Alert archive / Massachusetts / Severe Thunderstorm Warnings in 2011

Severe Thunderstorm Warning 48, NWS Boston/Norton, MA

June 9, 2011Barnstable County, Bristol County, Plymouth County, Massachusetts; Newport County, Rhode Island

NWS Boston/Norton, MA issued this severe thunderstorm warning at Jun 9, 2011, 6:13 PM EDT for Barnstable County, Bristol County, Plymouth County, Massachusetts; Newport County, Rhode Island. It was in force for 62 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 9, 2011, 6:13 PM EDT (22:13 UTC)
Expired
Jun 9, 2011, 7:15 PM EDT
In force
62 min
Issued by
NWS Boston/Norton, MA
Area
Storm-based polygon

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

The radar

The Boston radar (KBOX), 47 km from the middle of the area, began a volume at 22:14 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 9, 2:34 PM EDTSevere Thunderstorm WatchSPC7 hr

The nearest sounding before it

Chatham, MA (KCHH), launched 12:00Z, 10.2 hours before the alert went out and 66 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 12:00Z on 2011-06-09Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 47 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 12:00Z on 2011-06-09The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 4 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
47 J/kg
Mixed-layer CIN
-267 J/kg
Mixed-layer LCL
1937 m above ground
0-6 km bulk shear
37 kt
0-1 km storm-relative helicity
4 m²/s²
0-3 km storm-relative helicity
52 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.

146 
WUUS51 KBOX 092213
SVRBOX
MAC001-005-023-RIC005-092315-
/O.NEW.KBOX.SV.W.0048.110609T2213Z-110609T2315Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TAUNTON MA
613 PM EDT THU JUN 9 2011

THE NATIONAL WEATHER SERVICE IN TAUNTON HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NEWPORT COUNTY IN RHODE ISLAND...
  THIS INCLUDES THE CITY OF NEWPORT...
  BARNSTABLE COUNTY IN SOUTHEAST MASSACHUSETTS...
  THIS INCLUDES THE CITIES OF...FALMOUTH...BARNSTABLE...
  SOUTHERN BRISTOL COUNTY IN SOUTHEAST MASSACHUSETTS...
  THIS INCLUDES THE CITIES OF...NEW BEDFORD...FALL RIVER...
  SOUTHERN PLYMOUTH COUNTY IN SOUTHEAST MASSACHUSETTS...
  THIS INCLUDES THE CITY OF PLYMOUTH...

* UNTIL 715 PM EDT

* AT 608 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 6 MILES NORTH OF DUXBURY TO 12 MILES WEST OF FALL RIVER...OR
  ALONG A LINE EXTENDING FROM 12 MILES NORTH OF PLYMOUTH TO
  BARRINGTON...AND WAS MOVING EAST AT 35 MPH.

* SOME LOCATIONS IN THE WARNING INCLUDE...PLYMPTON...KINGSTON...
  LITTLE COMPTON...WESTPORT...CARVER...DARTMOUTH...ACUSHNET...
  ROCHESTER...WAREHAM...MARION...MATTAPOISETT...PROVINCETOWN...
  BOURNE...SANDWICH...TRURO...WELLFLEET AND MASHPEE.

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 800 PM EDT
THURSDAY EVENING FOR SOUTHERN NEW HAMPSHIRE. A SEVERE THUNDERSTORM
WATCH ALSO REMAINS IN EFFECT UNTIL 1000 PM EDT THURSDAY EVENING FOR
NORTHERN CONNECTICUT AND MASSACHUSETTS AND CENTRAL RHODE ISLAND.

&&

LAT...LON 4155 7048 4146 7080 4158 7065 4172 7071
      4151 7095 4155 7122 4145 7141 4209 7064
      4189 7009 4208 7022 4208 7014 4208 7012
      4207 7009 4205 7006 4198 6999
TIME...MOT...LOC 2213Z 286DEG 31KT 4211 7065 4173 7127

$$

KJC
2 follow-up statements
501 
WWUS51 KBOX 092247
SVSBOX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TAUNTON MA
647 PM EDT THU JUN 9 2011

RIC005-092257-
/O.CAN.KBOX.SV.W.0048.000000T0000Z-110609T2315Z/
NEWPORT RI-
647 PM EDT THU JUN 9 2011

...THE SEVERE THUNDERSTORM WARNING FOR NEWPORT COUNTY IS CANCELLED...

