Alert archive / Rhode Island / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 38, NWS Boston/Norton, MA

July 1, 2012Bristol County, Worcester County, Massachusetts; 4 counties in Rhode Island; Northeastern Connecticut Planning Region, Connecticut

NWS Boston/Norton, MA issued this severe thunderstorm warning at Jul 1, 2012, 3:44 PM EDT for Bristol County, Worcester County, Massachusetts; 4 counties in Rhode Island; Northeastern Connecticut Planning Region, Connecticut. It was in force for 46 min. 6 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
Jul 1, 2012, 3:44 PM EDT (19:44 UTC)
Expired
Jul 1, 2012, 4:30 PM EDT
In force
46 min
Issued by
NWS Boston/Norton, MA
Area
Storm-based polygon

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

The radar

The Boston radar (KBOX), 32 km from the middle of the area, began a volume at 19:44 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
Jul 1, 3:50 PM EDTTSTM WND DMGScituate, RITREE DOWN ON WIRES ON ROCKLAND ROAD
Jul 1, 3:51 PM EDTHAIL 1Scituate, RIHARTFORD AVENUE
Jul 1, 4:09 PM EDTHAIL 0.75Burrillville, RI
Jul 1, 4:09 PM EDTHAIL 0.75Johnston, RI
Jul 1, 4:10 PM EDTTSTM WND DMGFoster, RITREES DOWN
Jul 1, 4:15 PM EDTTSTM WND DMGSmithfield, RIWIRES DOWN

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
Jul 1, 1:35 PM EDTSevere Thunderstorm WatchSPC6 hr

The nearest sounding before it

Chatham, MA (KCHH), launched 12:00Z, 7.7 hours before the alert went out and 115 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 2012-07-01Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 121 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 2012-07-01The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -17 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
121 J/kg
Mixed-layer CIN
-78 J/kg
Mixed-layer LCL
1755 m above ground
0-6 km bulk shear
30 kt
0-1 km storm-relative helicity
-17 m²/s²
0-3 km storm-relative helicity
68 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.

534 
WUUS51 KBOX 011944
SVRBOX
CTC015-MAC005-027-RIC001-003-005-007-012030-
/O.NEW.KBOX.SV.W.0038.120701T1944Z-120701T2030Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TAUNTON MA
ISSUED BY NATIONAL WEATHER SERVICE NEW YORK NY
344 PM EDT SUN JUL 1 2012

THE NATIONAL WEATHER SERVICE IN TAUNTON HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHERN WORCESTER COUNTY IN CENTRAL MASSACHUSETTS...
  NORTHEASTERN KENT COUNTY IN RHODE ISLAND...
  PROVIDENCE COUNTY IN RHODE ISLAND...
  NORTHERN BRISTOL COUNTY IN SOUTHEAST MASSACHUSETTS...
  NORTHERN NEWPORT COUNTY IN RHODE ISLAND...
  BRISTOL COUNTY IN RHODE ISLAND...
  EASTERN WINDHAM COUNTY IN NORTHERN CONNECTICUT...

* UNTIL 430 PM EDT...

* AT 340 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING GOLF BALL SIZE HAIL...AND
  DAMAGING WINDS IN EXCESS OF 60 MPH.  THIS STORM WAS LOCATED NEAR
  SMITHFIELD...OR 9 MILES WEST OF PROVIDENCE...AND MOVING EAST AT 30
  MPH.

* OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
  LINCOLN...NORTH PROVIDENCE...JOHNSTON...CRANSTON...CENTRAL FALLS...
  PAWTUCKET...WARWICK...EAST PROVIDENCE...ATTLEBOROUGH...SEEKONK...
  BARRINGTON...REHOBOTH...WARREN...BRISTOL...SWANSEA...TAUNTON...
  SOMERSET...FREETOWN...DIGHTON...BERKLEY AND TIVERTON

PRECAUTIONARY/PREPAREDNESS ACTIONS...

IN ADDITION TO LARGE HAIL AND DAMAGING WINDS...CONTINUOUS CLOUD TO
GROUND LIGHTNING IS OCCURRING WITH THIS STORM. MOVE INDOORS
IMMEDIATELY! LIGHTNING IS ONE OF NATURES NUMBER ONE KILLERS.
REMEMBER...IF YOU CAN HEAR THUNDER...YOU ARE CLOSE ENOUGH TO BE
STRUCK BY LIGHTNING.

&&

LAT...LON 4161 7119 4164 7127 4166 7128 4165 7130
      4165 7131 4167 7132 4170 7130 4172 7135
      4178 7138 4173 7138 4171 7136 4169 7136
      4167 7137 4183 7183 4201 7175 4191 7099
TIME...MOT...LOC 1944Z 288DEG 24KT 4185 7155

$$

JM
1 follow-up statement
938 
WWUS51 KBOX 012020
SVSBOX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TAUNTON MA
420 PM EDT SUN JUL 1 2012

CTC015-MAC027-012040-
/O.CAN.KBOX.SV.W.0038.000000T0000Z-120701T2030Z/
WINDHAM CT-
420 PM EDT SUN JUL 1 2012

...THE SEVERE THUNDERSTORM WARNING FOR EXTREME EAST CENTRAL
WINDHAM COUNTY IS CANCELLED...

