085 4144 7071 4141 7096 4142 7096
      4155 7066 4172 7068 4171 7069 4172 7069
      4178 7064 4174 7031 4160 7039 4147 7075
      4146 7075 4148 7059 4148 7056 4143 7055
      4130 7078
TIME...MOT...LOC 0312Z 283DEG 32KT 4172 7057 4165 7062
          4159 7069 4151 7080 4146 7089

$$

SIPPRELL
942 
WWUS51 KBOX 090329
SVSBOX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TAUNTON MA
1129 PM EDT WED JUN 8 2011

MAC001-007-023-090337-
/O.EXP.KBOX.SV.W.0031.000000T0000Z-110609T0330Z/
DUKES MA-BARNSTABLE MA-PLYMOUTH MA-
1129 PM EDT WED JUN 8 2011

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN PLYMOUTH...
SOUTHWESTERN BARNSTABLE AND WESTERN DUKES COUNTIES WILL EXPIRE AT
1130 PM EDT...

THE STORM HAS WEAKENED AND IS GRADUALLY MOVING SOUTHEAST OF THE 
WARNED AREA. STORMS CONTINUE  TO AFFECT MARTHAS VINEYARD AND AN 
OCCASIONAL GUST OF 40 MPH ALONG WITH SMALL HAIL AND FREQUENT 
LIGHTNING WILL BE POSSIBLE WITH THESE STORMS.

LAT...LON 4135 7085 4144 7071 4141 7096 4142 7096
      4155 7066 4172 7068 4171 7069 4172 7069
      4178 7064 4174 7031 4160 7039 4147 7075
      4146 7075 4148 7059 4148 7056 4143 7055
      4130 7078
TIME...MOT...LOC 0327Z 283DEG 32KT 4169 7040 4162 7045
          4156 7052 4148 7063 4143 7072

$$

SIPPRELL

The office that day

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

IssuedProductOfficeCountiesLasted
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, 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, 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, 10:54 PM EDTSpecial Weather StatementBOXWashington36 min
Jun 9, 2:08 AM EDTSpecial Weather StatementBOXKent, Newport67 min
Jun 9, 6:54 AM EDTSevere Thunderstorm WarningBOXKent, Providence, Washington51 min
Jun 9, 6:39 PM EDTSpecial Weather StatementBOXWashington36 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.