Alert archive / Massachusetts / Severe Thunderstorm Warnings in 2016

Severe Thunderstorm Warning 56, NWS Boston/Norton, MA

July 22, 20164 counties in Massachusetts

NWS Boston/Norton, MA issued this severe thunderstorm warning at Jul 22, 2016, 8:31 PM EDT for 4 counties in Massachusetts. It was in force for 59 min. 3 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 22, 2016, 8:31 PM EDT (00:31 UTC)
Expired
Jul 22, 2016, 9:30 PM EDT
In force
59 min
Issued by
NWS Boston/Norton, MA
Area
Storm-based polygon
Hail
1.0 in
Wind
60.0 mph

Counties Middlesex County, MA, Norfolk County, MA, Plymouth County, MA, Suffolk County, MA

The radar

The Boston radar (KBOX), 34 km from the middle of the area, began a volume at 00:34 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
Jul 22, 8:45 PM EDTTSTM WND DMGStoughton, MATREES ON WIRES ON MORTON ST.
Jul 22, 8:45 PM EDTTSTM WND DMGStoughton, MATREES ON WIRES ON THORNTON ST.
Jul 22, 8:50 PM EDTTSTM WND DMGStoughton, MATREE AND WIRES DOWN ON HOUSE ON BAY RD.

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 00:00Z, 0.5 hours before the alert went out and 106 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 00:00Z on 2016-07-23Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 468 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Chatham, MA at 00:00Z on 2016-07-23The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 92 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
468 J/kg
Mixed-layer CIN
-204 J/kg
Mixed-layer LCL
1054 m above ground
0-6 km bulk shear
15 kt
0-1 km storm-relative helicity
92 m²/s²
0-3 km storm-relative helicity
157 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.1

Open this sounding in Storm Lab

The text

As transmitted.

850 
WUUS51 KBOX 230031
SVRBOX
MAC017-021-023-025-230130-
/O.NEW.KBOX.SV.W.0056.160723T0031Z-160723T0130Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TAUNTON MA
831 PM EDT FRI JUL 22 2016

THE NATIONAL WEATHER SERVICE IN TAUNTON HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHWESTERN PLYMOUTH COUNTY IN SOUTHEASTERN MASSACHUSETTS...
  NORFOLK COUNTY IN EASTERN MASSACHUSETTS...
  SUFFOLK COUNTY IN EASTERN MASSACHUSETTS...
  SOUTHEASTERN MIDDLESEX COUNTY IN NORTHEASTERN MASSACHUSETTS...

* UNTIL 930 PM EDT

* AT 830 PM EDT...A SEVERE THUNDERSTORM WAS LOCATED OVER DOVER...OR
  NEAR NEEDHAM...MOVING EAST AT 25 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...
  BOSTON...BROCKTON...QUINCY...NEWTON...FRAMINGHAM...WALTHAM...
  BROOKLINE...WEYMOUTH...BRAINTREE...NATICK...RANDOLPH...FRANKLIN...
  NEEDHAM...NORWOOD...WELLESLEY...MILTON...STOUGHTON...MARSHFIELD...
  DEDHAM AND WALPOLE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THIS IS A DANGEROUS SITUATION. THIS STORM IS PRODUCING WIDESPREAD
WIND DAMAGE. SEEK SHELTER NOW INSIDE A STURDY STRUCTURE AND STAY
AWAY FROM WINDOWS!

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

&&

LAT...LON 4234 7101 4232 7100 4232 7105 4231 7097
      4229 7102 4227 7099 4230 7093 4225 7096
      4225 7088 4232 7093 4232 7092 4226 7087
      4226 7086 4220 7071 4203 7075 4206 7107
      4209 7108 4207 7114 4210 7145 4237 7141
TIME...MOT...LOC 0030Z 282DEG 22KT 4223 7129 

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

FRANK
2 follow-up statements
882 
WWUS51 KBOX 230055
SVSBOX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TAUNTON MA
855 PM EDT FRI JUL 22 2016

