Alert archive / Massachusetts / Severe Thunderstorm Warnings in 2011

Severe Thunderstorm Warning 64, NWS Boston/Norton, MA

July 8, 20114 counties in Massachusetts

NWS Boston/Norton, MA issued this severe thunderstorm warning at Jul 8, 2011, 8:57 AM EDT for 4 counties in Massachusetts. It was in force for 27 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: Jul 8, 2011, 8:57 AM EDT (12:57 UTC)
Expired: Jul 8, 2011, 9:24 AM EDT
In force: 27 min
Issued by: NWS Boston/Norton, MA
Area: Storm-based polygon

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

The radar

The Boston radar (KBOX), 123 km from the middle of the area, began a volume at 12:58 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 8, 9:03 AM EDT	HAIL 0.88	Huntington, MA	NICKEL SIZE HAIL AT LITTLEVILLE DAM.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Albany, NY (KALY), launched 12:00Z, 1.0 hours before the alert went out and 113 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: 1141 m above ground
0-6 km bulk shear: 39 kt
0-1 km storm-relative helicity: 74 m²/s²
0-3 km storm-relative helicity: 121 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

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

461 
WUUS51 KBOX 081257
SVRBOX
MAC011-013-015-027-081400-
/O.NEW.KBOX.SV.W.0064.110708T1257Z-110708T1400Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TAUNTON MA
857 AM EDT FRI JUL 8 2011

THE NATIONAL WEATHER SERVICE IN TAUNTON HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  EXTREME WEST CENTRAL WORCESTER COUNTY IN CENTRAL MASSACHUSETTS...
  SOUTHEASTERN FRANKLIN COUNTY IN WESTERN MASSACHUSETTS...
  NORTH CENTRAL HAMPDEN COUNTY IN WESTERN MASSACHUSETTS...
  HAMPSHIRE COUNTY IN WESTERN MASSACHUSETTS...
  THIS INCLUDES THE CITIES OF...NORTHAMPTON...AMHERST...

* UNTIL 1000 AM EDT

* AT 853 AM 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 NEAR
  HUNTINGTON...OR 12 MILES SOUTHWEST OF NORTHAMPTON...AND WAS MOVING
  EAST AT 30 MPH.

* SOME LOCATIONS IN THE WARNING INCLUDE...WESTHAMPTON...
  SOUTHAMPTON...EASTHAMPTON...SOUTH HADLEY...HATFIELD...HADLEY...
  GRANBY...PELHAM AND SHUTESBURY.

LOCALLY HEAVY DOWNPOURS ARE ALSO POSSIBLE WITH THIS STORM.

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.

&&

LAT...LON 4250 7228 4230 7221 4221 7291 4230 7294
TIME...MOT...LOC 1257Z 252DEG 28KT 4224 7282

$$

WTB

1 follow-up statement

595 
WWUS51 KBOX 081324
SVSBOX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TAUNTON MA
924 AM EDT FRI JUL 8 2011

MAC011-013-015-027-081333-
/O.CAN.KBOX.SV.W.0064.000000T0000Z-110708T1400Z/
WORCESTER MA-FRANKLIN MA-HAMPSHIRE MA-HAMPDEN MA-
924 AM EDT FRI JUL 8 2011

...THE SEVERE THUNDERSTORM WARNING FOR NORTH CENTRAL HAMPDEN...
HAMPSHIRE...SOUTHEASTERN FRANKLIN AND WEST CENTRAL WORCESTER COUNTIES
IS CANCELLED...

THE THUNDERSTORM HAS DIMINISHED IN INTENSITY.  LOCALLY HEAVY 
DOWNPOURS ARE STILL POSSIBLE NEAR WILLIAMSBURG...WHATELY...AND 
LEVERETT THROUGH 10 AM.

LAT...LON 4250 7228 4230 7221 4221 7291 4230 7294
TIME...MOT...LOC 1323Z 252DEG 28KT 4230 7256

$$

WTB

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 8, 5:03 AM EDT	Special Weather Statement	BOX	Hampshire	42 min
Jul 8, 5:18 AM EDT	Severe Thunderstorm Warning	BOX	Franklin, Hampden, Hampshire, Worcester	42 min
Jul 8, 6:00 AM EDT	Special Weather Statement	BOX	Worcester	45 min
Jul 8, 6:34 AM EDT	Special Weather Statement	BOX	Worcester	56 min
Jul 8, 6:41 AM EDT	Severe Thunderstorm Warning	BOX	Middlesex, Worcester	38 min
Jul 8, 7:02 AM EDT	Severe Thunderstorm Warning	BOX	Bristol, Norfolk, Worcester	34 min
Jul 8, 7:34 AM EDT	Special Weather Statement	BOX	Norfolk	41 min
Jul 8, 8:07 AM EDT	Special Weather Statement	BOX	Plymouth	53 min
Jul 8, 8:20 AM EDT	Areal Flood Advisory	BOX	Bristol, Norfolk, Plymouth	3 hr
Jul 8, 8:34 AM EDT	Areal Flood Advisory	BOX	Bristol	71 min
Jul 8, 8:39 AM EDT	Special Weather Statement	BOX	Hampden, Hampshire	66 min
Jul 8, 9:12 AM EDT	Areal Flood Advisory	BOX	Barnstable, Bristol, Plymouth	2 hr
Jul 8, 9:50 AM EDT	Special Marine Warning	BOX		25 min
Jul 8, 10:09 AM EDT	Special Weather Statement	BOX	Barnstable	66 min
Jul 8, 10:43 AM EDT	Areal Flood Advisory	BOX	Barnstable	94 min
Jul 8, 11:06 AM EDT	Special Marine Warning	BOX		54 min
Jul 8, 11:53 AM EDT	Special Marine Warning	BOX		67 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.