Alert archive / Massachusetts / Severe Thunderstorm Warnings in 2011

Severe Thunderstorm Warning 17, NWS Boston/Norton, MA

June 1, 20114 counties in Massachusetts

NWS Boston/Norton, MA issued this severe thunderstorm warning at Jun 1, 2011, 5:57 PM EDT for 4 counties in Massachusetts. It was in force for 26 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: Jun 1, 2011, 5:57 PM EDT (21:57 UTC)
Expired: Jun 1, 2011, 6:23 PM EDT
In force: 26 min
Issued by: NWS Boston/Norton, MA
Area: Storm-based polygon

Counties Franklin County, MA, Hampden County, MA, Hampshire County, MA, Worcester County, MA

The radar

The Boston radar (KBOX), 106 km from the middle of the area, began a volume at 21:59 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

Time	Report	Where	Remark
Jun 1, 6:07 PM EDT	TORNADO	Westfield, MA	ELECTRIC COMPANY REPORTED TO POLICE A TORNADO ON THE GROUND IN SOUTHWEST PORTION OF WESTIFIELD.
Jun 1, 6:15 PM EDT	HAIL 1	Chicopee, MA	HAM RADIO
Jun 1, 6:20 PM EDT	TORNADO	Springfield, MA	STATE POLICE REPORT TORNADO IN NORTH SPRINGFIELD AREA.
Jun 1, 6:30 PM EDT	TSTM WND DMG	Belchertown, MA	TREES DOWN WITHIN THE TOWN.
Jun 1, 6:30 PM EDT	HAIL 0.75	Chicopee, MA
Jun 1, 6:32 PM EDT	TORNADO	Wilbraham, MA	A TORNADO TOUCHED DOWN IN THE TOWN OF WILBRAHAM FROM 632 PM UNTIL 640 PM. THE TORNADO WAS RATED AS AN EF1 WITH MAXIMUM WINDS OF 90 MPH. THE PATH LENGTH WAS 3.6 MILES AND THE MAXIMUM WIDTH WAS 200 YARDS. THERE WERE ZERO FATALITIES OR INJURIES.

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.

Issued	Product	Office	Lasted
Jun 1, 12:58 PM EDT	Tornado Watch	SPC	7 hr

The nearest sounding before it

Albany, NY (KALY), launched 12:00Z, 10.0 hours before the alert went out and 130 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 2410 J/kg
Mixed-layer CIN: -130 J/kg
Mixed-layer LCL: 836 m above ground
0-6 km bulk shear: 34 kt
0-1 km storm-relative helicity: 159 m²/s²
0-3 km storm-relative helicity: 189 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 3.5

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

705 
WUUS51 KBOX 012157
SVRBOX
MAC011-013-015-027-012300-
/O.NEW.KBOX.SV.W.0017.110601T2157Z-110601T2300Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TAUNTON MA
557 PM EDT WED JUN 1 2011

THE NATIONAL WEATHER SERVICE IN TAUNTON HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  WEST CENTRAL WORCESTER COUNTY IN CENTRAL MASSACHUSETTS...
  EXTREME SOUTHEASTERN FRANKLIN COUNTY IN WESTERN MASSACHUSETTS...
  EASTERN HAMPDEN COUNTY IN WESTERN MASSACHUSETTS...
  THIS INCLUDES THE CITIES OF...SPRINGFIELD...CHICOPEE...
  SOUTHEASTERN HAMPSHIRE COUNTY IN WESTERN MASSACHUSETTS...

* UNTIL 700 PM EDT

* AT 555 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND
  DAMAGING WINDS IN EXCESS OF 60 MPH.  THIS STORM WAS LOCATED NEAR
  WEST SPRINGFIELD...OR 6 MILES WEST OF CHICOPEE...AND WAS MOVING
  NORTHEAST AT 30 MPH.

* SOME LOCATIONS IN THE WARNING INCLUDE...LONGMEADOW...EASTHAMPTON...
  HOLYOKE...EAST LONGMEADOW...SOUTH HADLEY...LUDLOW...HAMPDEN...
  GRANBY...WILBRAHAM...BELCHERTOWN...PALMER...WARE...WARREN...WEST
  BROOKFIELD...HARDWICK...BROOKFIELD...NEW BRAINTREE...OAKHAM...NORTH
  BROOKFIELD...EAST BROOKFIELD AND BARRE.

A TORNADO WATCH IS ALSO IN EFFECT. SEVERE THUNDERSTORMS CAN PRODUCE
TORNADOES WITH LITTLE OR NO ADVANCED WARNING. REMAIN CALM...BUT TAKE
COVER NOW. GO TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A STURDY
BUILDING. AVOID WINDOWS.

&&

LAT...LON 4252 7208 4227 7193 4204 7243 4204 7273
      4221 7284
TIME...MOT...LOC 2157Z 245DEG 24KT 4217 7267

$$

BELK

1 follow-up statement

989 
WWUS51 KBOX 012223
SVSBOX

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

MAC011-013-015-027-012233-
/O.CAN.KBOX.SV.W.0017.000000T0000Z-110601T2300Z/
WORCESTER MA-FRANKLIN MA-HAMPSHIRE MA-HAMPDEN MA-
623 PM EDT WED JUN 1 2011

