Alert archive / Rhode Island / Severe Thunderstorm Warnings in 2011

Severe Thunderstorm Warning 47, NWS Boston/Norton, MA

June 9, 20114 counties in Rhode Island; Bristol County, Massachusetts; Northeastern Connecticut Planning Region, Connecticut

NWS Boston/Norton, MA issued this severe thunderstorm warning at Jun 9, 2011, 5:52 PM EDT for 4 counties in Rhode Island; Bristol County, Massachusetts; Northeastern Connecticut Planning Region, Connecticut. It was in force for 53 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 9, 2011, 5:52 PM EDT (21:52 UTC)
Expired
Jun 9, 2011, 6:45 PM EDT
In force
53 min
Issued by
NWS Boston/Norton, MA
Area
Storm-based polygon

Counties Northeastern Connecticut Planning Region, CT, Bristol County, MA, Bristol County, RI, Kent County, RI, Newport County, RI, Washington County, RI

The radar

The Boston radar (KBOX), 53 km from the middle of the area, began a volume at 21:54 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 9, 6:20 PM EDTTSTM WND DMGSomerset, MAWIRES DOWN ON DORENCE STREET

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 9, 2:34 PM EDTSevere Thunderstorm WatchSPC7 hr

The nearest sounding before it

Chatham, MA (KCHH), launched 12:00Z, 9.9 hours before the alert went out and 129 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.

067 
WUUS51 KBOX 092152
SVRBOX
CTC015-MAC005-RIC001-003-005-009-092245-
/O.NEW.KBOX.SV.W.0047.110609T2152Z-110609T2245Z/

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

THE NATIONAL WEATHER SERVICE IN TAUNTON HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  BRISTOL COUNTY IN RHODE ISLAND...
  THIS INCLUDES THE CITIES OF...BRISTOL...BARRINGTON...
  KENT COUNTY IN RHODE ISLAND...
  THIS INCLUDES THE CITY OF WARWICK...
  NORTHWESTERN NEWPORT COUNTY IN RHODE ISLAND...
  WASHINGTON COUNTY IN RHODE ISLAND...
  THIS INCLUDES THE CITY OF SOUTH KINGSTOWN...
  SOUTHEASTERN WINDHAM COUNTY IN NORTHERN CONNECTICUT...
  THIS INCLUDES THE CITY OF PLAINFIELD...
  CENTRAL BRISTOL COUNTY IN SOUTHEAST MASSACHUSETTS...
  THIS INCLUDES THE CITY OF FALL RIVER...

* UNTIL 645 PM EDT

* AT 550 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 STERLING TO 42 MILES WEST OF WESTERLY...OR ALONG A LINE
  EXTENDING FROM 7 MILES NORTHEAST OF PLAINFIELD TO 6 MILES NORTHEAST
  OF GUILFORD...AND WAS MOVING EAST AT 40 MPH.

* SOME LOCATIONS IN THE WARNING INCLUDE...COVENTRY...WEST WARWICK...
  WEST GREENWICH...EXETER...EAST GREENWICH...WARREN...HOPKINTON...
  RICHMOND...SWANSEA...SOMERSET...TIVERTON...NORTH KINGSTOWN...
  PORTSMOUTH AND CHARLESTOWN.

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 4142 7180 4163 7179 4165 7202 4171 7185
      4175 7137 4159 7130 4175 7135 4177 7097
      4154 7132 4162 7134 4167 7141 4157 7143
      4151 7140 4158 7136 4151 7135 4136 7156
      4130 7189
TIME...MOT...LOC 2152Z 276DEG 36KT 4174 7178 4136 7259

$$

KJC
2 follow-up statements
808 
WWUS51 KBOX 092227
SVSBOX

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

CTC015-092237-
/O.CAN.KBOX.SV.W.0047.000000T0000Z-110609T2245Z/
WINDHAM CT-
627 PM EDT THU JUN 9 2011

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN WINDHAM 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 4170 7135 4167 7137 4166 7131 4170 7130
      4172 7134 4175 7135 4177 7098 4155 7132
      4157 7130 4159 7134 4157 7135 4151 7135
      4148 7141 4137 7155 4130 7189
TIME...MOT...LOC 2227Z 276DEG 36KT 4166 7121 4132 7176

$$

MAC005-RIC001-003-005-009-092245-
/O.CON.KBOX.SV.W.0047.000000T0000Z-110609T2245Z/
NEWPORT RI-BRISTOL RI-WASHINGTON RI-KENT RI-BRISTOL MA-
627 PM EDT THU JUN 9 2011

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 645 PM EDT
FOR CENTRAL BRISTOL COUNTY IN SOUTHEAST MASSACHUSETTS...AND EAST
CENTRAL KENT...WASHINGTON...BRISTOL AND NORTHWESTERN NEWPORT COUNTIES
IN RHODE ISLAND...

AT 623 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 BRISTOL TO 9 MILES SOUTHWEST OF CHARLESTOWN...OR ALONG
A LINE EXTENDING FROM BRISTOL TO 8 MILES EAST OF MYSTIC...MOVING EAST
AT 40 MPH.

OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO NORTH
KINGSTOWN...SWANSEA...TIVERTON...SOUTH KINGSTOWN...SOMERSET...
PORTSMOUTH AND FALL RIVER

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 4170 7135 4167 7137 4166 7131 4170 7130
      4172 7134 4175 7135 4177 7098 4155 7132
      4157 7130 4159 7134 4157 7135 4151 7135
      4148 7141 4137 7155 4130 7189
TIME...MOT...LOC 2227Z 276DEG 36KT 4166 7121 4132 7176

$$

KJC
020 
WWUS51 KBOX 092236
SVSBOX

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

MAC005-RIC001-003-005-009-092246-
/O.EXP.KBOX.SV.W.0047.000000T0000Z-110609T2245Z/
NEWPORT RI-BRISTOL RI-WASHINGTON RI-KENT RI-BRISTOL MA-
636 PM EDT THU JUN 9 2011

...THE SEVERE THUNDERSTORM WARNING FOR CENTRAL BRISTOL COUNTY IN
SOUTHEAST MASSACHUSETTS...AND EXTREME EAST CENTRAL KENT...
WASHINGTON...BRISTOL AND NORTHWESTERN NEWPORT COUNTIES IN RHODE
ISLAND WILL EXPIRE AT 645 PM EDT...

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 4170 7135 4167 7137 4166 7131 4170 7130
      4172 7134 4175 7135 4177 7098 4155 7132
      4157 7130 4159 7134 4157 7135 4151 7135
      4148 7141 4137 7155 4130 7189
TIME...MOT...LOC 2236Z 276DEG 36KT 4165 7109 4131 7164

$$

KJC

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, 10:21 PM EDTSevere Thunderstorm WarningBOXProvidence24 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, 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
Jun 8, 9:23 PM EDTSpecial Weather StatementBOX22 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 Rhode Island, 2011Severe 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.