Alert archive / New Hampshire / Special Weather Statements in 2012

Special Weather Statement, NWS Boston/Norton, MA

May 16, 2012Cheshire County, New Hampshire

NWS Boston/Norton, MA issued this special weather statement at May 16, 2012, 7:51 PM EDT for Cheshire County, New Hampshire. It was in force for 39 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, 7:51 PM EDT (23:51 UTC)
Expired
May 16, 2012, 8:30 PM EDT
In force
39 min
Issued by
NWS Boston/Norton, MA

County Cheshire County, NH

The radar

The Boston radar (KBOX), 150 km from the middle of the area, began a volume at 23:53 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, 11.9 hours before the alert went out and 150 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 12:00Z on 2012-05-16Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 304 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 12:00Z on 2012-05-16The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 16 square meters per square second.19395878Sfc1 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
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, 1 hour 1 minute earlier.

Area forecast discussion, May 16, 6:50 PM EDT, 1 hour 1 minute before
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Hazardous weather outlook, May 16, 1:23 PM EDT, 6 hours 28 minutes before
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In the hours before

Special weather statement, May 16, 7:08 PM EDT, 43 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, 12 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, 6 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
Special weather statement, May 16, 7:51 PM EDT, 0 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE TAUNTON MA
751 PM EDT WED MAY 16 2012

NHZ011-015-170030-
CHESHIRE NH-WESTERN AND CENTRAL HILLSBOROUGH NH-
751 PM EDT WED MAY 16 2012

AT 749 PM EDT NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STRONG THUNDERSTORM CAPABLE OF PRODUCING WIND GUSTS TO 40 MPH AND
PENNY SIZED HAIL OVER MARLOW...OR ABOUT 11 MILES NORTHEAST OF
KEENE...MOVING EAST AT 35 MPH.

* SOME LOCATIONS AFFECTED INCLUDE...STODDARD...WINDSOR...ANTRIM...
  BENNINGTON...HILLSBOROUGH...DEERING...FRANCESTOWN...WEARE AND
  GOFFSTOWN.

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.

THIS STORM IS CAPABLE OF PRODUCING RAINFALL UP TO 1.5 INCHES IN ONE
HALF HOUR. AS A RESULT...MINOR FLOODING IN POOR DRAINAGE AREAS IS
ANTICIPATED IN SOME LOCATIONS.

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 4312 7185 4315 7167 4306 7164 4306 7155
      4297 7156 4296 7162 4303 7247 4306 7247
      4308 7245 4314 7245 4315 7243 4314 7242
      4314 7238 4316 7238 4319 7217 4314 7217
      4313 7205 4319 7203 4320 7190

NMB

The office that day

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

IssuedProductOfficeCountiesLasted
May 16, 1:55 AM EDTSpecial Marine WarningBOX65 min
May 16, 3:04 AM EDTSpecial Marine WarningBOX56 min
May 16, 7:01 PM EDTSevere Thunderstorm WarningBOXFranklin44 min
May 16, 7:45 PM EDTSpecial Weather StatementBOXFranklin45 min
May 16, 7:08 PM EDTSpecial Weather StatementBOXCheshire52 min

Nearby

Special Weather Statements in New Hampshire, 2012Every 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.