Alert archive / Massachusetts / Tornado Warnings in 2011

Tornado Warning 7, NWS Boston/Norton, MA

June 1, 2011Middlesex County, Norfolk County, Worcester County, Massachusetts; Northeastern Connecticut Planning Region, Connecticut; Providence County, Rhode Island

NWS Boston/Norton, MA issued this tornado warning at Jun 1, 2011, 5:46 PM EDT for Middlesex County, Norfolk County, Worcester County, Massachusetts; Northeastern Connecticut Planning Region, Connecticut; Providence County, Rhode Island. It was in force for 44 min. 3 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
Jun 1, 2011, 5:46 PM EDT (21:46 UTC)
Expired
Jun 1, 2011, 6:30 PM EDT
In force
44 min
Issued by
NWS Boston/Norton, MA
Area
Storm-based polygon

Counties Northeastern Connecticut Planning Region, CT, Middlesex County, MA, Norfolk County, MA, Worcester County, MA, Providence County, RI

The radar

The Boston radar (KBOX), 28 km from the middle of the area, began a volume at 21:46 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 1, 5:58 PM EDTHAIL 2Millbury, MAGENERAL PUBLIC
Jun 1, 6:02 PM EDTTSTM WND DMGWorcester, MALARGE BRANCHES DOWN ON COLUMBUS STREET.
Jun 1, 6:09 PM EDTHAIL 1Medway, MAHAM RADIO

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 1, 12:58 PM EDTTornado WatchSPC7 hr

The nearest sounding before it

Chatham, MA (KCHH), launched 12:00Z, 9.8 hours before the alert went out and 121 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 2011-06-01Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Chatham, MA at 12:00Z on 2011-06-01The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 36 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
1250 m above ground
0-6 km bulk shear
15 kt
0-1 km storm-relative helicity
36 m²/s²
0-3 km storm-relative helicity
141 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.

564 
WFUS51 KBOX 012146
TORBOX
CTC015-MAC017-021-027-RIC007-012230-
/O.NEW.KBOX.TO.W.0007.110601T2146Z-110601T2230Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE TAUNTON MA
546 PM EDT WED JUN 1 2011

THE NATIONAL WEATHER SERVICE IN TAUNTON HAS ISSUED A

* TORNADO WARNING FOR...
  EXTREME NORTHEASTERN PROVIDENCE COUNTY IN RHODE ISLAND...
  SOUTHEASTERN WORCESTER COUNTY IN CENTRAL MASSACHUSETTS...
  THIS INCLUDES THE CITIES OF...WORCESTER...MILFORD...
  NORFOLK COUNTY IN EASTERN MASSACHUSETTS...
  THIS INCLUDES THE CITY OF FRANKLIN...
  EXTREME NORTHEASTERN WINDHAM COUNTY IN NORTHERN CONNECTICUT...
  SOUTH CENTRAL MIDDLESEX COUNTY IN SOUTHEAST MASSACHUSETTS...

* UNTIL 630 PM EDT

* AT 541 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING
  A TORNADO NEAR MILLBURY...OR 11 MILES SOUTH OF WORCESTER...MOVING
  EAST AT 35 MPH.

* SOME LOCATIONS IN THE WARNING INCLUDE...GRAFTON...WHITINSVILLE...
  NORTHBRIDGE...UXBRIDGE...UPTON...WESTBOROUGH...MILLVILLE...
  MENDON...HOPEDALE...BLACKSTONE...HOPKINTON...BELLINGHAM...
  ASHLAND...HOLLISTON...MEDWAY...SHERBORN...MILLIS...WRENTHAM...
  NORFOLK...MEDFIELD...DOVER...FOXBOROUGH...WALPOLE...NEEDHAM...
  WESTWOOD...NORWOOD...SHARON...DEDHAM...STOUGHTON...RANDOLPH...
  MILTON...HOLBROOK...CANTON AND AVON.

WHEN A TORNADO WARNING IS ISSUED BASED ON DOPPLER RADAR...IT MEANS A
TORNADO MAY ALREADY BE ON THE GROUND OR IS EXPECTED TO DEVELOP
SHORTLY. TAKE COVER NOW! MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR
OF A STURDY BUILDING. AVOID WINDOWS. IF IN A MOBILE HOME...A VEHICLE
OR OUTDOORS...MOVE TO THE CLOSEST SUBSTANTIAL SHELTER AND PROTECT
YOURSELF FROM FLYING DEBRIS.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 800 PM EDT WEDNESDAY EVENING
FOR NORTHERN CONNECTICUT AND MASSACHUSETTS AND SOUTHERN NEW HAMPSHIRE
AND CENTRAL RHODE ISLAND.

