Alert archive / Massachusetts / Severe Thunderstorm Warnings in 2016

Severe Thunderstorm Warning 71, NWS Boston/Norton, MA

July 23, 2016Essex County, Middlesex County, Suffolk County, Massachusetts

NWS Boston/Norton, MA issued this severe thunderstorm warning at Jul 23, 2016, 5:46 PM EDT for Essex County, Middlesex County, Suffolk County, Massachusetts. It was in force for 44 min. 15 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, 5:46 PM EDT (21:46 UTC)
Expired: Jul 23, 2016, 6:30 PM EDT
In force: 44 min
Issued by: NWS Boston/Norton, MA
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Essex County, MA, Middlesex County, MA, Suffolk County, MA

The radar

The Boston radar (KBOX), 50 km from the middle of the area, began a volume at 21:49 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 23, 5:52 PM EDT	TSTM WND DMG	Winchester, MA	WIRES DOWN ON IRVING STREET. TREE DOWN ON HOUSE ON SHEFFIELD ROAD. LARGE TREE BRANCH DOWN ON MADISON AVENUE AND CAMBRIDGE STREET. TREE DOWN ON MAIN STREET BY THE REC DEPT. AND ON GRANT STREET NEAR PINE. WIRES DOWN ON HIGHLAND AVENUE. TREE DOWN ON WIRES. LARGE
Jul 23, 5:52 PM EDT	TSTM WND DMG	Winchester, MA	WIRES DOWN ON IRVING STREET. TREE DOWN ON HOUSE ON SHEFFIELD ROAD. TREE DOWN ON MAIN STREET BY THE REC DEPT. AND ON GRANT STREET NEAR PINE.
Jul 23, 5:54 PM EDT	HAIL 0.88	Woburn, MA
Jul 23, 6:00 PM EDT	TSTM WND DMG	Arlington, MA	TREE DOWN ON A CAR ON HOWARD STREET. LARGE BRANCH DOWN ON WIRES ON DUDLEY STREET.
Jul 23, 6:00 PM EDT	TSTM WND DMG	Arlington, MA	SEVERAL BRANCHES AND TREES DOWN AT THE CORNER OF WASHINGTON AND ARNOLD.
Jul 23, 6:00 PM EDT	TSTM WND DMG	Malden, MA	WIRES DOWN ON HANOVER STREET. TREES AND WIRES DOWN IN SEVERAL LOCATIONS.
Jul 23, 6:00 PM EDT	TSTM WND DMG	Medford, MA	LARGE TREE LIMB DOWN.
Jul 23, 6:00 PM EDT	TSTM WND DMG	Melrose, MA	LARGE LIMBS DOWN ON WHITMAN...LIONEL...AND MIDDLE STREETS. TREE AND WIRES DOWN ON LIONEL AND MIDDLE STREETS.
Jul 23, 6:00 PM EDT	TSTM WND DMG	Winchester, MA	LARGE TREE DOWN ON BACON STREET.
Jul 23, 6:01 PM EDT	TSTM WND DMG	Arlington, MA	TREE BRANCH DOWN.
Jul 23, 6:01 PM EDT	HAIL 0.75	Arlington, MA
Jul 23, 6:05 PM EDT	TSTM WND DMG	Everett, MA	TREE DOWN ON AVON STREET.
Jul 23, 6:08 PM EDT	HAIL 0.75	Revere, MA
Jul 23, 6:10 PM EDT	TSTM WND DMG	Revere, MA	TENT BLOWN OVER ON REVERE BEACH. TREE AND POWER LINES DOWN ON ENDICOTT AVENUE AND ON CARUSO STREET. WIRES DOWN ON VINYL STREET.
Jul 23, 6:10 PM EDT	TSTM WND DMG	Revere, MA	TREE AND POWER LINES DOWN ON ENDICOTT AVENUE AND ON CARUSO STREET. WIRES DOWN ON VINYL STREET.

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, 9.8 hours before the alert went out and 116 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: 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.

859 
WUUS51 KBOX 232146
SVRBOX
MAC009-017-025-232230-
/O.NEW.KBOX.SV.W.0071.160723T2146Z-160723T2230Z/

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

THE NATIONAL WEATHER SERVICE IN TAUNTON HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTH CENTRAL ESSEX COUNTY IN NORTHEASTERN MASSACHUSETTS...
  CENTRAL SUFFOLK COUNTY IN EASTERN MASSACHUSETTS...
  EAST CENTRAL MIDDLESEX COUNTY IN NORTHEASTERN MASSACHUSETTS...