THE SEVERE THUNDERSTORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF 
THE WARNED AREA. THEREFORE THE WARNING HAS BEEN CANCELLED.

LAT...LON 4163 7125 4163 7121 4172 7116 4173 7122
      4170 7124 4172 7126 4164 7126 4168 7128
      4165 7130 4165 7130 4172 7129 4171 7130
      4179 7137 4169 7136 4167 7137 4178 7167
      4198 7154 4191 7099 4161 7119
TIME...MOT...LOC 2019Z 288DEG 24KT 4178 7125 

$$

MAC005-RIC001-003-005-007-012030-
/O.CON.KBOX.SV.W.0038.000000T0000Z-120701T2030Z/
BRISTOL MA-KENT RI-BRISTOL RI-NEWPORT RI-PROVIDENCE RI-
420 PM EDT SUN JUL 1 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 430 PM
EDT FOR NORTHWESTERN BRISTOL...NORTHEASTERN KENT...BRISTOL...
EXTREME NORTHEASTERN NEWPORT AND SOUTHEASTERN PROVIDENCE COUNTIES...

AT 419 PM EDT...DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM
CAPABLE OF PRODUCING QUARTER SIZE HAIL AND DAMAGING WINDS IN
EXCESS OF 60 MPH. THIS STORM WAS LOCATED 4 MILES NORTHEAST OF 
BARRINGTON...MOVING EAST AT 30 MPH.

LOCATIONS IMPACTED INCLUDE...
PROVIDENCE...WARWICK...TAUNTON...ATTLEBOROUGH...BRISTOL...
BARRINGTON...CRANSTON...PAWTUCKET...BERKLEY...SEEKONK...EAST
PROVIDENCE...NORTH SMITHFIELD...JOHNSTON...NORTH PROVIDENCE...
WARREN...CENTRAL FALLS...DIGHTON...SOMERSET...SWANSEA AND
SCITUATE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

IN ADDITION TO LARGE HAIL AND DAMAGING WINDS...CONTINUOUS CLOUD TO
GROUND LIGHTNING IS OCCURRING WITH THIS STORM.  MOVE INDOORS
IMMEDIATELY! LIGHTNING IS ONE OF NATURES LEADING KILLERS. REMEMBER...
IF YOU CAN HEAR THUNDER...YOU ARE CLOSE ENOUGH TO BE STRUCK BY
LIGHTNING.

&&

LAT...LON 4163 7125 4163 7121 4172 7116 4173 7122
      4170 7124 4172 7126 4164 7126 4168 7128
      4165 7130 4165 7130 4172 7129 4171 7130
      4179 7137 4169 7136 4167 7137 4178 7167
      4198 7154 4191 7099 4161 7119
TIME...MOT...LOC 2019Z 288DEG 24KT 4178 7125 

$$

EVT

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 1, 3:04 PM EDTSevere Thunderstorm WarningBOXNorfolk, Worcester41 min
Jul 1, 3:06 PM EDTSevere Thunderstorm WarningBOXHampden, Hampshire39 min
Jul 1, 3:40 PM EDTSevere Thunderstorm WarningBOXBarnstable, Plymouth50 min
Jul 1, 3:42 PM EDTSpecial Marine WarningBOX48 min
Jul 1, 3:48 PM EDTSpecial Marine WarningBOX27 min
Jul 1, 4:34 PM EDTSevere Thunderstorm WarningBOXBristol41 min
Jul 1, 4:56 PM EDTSpecial Marine WarningBOX34 min
Jul 1, 5:02 PM EDTSpecial Marine WarningBOX43 min
Jul 1, 5:33 PM EDTSpecial Marine WarningBOX27 min
Jul 1, 5:43 PM EDTSpecial Weather StatementBOXDukes47 min
Jul 1, 5:52 PM EDTSpecial Marine WarningBOX38 min
Jul 1, 6:11 PM EDTSpecial Marine WarningBOX49 min
Jul 1, 6:56 PM EDTSpecial Marine WarningBOX49 min
Jul 1, 7:03 PM EDTSpecial Marine WarningBOX57 min
Jul 1, 3:38 PM EDTSevere Thunderstorm WarningBOXKent, Providence, Washington52 min
Jul 1, 4:10 PM EDTSevere Thunderstorm WarningBOXWashington35 min
Jul 1, 4:27 PM EDTSevere Thunderstorm WarningBOXKent, Washington24 min
Jul 1, 6:24 PM EDTSpecial Weather StatementBOXWashington36 min
Jul 1, 6:35 PM EDTSevere Thunderstorm WarningBOXWashington25 min
Jul 1, 2:51 PM EDTSevere Thunderstorm WarningBOXCapitol Planning Region, Northeastern Connecticut Planning Region38 min
Jul 1, 2:59 PM EDTSpecial Weather StatementBOX31 min

Nearby

Severe Thunderstorm Warnings in Rhode Island, 2012Severe Thunderstorm Warnings in Massachusetts, 2012Severe Thunderstorm Warnings in Connecticut, 2012Every severe thunderstorm warning in 2012

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.