&&

LAT...LON 4213 7100 4201 7131 4202 7187 4227 7190
      4228 7119 4225 7114 4223 7113 4225 7111
      4226 7111 4228 7101
TIME...MOT...LOC 2146Z 265DEG 32KT 4211 7169

$$

BELK
2 follow-up statements
590 
WWUS51 KBOX 012209
SVSBOX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TAUNTON MA
609 PM EDT WED JUN 1 2011

CTC015-RIC007-012218-
/O.CAN.KBOX.TO.W.0007.000000T0000Z-110601T2230Z/
WINDHAM CT-PROVIDENCE RI-
609 PM EDT WED JUN 1 2011

...THE TORNADO WARNING FOR EXTREME NORTHEASTERN PROVIDENCE AND
EXTREME NORTHEASTERN WINDHAM COUNTIES IS CANCELLED...

A TORNADO WATCH REMAINS IN EFFECT UNTIL 800 PM EDT WEDNESDAY EVENING
FOR NORTHERN CONNECTICUT AND MASSACHUSETTS AND SOUTHERN NEW HAMPSHIRE
AND CENTRAL RHODE ISLAND.

LAT...LON 4203 7130 4206 7154 4223 7152 4224 7121
      4225 7114 4223 7113 4225 7110 4228 7103
      4228 7101 4213 7100
TIME...MOT...LOC 2208Z 265DEG 32KT 4213 7143

$$

MAC017-021-027-012230-
/O.CON.KBOX.TO.W.0007.000000T0000Z-110601T2230Z/
MIDDLESEX MA-WORCESTER MA-NORFOLK MA-
609 PM EDT WED JUN 1 2011

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 630 PM EDT FOR
NORFOLK...EXTREME SOUTHEASTERN WORCESTER AND EXTREME SOUTH CENTRAL
MIDDLESEX COUNTIES...

AT 604 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR AND STORM 
SPOTTERS WERE TRACKING AN EXTREMELY DANGEROUS TORNADO.  THIS TORNADO 
WAS LOCATED NEAR BELLINGHAM...OR NEAR MILFORD...MOVING EAST AT 
35 MPH.

OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
MEDWAY...FRANKLIN...MILLIS...WRENTHAM...NORFOLK...MEDFIELD...
FOXBOROUGH...WALPOLE...WESTWOOD...NORWOOD...SHARON...STOUGHTON...
RANDOLPH...QUINCY...MILTON...HOLBROOK AND CANTON

PRECAUTIONARY/PREPAREDNESS ACTIONS...

IN ADDITION TO THE TORNADO...THIS STORM IS CAPABLE OF PRODUCING
QUARTER SIZE HAIL AND DESTRUCTIVE STRAIGHT LINE WINDS.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 800 PM EDT WEDNESDAY EVENING
FOR NORTHERN CONNECTICUT AND MASSACHUSETTS AND SOUTHERN NEW HAMPSHIRE
AND CENTRAL RHODE ISLAND.

&&

LAT...LON 4203 7130 4206 7154 4223 7152 4224 7121
      4225 7114 4223 7113 4225 7110 4228 7103
      4228 7101 4213 7100
TIME...MOT...LOC 2208Z 265DEG 32KT 4213 7143

$$

BELK
672 
WWUS51 KBOX 012229
SVSBOX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TAUNTON MA
629 PM EDT WED JUN 1 2011

MAC017-021-027-012240-
/O.EXP.KBOX.TO.W.0007.000000T0000Z-110601T2230Z/
MIDDLESEX MA-WORCESTER MA-NORFOLK MA-
629 PM EDT WED JUN 1 2011

...THE TORNADO WARNING FOR NORFOLK...EXTREME SOUTHEASTERN WORCESTER
AND SOUTH CENTRAL MIDDLESEX COUNTIES HAS EXPIRED...

A TORNADO WATCH REMAINS IN EFFECT UNTIL 800 PM EDT WEDNESDAY EVENING
FOR NORTHERN CONNECTICUT AND MASSACHUSETTS AND SOUTHERN NEW HAMPSHIRE
AND CENTRAL RHODE ISLAND.

LAT...LON 4203 7130 4206 7154 4223 7152 4224 7121
      4225 7114 4223 7113 4225 7110 4228 7103
      4228 7101 4213 7100
TIME...MOT...LOC 2230Z 265DEG 32KT 4215 7117

