Alert archive / Massachusetts / Severe Thunderstorm Warnings in 2016

Severe Thunderstorm Warning 33, NWS Boston/Norton, MA

July 17, 2016Bristol County, Plymouth County, Massachusetts

NWS Boston/Norton, MA issued this severe thunderstorm warning at Jul 17, 2016, 3:07 PM EDT for Bristol County, Plymouth County, Massachusetts. It was in force for 38 min. 7 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 17, 2016, 3:07 PM EDT (19:07 UTC)
Expired: Jul 17, 2016, 3:45 PM EDT
In force: 38 min
Issued by: NWS Boston/Norton, MA
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Bristol County, MA, Plymouth County, MA

The radar

The Boston radar (KBOX), 35 km from the middle of the area, began a volume at 19:07 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 17, 3:20 PM EDT	TSTM WND DMG	Taunton, MA	TREES AND WIRES DOWN ON RICHMOND STREET.
Jul 17, 3:35 PM EDT	TSTM WND DMG	Middleboro, MA	TREE DOWN ON OAK AND SPROUT STREETS.
Jul 17, 3:35 PM EDT	HAIL 0.75	Middleboro, MA
Jul 17, 3:39 PM EDT	HAIL 0.88	Middleboro, MA
Jul 17, 3:40 PM EDT	TSTM WND DMG	Middleboro, MA	MULTIPLE TREES DOWN ON SCHOOL STREET EXTENSION... TREE ON BUILDING ON NORTH STREET.
Jul 17, 3:50 PM EDT	TSTM WND DMG	Middleboro, MA	MULTIPLE LARGE TREES DOWN ON PRECINCT AND THOMPSON STREETS.
Jul 17, 3:55 PM EDT	MARINE TSTM WIND 39	4 Sw Plymouth, MA

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, 7.1 hours before the alert went out and 71 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: 460 J/kg
Mixed-layer CIN: -57 J/kg
Mixed-layer LCL: 640 m above ground
0-6 km bulk shear: 28 kt
0-1 km storm-relative helicity: 3 m²/s²
0-3 km storm-relative helicity: 11 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.4

Open this sounding in Storm Lab

The text

As transmitted.

008 
WUUS51 KBOX 171907
SVRBOX
MAC005-023-171945-
/O.NEW.KBOX.SV.W.0033.160717T1907Z-160717T1945Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TAUNTON MA
307 PM EDT SUN JUL 17 2016

THE NATIONAL WEATHER SERVICE IN TAUNTON HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTH CENTRAL BRISTOL COUNTY IN SOUTHEASTERN MASSACHUSETTS...
  CENTRAL PLYMOUTH COUNTY IN SOUTHEASTERN MASSACHUSETTS...

* UNTIL 345 PM EDT

* AT 306 PM EDT...A SEVERE THUNDERSTORM WAS LOCATED NEAR NORTON...OR
  NEAR TAUNTON...MOVING EAST AT 15 MPH.

  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...
  BROCKTON...PLYMOUTH...TAUNTON...BRIDGEWATER...MARSHFIELD...
  MANSFIELD...MIDDLEBOROUGH...EASTON...NORTON...PEMBROKE...DUXBURY...
  WHITMAN...EAST BRIDGEWATER...RAYNHAM...KINGSTON...CARVER...
  LAKEVILLE...HANSON...HALIFAX AND DIGHTON.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

TORRENTIAL RAINFALL IS OCCURRING WITH THIS STORM...AND MAY LEAD TO
FLASH FLOODING. DO NOT DRIVE YOUR VEHICLE THROUGH FLOODED ROADWAYS.

&&

LAT...LON 4184 7118 4202 7120 4211 7066 4209 7064
      4205 7066 4202 7062 4204 7066 4202 7068
      4200 7064 4202 7061 4201 7060 4199 7063
      4201 7071 4197 7067 4198 7065 4195 7065
      4195 7058 4193 7055 4189 7053
TIME...MOT...LOC 1906Z 263DEG 10KT 4195 7112 

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

FRANK

2 follow-up statements

734 
WWUS51 KBOX 171926
SVSBOX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TAUNTON MA
326 PM EDT SUN JUL 17 2016

MAC005-023-171945-
/O.CON.KBOX.SV.W.0033.000000T0000Z-160717T1945Z/
BRISTOL MA-PLYMOUTH MA-
326 PM EDT SUN JUL 17 2016

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 345 PM EDT
FOR NORTH CENTRAL BRISTOL AND CENTRAL PLYMOUTH COUNTIES...

AT 325 PM EDT...A SEVERE THUNDERSTORM WAS LOCATED OVER HALIFAX...OR
NEAR BRIDGEWATER...MOVING EAST AT 30 MPH.

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

SOURCE...RADAR INDICATED. 

