Alert archive / Massachusetts / Severe Thunderstorm Warnings in 2016

Severe Thunderstorm Warning 78, NWS Boston/Norton, MA

July 23, 2016Barnstable County, Dukes County, Massachusetts

NWS Boston/Norton, MA issued this severe thunderstorm warning at Jul 23, 2016, 9:00 PM EDT for Barnstable County, Dukes County, Massachusetts. It was in force for 45 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued
Jul 23, 2016, 9:00 PM EDT (01:00 UTC)
Expired
Jul 23, 2016, 9:45 PM EDT
In force
45 min
Issued by
NWS Boston/Norton, MA
Area
Storm-based polygon
Hail
0.75 in
Wind
60.0 mph

Counties Barnstable County, MA, Dukes County, MA

The radar

The Boston radar (KBOX), 68 km from the middle of the area, began a volume at 01:03 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.

The nearest sounding before it

Chatham, MA (KCHH), launched 00:00Z, 1.0 hours before the alert went out and 66 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 2016-07-24Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 639 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 2016-07-24The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 53 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
639 J/kg
Mixed-layer CIN
-118 J/kg
Mixed-layer LCL
1924 m above ground
0-6 km bulk shear
34 kt
0-1 km storm-relative helicity
53 m²/s²
0-3 km storm-relative helicity
39 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.3

Open this sounding in Storm Lab

The text

As transmitted.

729 
WUUS51 KBOX 240100
SVRBOX
MAC001-007-240145-
/O.NEW.KBOX.SV.W.0078.160724T0100Z-160724T0145Z/

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

THE NATIONAL WEATHER SERVICE IN TAUNTON HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHWESTERN BARNSTABLE COUNTY IN SOUTHEASTERN MASSACHUSETTS...
  DUKES COUNTY IN SOUTHEASTERN MASSACHUSETTS...

* UNTIL 945 PM EDT

* AT 858 PM EDT...A STRONG THUNDERSTORM NEAR THE SOUTH COAST HAS
  SENT A GUST FRONT OUT AHEAD OF THE HEAVY RAIN.  SO LOCATIONS MAY
  SEE DAMAGING WIND GUSTS BEFORE THE RAIN ARRIVES.

  HAZARD...60 MPH WIND GUSTS. 

  SOURCE...RADAR INDICATED AND SPOTTER REPORTS OF DAMAGE IN NEW
           BEDFORD.

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

* LOCATIONS IMPACTED INCLUDE...
  FALMOUTH...OAK BLUFFS...EDGARTOWN...TISBURY...AQUINNAH...
  SANDWICH...BOURNE...MASHPEE...WEST TISBURY...CHILMARK AND GOSNOLD.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

LARGE HAIL AND DAMAGING WINDS AND 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 4132 7077 4141 7095 4139 7086 4145 7092
      4135 7078 4143 7070 4145 7084 4152 7070
      4151 7068 4150 7070 4146 7063 4171 7062
      4157 7046 4154 7062 4145 7060 4142 7045
      4135 7045 4134 7073 4125 7081
TIME...MOT...LOC 0058Z 320DEG 35KT 4143 7077 

HAIL...<.75IN
WIND...60MPH
 
$$

FRANK
1 follow-up statement
661 
WWUS51 KBOX 240142
SVSBOX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TAUNTON MA
942 PM EDT SAT JUL 23 2016

MAC001-007-240152-
/O.EXP.KBOX.SV.W.0078.000000T0000Z-160724T0145Z/
BARNSTABLE MA-DUKES MA-
942 PM EDT SAT JUL 23 2016

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHWESTERN BARNSTABLE AND
DUKES COUNTIES WILL EXPIRE AT 945 PM EDT...
        
THE STORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF THE AREA.
THEREFORE...THE WARNING WILL BE ALLOWED TO EXPIRE.

LAT...LON 4132 7077 4141 7095 4139 7086 4145 7092
      4135 7078 4143 7070 4145 7084 4152 7070
      4151 7068 4150 7070 4146 7063 4171 7062
      4157 7046 4154 7062 4145 7060 4142 7045
      4135 7045 4134 7073 4125 7081
TIME...MOT...LOC 0139Z 320DEG 35KT 4143 7077 

$$

MD

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 23, 8:03 PM EDTSpecial Weather StatementBOXHampden57 min
Jul 23, 8:18 PM EDTSpecial Weather StatementBOXBristol57 min
Jul 23, 8:23 PM EDTSpecial Marine WarningBOX52 min
Jul 23, 8:24 PM EDTSpecial Weather StatementBOXBristol36 min
Jul 23, 8:33 PM EDTSevere Thunderstorm WarningBOXBristol, Plymouth27 min
Jul 23, 8:45 PM EDTSpecial Marine WarningBOX45 min
Jul 23, 8:53 PM EDTSpecial Weather StatementBOXDukes37 min
Jul 23, 8:56 PM EDTSpecial Marine WarningBOX64 min
Jul 23, 9:44 PM EDTSpecial Marine WarningBOX91 min
Jul 23, 9:46 PM EDTSpecial Weather StatementBOXNantucket59 min
Jul 23, 10:17 PM EDTSpecial Marine WarningBOX58 min
Jul 24, 4:03 AM EDTHeat AdvisoryBOXBristol, Hampden, Hampshire, Middlesex, Norfolk, Worcester38 hr

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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.