$$

DOODY

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 1, 8:25 AM EDTSpecial Weather StatementBOXMiddlesex50 min
Jun 1, 8:32 AM EDTSevere Thunderstorm WarningBOXEssex, Middlesex43 min
Jun 1, 8:48 AM EDTSpecial Weather StatementBOXSuffolk42 min
Jun 1, 8:50 AM EDTSpecial Marine WarningBOX71 min
Jun 1, 8:55 AM EDTSpecial Weather StatementBOXBristol50 min
Jun 1, 9:12 AM EDTSpecial Weather StatementBOXPlymouth48 min
Jun 1, 9:40 AM EDTSpecial Marine WarningBOX50 min
Jun 1, 9:41 AM EDTSpecial Marine WarningBOX64 min
Jun 1, 10:00 AM EDTSpecial Marine WarningBOX39 min
Jun 1, 10:22 AM EDTSpecial Weather StatementBOXBarnstable38 min
Jun 1, 10:36 AM EDTSpecial Marine WarningBOX54 min
Jun 1, 2:37 PM EDTSevere Thunderstorm WarningBOXFranklin, Hampshire53 min
Jun 1, 2:58 PM EDTSpecial Weather StatementBOXHampshire62 min
Jun 1, 3:09 PM EDTSevere Thunderstorm WarningBOXFranklin, Hampden, Hampshire, Worcester51 min
Jun 1, 3:28 PM EDTTornado WarningBOXFranklin, Hampden, Hampshire32 min
Jun 1, 3:32 PM EDTSevere Thunderstorm WarningBOXFranklin, Middlesex, Worcester40 min
Jun 1, 3:56 PM EDTAreal Flood AdvisoryBOXFranklin, Hampden, Hampshire3 hr
Jun 1, 4:05 PM EDTTornado WarningBOXFranklin, Hampden, Hampshire, Worcester40 min
Jun 1, 4:15 PM EDTAreal Flood AdvisoryBOXFranklin, Hampden, Hampshire, Worcester3 hr
Jun 1, 4:18 PM EDTSevere Thunderstorm WarningBOXHampden, Hampshire, Worcester42 min
Jun 1, 4:30 PM EDTTornado WarningBOXHampden, Hampshire, Worcester45 min
Jun 1, 4:44 PM EDTSevere Thunderstorm WarningBOXFranklin, Hampden, Hampshire, Middlesex, Norfolk, Worcester61 min
Jun 1, 4:51 PM EDTAreal Flood AdvisoryBOXFranklin, Hampshire, Worcester3 hr
Jun 1, 5:01 PM EDTTornado WarningBOXFranklin, Hampden, Hampshire, Middlesex, Norfolk, Worcester44 min
Jun 1, 5:06 PM EDTAreal Flood AdvisoryBOXHampden, Worcester3 hr
Jun 1, 5:17 PM EDTFlash Flood WarningBOXMiddlesex, Worcester3 hr
Jun 1, 5:17 PM EDTTornado WarningBOXHampden, Norfolk, Worcester29 min
Jun 1, 5:38 PM EDTSevere Thunderstorm WarningBOXBristol, Norfolk, Worcester67 min
Jun 1, 5:49 PM EDTFlash Flood WarningBOXBristol, Middlesex, Norfolk, Worcester3 hr
Jun 1, 5:54 PM EDTSevere Thunderstorm WarningBOXFranklin, Worcester52 min
Jun 1, 5:57 PM EDTSevere Thunderstorm WarningBOXFranklin, Hampden, Hampshire, Worcester26 min
Jun 1, 6:00 PM EDTSevere Thunderstorm WarningBOXWorcester45 min
Jun 1, 6:07 PM EDTTornado WarningBOXHampden, Hampshire, Worcester53 min
Jun 1, 6:20 PM EDTSpecial Marine WarningBOX28 min
Jun 1, 6:29 PM EDTAreal Flood AdvisoryBOXBristol, Norfolk, Plymouth, Suffolk2 hr
Jun 1, 6:31 PM EDTSpecial Weather StatementBOXNorfolk59 min
Jun 1, 6:44 PM EDTSpecial Weather StatementBOXBristol, Plymouth61 min
Jun 1, 6:44 PM EDTSevere Thunderstorm WarningBOXFranklin, Middlesex, Worcester30 min
Jun 1, 6:57 PM EDTTornado WarningBOXHampden, Worcester63 min
Jun 1, 7:12 PM EDTTornado WarningBOXFranklin, Middlesex, Worcester48 min
Jun 1, 7:14 PM EDTSpecial Marine WarningBOX91 min
Jun 1, 7:15 PM EDTAreal Flood AdvisoryBOXFranklin, Middlesex, Worcester104 min
Jun 1, 7:55 PM EDTSpecial Weather StatementBOXBristol35 min
Jun 1, 7:56 PM EDTSpecial Weather StatementBOXHampden34 min
Jun 1, 7:57 PM EDTSevere Thunderstorm WarningBOXBristol, Middlesex, Norfolk, Plymouth, Suffolk, Worcester24 min
Jun 1, 7:59 PM EDTAreal Flood AdvisoryBOXHampden, Hampshire, Worcester66 min
Jun 1, 5:25 PM EDTSpecial Weather StatementBOX50 min

Nearby

Tornado Warnings in Massachusetts, 2011Tornado Warnings in Connecticut, 2011Tornado Warnings in Rhode Island, 2011Every tornado warning in 2011Tornadoes 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.