Alert archive / Massachusetts / Special Weather Statements in 2014

Special Weather Statement, NWS Boston/Norton, MA

June 18, 20147 counties in Massachusetts; Bristol County, Kent County, Providence County, Rhode Island; Hillsborough County, New Hampshire

NWS Boston/Norton, MA issued this special weather statement at Jun 18, 2014, 2:07 AM EDT for 7 counties in Massachusetts; Bristol County, Kent County, Providence County, Rhode Island; Hillsborough County, New Hampshire. It was in force for 3 hr. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued
Jun 18, 2014, 2:07 AM EDT (06:07 UTC)
Expired
Jun 18, 2014, 5:00 AM EDT
In force
3 hr
Issued by
NWS Boston/Norton, MA

Counties Bristol County, MA, Essex County, MA, Hampden County, MA, Middlesex County, MA, Norfolk County, MA, Suffolk County, MA, Worcester County, MA, Hillsborough County, NH, Bristol County, RI, Kent County, RI, Providence County, RI

The radar

The Boston radar (KBOX), 45 km from the middle of the area, began a volume at 06:10 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 00:00Z, 6.1 hours before the alert went out and 143 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 2014-06-18Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 24 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 2014-06-18The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 147 square meters per square second.193958Sfc1 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
24 J/kg
Mixed-layer CIN
-108 J/kg
Mixed-layer LCL
512 m above ground
0-6 km bulk shear
39 kt
0-1 km storm-relative helicity
147 m²/s²
0-3 km storm-relative helicity
124 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.1

Open this sounding in Storm Lab

The text

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

092 
WWUS81 KBOX 180607
SPSBOX

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE TAUNTON MA
207 AM EDT WED JUN 18 2014
 
CTZ002>004-MAZ003>007-010>020-026-NHZ011-012-015-RIZ001>007-180900-
WINDHAM-TOLLAND-HARTFORD-SUFFOLK-SOUTHERN BRISTOL-EASTERN
NORFOLK-EASTERN HAMPDEN-WESTERN PLYMOUTH-WESTERN NORFOLK-EASTERN
ESSEX-EASTERN HAMPSHIRE-WESTERN ESSEX-NORTHWEST MIDDLESEX
COUNTY-NORTHERN WORCESTER-CENTRAL MIDDLESEX COUNTY-SOUTHERN
WORCESTER-EASTERN PLYMOUTH-EASTERN FRANKLIN-NORTHERN
BRISTOL-SOUTHEAST MIDDLESEX-CHESHIRE-EASTERN HILLSBOROUGH-WESTERN AND
CENTRAL HILLSBOROUGH-WESTERN KENT-NORTHWEST PROVIDENCE-EASTERN
KENT-SOUTHEAST PROVIDENCE-NEWPORT-WASHINGTON-BRISTOL-
207 AM EDT WED JUN 18 2014

AT 2 AM...SHOWERS AND STRONG THUNDERSTORMS WERE MOVING ACROSS 
SOUTHERN NEW HAMPSHIRE...WESTERN MASSACHUSETTS...AND NORTHWEST 
CONNECTICUT. LOCALLY DAMAGING WIND GUSTS HAVE BEEN REPORTED.
THE STORMS WILL BE MOVING EASTWARD ACROSS MUCH OF THE REST OF 
SOUTHERN NEW HAMPSHIRE...CENTRAL AND EASTERN MASSACHUSETTS...
NORTHERN CONNECTICUT...AND RHODE ISLAND DURING THE OVERNIGHT HOURS.

ALTHOUGH THE STORMS SHOULD BE SLOWLY WEAKENING...BRIEF HEAVY 
DOWNPOURS...DANGEROUS CLOUD TO GROUND LIGHTNING...AND LOCAL WIND 
GUSTS TO 50 MPH CAN BE EXPECTED.

&&

LAT...LON 4215 7282 4315 7188 4277 7135 4266 7059
      4239 7107 4221 7074 4152 7109 4151 7106
      4152 7134 4179 7137 4151 7134 4131 7185
      4131 7189 4134 7183 4142 7180 4164 7179
      4171 7224 4156 7295
TIME...MOT...LOC 0602Z 296DEG 45KT 4222 7274 4186 7304 

$$
FIELD

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 18, 12:58 AM EDTSevere Thunderstorm WarningBOXFranklin, Hampden, Hampshire62 min
Jun 18, 1:29 AM EDTSpecial Weather StatementBOXHampden61 min
Jun 18, 1:56 AM EDTSevere Thunderstorm WarningBOXHampden, Hampshire49 min
Jun 18, 3:33 AM EDTSpecial Weather StatementBOXPlymouth27 min
Jun 18, 4:02 AM EDTSpecial Marine WarningBOX28 min

Nearby

Special Weather Statements in Massachusetts, 2014Special Weather Statements in Rhode Island, 2014Special Weather Statements in Connecticut, 2014Every 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.