Alert archive / Massachusetts / Severe Thunderstorm Warnings in 2011

Severe Thunderstorm Warning 9, NWS Boston/Norton, MA

June 1, 2011Franklin County, Hampshire County, Massachusetts

NWS Boston/Norton, MA issued this severe thunderstorm warning at Jun 1, 2011, 2:37 PM EDT for Franklin County, Hampshire County, Massachusetts. 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 1, 2011, 2:37 PM EDT (18:37 UTC)
Expired: Jun 1, 2011, 3:30 PM EDT
In force: 53 min
Issued by: NWS Boston/Norton, MA
Area: Storm-based polygon

Counties Franklin County, MA, Hampshire County, MA

The radar

The Albany radar (KENX), 95 km from the middle of the area, began a volume at 18:39 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, 3:23 PM EDT	TSTM WND DMG	Deerfield, MA	TREES DOWN ON ROUTE 116 AND HILLSIDE ROAD

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, 6.6 hours before the alert went out and 76 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.

151 
WUUS51 KBOX 011837
SVRBOX
MAC011-015-011930-
/O.NEW.KBOX.SV.W.0009.110601T1837Z-110601T1930Z/

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

THE NATIONAL WEATHER SERVICE IN TAUNTON HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  WESTERN FRANKLIN COUNTY IN WESTERN MASSACHUSETTS...
  THIS INCLUDES THE CITY OF GREENFIELD...
  EXTREME NORTHWESTERN HAMPSHIRE COUNTY IN WESTERN MASSACHUSETTS...

* UNTIL 330 PM EDT

* AT 236 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 16
  MILES SOUTHWEST OF MONROE...OR 8 MILES SOUTHWEST OF NORTH ADAMS...
  AND WAS MOVING EAST AT 25 MPH.

* SOME LOCATIONS IN THE WARNING INCLUDE...PLAINFIELD...HAWLEY...
  ROWE...CHARLEMONT...HEATH...SHELBURNE...LEYDEN...DEERFIELD...
  CONWAY...COLRAIN...BUCKLAND AND ASHFIELD.

DOPPLER RADAR INDICATED WEAK ROTATION WITHIN THIS STORM. WHILE NOT
IMMEDIATELY LIKELY...A TORNADO MAY DEVELOP. REMAIN CALM...BUT TAKE
COVER NOW. GO TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A STURDY
BUILDING. AVOID WINDOWS.

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 4275 7299 4274 7261 4270 7259 4252 7255
      4248 7299 4254 7297 4255 7299 4266 7296
      4266 7299 4268 7299 4270 7296 4270 7302
      4274 7303
TIME...MOT...LOC 1837Z 259DEG 20KT 4260 7322

$$

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, 2:58 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, 7:12 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.