Alert archive / New Hampshire / Severe Thunderstorm Warnings in 2011

Severe Thunderstorm Warning 16, NWS Boston/Norton, MA

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

NWS Boston/Norton, MA issued this severe thunderstorm warning at Jun 1, 2011, 5:54 PM EDT for Cheshire County, Hillsborough County, New Hampshire; Franklin County, Worcester County, Massachusetts. It was in force for 52 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Jun 1, 2011, 5:54 PM EDT (21:54 UTC)
Expired: Jun 1, 2011, 6:46 PM EDT
In force: 52 min
Issued by: NWS Boston/Norton, MA
Area: Storm-based polygon

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

The radar

The Albany radar (KENX), 117 km from the middle of the area, began a volume at 21:56 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.

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, 9.9 hours before the alert went out and 97 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.

763 
WUUS51 KBOX 012154
SVRBOX
MAC011-027-NHC005-011-012300-
/O.NEW.KBOX.SV.W.0016.110601T2154Z-110601T2300Z/

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

THE NATIONAL WEATHER SERVICE IN TAUNTON HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  EXTREME NORTHWESTERN WORCESTER COUNTY IN CENTRAL MASSACHUSETTS...
  CHESHIRE COUNTY IN SOUTHERN NEW HAMPSHIRE...
  THIS INCLUDES THE CITIES OF...KEENE...JAFFREY...
  NORTHWESTERN HILLSBOROUGH COUNTY IN SOUTHERN NEW HAMPSHIRE...
  NORTHERN FRANKLIN COUNTY IN WESTERN MASSACHUSETTS...

* UNTIL 700 PM EDT

* AT 550 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL.  THIS
  STORM WAS LOCATED NEAR MONROE...OR 8 MILES NORTHEAST OF NORTH
  ADAMS...AND WAS MOVING EAST AT 40 MPH.

* SOME LOCATIONS IN THE WARNING INCLUDE...ROWE...HEATH...COLRAIN...
  LEYDEN...BERNARDSTON...HINSDALE...CHESTERFIELD...NORTHFIELD...
  WESTMORELAND...WINCHESTER...WARWICK...RICHMOND...SWANZEY...
  ROYALSTON...MARLBOROUGH...SULLIVAN...ROXBURY...TROY...
  FITZWILLIAM...NELSON...RINDGE...PETERBOROUGH...HARRISVILLE...
  HANCOCK AND DUBLIN.

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 4274 7302 4273 7247 4273 7246 4277 7250
      4276 7252 4288 7256 4290 7253 4297 7252
      4309 7197 4269 7192 4264 7296 4266 7296
      4267 7299 4270 7296 4270 7303
TIME...MOT...LOC 2154Z 263DEG 33KT 4274 7293

$$

BELK

1 follow-up statement

193 
WWUS51 KBOX 012246
SVSBOX

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

MAC011-027-NHC005-011-012256-
/O.CAN.KBOX.SV.W.0016.000000T0000Z-110601T2300Z/
CHESHIRE NH-WORCESTER MA-FRANKLIN MA-HILLSBOROUGH NH-
646 PM EDT WED JUN 1 2011

...THE SEVERE THUNDERSTORM WARNING FOR NORTHWESTERN HILLSBOROUGH...
NORTHERN FRANKLIN...EXTREME NORTHWESTERN WORCESTER AND CHESHIRE
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 4274 7302 4273 7247 4273 7246 4277 7250
      4276 7252 4288 7256 4290 7253 4297 7252
      4309 7197 4269 7192 4264 7296 4266 7296
      4267 7299 4270 7296 4270 7303
TIME...MOT...LOC 2246Z 263DEG 33KT 4280 7228

$$

BELK

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 1, 8:32 AM EDT	Severe Thunderstorm Warning	BOX	Hillsborough	43 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, 3:32 PM EDT	Severe Thunderstorm Warning	BOX	Cheshire	40 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
Jun 1, 6:44 PM EDT	Severe Thunderstorm Warning	BOX	Cheshire, Hillsborough	30 min
Jun 1, 7:12 PM EDT	Tornado Warning	BOX	Cheshire, Hillsborough	48 min
Jun 1, 7:15 PM EDT	Areal Flood Advisory	BOX	Cheshire, Hillsborough	104 min
Jun 1, 8:25 AM EDT	Special Weather Statement	BOX	Middlesex	50 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, 3:56 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, 5:57 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, 6:57 PM EDT	Tornado Warning	BOX	Hampden, Worcester	63 min
Jun 1, 7:14 PM EDT	Special Marine Warning	BOX		91 min
Jun 1, 7:55 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 New Hampshire, 2011 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.