* UNTIL 630 PM EDT

* AT 546 PM EDT...A SEVERE THUNDERSTORM WAS LOCATED OVER
  WINCHESTER... OR OVER WOBURN...MOVING EAST AT 20 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...CAMBRIDGE...LYNN...NEWTON...SOMERVILLE...WALTHAM...
  MALDEN...BROOKLINE...MEDFORD...REVERE...PEABODY...ARLINGTON...
  EVERETT...SALEM...BILLERICA...WOBURN...CHELSEA...WATERTOWN...
  LEXINGTON AND TEWKSBURY.

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 4250 7085 4246 7089 4246 7094 4242 7091
      4242 7094 4241 7099 4237 7097 4234 7087
      4233 7089 4236 7096 4233 7093 4238 7101
      4232 7093 4232 7100 4231 7102 4233 7103
      4231 7105 4240 7131 4258 7121
TIME...MOT...LOC 2146Z 290DEG 17KT 4246 7117 

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

FRANK

2 follow-up statements

537 
WWUS51 KBOX 232206
SVSBOX

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

MAC009-017-025-232230-
/O.CON.KBOX.SV.W.0071.000000T0000Z-160723T2230Z/
ESSEX MA-SUFFOLK MA-MIDDLESEX MA-
606 PM EDT SAT JUL 23 2016

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 630 PM EDT
FOR SOUTH CENTRAL ESSEX...CENTRAL SUFFOLK AND EAST CENTRAL MIDDLESEX
COUNTIES...

AT 605 PM EDT...A SEVERE THUNDERSTORM WAS LOCATED OVER
MALDEN...MOVING EAST AT 20 MPH.

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

SOURCE...TRAINED WEATHER SPOTTERS. 

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

LOCATIONS IMPACTED INCLUDE...
BOSTON...CAMBRIDGE...LYNN...NEWTON...SOMERVILLE...MALDEN...
BROOKLINE...MEDFORD...REVERE...PEABODY...ARLINGTON...EVERETT...
SALEM...WOBURN...CHELSEA...WATERTOWN...MELROSE...SAUGUS...
WAKEFIELD AND READING.

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 4250 7085 4246 7089 4246 7094 4242 7091
      4242 7094 4241 7099 4237 7097 4234 7087
      4233 7089 4236 7096 4233 7093 4238 7101
      4232 7093 4232 7100 4231 7102 4233 7103
      4231 7105 4236 7121 4255 7107
TIME...MOT...LOC 2205Z 290DEG 17KT 4243 7105 

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

FRANK

726 
WWUS51 KBOX 232224
SVSBOX

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

MAC009-017-025-232234-
/O.EXP.KBOX.SV.W.0071.000000T0000Z-160723T2230Z/
ESSEX MA-SUFFOLK MA-MIDDLESEX MA-
624 PM EDT SAT JUL 23 2016

...THE SEVERE THUNDERSTORM WARNING FOR SOUTH CENTRAL ESSEX...CENTRAL
SUFFOLK AND EAST CENTRAL MIDDLESEX COUNTIES WILL EXPIRE AT 630 PM
EDT...
        
THE STORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF THE AREA.
THEREFORE...THE WARNING WILL BE ALLOWED TO EXPIRE.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 1000 PM EDT FOR
EASTERN AND NORTHEASTERN MASSACHUSETTS.

LAT...LON 4250 7085 4246 7089 4246 7094 4242 7091
      4242 7094 4241 7099 4237 7097 4234 7087
      4233 7089 4236 7096 4233 7093 4238 7101
      4232 7093 4232 7100 4231 7102 4233 7103
      4231 7105 4236 7121 4255 7107
TIME...MOT...LOC 2222Z 290DEG 17KT 4243 7105 

