Alert archive / Massachusetts / Severe Thunderstorm Warnings in 2016

Severe Thunderstorm Warning 31, NWS Boston/Norton, MA

July 15, 2016Franklin County, Hampden County, Hampshire County, Massachusetts

NWS Boston/Norton, MA issued this severe thunderstorm warning at Jul 15, 2016, 7:55 PM EDT for Franklin County, Hampden County, Hampshire County, Massachusetts. It was in force for 22 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: Jul 15, 2016, 7:55 PM EDT (23:55 UTC)
Expired: Jul 15, 2016, 8:17 PM EDT
In force: 22 min
Issued by: NWS Boston/Norton, MA
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

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

The radar

The Albany radar (KENX), 92 km from the middle of the area, began a volume at 23:55 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 nearest sounding before it

Albany, NY (KALY), launched 12:00Z, 11.9 hours before the alert went out and 78 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 1310 m above ground
0-6 km bulk shear: 48 kt
0-1 km storm-relative helicity: -29 m²/s²
0-3 km storm-relative helicity: 86 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.6

Open this sounding in Storm Lab

The text

As transmitted.

116 
WUUS51 KBOX 152355
SVRBOX
MAC011-013-015-160045-
/O.NEW.KBOX.SV.W.0031.160715T2355Z-160716T0045Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TAUNTON MA
755 PM EDT FRI JUL 15 2016

THE NATIONAL WEATHER SERVICE IN TAUNTON HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  WESTERN HAMPSHIRE COUNTY IN WESTERN MASSACHUSETTS...
  NORTHWESTERN HAMPDEN COUNTY IN WESTERN MASSACHUSETTS...
  WEST CENTRAL FRANKLIN COUNTY IN WESTERN MASSACHUSETTS...

* UNTIL 845 PM EDT

* AT 754 PM EDT...A SEVERE THUNDERSTORM WAS LOCATED NEAR CHESHIRE...OR
  8 MILES EAST OF PITTSFIELD...MOVING EAST AT 30 MPH.

  HAZARD...60 MPH WIND GUSTS. 

  SOURCE...RADAR INDICATED. 

  IMPACT...EXPECT DAMAGE TO ROOFS...SIDING...AND TREES. 

* LOCATIONS IMPACTED INCLUDE...
  NORTHAMPTON...DEERFIELD...SOUTHAMPTON...WILLIAMSBURG...HUNTINGTON...
  CONWAY...ASHFIELD...WESTHAMPTON...WHATELY...CHESTER...CHESTERFIELD...
  WORTHINGTON...GOSHEN...CUMMINGTON...MONTGOMERY...PLAINFIELD...
  MIDDLEFIELD...HAWLEY AND EAST WINDSOR.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THIS IS A POTENTIALLY DEADLY STORM. SEEK SHELTER IN AN INTERIOR ROOM
ON THE LOWEST FLOOR OF A WELL-BUILT STRUCTURE. ABANDON VEHICLES IN
SEARCH OF A MORE SUBSTANTIAL PERMANENT STRUCTURE. STAY AWAY FROM
WINDOWS.

&&

LAT...LON 4239 7305 4238 7301 4252 7297 4257 7297
      4252 7263 4221 7281 4228 7300 4231 7300
      4231 7303 4233 7306 4238 7307
TIME...MOT...LOC 2354Z 285DEG 26KT 4249 7310 

HAIL...<.75IN
WIND...60MPH
 
$$

SIPPRELL

1 follow-up statement

645 
WWUS51 KBOX 160017
SVSBOX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TAUNTON MA
817 PM EDT FRI JUL 15 2016

MAC011-013-015-160027-
/O.CAN.KBOX.SV.W.0031.000000T0000Z-160716T0045Z/
HAMPSHIRE MA-HAMPDEN MA-FRANKLIN MA-
817 PM EDT FRI JUL 15 2016

...THE SEVERE THUNDERSTORM WARNING FOR WESTERN HAMPSHIRE...
NORTHWESTERN HAMPDEN AND WEST CENTRAL FRANKLIN COUNTIES IS
CANCELLED...
                
THE STORM WHICH PROMPTED THE WARNING HAS WEAKENED BELOW SEVERE
LIMITS...AND NO LONGER POSE AN IMMEDIATE THREAT TO LIFE OR PROPERTY.
THEREFORE...THE WARNING HAS BEEN CANCELLED.  HOWEVER GUSTY WINDS AND
HEAVY RAIN ARE STILL POSSIBLE WITH THIS THUNDERSTORM.

LAT...LON 4239 7305 4238 7301 4252 7297 4257 7297
      4252 7263 4221 7281 4228 7300 4231 7300
      4231 7303 4233 7306 4238 7307
TIME...MOT...LOC 0015Z 285DEG 26KT 4245 7288 

$$

SIPPRELL

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 15, 4:11 AM EDT	Dense Fog Advisory	BOX	Barnstable, Bristol, Norfolk, Plymouth	5 hr
Jul 15, 2:02 PM EDT	Special Weather Statement	BOX	Plymouth	43 min
Jul 15, 2:11 PM EDT	Severe Thunderstorm Warning	BOX	Bristol	49 min
Jul 15, 2:12 PM EDT	Special Marine Warning	BOX		48 min
Jul 15, 2:18 PM EDT	Special Weather Statement	BOX	Plymouth	42 min
Jul 15, 2:34 PM EDT	Areal Flood Advisory	BOX	Bristol	56 min
Jul 15, 2:34 PM EDT	Special Weather Statement	BOX	Plymouth	41 min
Jul 15, 2:36 PM EDT	Special Marine Warning	BOX		54 min
Jul 15, 2:54 PM EDT	Special Marine Warning	BOX		51 min
Jul 15, 2:58 PM EDT	Severe Thunderstorm Warning	BOX	Bristol	28 min
Jul 15, 3:06 PM EDT	Special Marine Warning	BOX		54 min
Jul 15, 3:08 PM EDT	Special Weather Statement	BOX	Plymouth	52 min
Jul 15, 3:13 PM EDT	Special Weather Statement	BOX	Barnstable	47 min
Jul 15, 3:28 PM EDT	Severe Thunderstorm Warning	BOX	Barnstable	47 min
Jul 15, 3:34 PM EDT	Severe Thunderstorm Warning	BOX	Plymouth	23 min
Jul 15, 3:50 PM EDT	Special Marine Warning	BOX		55 min
Jul 15, 4:17 PM EDT	Special Marine Warning	BOX		43 min
Jul 15, 4:54 PM EDT	Special Weather Statement	BOX	Franklin	51 min
Jul 15, 7:31 PM EDT	Special Weather Statement	BOX	Franklin	44 min

Nearby

Severe Thunderstorm Warnings in Massachusetts, 2016 Every severe thunderstorm warning in 2016

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.