Alert archive / Massachusetts / Severe Thunderstorm Warnings in 2017

Severe Thunderstorm Warning 21, NWS Boston/Norton, MA

June 13, 2017Plymouth County, Massachusetts

NWS Boston/Norton, MA issued this severe thunderstorm warning at Jun 13, 2017, 6:25 PM EDT for Plymouth County, Massachusetts. It was in force for 35 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: Jun 13, 2017, 6:25 PM EDT (22:25 UTC)
Expired: Jun 13, 2017, 7:00 PM EDT
In force: 35 min
Issued by: NWS Boston/Norton, MA
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

County Plymouth County, MA

The radar

The Boston radar (KBOX), 40 km from the middle of the area, began a volume at 22:28 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
Jun 13, 6:30 PM EDT	TSTM WND DMG	Scituate, MA	LARGE TREE LIMB DOWN ON WIRES ON CURTIS STREET
Jun 13, 6:30 PM EDT	TSTM WND DMG	Scituate, MA	TREE AND WIRES DOWN ON COUNTRY WAY BY ARBOR WAY
Jun 13, 6:38 PM EDT	TSTM WND DMG	Marshfield, MA	TREE DOWN ON FERRY 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, 10.4 hours before the alert went out and 82 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 2064 m above ground
0-6 km bulk shear: 23 kt
0-1 km storm-relative helicity: 39 m²/s²
0-3 km storm-relative helicity: 41 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

592 
WUUS51 KBOX 132225
SVRBOX
MAC023-132300-
/O.NEW.KBOX.SV.W.0021.170613T2225Z-170613T2300Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Taunton MA
625 PM EDT TUE JUN 13 2017

The National Weather Service in Taunton has issued a

* Severe Thunderstorm Warning for...
  Northeastern Plymouth County in southeastern Massachusetts...

* Until 700 PM EDT

* At 625 PM EDT, a severe thunderstorm was located over Scituate, or
  near Marshfield, moving southeast at 45 mph.

  HAZARD...60 mph wind gusts and quarter size hail. 

  SOURCE...Radar indicated. 

  IMPACT...Hail damage to vehicles is possible. Expect damage to 
           trees and power lines. 

* Locations impacted include...
  Marshfield, Scituate, Duxbury, Norwell and Cohasset. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

&&

LAT...LON 4219 7084 4226 7076 4209 7051 4201 7066
TIME...MOT...LOC 2225Z 307DEG 40KT 4218 7072 

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

KJC

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 13, 7:56 AM EDT	Heat Advisory	BOX	Bristol, Essex, Hampden, Hampshire, Middlesex, Norfolk and 3 more	10 hr
Jun 13, 4:15 PM EDT	Special Weather Statement	BOX	Essex	45 min
Jun 13, 4:26 PM EDT	Severe Thunderstorm Warning	BOX	Essex	14 min
Jun 13, 4:28 PM EDT	Special Marine Warning	BOX		62 min
Jun 13, 4:47 PM EDT	Special Weather Statement	BOX	Suffolk	28 min
Jun 13, 5:05 PM EDT	Severe Thunderstorm Warning	BOX	Middlesex, Suffolk	25 min
Jun 13, 5:12 PM EDT	Special Marine Warning	BOX		48 min
Jun 13, 5:24 PM EDT	Special Marine Warning	BOX		66 min
Jun 13, 5:37 PM EDT	Severe Thunderstorm Warning	BOX	Plymouth	38 min
Jun 13, 5:46 PM EDT	Special Marine Warning	BOX		44 min
Jun 13, 5:55 PM EDT	Severe Thunderstorm Warning	BOX	Norfolk, Plymouth, Suffolk	35 min
Jun 13, 6:23 PM EDT	Special Marine Warning	BOX		67 min
Jun 13, 6:33 PM EDT	Special Marine Warning	BOX		42 min
Jun 13, 6:44 PM EDT	Special Weather Statement	BOX	Plymouth	31 min
Jun 13, 6:59 PM EDT	Special Marine Warning	BOX		61 min
Jun 13, 7:26 PM EDT	Special Weather Statement	BOX	Barnstable	64 min
Jun 13, 7:53 PM EDT	Special Marine Warning	BOX		67 min

Nearby

Severe Thunderstorm Warnings in Massachusetts, 2017 Every severe thunderstorm warning in 2017

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.