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 800 PM EDT
THURSDAY EVENING FOR SOUTHERN NEW HAMPSHIRE. A SEVERE THUNDERSTORM
WATCH ALSO REMAINS IN EFFECT UNTIL 1000 PM EDT THURSDAY EVENING FOR
NORTHERN CONNECTICUT AND MASSACHUSETTS AND CENTRAL RHODE ISLAND.

LAT...LON 4155 7048 4148 7077 4158 7065 4171 7067
      4172 7071 4159 7086 4161 7090 4151 7095
      4154 7102 4188 7053 4177 7048 4174 7029
      4204 7016 4176 7028 4191 7008 4203 7010
      4208 7022 4207 7009 4199 7000
TIME...MOT...LOC 2247Z 286DEG 31KT 4197 7033 4154 7097

$$

MAC001-005-023-092315-
/O.CON.KBOX.SV.W.0048.000000T0000Z-110609T2315Z/
BARNSTABLE MA-PLYMOUTH MA-BRISTOL MA-
647 PM EDT THU JUN 9 2011

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 715 PM EDT
FOR SOUTHEASTERN BRISTOL...SOUTHEASTERN PLYMOUTH AND BARNSTABLE
COUNTIES IN SOUTHEAST MASSACHUSETTS...

AT 646 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 10 MILES SOUTHWEST OF PROVINCETOWN TO 12 MILES
SOUTHWEST OF MATTAPOISETT...OR ALONG A LINE EXTENDING FROM 17 MILES
EAST OF PLYMOUTH TO 9 MILES SOUTH OF NEW BEDFORD...MOVING EAST AT 35
MPH.

OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
BOURNE...SANDWICH...TRURO...MASHPEE AND FALMOUTH

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 800 PM EDT
THURSDAY EVENING FOR SOUTHERN NEW HAMPSHIRE. A SEVERE THUNDERSTORM
WATCH ALSO REMAINS IN EFFECT UNTIL 1000 PM EDT THURSDAY EVENING FOR
NORTHERN CONNECTICUT AND MASSACHUSETTS AND CENTRAL RHODE ISLAND.

&&

LAT...LON 4155 7048 4148 7077 4158 7065 4171 7067
      4172 7071 4159 7086 4161 7090 4151 7095
      4154 7102 4188 7053 4177 7048 4174 7029
      4204 7016 4176 7028 4191 7008 4203 7010
      4208 7022 4207 7009 4199 7000
TIME...MOT...LOC 2247Z 286DEG 31KT 4197 7033 4154 7097

$$

KJC
625 
WWUS51 KBOX 092306
SVSBOX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TAUNTON MA
706 PM EDT THU JUN 9 2011

MAC001-005-023-092316-
/O.EXP.KBOX.SV.W.0048.000000T0000Z-110609T2315Z/
BARNSTABLE MA-PLYMOUTH MA-BRISTOL MA-
706 PM EDT THU JUN 9 2011

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN BRISTOL...
SOUTHEASTERN PLYMOUTH AND BARNSTABLE COUNTIES IN SOUTHEAST
MASSACHUSETTS WILL EXPIRE AT 715 PM EDT...

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 1000 PM EDT
THURSDAY EVENING FOR SOUTHEAST MASSACHUSETTS.

LAT...LON 4155 7048 4148 7077 4158 7065 4171 7067
      4172 7071 4159 7086 4161 7090 4151 7095
      4154 7102 4188 7053 4177 7048 4174 7029
      4204 7016 4176 7028 4191 7008 4203 7010
      4208 7022 4207 7009 4199 7000
TIME...MOT...LOC 2306Z 286DEG 31KT 4192 7012 4149 7076

$$

KJC

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, 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, 6:14 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.