Alert archive / Massachusetts / Severe Thunderstorm Warnings in 2016

Severe Thunderstorm Warning 29, NWS Boston/Norton, MA

July 15, 2016Barnstable County, Massachusetts

NWS Boston/Norton, MA issued this severe thunderstorm warning at Jul 15, 2016, 3:28 PM EDT for Barnstable County, Massachusetts. It was in force for 47 min. 1 report 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 15, 2016, 3:28 PM EDT (19:28 UTC)
Expired: Jul 15, 2016, 4:15 PM EDT
In force: 47 min
Issued by: NWS Boston/Norton, MA
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

County Barnstable County, MA

The radar

The Boston radar (KBOX), 84 km from the middle of the area, began a volume at 19:29 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 15, 3:35 PM EDT	TSTM WND GST 63	3 Nw Provincetown, 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, 7.5 hours before the alert went out and 42 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: 214 J/kg
Mixed-layer CIN: -124 J/kg
Mixed-layer LCL: 1318 m above ground
0-6 km bulk shear: 21 kt
0-1 km storm-relative helicity: 42 m²/s²
0-3 km storm-relative helicity: 110 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.2

Open this sounding in Storm Lab

The text

As transmitted.

272 
WUUS51 KBOX 151928
SVRBOX
MAC001-152015-
/O.NEW.KBOX.SV.W.0029.160715T1928Z-160715T2015Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TAUNTON MA
328 PM EDT FRI JUL 15 2016

THE NATIONAL WEATHER SERVICE IN TAUNTON HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHEASTERN BARNSTABLE COUNTY IN SOUTHEASTERN MASSACHUSETTS...

* UNTIL 415 PM EDT

* AT 328 PM EDT...A SEVERE THUNDERSTORM WAS LOCATED NEAR
  PROVINCETOWN... 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...
  PROVINCETOWN AND TRURO. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4198 7008 4202 7009 4206 7013 4206 7017
      4204 7019 4202 7019 4207 7024 4208 7022
      4207 7012 4203 7005 4198 7001
TIME...MOT...LOC 1928Z 247DEG 14KT 4205 7026 

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

FRANK

2 follow-up statements

789 
WWUS51 KBOX 151942
SVSBOX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TAUNTON MA
342 PM EDT FRI JUL 15 2016

MAC001-152015-
/O.CON.KBOX.SV.W.0029.000000T0000Z-160715T2015Z/
BARNSTABLE MA-
342 PM EDT FRI JUL 15 2016

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 415 PM EDT
FOR NORTHEASTERN BARNSTABLE COUNTY...

AT 341 PM EDT...A SEVERE THUNDERSTORM WAS LOCATED OVER
PROVINCETOWN... MOVING NORTHEAST AT 15 MPH.  

HAZARD...65 MPH WIND GUSTS AND PENNY SIZE HAIL. 

SOURCE...THIS IS A VERY DANGEROUS STORM.  PROVINCETOWN JUST HAD AN
         OFFICIAL WIND GUSTS TO 63 MPH!  TAKE SHELTER IMMEDIATELY.

IMPACT...EXPECT CONSIDERABLE TREE DAMAGE. DAMAGE IS LIKELY TO MOBILE
         HOMES...ROOFS...AND OUTBUILDINGS. 

LOCATIONS IMPACTED INCLUDE...
PROVINCETOWN AND TRURO. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4198 7008 4202 7009 4206 7013 4206 7017
      4204 7019 4202 7019 4207 7024 4208 7022
      4207 7012 4203 7005 4198 7001
TIME...MOT...LOC 1941Z 247DEG 14KT 4207 7020 

HAIL...0.75IN
WIND...70MPH
 
$$

FRANK

412 
WWUS51 KBOX 152007
SVSBOX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TAUNTON MA
407 PM EDT FRI JUL 15 2016

MAC001-152017-
/O.EXP.KBOX.SV.W.0029.000000T0000Z-160715T2015Z/
BARNSTABLE MA-
407 PM EDT FRI JUL 15 2016

...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN BARNSTABLE COUNTY
WILL EXPIRE AT 415 PM EDT...
        
THE STORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF THE AREA.
THEREFORE...THE WARNING WILL BE ALLOWED TO EXPIRE.

LAT...LON 4198 7008 4202 7009 4206 7013 4206 7017
      4204 7019 4202 7019 4207 7024 4208 7022
      4207 7012 4203 7005 4198 7001
TIME...MOT...LOC 2005Z 247DEG 14KT 4207 7020 

$$

FRANK

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 15, 4:11 AM EDT	Dense Fog Advisory	BOX	Barnstable, Bristol, Norfolk, Plymouth	5 hr
Jul 15, 2:02 PM EDT	Special Weather Statement	BOX	Plymouth	43 min
Jul 15, 2:11 PM EDT	Severe Thunderstorm Warning	BOX	Bristol	49 min
Jul 15, 2:12 PM EDT	Special Marine Warning	BOX		48 min
Jul 15, 2:18 PM EDT	Special Weather Statement	BOX	Plymouth	42 min
Jul 15, 2:34 PM EDT	Areal Flood Advisory	BOX	Bristol	56 min
Jul 15, 2:34 PM EDT	Special Weather Statement	BOX	Plymouth	41 min
Jul 15, 2:36 PM EDT	Special Marine Warning	BOX		54 min
Jul 15, 2:54 PM EDT	Special Marine Warning	BOX		51 min
Jul 15, 2:58 PM EDT	Severe Thunderstorm Warning	BOX	Bristol	28 min
Jul 15, 3:06 PM EDT	Special Marine Warning	BOX		54 min
Jul 15, 3:08 PM EDT	Special Weather Statement	BOX	Plymouth	52 min
Jul 15, 3:13 PM EDT	Special Weather Statement	BOX	Barnstable	47 min
Jul 15, 3:34 PM EDT	Severe Thunderstorm Warning	BOX	Plymouth	23 min
Jul 15, 3:50 PM EDT	Special Marine Warning	BOX		55 min
Jul 15, 4:17 PM EDT	Special Marine Warning	BOX		43 min
Jul 15, 4:54 PM EDT	Special Weather Statement	BOX	Franklin	51 min
Jul 15, 7:31 PM EDT	Special Weather Statement	BOX	Franklin	44 min
Jul 15, 7:55 PM EDT	Severe Thunderstorm Warning	BOX	Franklin, Hampden, Hampshire	22 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.