Alert archive / Massachusetts / Tornado Warnings in 2011

Tornado Warning 10, NWS Boston/Norton, MA

June 1, 2011Franklin County, Middlesex County, Worcester County, Massachusetts; Cheshire County, Hillsborough County, New Hampshire

NWS Boston/Norton, MA issued this tornado warning at Jun 1, 2011, 7:12 PM EDT for Franklin County, Middlesex County, Worcester County, Massachusetts; Cheshire County, Hillsborough County, New Hampshire. It was in force for 48 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, 7:12 PM EDT (23:12 UTC)
Expired: Jun 1, 2011, 8:00 PM EDT
In force: 48 min
Issued by: NWS Boston/Norton, MA
Area: Storm-based polygon

Counties Franklin County, MA, Middlesex County, MA, Worcester County, MA, Cheshire County, NH, Hillsborough County, NH

The radar

The Boston radar (KBOX), 101 km from the middle of the area, began a volume at 23:13 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, 7:28 PM EDT	HAIL 0.75	Winchendon, MA	HAM RADIO
Jun 1, 7:40 PM EDT	HAIL 1.75	Gardner, MA
Jun 1, 7:40 PM EDT	HAIL 1.75	Gardner, MA	HAM RADIO
Jun 1, 7:57 PM EDT	HAIL 0.88	Winchendon, MA	HAM RADIO
Jun 1, 8:01 PM EDT	TSTM WND DMG	Leominster, MA	TREE DOWN ON HOUSE ON BELLEVIEW ROAD
Jun 1, 8:01 PM EDT	HAIL 0.75	Leominster, MA	HAM 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.

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, 11.2 hours before the alert went out and 153 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.

901 
WFUS51 KBOX 012312
TORBOX
MAC011-017-027-NHC005-011-020000-
/O.NEW.KBOX.TO.W.0010.110601T2312Z-110602T0000Z/

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

THE NATIONAL WEATHER SERVICE IN TAUNTON HAS ISSUED A

* TORNADO WARNING FOR...
  NORTHERN WORCESTER COUNTY IN CENTRAL MASSACHUSETTS...
  THIS INCLUDES THE CITIES OF...LEOMINSTER...FITCHBURG...
  NORTHWESTERN MIDDLESEX COUNTY IN SOUTHEAST MASSACHUSETTS...
  SOUTHEASTERN CHESHIRE COUNTY IN SOUTHERN NEW HAMPSHIRE...
  SOUTH CENTRAL HILLSBOROUGH COUNTY IN SOUTHERN NEW HAMPSHIRE...
  NORTHEASTERN FRANKLIN COUNTY IN WESTERN MASSACHUSETTS...

* UNTIL 800 PM EDT

* AT 708 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
  A CLUSTER OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING A TORNADO
  NEAR ROYALSTON AND WARWICK...OR 14 MILES SOUTHWEST OF JAFFREY...
  MOVING EAST AT 35 MPH.

* SOME LOCATIONS IN THE WARNING INCLUDE...PHILLIPSTON...WINCHENDON...
  TEMPLETON...GARDNER...ASHBURNHAM...WESTMINSTER...ASHBY...
  LUNENBURG...TOWNSEND...SHIRLEY AND PEPPERELL.

TORNADOES ARE DIFFICULT TO SEE AND CONFIRM AT NIGHT. TAKE COVER NOW!
MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A STURDY BUILDING.
AVOID WINDOWS. IF IN A VEHICLE...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 4269 7156 4245 7163 4256 7225 4263 7242
      4277 7234
TIME...MOT...LOC 2311Z 279DEG 30KT 4264 7216

$$

BELK

1 follow-up statement

803 
WWUS51 KBOX 012344
SVSBOX

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

MAC011-NHC005-011-012353-
/O.CAN.KBOX.TO.W.0010.000000T0000Z-110602T0000Z/
CHESHIRE NH-FRANKLIN MA-HILLSBOROUGH NH-
744 PM EDT WED JUN 1 2011

...THE TORNADO WARNING FOR SOUTH CENTRAL HILLSBOROUGH...NORTHEASTERN
FRANKLIN AND SOUTHEASTERN CHESHIRE COUNTIES IS CANCELLED...

A TORNADO WATCH REMAINS IN EFFECT UNTIL 1100 PM EDT WEDNESDAY 
EVENING FOR NORTHERN CONNECTICUT AND MASSACHUSETTS AND SOUTHERN NEW 
HAMPSHIRE AND CENTRAL RHODE ISLAND.

LAT...LON 4253 7205 4261 7211 4271 7206 4269 7156
      4245 7163
TIME...MOT...LOC 2343Z 279DEG 30KT 4260 7180

$$

MAC017-027-020000-
/O.CON.KBOX.TO.W.0010.000000T0000Z-110602T0000Z/
MIDDLESEX MA-WORCESTER MA-
744 PM EDT WED JUN 1 2011

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 800 PM EDT FOR NORTH
CENTRAL WORCESTER AND NORTHWESTERN MIDDLESEX COUNTIES...

AT 741 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO 
INDICATE A TORNADO.  THIS POSSIBLE TORNADO WAS LOCATED NEAR 
FITCHBURG...MOVING EAST AT 35 MPH.  TRAINED SPOTTERS REPORTED GOLF 
BALL SIZED HAIL AT 740 PM EDT.  TAKE COVER FROM THIS STORM NOW!

OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
LEOMINSTER...LUNENBURG...TOWNSEND...SHIRLEY AND PEPPERELL

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A TORNADO WATCH REMAINS IN EFFECT UNTIL 1100 PM EDT WEDNESDAY EVENING
FOR NORTHERN CONNECTICUT AND MASSACHUSETTS AND SOUTHERN NEW HAMPSHIRE
AND CENTRAL RHODE ISLAND.

&&

LAT...LON 4253 7205 4261 7211 4271 7206 4269 7156
      4245 7163
TIME...MOT...LOC 2343Z 279DEG 30KT 4260 7180

$$

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, 5:57 PM EDT	Severe Thunderstorm Warning	BOX	Franklin, Hampden, Hampshire, Worcester	26 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, 7:14 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
Jun 1, 2:29 PM EDT	Severe Thunderstorm Warning	BOX	Cheshire, Hillsborough	61 min
Jun 1, 2:52 PM EDT	Tornado Warning	BOX	Cheshire	23 min
Jun 1, 3:24 PM EDT	Severe Thunderstorm Warning	BOX	Cheshire, Hillsborough	51 min
Jun 1, 3:55 PM EDT	Special Weather Statement	BOX	Cheshire	35 min
Jun 1, 5:31 PM EDT	Special Weather Statement	BOX	Cheshire	59 min

Nearby

Tornado Warnings in Massachusetts, 2011 Tornado Warnings in New Hampshire, 2011 Every tornado warning in 2011 Tornadoes 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.