...THE SEVERE THUNDERSTORM WARNING FOR HAMPDEN...SOUTHEASTERN
HAMPSHIRE...EXTREME SOUTHEASTERN FRANKLIN AND WEST CENTRAL WORCESTER
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 4252 7208 4227 7193 4204 7243 4204 7273
      4221 7284
TIME...MOT...LOC 2223Z 245DEG 24KT 4224 7246

$$

BELK

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 1, 8:25 AM EDT	Special Weather Statement	BOX	Middlesex	50 min
Jun 1, 8:32 AM EDT	Severe Thunderstorm Warning	BOX	Essex, Middlesex	43 min
Jun 1, 8:48 AM EDT	Special Weather Statement	BOX	Suffolk	42 min
Jun 1, 8:50 AM EDT	Special Marine Warning	BOX		71 min
Jun 1, 8:55 AM EDT	Special Weather Statement	BOX	Bristol	50 min
Jun 1, 9:12 AM EDT	Special Weather Statement	BOX	Plymouth	48 min
Jun 1, 9:40 AM EDT	Special Marine Warning	BOX		50 min
Jun 1, 9:41 AM EDT	Special Marine Warning	BOX		64 min
Jun 1, 10:00 AM EDT	Special Marine Warning	BOX		39 min
Jun 1, 10:22 AM EDT	Special Weather Statement	BOX	Barnstable	38 min
Jun 1, 10:36 AM EDT	Special Marine Warning	BOX		54 min
Jun 1, 2:37 PM EDT	Severe Thunderstorm Warning	BOX	Franklin, Hampshire	53 min
Jun 1, 2:58 PM EDT	Special Weather Statement	BOX	Hampshire	62 min
Jun 1, 3:09 PM EDT	Severe Thunderstorm Warning	BOX	Franklin, Hampden, Hampshire, Worcester	51 min
Jun 1, 3:28 PM EDT	Tornado Warning	BOX	Franklin, Hampden, Hampshire	32 min
Jun 1, 3:32 PM EDT	Severe Thunderstorm Warning	BOX	Franklin, Middlesex, Worcester	40 min
Jun 1, 3:56 PM EDT	Areal Flood Advisory	BOX	Franklin, Hampden, Hampshire	3 hr
Jun 1, 4:05 PM EDT	Tornado Warning	BOX	Franklin, Hampden, Hampshire, Worcester	40 min
Jun 1, 4:15 PM EDT	Areal Flood Advisory	BOX	Franklin, Hampden, Hampshire, Worcester	3 hr
Jun 1, 4:18 PM EDT	Severe Thunderstorm Warning	BOX	Hampden, Hampshire, Worcester	42 min
Jun 1, 4:30 PM EDT	Tornado Warning	BOX	Hampden, Hampshire, Worcester	45 min
Jun 1, 4:44 PM EDT	Severe Thunderstorm Warning	BOX	Franklin, Hampden, Hampshire, Middlesex, Norfolk, Worcester	61 min
Jun 1, 4:51 PM EDT	Areal Flood Advisory	BOX	Franklin, Hampshire, Worcester	3 hr
Jun 1, 5:01 PM EDT	Tornado Warning	BOX	Franklin, Hampden, Hampshire, Middlesex, Norfolk, Worcester	44 min
Jun 1, 5:06 PM EDT	Areal Flood Advisory	BOX	Hampden, Worcester	3 hr
Jun 1, 5:17 PM EDT	Flash Flood Warning	BOX	Middlesex, Worcester	3 hr
Jun 1, 5:17 PM EDT	Tornado Warning	BOX	Hampden, Norfolk, Worcester	29 min
Jun 1, 5:38 PM EDT	Severe Thunderstorm Warning	BOX	Bristol, Norfolk, Worcester	67 min
Jun 1, 5:46 PM EDT	Tornado Warning	BOX	Middlesex, Norfolk, Worcester	44 min
Jun 1, 5:49 PM EDT	Flash Flood Warning	BOX	Bristol, Middlesex, Norfolk, Worcester	3 hr
Jun 1, 5:54 PM EDT	Severe Thunderstorm Warning	BOX	Franklin, Worcester	52 min
Jun 1, 6:00 PM EDT	Severe Thunderstorm Warning	BOX	Worcester	45 min
Jun 1, 6:07 PM EDT	Tornado Warning	BOX	Hampden, Hampshire, Worcester	53 min
Jun 1, 6:20 PM EDT	Special Marine Warning	BOX		28 min
Jun 1, 6:29 PM EDT	Areal Flood Advisory	BOX	Bristol, Norfolk, Plymouth, Suffolk	2 hr
Jun 1, 6:31 PM EDT	Special Weather Statement	BOX	Norfolk	59 min
Jun 1, 6:44 PM EDT	Special Weather Statement	BOX	Bristol, Plymouth	61 min
Jun 1, 6:44 PM EDT	Severe Thunderstorm Warning	BOX	Franklin, Middlesex, Worcester	30 min
Jun 1, 6:57 PM EDT	Tornado Warning	BOX	Hampden, Worcester	63 min
Jun 1, 7:12 PM EDT	Tornado Warning	BOX	Franklin, Middlesex, Worcester	48 min
Jun 1, 7:14 PM EDT	Special Marine Warning	BOX		91 min
Jun 1, 7:15 PM EDT	Areal Flood Advisory	BOX	Franklin, Middlesex, Worcester	104 min
Jun 1, 7:55 PM EDT	Special Weather Statement	BOX	Bristol	35 min
Jun 1, 7:56 PM EDT	Special Weather Statement	BOX	Hampden	34 min
Jun 1, 7:57 PM EDT	Severe Thunderstorm Warning	BOX	Bristol, Middlesex, Norfolk, Plymouth, Suffolk, Worcester	24 min
Jun 1, 7:59 PM EDT	Areal Flood Advisory	BOX	Hampden, Hampshire, Worcester	66 min

Nearby

Severe Thunderstorm Warnings in Massachusetts, 2011 Every 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.