Alert archive / Massachusetts / Special Weather Statements in 2014

Special Weather Statement, NWS Boston/Norton, MA

August 6, 2014Bristol County, Massachusetts

NWS Boston/Norton, MA issued this special weather statement at Aug 6, 2014, 4:11 PM EDT for Bristol County, Massachusetts. It was in force for 49 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: Aug 6, 2014, 4:11 PM EDT (20:11 UTC)
Expired: Aug 6, 2014, 5:00 PM EDT
In force: 49 min
Issued by: NWS Boston/Norton, MA

County Bristol County, MA

The radar

The Boston radar (KBOX), 44 km from the middle of the area, began a volume at 20:10 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 12:00Z, 8.2 hours before the alert went out and 63 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: 296 J/kg
Mixed-layer CIN: -69 J/kg
Mixed-layer LCL: 1032 m above ground
0-6 km bulk shear: 40 kt
0-1 km storm-relative helicity: 12 m²/s²
0-3 km storm-relative helicity: 60 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.3

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

579 
WWUS81 KBOX 062011
SPSBOX

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE TAUNTON MA
411 PM EDT WED AUG 6 2014
 
MAZ017>022-062100-
EASTERN PLYMOUTH-BARNSTABLE-NORTHERN BRISTOL-SOUTHERN BRISTOL-WESTERN
PLYMOUTH-SOUTHERN PLYMOUTH-
411 PM EDT WED AUG 6 2014

...STRONG THUNDERSTORM IN SOUTHERN PLYMOUTH...EAST CENTRAL BRISTOL
AND SOUTHWESTERN BARNSTABLE COUNTIES...

AT 411 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING A
STRONG THUNDERSTORM OVER FREETOWN...OR NEAR FALL RIVER...MOVING EAST
AT 20 MPH.

HAIL UP TO THE SIZE OF PEAS AND WIND GUSTS UP TO 40 MPH CAN BE
EXPECTED WITH THIS STORM.

LOCATIONS IMPACTED INCLUDE...
NEW BEDFORD...FALL RIVER...PLYMOUTH...TAUNTON...DARTMOUTH...
FALMOUTH...MARION...MIDDLEBOROUGH...WAREHAM...SANDWICH...BOURNE...
SOMERSET...FAIRHAVEN...SWANSEA...MASHPEE...CARVER...LAKEVILLE...
ACUSHNET...FREETOWN AND DIGHTON.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

GET INDOORS WHEN THIS STORM APPROACHES. WINDS MAY BE STRONG ENOUGH TO
PRODUCE MINOR DAMAGE...SUCH AS DOWNED BRANCHES. MINOR URBAN AND POOR
DRAINAGE FLOODING IS ALSO POSSIBLE.

&&

LAT...LON 4167 7065 4168 7062 4170 7067 4170 7062
      4175 7063 4171 7065 4174 7071 4164 7077
      4164 7087 4159 7082 4165 7092 4162 7091
      4173 7121 4184 7110 4195 7063 4193 7054
      4182 7054 4176 7048 4155 7055 4152 7065
TIME...MOT...LOC 2011Z 273DEG 19KT 4177 7106 

$$

FRANK

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 5, 8:19 PM EDT	Special Weather Statement	BOX	Franklin	41 min
Aug 5, 8:23 PM EDT	Special Weather Statement	BOX	Hampshire	37 min
Aug 5, 8:31 PM EDT	Areal Flood Advisory	BOX	Franklin	119 min
Aug 5, 9:07 PM EDT	Special Weather Statement	BOX	Worcester	38 min
Aug 5, 9:57 PM EDT	Areal Flood Advisory	BOX	Franklin, Hampshire, Worcester	2 hr
Aug 6, 12:46 PM EDT	Special Weather Statement	BOX	Norfolk	44 min
Aug 6, 2:38 PM EDT	Special Weather Statement	BOX	Plymouth	52 min
Aug 6, 2:48 PM EDT	Special Weather Statement	BOX	Norfolk	42 min
Aug 6, 2:52 PM EDT	Special Marine Warning	BOX		38 min
Aug 6, 3:00 PM EDT	Special Weather Statement	BOX	Barnstable	45 min
Aug 6, 3:32 PM EDT	Special Weather Statement	BOX	Barnstable	43 min
Aug 6, 3:33 PM EDT	Special Weather Statement	BOX	Plymouth	42 min
Aug 6, 3:51 PM EDT	Special Marine Warning	BOX		39 min
Aug 6, 3:53 PM EDT	Special Weather Statement	BOX	Bristol	52 min
Aug 6, 4:14 PM EDT	Special Marine Warning	BOX		61 min
Aug 6, 4:15 PM EDT	Areal Flood Advisory	BOX	Bristol, Plymouth	2 hr
Aug 6, 4:16 PM EDT	Severe Thunderstorm Warning	BOX	Barnstable, Bristol, Plymouth	44 min
Aug 6, 4:48 PM EDT	Areal Flood Advisory	BOX	Barnstable, Plymouth	117 min
Aug 6, 5:01 PM EDT	Special Weather Statement	BOX	Barnstable	44 min
Aug 6, 5:13 PM EDT	Areal Flood Advisory	BOX	Barnstable	2 hr

Nearby

Special Weather Statements in Massachusetts, 2014 Every special weather statement in 2014

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.