MAC017-230104-
/O.CAN.KBOX.SV.W.0056.000000T0000Z-160723T0130Z/
MIDDLESEX MA-
855 PM EDT FRI JUL 22 2016

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN MIDDLESEX 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 4234 7101 4232 7100 4232 7105 4231 7097
      4229 7102 4227 7099 4230 7093 4225 7096
      4225 7088 4232 7093 4232 7092 4226 7087
      4226 7086 4220 7071 4203 7075 4206 7107
      4209 7108 4207 7114 4209 7111 4232 7115
TIME...MOT...LOC 0054Z 280DEG 33KT 4210 7098 

$$

MAC021-023-025-230130-
/O.CON.KBOX.SV.W.0056.000000T0000Z-160723T0130Z/
PLYMOUTH MA-NORFOLK MA-SUFFOLK MA-
855 PM EDT FRI JUL 22 2016

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 930 PM EDT
FOR NORTHWESTERN PLYMOUTH...NORTHEASTERN NORFOLK AND SOUTHWESTERN
SUFFOLK COUNTIES...

AT 854 PM EDT...A SEVERE THUNDERSTORM WAS LOCATED OVER ABINGTON...OR
OVER BROCKTON...MOVING EAST AT 35 MPH.

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

SOURCE...RADAR INDICATED. 

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

LOCATIONS IMPACTED INCLUDE...
BOSTON...BROCKTON...QUINCY...BROOKLINE...WEYMOUTH...BRAINTREE...
RANDOLPH...MILTON...STOUGHTON...MARSHFIELD...EASTON...HINGHAM...
CANTON...SCITUATE...PEMBROKE...ROCKLAND...ABINGTON...DUXBURY...
WHITMAN AND HANOVER.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4234 7101 4232 7100 4232 7105 4231 7097
      4229 7102 4227 7099 4230 7093 4225 7096
      4225 7088 4232 7093 4232 7092 4226 7087
      4226 7086 4220 7071 4203 7075 4206 7107
      4209 7108 4207 7114 4209 7111 4232 7115
TIME...MOT...LOC 0054Z 280DEG 33KT 4210 7098 

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

FRANK
632 
WWUS51 KBOX 230109
SVSBOX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TAUNTON MA
909 PM EDT FRI JUL 22 2016

MAC021-025-230118-
/O.CAN.KBOX.SV.W.0056.000000T0000Z-160723T0130Z/
NORFOLK MA-SUFFOLK MA-
909 PM EDT FRI JUL 22 2016

...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN NORFOLK AND
SOUTHWESTERN SUFFOLK COUNTIES IS CANCELLED...
    
THE SEVERE THUNDERSTORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF
THE WARNED AREA.  THEREFORE...THE WARNING HAS BEEN CANCELLED.

LAT...LON 4217 7072 4217 7073 4216 7072 4203 7075
      4205 7097 4209 7098 4215 7095 4216 7092
      4220 7092 4224 7089 4224 7090 4226 7087
      4220 7073 4220 7071
TIME...MOT...LOC 0108Z 282DEG 22KT 4208 7086 

$$

MAC023-230130-
/O.CON.KBOX.SV.W.0056.000000T0000Z-160723T0130Z/
PLYMOUTH MA-
909 PM EDT FRI JUL 22 2016

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 930 PM EDT
FOR NORTHWESTERN PLYMOUTH COUNTY...

AT 908 PM EDT...A SEVERE THUNDERSTORM WAS LOCATED OVER HANSON...OR 8
MILES WEST OF MARSHFIELD...MOVING EAST AT 25 MPH.

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

SOURCE...RADAR INDICATED. 

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

LOCATIONS IMPACTED INCLUDE...
MARSHFIELD...HINGHAM...SCITUATE...PEMBROKE...ROCKLAND...ABINGTON...
DUXBURY...WHITMAN...HANOVER...EAST BRIDGEWATER...NORWELL...
HANSON AND COHASSET.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

CONTINUOUS CLOUD TO GROUND LIGHTNING IS OCCURRING WITH THIS STORM.
MOVE INDOORS IMMEDIATELY. LIGHTNING IS ONE OF NATURE'S LEADING
KILLERS. REMEMBER...IF YOU CAN HEAR THUNDER...YOU ARE CLOSE ENOUGH TO
BE STRUCK BY LIGHTNING.