$$

FRANK

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 22, 8:15 PM EDT	Special Marine Warning	BOX		90 min
Jul 22, 8:25 PM EDT	Severe Thunderstorm Warning	BOX	Bristol, Norfolk	65 min
Jul 22, 8:31 PM EDT	Severe Thunderstorm Warning	BOX	Middlesex, Norfolk, Plymouth, Suffolk	59 min
Jul 22, 8:44 PM EDT	Special Marine Warning	BOX		61 min
Jul 22, 8:44 PM EDT	Severe Thunderstorm Warning	BOX	Bristol	46 min
Jul 22, 8:49 PM EDT	Severe Thunderstorm Warning	BOX	Bristol, Plymouth	56 min
Jul 22, 8:53 PM EDT	Special Marine Warning	BOX		52 min
Jul 22, 9:04 PM EDT	Severe Thunderstorm Warning	BOX	Plymouth	41 min
Jul 22, 9:27 PM EDT	Special Weather Statement	BOX	Bristol	48 min
Jul 22, 9:40 PM EDT	Severe Thunderstorm Warning	BOX	Barnstable, Plymouth	35 min
Jul 22, 9:42 PM EDT	Special Marine Warning	BOX		48 min
Jul 22, 10:05 PM EDT	Severe Thunderstorm Warning	BOX	Barnstable	40 min
Jul 22, 10:09 PM EDT	Special Marine Warning	BOX		66 min
Jul 22, 10:15 PM EDT	Special Marine Warning	BOX		60 min
Jul 22, 10:25 PM EDT	Severe Thunderstorm Warning	BOX	Bristol	65 min
Jul 22, 10:40 PM EDT	Special Marine Warning	BOX		65 min
Jul 22, 10:46 PM EDT	Special Marine Warning	BOX		59 min
Jul 22, 11:06 PM EDT	Severe Thunderstorm Warning	BOX	Bristol	54 min
Jul 22, 11:14 PM EDT	Severe Thunderstorm Warning	BOX	Barnstable	46 min
Jul 22, 11:37 PM EDT	Special Marine Warning	BOX		83 min
Jul 22, 11:39 PM EDT	Special Marine Warning	BOX		66 min
Jul 22, 11:55 PM EDT	Severe Thunderstorm Warning	BOX	Barnstable, Bristol, Dukes, Plymouth	50 min
Jul 23, 12:46 AM EDT	Severe Thunderstorm Warning	BOX	Dukes, Nantucket	44 min
Jul 23, 1:10 AM EDT	Special Weather Statement	BOX	Bristol	50 min
Jul 23, 1:41 AM EDT	Special Weather Statement	BOX	Barnstable, Dukes, Nantucket	94 min
Jul 23, 5:36 PM EDT	Special Weather Statement	BOX	Suffolk	39 min
Jul 23, 5:43 PM EDT	Special Weather Statement	BOX	Suffolk	32 min
Jul 23, 5:52 PM EDT	Special Marine Warning	BOX		38 min
Jul 23, 6:01 PM EDT	Special Weather Statement	BOX	Norfolk	44 min
Jul 23, 6:22 PM EDT	Special Marine Warning	BOX		38 min
Jul 23, 6:27 PM EDT	Special Weather Statement	BOX	Suffolk	48 min
Jul 23, 6:38 PM EDT	Severe Thunderstorm Warning	BOX	Essex, Middlesex, Worcester	52 min
Jul 23, 6:46 PM EDT	Special Marine Warning	BOX		119 min
Jul 23, 6:52 PM EDT	Severe Thunderstorm Warning	BOX	Franklin	38 min
Jul 23, 7:06 PM EDT	Severe Thunderstorm Warning	BOX	Essex, Middlesex, Norfolk, Suffolk, Worcester	54 min
Jul 23, 7:15 PM EDT	Severe Thunderstorm Warning	BOX	Franklin, Hampden, Hampshire, Worcester	60 min
Jul 23, 7:29 PM EDT	Severe Thunderstorm Warning	BOX	Essex, Middlesex, Worcester	31 min
Jul 23, 7:35 PM EDT	Special Marine Warning	BOX		55 min
Jul 23, 7:46 PM EDT	Special Marine Warning	BOX		59 min
Jul 23, 7:50 PM EDT	Special Weather Statement	BOX	Bristol	40 min
Jul 23, 7:53 PM EDT	Special Marine Warning	BOX		67 min
Jul 23, 7:54 PM EDT	Special Weather Statement	BOX	Bristol, Norfolk	51 min
Jul 23, 7:57 PM EDT	Special Weather Statement	BOX	Bristol, Norfolk	48 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.