Alert archive / Massachusetts / Special Weather Statements in 2012

Special Weather Statement, NWS Boston/Norton, MA

May 16, 2012Franklin County, Massachusetts

NWS Boston/Norton, MA issued this special weather statement at May 16, 2012, 7:45 PM EDT for Franklin County, Massachusetts. It was in force for 45 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: May 16, 2012, 7:45 PM EDT (23:45 UTC)
Expired: May 16, 2012, 8:30 PM EDT
In force: 45 min
Issued by: NWS Boston/Norton, MA

County Franklin County, MA

The radar

The Albany radar (KENX), 133 km from the middle of the area, began a volume at 23:45 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 12:00Z, 11.8 hours before the alert went out and 113 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: 304 J/kg
Mixed-layer CIN: -26 J/kg
Mixed-layer LCL: 484 m above ground
0-6 km bulk shear: 32 kt
0-1 km storm-relative helicity: 16 m²/s²
0-3 km storm-relative helicity: 56 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.

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What forecasters said that day

The local office's own words before this special weather statement went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Boston/Norton, MA wrote its last area forecast discussion before this special weather statement went out at May 16, 6:50 PM EDT, 55 minutes earlier.

Area forecast discussion, May 16, 6:50 PM EDT, 55 minutes before

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Hazardous weather outlook, May 16, 1:23 PM EDT, 6 hours 22 minutes before

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In the hours before

Special weather statement, May 16, 7:08 PM EDT, 37 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE TAUNTON MA
708 PM EDT WED MAY 16 2012

NHZ011-170000-
CHESHIRE NH-
708 PM EDT WED MAY 16 2012

AT 705 PM EDT NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STRONG THUNDERSTORM CAPABLE OF PRODUCING PENNY SIZED HAIL AND WIND
GUSTS TO 50 MPH CENTERED 8 MILES NORTHWEST OF WALPOLE...OR ABOUT 5
MILES NORTHWEST OF BELLOWS FALLS...MOVING EAST AT 35 MPH.

* SOME LOCATIONS AFFECTED INCLUDE...WALPOLE...ALSTEAD...SURRY...
  GILSUM...MARLOW AND STODDARD.

THIS STORM WAS PRODUCING FREQUENT CLOUD TO GROUND LIGHTNING. GET
INDOORS OR INSIDE A VEHICLE NOW! IF YOU ARE CAUGHT OUTSIDE...STAY
AWAY FROM ISOLATED TALL OBJECTS SUCH AS TREES. AVOID OPEN AREAS SUCH
AS GOLF COURSES AND BALL FIELDS.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 900 PM EDT
WEDNESDAY EVENING FOR NORTHERN CONNECTICUT AND WESTERN MASSACHUSETTS
AND SOUTHERN NEW HAMPSHIRE.

&&

LAT...LON 4319 7216 4314 7217 4313 7204 4302 7206
      4303 7247 4306 7247 4308 7245 4311 7244
      4314 7246 4316 7246 4316 7243 4314 7242
      4314 7238 4316 7238

NMB

Local storm report, May 16, 7:39 PM EDT, 6 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TAUNTON MA
739 PM EDT WED MAY 16 2012

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0723 PM     HAIL             MONROE                  42.72N  72.95W
05/16/2012  E0.75 INCH       FRANKLIN           MA   AMATEUR RADIO

&&

FMN

Special weather statement, May 16, 7:45 PM EDT, 0 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE TAUNTON MA
745 PM EDT WED MAY 16 2012

MAZ002>004-NHZ011-170030-
CHESHIRE NH-EASTERN FRANKLIN MA-NORTHERN WORCESTER MA-WESTERN
FRANKLIN MA-
745 PM EDT WED MAY 16 2012

AT 744 PM EDT NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STRONG THUNDERSTORM CAPABLE OF PRODUCING PENNY SIZED HAIL AND WIND
GUSTS TO 40 MPH OVER LEYDEN...OR ABOUT 9 MILES NORTH OF
GREENFIELD...MOVING EAST AT 35 MPH.

* SOME LOCATIONS AFFECTED INCLUDE...LEYDEN...GREENFIELD...
  BERNARDSTON...GILL...HINSDALE...NORTHFIELD...ERVING...WINCHESTER...
  WARWICK...ORANGE...RICHMOND...ATHOL...ROYALSTON...FITZWILLIAM...
  RINDGE...WINCHENDON...TEMPLETON AND PHILLIPSTON.

THIS STORM WAS PRODUCING FREQUENT CLOUD TO GROUND LIGHTNING. GET
INDOORS OR INSIDE A VEHICLE NOW! IF YOU ARE CAUGHT OUTSIDE...STAY
AWAY FROM ISOLATED TALL OBJECTS SUCH AS TREES. AVOID OPEN AREAS SUCH
AS GOLF COURSES AND BALL FIELDS.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 900 PM EDT
WEDNESDAY EVENING FOR NORTHERN CONNECTICUT AND WESTERN MASSACHUSETTS
AND SOUTHERN NEW HAMPSHIRE.

&&

LAT...LON 4274 7277 4273 7246 4277 7250 4276 7252
      4278 7252 4280 7254 4283 7255 4281 7198
      4279 7197 4252 7200 4259 7280

NMB

The office that day

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

Issued	Product	Office	Counties	Lasted
May 16, 1:55 AM EDT	Special Marine Warning	BOX		65 min
May 16, 3:04 AM EDT	Special Marine Warning	BOX		56 min
May 16, 7:01 PM EDT	Severe Thunderstorm Warning	BOX	Franklin	44 min
May 16, 7:08 PM EDT	Special Weather Statement	BOX	Cheshire	52 min
May 16, 7:51 PM EDT	Special Weather Statement	BOX	Cheshire	39 min

Nearby

Special Weather Statements in Massachusetts, 2012 Every special weather statement in 2012

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.