Alert archive / Massachusetts / Severe Thunderstorm Warnings in 2016

Severe Thunderstorm Warning 74, NWS Boston/Norton, MA

July 23, 20165 counties in Massachusetts

NWS Boston/Norton, MA issued this severe thunderstorm warning at Jul 23, 2016, 7:06 PM EDT for 5 counties in Massachusetts. It was in force for 54 min. 22 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 23, 2016, 7:06 PM EDT (23:06 UTC)
Expired
Jul 23, 2016, 8:00 PM EDT
In force
54 min
Issued by
NWS Boston/Norton, MA
Area
Storm-based polygon
Hail
0.75 in
Wind
60.0 mph

Counties Essex County, MA, Middlesex County, MA, Norfolk County, MA, Suffolk County, MA, Worcester County, MA

The radar

The Boston radar (KBOX), 57 km from the middle of the area, began a volume at 23:09 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 23, 7:06 PM EDTTSTM WND DMGPeabody, MAMULTIPLE TREES AND WIRES DOWN IN WEST PEABODY... INCLUDING ON LOWELL STREET... NEWBRIDGE ROAD... AND POCAHONTAS DRIVE.
Jul 23, 7:08 PM EDTTSTM WND DMGLeominster, MAWIRES DOWN AND A TREE UPROOTED.
Jul 23, 7:09 PM EDTTSTM WND DMGBillerica, MALARGE BRANCH DOWN ON CONCORD STREET.
Jul 23, 7:11 PM EDTTSTM WND DMGGroton, MATREES AND POWER LINES DOWN ON LOWELL ROAD.
Jul 23, 7:12 PM EDTTSTM WND DMGConcord, MATREE DOWN ONTO THE COLONIAL INN. TREE DOWN ACROSS SHAGBARK ROAD...EVERETT STREET...AND MAIN STREET.
Jul 23, 7:15 PM EDTTSTM WND DMGLittleton, MALARGE TREE AND POWER LINES DOWN IN WYCHWOOD HEIGHTS.
Jul 23, 7:15 PM EDTTSTM WND DMGRevere, MATREE DOWN ON A CAR ON FOWLER AVENUE.
Jul 23, 7:23 PM EDTTSTM WND DMGBoston, MA*** 1 INJ *** AWNING FELL ONTO A PEDESTRIAN AT THE LENOX HOTEL ON EXETER STREET. PERSON WAS INJURED.
Jul 23, 7:25 PM EDTTSTM WND DMGConcord, MATREE DOWN ON CAR ON WESTFORD ROAD. TREE DOWN ON WIRES ON OLD STOW ROAD. WIRES DOWNED ON LINDSAY POND ROAD.
Jul 23, 7:27 PM EDTTSTM WND DMGTopsfield, MANUMEROUS TREES AND WIRES DOWN...INCLUDING VALLEY ROAD AND ROUTE 97.
Jul 23, 7:30 PM EDTTSTM WND DMGBoston, MAMULTIPLE TREES AND WIRES DOWN...INCLUDING ON BARSTOOL STREET. A TREE WAS DOWNED ONTO A CAR ON FORRESTER AND WASHINGTON STREETS. TREE DOWN ON HOUSTON ROAD. PORTION OF A CHIMNEY WAS BLOWN OVER ONTO KEITH STREET.
Jul 23, 7:30 PM EDTTSTM WND DMGJamaica Plain, MATREE DOWN ON BOYLSTON STREET.
Jul 23, 7:30 PM EDTTSTM WND DMGLeominster, MATREE DOWN BLOCKING WILLOW STREET.
Jul 23, 7:30 PM EDTTSTM WND DMGNorthborough, MALARGE BRANCH DOWN ON MEADOW ROAD.
Jul 23, 7:31 PM EDTTSTM WND DMGNorthborough, MATREE DOWN.
Jul 23, 7:31 PM EDTTSTM WND DMGWorcester, MAPOWER LINES DOWN ON BURNCOAT STREET.
Jul 23, 7:32 PM EDTTSTM WND DMGLeominster, MATREE DOWN ON WILLOW STREET.
Jul 23, 7:32 PM EDTTSTM WND DMGReading, MALARGE BRANCH DOWN.
Jul 23, 7:35 PM EDTTSTM WND DMGLexington, MALARGE LIMB DOWN ON POWER LINES ON HANCOCK STREET.
Jul 23, 7:35 PM EDTTSTM WND DMGWaltham, MABRANCH DOWN ON A GARAGE ON CHARLES STREET.
Jul 23, 7:44 PM EDTTSTM WND DMGCambridge, MATREE DOWN ON WIRES ON MASSACHUSETTS AVENUE NEAR HARVARD LAW SCHOOL.
Jul 23, 7:44 PM EDTTSTM WND DMGLynn, MAMULTIPLE TREES...LIMBS...AND WIRES DOWN IN MULTIPLE LOCATIONS.

