Alert archive / Massachusetts / Special Weather Statements in 2012

Special Weather Statement, NWS Boston/Norton, MA

September 8, 2012Franklin County, Massachusetts

NWS Boston/Norton, MA issued this special weather statement at Sep 8, 2012, 2:06 PM EDT for Franklin County, Massachusetts. It was in force for 24 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: Sep 8, 2012, 2:06 PM EDT (18:06 UTC)
Expired: Sep 8, 2012, 2:30 PM EDT
In force: 24 min
Issued by: NWS Boston/Norton, MA

County Franklin County, MA

The radar

The Albany radar (KENX), 111 km from the middle of the area, began a volume at 18:06 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, 6.1 hours before the alert went out and 93 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: 113 J/kg
Mixed-layer CIN: -168 J/kg
Mixed-layer LCL: 869 m above ground
0-6 km bulk shear: 43 kt
0-1 km storm-relative helicity: 294 m²/s²
0-3 km storm-relative helicity: 397 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.8

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 Sep 8, 11:53 AM EDT, 2 hours 13 minutes earlier.

Area forecast discussion, Sep 8, 11:53 AM EDT, 2 hours 13 minutes before

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Hazardous weather outlook, Sep 8, 4:00 AM EDT, 10 hours 6 minutes before

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In the hours before

Special weather statement, Sep 8, 9:15 AM EDT, 4 hours 51 minutes before

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Special weather statement, Sep 8, 1:41 PM EDT, 25 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE TAUNTON MA
141 PM EDT SAT SEP 8 2012

CTZ002-MAZ009-011-081845-
EASTERN HAMPDEN MA-HARTFORD CT-WESTERN HAMPDEN MA-
141 PM EDT SAT SEP 8 2012

AT 140 PM EDT NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STRONG THUNDERSTORM 29 MILES SOUTHWEST OF HARTLAND...OR ABOUT 10
MILES NORTHWEST OF WATERBURY...MOVING NORTHEAST AT 35 MPH.
WIND GUSTS TO 50 MPH...FREQUENT LIGHTNING...AND HEAVY DOWNPOURS CAN
BE EXPECTED WITH THIS STORM.

* SOME LOCATIONS AFFECTED INCLUDE...HARTLAND...BURLINGTON...CANTON...
  AND SIMSBURY

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.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 900 PM EDT SATURDAY EVENING
FOR NORTHERN CONNECTICUT AND WESTERN MASSACHUSETTS.

&&

LAT...LON 4204 7302 4209 7298 4202 7274 4173 7301
      4180 7302 4181 7295 4188 7295 4190 7294
      4190 7292 4197 7290 4196 7303 4197 7303

FIELD

Special weather statement, Sep 8, 2:06 PM EDT, 0 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE TAUNTON MA
206 PM EDT SAT SEP 8 2012

MAZ002-003-008-081830-
EASTERN FRANKLIN MA-WESTERN FRANKLIN MA-WESTERN HAMPSHIRE MA-
206 PM EDT SAT SEP 8 2012

AT 200 PM EDT NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STRONG THUNDERSTORM CAPABLE OF PRODUCING WIND GUSTS TO 40 MPH 2 MILES
EAST OF CHESTERFIELD...OR ABOUT 9 MILES NORTHWEST OF NORTHAMPTON...
MOVING NORTHEAST AT 40 MPH.

* SOME LOCATIONS AFFECTED INCLUDE...ASHFIELD...CONWAY...SHELBURNE...
  DEERFIELD...GREENFIELD...COLRAIN...LEYDEN AND BERNARDSTON.

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.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 9 PM FOR HAMPSHIRE AND
HAMPDEN COUNTIES IN MASSACHUSETTS.

&&

LAT...LON 4272 7268 4268 7248 4233 7277 4238 7291

FIELD

The office that day

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

Issued	Product	Office	Counties	Lasted
Sep 8, 2:30 PM EDT	Severe Thunderstorm Warning	BOX	Hampden, Hampshire	45 min
Sep 8, 3:51 PM EDT	Special Weather Statement	BOX	Hampden	24 min
Sep 8, 5:09 PM EDT	Special Weather Statement	BOX	Middlesex	51 min
Sep 8, 5:32 PM EDT	Severe Thunderstorm Warning	BOX	Essex, Middlesex, Worcester	36 min
Sep 8, 5:45 PM EDT	Severe Thunderstorm Warning	BOX	Franklin, Hampden, Hampshire, Worcester	60 min
Sep 8, 5:56 PM EDT	Severe Thunderstorm Warning	BOX	Hampden, Hampshire	64 min
Sep 8, 6:31 PM EDT	Severe Thunderstorm Warning	BOX	Franklin, Hampden, Hampshire, Middlesex, Worcester	59 min
Sep 8, 6:50 PM EDT	Severe Thunderstorm Warning	BOX	Hampden, Hampshire	25 min
Sep 8, 6:58 PM EDT	Severe Thunderstorm Warning	BOX	Franklin, Hampden, Hampshire, Worcester	32 min
Sep 8, 7:15 PM EDT	Severe Thunderstorm Warning	BOX	Hampden, Hampshire	30 min
Sep 8, 7:30 PM EDT	Severe Thunderstorm Warning	BOX	Franklin, Hampden, Hampshire, Middlesex, Worcester	60 min
Sep 8, 1:41 PM EDT	Special Weather Statement	BOX		64 min
Sep 8, 2:02 PM EDT	Severe Thunderstorm Warning	BOX	Capitol Planning Region	43 min
Sep 8, 4:09 PM EDT	Special Weather Statement	BOX	Cheshire	51 min
Sep 8, 4:30 PM EDT	Severe Thunderstorm Warning	BOX	Cheshire, Hillsborough	45 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.