Alert archive / Massachusetts / Severe Thunderstorm Warnings in 2011

Severe Thunderstorm Warning 73, NWS Boston/Norton, MA

July 26, 2011Franklin County, Hampden County, Hampshire County, Massachusetts

NWS Boston/Norton, MA issued this severe thunderstorm warning at Jul 26, 2011, 3:13 PM EDT for Franklin County, Hampden County, Hampshire County, Massachusetts. It was in force for 62 min. 5 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: Jul 26, 2011, 3:13 PM EDT (19:13 UTC)
Expired: Jul 26, 2011, 4:15 PM EDT
In force: 62 min
Issued by: NWS Boston/Norton, MA
Area: Storm-based polygon

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

The radar

The Albany radar (KENX), 102 km from the middle of the area, began a volume at 19:15 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
Jul 26, 3:35 PM EDT	TSTM WND DMG	Worthington, MA	TREE AND WIRES DOWN ON RIVER STREET
Jul 26, 3:55 PM EDT	TSTM WND DMG	2 Ne Huntington, MA	TREES DOWN AT LITTLEVILLE DAM
Jul 26, 3:55 PM EDT	TSTM WND DMG	Middlefield, MA	TREES AND POWER LINES DOWN ON SKYLINE TRAIL.
Jul 26, 3:55 PM EDT	TSTM WND DMG	Worthington, MA	TREES AND WIRES DOWN ON RIVER ROAD
Jul 26, 4:17 PM EDT	FUNNEL CLOUD	Easthampton, MA	FUNNEL CLOUD

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
Jul 26, 2:30 PM EDT	Severe Thunderstorm Watch	SPC	8 hr

The nearest sounding before it

Albany, NY (KALY), launched 12:00Z, 7.2 hours before the alert went out and 88 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: 72 J/kg
Mixed-layer CIN: -57 J/kg
Mixed-layer LCL: 611 m above ground
0-6 km bulk shear: 41 kt
0-1 km storm-relative helicity: 5 m²/s²
0-3 km storm-relative helicity: 36 m²/s²
Significant tornado parameter: 0.0
Supercell composite: -0.1

Open this sounding in Storm Lab

The text

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

509 
WUUS51 KBOX 261913
SVRBOX
MAC011-013-015-262015-
/O.NEW.KBOX.SV.W.0073.110726T1913Z-110726T2015Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TAUNTON MA
313 PM EDT TUE JUL 26 2011

THE NATIONAL WEATHER SERVICE IN TAUNTON HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTH CENTRAL FRANKLIN COUNTY IN WESTERN MASSACHUSETTS...
  EASTERN HAMPDEN COUNTY IN WESTERN MASSACHUSETTS...
  THIS INCLUDES THE CITY OF CHICOPEE...
  HAMPSHIRE COUNTY IN WESTERN MASSACHUSETTS...
  THIS INCLUDES THE CITIES OF...NORTHAMPTON...AMHERST...

* UNTIL 415 PM EDT

* AT 311 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 10
  MILES WEST OF EAST WINDSOR...OR 17 MILES SOUTH OF NORTH ADAMS...AND
  WAS MOVING EAST AT 45 MPH.

* SOME LOCATIONS IN THE WARNING INCLUDE...MIDDLEFIELD...
  WORTHINGTON...CUMMINGTON...CHESTERFIELD...GOSHEN...WILLIAMSBURG...
  WESTHAMPTON...SOUTHAMPTON...EASTHAMPTON...HATFIELD...HADLEY...
  HOLYOKE...SOUTH HADLEY...GRANBY...LUDLOW...BELCHERTOWN...WILBRAHAM
  AND HAMPDEN.

SEVERE THUNDERSTORMS PRODUCE DAMAGING WINDS AND LARGE HAIL...AS WELL
AS DEADLY LIGHTNING AND TORRENTIAL RAIN. GET TO SAFE SHELTER NOW...
INSIDE A STURDY BUILDING OR IN A VEHICLE. DO NOT SEEK SHELTER UNDER
TREES. IF YOU CAN HEAR THUNDER...YOU ARE CLOSE ENOUGH TO BE STRUCK BY
LIGHTNING. DRIVERS SHOULD BE ALERT FOR PONDING OF WATER AND AVOID
FLOODED ROADS.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 1000 PM EDT
TUESDAY EVENING FOR NORTHERN CONNECTICUT AND MASSACHUSETTS AND
SOUTHERN NEW HAMPSHIRE AND CENTRAL RHODE ISLAND.

&&

LAT...LON 4239 7302 4248 7299 4249 7298 4239 7233
      4205 7238 4233 7307 4239 7307
TIME...MOT...LOC 1913Z 292DEG 41KT 4244 7314

$$

NOCERA

1 follow-up statement

915 
WWUS51 KBOX 261954
SVSBOX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TAUNTON MA
354 PM EDT TUE JUL 26 2011

MAC011-013-015-262015-
/O.CON.KBOX.SV.W.0073.000000T0000Z-110726T2015Z/
FRANKLIN MA-HAMPSHIRE MA-HAMPDEN MA-
354 PM EDT TUE JUL 26 2011

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 415 PM EDT
FOR EASTERN HAMPDEN...HAMPSHIRE AND EXTREME SOUTH CENTRAL FRANKLIN
COUNTIES...

AT 352 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO 
INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING LARGE HAIL... 
DAMAGING WINDS IN EXCESS OF 60 MPH AND VERY HEAVY RAINFALL.   THIS 
STORM WAS LOCATED NEAR NORTHAMPTON...MOVING EAST AT 35 MPH. THIS 
STORM HAS A HISTORY OF DOWNING TREES IN CENTRAL BERKSHIRE COUNTY. 

OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO SOUTH
HADLEY...GRANBY...CHICOPEE...LUDLOW...BELCHERTOWN...WILBRAHAM AND
HAMPDEN

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 1000 PM EDT
TUESDAY EVENING FOR NORTHERN CONNECTICUT AND MASSACHUSETTS AND
SOUTHERN NEW HAMPSHIRE AND CENTRAL RHODE ISLAND.

&&

LAT...LON 4232 7300 4235 7295 4243 7293 4245 7292
      4239 7233 4205 7238
TIME...MOT...LOC 1952Z 292DEG 41KT 4227 7258

$$

NOCERA

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 26, 4:09 PM EDT	Severe Thunderstorm Warning	BOX	Hampden, Hampshire	66 min
Jul 26, 4:10 PM EDT	Special Weather Statement	BOX	Franklin	65 min
Jul 26, 4:14 PM EDT	Areal Flood Advisory	BOX	Franklin, Hampden, Hampshire, Worcester	99 min
Jul 26, 4:15 PM EDT	Severe Thunderstorm Warning	BOX	Hampden, Hampshire	60 min
Jul 26, 4:28 PM EDT	Tornado Warning	BOX	Hampden, Hampshire	47 min
Jul 26, 4:51 PM EDT	Tornado Warning	BOX	Hampden, Worcester	39 min
Jul 26, 4:52 PM EDT	Severe Thunderstorm Warning	BOX	Hampden	53 min
Jul 26, 4:59 PM EDT	Areal Flood Advisory	BOX	Hampden, Worcester	98 min
Jul 26, 5:26 PM EDT	Areal Flood Advisory	BOX	Worcester	106 min
Jul 26, 5:30 PM EDT	Severe Thunderstorm Warning	BOX	Norfolk, Worcester	45 min
Jul 26, 6:22 PM EDT	Areal Flood Advisory	BOX	Bristol, Middlesex, Norfolk, Worcester	53 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.