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

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

IssuedProductOfficeLasted
Jul 23, 6:04 PM EDTSevere Thunderstorm WatchSPC2 hr

The nearest sounding before it

Chatham, MA (KCHH), launched 12:00Z, 11.1 hours before the alert went out and 122 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 2016-07-23Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 186 joules per kilogram.LCLLFCEL10008507005003002001001 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 2016-07-23The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 71 square meters per square second.19395878Sfc1 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
186 J/kg
Mixed-layer CIN
-143 J/kg
Mixed-layer LCL
1118 m above ground
0-6 km bulk shear
36 kt
0-1 km storm-relative helicity
71 m²/s²
0-3 km storm-relative helicity
110 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.7

Open this sounding in Storm Lab

The text

As transmitted.

801 
WUUS51 KBOX 232306
SVRBOX
MAC009-017-021-025-027-240000-
/O.NEW.KBOX.SV.W.0074.160723T2306Z-160724T0000Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TAUNTON MA
706 PM EDT SAT JUL 23 2016

THE NATIONAL WEATHER SERVICE IN TAUNTON HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHERN ESSEX COUNTY IN NORTHEASTERN MASSACHUSETTS...
  NORTH CENTRAL NORFOLK COUNTY IN EASTERN MASSACHUSETTS...
  NORTHEASTERN WORCESTER COUNTY IN CENTRAL MASSACHUSETTS...
  SUFFOLK COUNTY IN EASTERN MASSACHUSETTS...
  MIDDLESEX COUNTY IN NORTHEASTERN MASSACHUSETTS...

* UNTIL 800 PM EDT

* AT 704 PM EDT...A CLUSTER OF SEVERE THUNDERSTORMS WAS DROPPING
  SOUTH FROM FAR NORTHERN NEW HAMPSHIRE.  HOWEVER, DAMAGING WIND
  GUSTS WERE OCCURRING OUT OF AHEAD THE ACTUAL THUNDERSTORMS.  

  HAZARD...60 MPH WIND GUSTS. 

  SOURCE...TRAINED WEATHER SPOTTERS HAVE REPORTED WIND DAMAGE IN
           NORTH CENTRAL AND NORTHEAST MASSACHUSETTS.

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

* LOCATIONS IMPACTED INCLUDE...
  BOSTON...WORCESTER...LOWELL...CAMBRIDGE...LYNN...NEWTON...
  SOMERVILLE...FRAMINGHAM...WALTHAM...MALDEN...BROOKLINE...MEDFORD...
  REVERE...PEABODY...ARLINGTON...EVERETT...SALEM...LEOMINSTER...
  FITCHBURG AND BILLERICA.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4265 7059 4253 7078 4256 7078 4254 7090
      4254 7087 4242 7091 4243 7091 4246 7094
      4241 7099 4233 7089 4238 7101 4232 7093
      4238 7105 4231 7105 4231 7095 4222 7181
      4256 7207 4269 7082
TIME...MOT...LOC 2304Z 321DEG 29KT 4263 7139 

HAIL...<.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, 8:31 PM EDTSevere Thunderstorm WarningBOXMiddlesex, Norfolk, Plymouth, Suffolk59 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, 7:15 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.