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

LOCATIONS IMPACTED INCLUDE...
BROCKTON...PLYMOUTH...TAUNTON...BRIDGEWATER...MARSHFIELD...
MIDDLEBOROUGH...EASTON...PEMBROKE...DUXBURY...EAST BRIDGEWATER...
RAYNHAM...KINGSTON...CARVER...LAKEVILLE...HANSON...HALIFAX...
WEST BRIDGEWATER...BERKLEY AND PLYMPTON.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

TORRENTIAL RAINFALL IS OCCURRING WITH THIS STORM...AND MAY LEAD TO
FLASH FLOODING. DO NOT DRIVE YOUR VEHICLE THROUGH FLOODED ROADWAYS.

&&

LAT...LON 4185 7109 4203 7111 4211 7066 4209 7064
      4205 7066 4202 7062 4204 7066 4202 7068
      4200 7064 4202 7061 4201 7060 4199 7063
      4201 7071 4197 7067 4198 7065 4195 7065
      4195 7058 4193 7055 4189 7053
TIME...MOT...LOC 1925Z 263DEG 25KT 4197 7090 

HAIL...0.75IN
WIND...60MPH
 
$$

FRANK

206 
WWUS51 KBOX 171937
SVSBOX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TAUNTON MA
337 PM EDT SUN JUL 17 2016

MAC005-171946-
/O.CAN.KBOX.SV.W.0033.000000T0000Z-160717T1945Z/
BRISTOL MA-
337 PM EDT SUN JUL 17 2016

...THE SEVERE THUNDERSTORM WARNING FOR NORTH CENTRAL BRISTOL COUNTY
IS CANCELLED...
    
THE SEVERE THUNDERSTORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF
THE WARNED AREA. THEREFORE...THE WARNING HAS BEEN CANCELLED.

LAT...LON 4186 7097 4205 7102 4211 7066 4209 7064
      4205 7066 4202 7062 4204 7066 4202 7068
      4200 7064 4202 7061 4201 7060 4199 7063
      4201 7071 4197 7067 4198 7065 4195 7065
      4195 7058 4193 7055 4189 7053
TIME...MOT...LOC 1936Z 263DEG 10KT 4197 7086 

$$

MAC023-171945-
/O.CON.KBOX.SV.W.0033.000000T0000Z-160717T1945Z/
PLYMOUTH MA-
337 PM EDT SUN JUL 17 2016

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 345 PM EDT
FOR CENTRAL PLYMOUTH COUNTY...

AT 336 PM EDT...A SEVERE THUNDERSTORM WAS LOCATED OVER HALIFAX...OR
NEAR BRIDGEWATER...MOVING EAST AT 10 MPH.

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...
BROCKTON...PLYMOUTH...BRIDGEWATER...MARSHFIELD...MIDDLEBOROUGH...
PEMBROKE...DUXBURY...WHITMAN...EAST BRIDGEWATER...KINGSTON...
CARVER...LAKEVILLE...HANSON...HALIFAX...
WEST BRIDGEWATER AND PLYMPTON.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

TORRENTIAL RAINFALL IS OCCURRING WITH THIS STORM...AND MAY LEAD TO
FLASH FLOODING. DO NOT DRIVE YOUR VEHICLE THROUGH FLOODED ROADWAYS.

&&

LAT...LON 4186 7097 4205 7102 4211 7066 4209 7064
      4205 7066 4202 7062 4204 7066 4202 7068
      4200 7064 4202 7061 4201 7060 4199 7063
      4201 7071 4197 7067 4198 7065 4195 7065
      4195 7058 4193 7055 4189 7053
TIME...MOT...LOC 1936Z 263DEG 10KT 4197 7086 

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

FRANK

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 16, 10:02 PM EDT	Special Weather Statement	BOX	Hampshire	43 min
Jul 17, 3:28 AM EDT	Small Craft Advisory	BOX		49 hr
Jul 17, 1:54 PM EDT	Special Weather Statement	BOX	Norfolk	36 min
Jul 17, 2:20 PM EDT	Special Weather Statement	BOX	Norfolk	40 min
Jul 17, 2:33 PM EDT	Areal Flood Advisory	BOX	Bristol, Norfolk	57 min
Jul 17, 2:46 PM EDT	Severe Thunderstorm Warning	BOX	Bristol, Norfolk, Plymouth	44 min
Jul 17, 3:07 PM EDT	Areal Flood Advisory	BOX	Bristol, Plymouth	113 min
Jul 17, 3:32 PM EDT	Areal Flood Advisory	BOX	Plymouth	58 min
Jul 17, 3:34 PM EDT	Special Marine Warning	BOX		56 min
Jul 17, 3:43 PM EDT	Severe Thunderstorm Warning	BOX	Plymouth	37 min
Jul 17, 4:15 PM EDT	Special Weather Statement	BOX	Bristol	45 min
Jul 17, 5:57 PM EDT	Special Marine Warning	BOX		63 min
Jul 17, 6:17 PM EDT	Severe Thunderstorm Warning	BOX	Bristol	43 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.