Alert archive / Massachusetts / Special Weather Statements in 2011

Special Weather Statement, NWS Boston/Norton, MA

June 9, 2011Franklin County, Massachusetts

NWS Boston/Norton, MA issued this special weather statement at Jun 9, 2011, 9:13 PM EDT for Franklin County, Massachusetts. It was in force for 47 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
Jun 9, 2011, 9:13 PM EDT (01:13 UTC)
Expired
Jun 9, 2011, 10:00 PM EDT
In force
47 min
Issued by
NWS Boston/Norton, MA

County Franklin County, MA

The radar

The Boston radar (KBOX), 128 km from the middle of the area, began a volume at 01:13 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

Albany, NY (KALY), launched 00:00Z, 1.2 hours before the alert went out and 118 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, Albany, NY at 00:00Z on 2011-06-10Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 928 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, Albany, NY at 00:00Z on 2011-06-10The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 72 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
928 J/kg
Mixed-layer CIN
-84 J/kg
Mixed-layer LCL
1058 m above ground
0-6 km bulk shear
47 kt
0-1 km storm-relative helicity
72 m²/s²
0-3 km storm-relative helicity
120 m²/s²
Significant tornado parameter
0.2
Supercell composite
2.8

Open this sounding in Storm Lab

The text

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

498 
WWUS81 KBOX 100113
SPSBOX

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE TAUNTON MA
913 PM EDT THU JUN 9 2011

MAZ002-003-100200-
EASTERN FRANKLIN MA-WESTERN FRANKLIN MA-
913 PM EDT THU JUN 9 2011

AT 908 PM EDT NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A 
STRONG THUNDERSTORM WITH THE POTENTIAL OF PRODUCING WINDS IN EXCESS 
OF 40 MPH...SMALL HAIL UP TO HALF INCH SIZE...AND FREQUENT LIGHTNING 
6 MILES NORTH OF LEYDEN...OR ABOUT 7 MILES SOUTHWEST OF 
BRATTLEBORO...MOVING SOUTHEAST AT 25 MPH.

* SOME LOCATIONS AFFECTED INCLUDE...COLRAIN...LEYDEN...BERNARDSTON...
  GREENFIELD...NORTHFIELD...GILL...MONTAGUE...WARWICK...ERVING...
  WENDELL AND ORANGE.

FOR YOUR SAFETY...GET INSIDE WHEN THIS STORM APPROACHES. WINDS MAY BE
STRONG ENOUGH TO BRING DOWN SMALL BRANCHES. MINOR STREET FLOODING AND
PONDING OF WATER IN POOR DRAINAGE AREAS IS ALSO POSSIBLE.

&&

LAT...LON 4274 7271 4272 7228 4268 7227 4266 7223
      4262 7223 4261 7225 4260 7227 4258 7226
      4258 7228 4255 7227 4250 7252 4274 7278

$$

SIPPRELL

Nearby

Special Weather Statements in Massachusetts, 2011Every special weather statement in 2011

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.