Alert archive / Massachusetts / Severe Thunderstorm Warnings in 2016

Severe Thunderstorm Warning 79, NWS Boston/Norton, MA

August 6, 2016Norfolk County, Worcester County, Massachusetts; Providence County, Rhode Island

NWS Boston/Norton, MA issued this severe thunderstorm warning at Aug 6, 2016, 5:42 PM EDT for Norfolk County, Worcester County, Massachusetts; Providence County, Rhode Island. It was in force for 33 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
Aug 6, 2016, 5:42 PM EDT (21:42 UTC)
Expired
Aug 6, 2016, 6:15 PM EDT
In force
33 min
Issued by
NWS Boston/Norton, MA
Area
Storm-based polygon
Hail
1.0 in
Wind
60.0 mph

Counties Norfolk County, MA, Worcester County, MA, Providence County, RI

The radar

The Boston radar (KBOX), 42 km from the middle of the area, began a volume at 21:45 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

TimeReportWhereRemark
Aug 6, 6:25 PM EDTTSTM WND DMGMillville, MATREE DOWN BLOCKING MOST OF CHESTNUT HILL ROAD. LIMB DOWN ON HILL ROAD.

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

The nearest sounding before it

Chatham, MA (KCHH), launched 12:00Z, 9.7 hours before the alert went out and 143 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-pSkew-T log-p diagram, Chatham, MA at 12:00Z on 2016-08-06Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Chatham, MA at 12:00Z on 2016-08-06The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 99 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
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
791 m above ground
0-6 km bulk shear
22 kt
0-1 km storm-relative helicity
99 m²/s²
0-3 km storm-relative helicity
110 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

548 
WUUS51 KBOX 062142
SVRBOX
MAC021-027-RIC007-062215-
/O.NEW.KBOX.SV.W.0079.160806T2142Z-160806T2215Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TAUNTON MA
542 PM EDT SAT AUG 6 2016

THE NATIONAL WEATHER SERVICE IN TAUNTON HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHWESTERN NORFOLK COUNTY IN EASTERN MASSACHUSETTS...
  SOUTHEASTERN WORCESTER COUNTY IN CENTRAL MASSACHUSETTS...
  NORTH CENTRAL PROVIDENCE COUNTY IN RHODE ISLAND...

* UNTIL 615 PM EDT

* AT 541 PM EDT...A SEVERE THUNDERSTORM WAS LOCATED OVER SUTTON...OR
  9 MILES WEST OF MILFORD...MOVING EAST AT 40 MPH. AMATEUR RADIO
  OPERATORS REPORTED WIRES DOWN IN AUBURN.

  HAZARD...60 MPH WIND GUSTS AND QUARTER SIZE HAIL. 

  SOURCE...RADAR INDICATED. 

  IMPACT...HAIL DAMAGE TO VEHICLES IS EXPECTED. EXPECT WIND DAMAGE 
           TO ROOFS...SIDING...AND TREES. 

* LOCATIONS IMPACTED INCLUDE...
  WORCESTER...WOONSOCKET...CUMBERLAND...FRANKLIN...MILFORD...
  GRAFTON...WEBSTER...BELLINGHAM...AUBURN...BURRILLVILLE...
  NORTHBRIDGE...OXFORD...HOLLISTON...UXBRIDGE...MILLBURY...MEDWAY...
  NORTH SMITHFIELD...NORFOLK...WRENTHAM AND BLACKSTONE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
BUILDING.

&&

LAT...LON 4222 7160 4220 7159 4218 7155 4219 7150
      4217 7150 4216 7148 4218 7143 4218 7141
      4219 7140 4220 7135 4198 7140 4201 7180
      4202 7180 4203 7189 4223 7182
TIME...MOT...LOC 2141Z 276DEG 33KT 4214 7171 

HAIL...1.00IN
WIND...60MPH
 
$$
FIELD
1 follow-up statement
403 
WWUS51 KBOX 062158
SVSBOX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TAUNTON MA
558 PM EDT SAT AUG 6 2016

MAC021-027-RIC007-062215-
/O.CON.KBOX.SV.W.0079.000000T0000Z-160806T2215Z/
NORFOLK MA-WORCESTER MA-PROVIDENCE RI-
558 PM EDT SAT AUG 6 2016

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 615 PM EDT
FOR SOUTHWESTERN NORFOLK...SOUTHEASTERN WORCESTER AND NORTH CENTRAL
PROVIDENCE COUNTIES...

AT 556 PM EDT...A SEVERE THUNDERSTORM WAS LOCATED OVER
NORTHBRIDGE...OR NEAR MILFORD...MOVING EAST AT 30 MPH.
DOPPLER RADAR CONTINUED TO INDICATE WINDS NEAR 60 MPH NEAR
WHITINSVILLE.

HAZARD...60 MPH WIND GUSTS AND QUARTER SIZE HAIL. 

SOURCE...RADAR INDICATED. 

IMPACT...EXPECT WIND DAMAGE TO ROOFS...SIDING...AND TREES. HAIL
         DAMAGE TO VEHICLES IS POSSIBLE.

LOCATIONS IMPACTED INCLUDE...
WOONSOCKET...CUMBERLAND...FRANKLIN...MILFORD...GRAFTON...WEBSTER...
BELLINGHAM...BURRILLVILLE...NORTHBRIDGE...UXBRIDGE...MEDWAY...
NORTH SMITHFIELD...NORFOLK...WRENTHAM...THOMPSON...BLACKSTONE...
SUTTON...DOUGLAS...MILLIS AND UPTON.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
BUILDING.

&&

LAT...LON 4217 7161 4216 7157 4216 7154 4215 7151
      4215 7136 4198 7140 4201 7180 4202 7180
      4202 7184 4217 7170
TIME...MOT...LOC 2156Z 283DEG 24KT 4211 7161 

HAIL...1.00IN
WIND...60MPH
 
$$
FIELD

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 6, 3:23 PM EDTSpecial Weather StatementBOXMiddlesex22 min
Aug 6, 3:55 PM EDTSpecial Weather StatementBOXEssex35 min
Aug 6, 4:17 PM EDTSpecial Weather StatementBOXBristol28 min
Aug 6, 4:46 PM EDTSpecial Weather StatementBOXWorcester44 min
Aug 6, 5:28 PM EDTAreal Flood AdvisoryBOXHampden, Worcester2 hr
Aug 6, 6:11 PM EDTSpecial Marine WarningBOX49 min
Aug 6, 6:13 PM EDTSevere Thunderstorm WarningBOXBristol, Norfolk34 min
Aug 6, 6:18 PM EDTSpecial Marine WarningBOX42 min
Aug 6, 3:33 PM EDTSpecial Weather StatementBOXWashington42 min
Aug 6, 6:05 PM EDTSpecial Weather StatementBOXBristol, Kent, Providence55 min

Nearby

Severe Thunderstorm Warnings in Massachusetts, 2016Severe Thunderstorm Warnings in Rhode Island, 2016Every 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.