&&

LAT...LON 4217 7072 4217 7073 4216 7072 4203 7075
      4205 7097 4209 7098 4215 7095 4216 7092
      4220 7092 4224 7089 4224 7090 4226 7087
      4220 7073 4220 7071
TIME...MOT...LOC 0108Z 282DEG 22KT 4208 7086 

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

FRANK

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 22, 8:15 PM EDTSpecial Marine WarningBOX90 min
Jul 22, 8:25 PM EDTSevere Thunderstorm WarningBOXBristol, Norfolk65 min
Jul 22, 8:44 PM EDTSpecial Marine WarningBOX61 min
Jul 22, 8:44 PM EDTSevere Thunderstorm WarningBOXBristol46 min
Jul 22, 8:49 PM EDTSevere Thunderstorm WarningBOXBristol, Plymouth56 min
Jul 22, 8:53 PM EDTSpecial Marine WarningBOX52 min
Jul 22, 9:04 PM EDTSevere Thunderstorm WarningBOXPlymouth41 min
Jul 22, 9:27 PM EDTSpecial Weather StatementBOXBristol48 min
Jul 22, 9:40 PM EDTSevere Thunderstorm WarningBOXBarnstable, Plymouth35 min
Jul 22, 9:42 PM EDTSpecial Marine WarningBOX48 min
Jul 22, 10:05 PM EDTSevere Thunderstorm WarningBOXBarnstable40 min
Jul 22, 10:09 PM EDTSpecial Marine WarningBOX66 min
Jul 22, 10:15 PM EDTSpecial Marine WarningBOX60 min
Jul 22, 10:25 PM EDTSevere Thunderstorm WarningBOXBristol65 min
Jul 22, 10:40 PM EDTSpecial Marine WarningBOX65 min
Jul 22, 10:46 PM EDTSpecial Marine WarningBOX59 min
Jul 22, 11:06 PM EDTSevere Thunderstorm WarningBOXBristol54 min
Jul 22, 11:14 PM EDTSevere Thunderstorm WarningBOXBarnstable46 min
Jul 22, 11:37 PM EDTSpecial Marine WarningBOX83 min
Jul 22, 11:39 PM EDTSpecial Marine WarningBOX66 min
Jul 22, 11:55 PM EDTSevere Thunderstorm WarningBOXBarnstable, Bristol, Dukes, Plymouth50 min
Jul 23, 12:46 AM EDTSevere Thunderstorm WarningBOXDukes, Nantucket44 min
Jul 23, 1:10 AM EDTSpecial Weather StatementBOXBristol50 min
Jul 23, 1:41 AM EDTSpecial Weather StatementBOXBarnstable, Dukes, Nantucket94 min
Jul 23, 5:36 PM EDTSpecial Weather StatementBOXSuffolk39 min
Jul 23, 5:43 PM EDTSpecial Weather StatementBOXSuffolk32 min
Jul 23, 5:46 PM EDTSevere Thunderstorm WarningBOXEssex, Middlesex, Suffolk44 min
Jul 23, 5:52 PM EDTSpecial Marine WarningBOX38 min
Jul 23, 6:01 PM EDTSpecial Weather StatementBOXNorfolk44 min
Jul 23, 6:22 PM EDTSpecial Marine WarningBOX38 min
Jul 23, 6:27 PM EDTSpecial Weather StatementBOXSuffolk48 min
Jul 23, 6:38 PM EDTSevere Thunderstorm WarningBOXEssex, Middlesex, Worcester52 min
Jul 23, 6:46 PM EDTSpecial Marine WarningBOX119 min
Jul 23, 6:52 PM EDTSevere Thunderstorm WarningBOXFranklin38 min
Jul 23, 7:06 PM EDTSevere Thunderstorm WarningBOXEssex, Middlesex, Norfolk, Suffolk, Worcester54 min
Jul 23, 7:15 PM EDTSevere Thunderstorm WarningBOXFranklin, Hampden, Hampshire, Worcester60 min
Jul 23, 7:29 PM EDTSevere Thunderstorm WarningBOXEssex, Middlesex, Worcester31 min
Jul 23, 7:35 PM EDTSpecial Marine WarningBOX55 min
Jul 23, 7:46 PM EDTSpecial Marine WarningBOX59 min
Jul 23, 7:50 PM EDTSpecial Weather StatementBOXBristol40 min
Jul 23, 7:53 PM EDTSpecial Marine WarningBOX67 min
Jul 23, 7:54 PM EDTSpecial Weather StatementBOXBristol, Norfolk51 min
Jul 23, 7:57 PM EDTSpecial Weather StatementBOXBristol, Norfolk48 min

Nearby

Severe Thunderstorm Warnings in Massachusetts, 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.