Alert archive / Connecticut / Special Weather Statements in 2013

Special Weather Statement, NWS Boston/Norton, MA

July 10, 2013

NWS Boston/Norton, MA issued this special weather statement at Jul 10, 2013, 3:10 PM EDT. It was in force for 80 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: Jul 10, 2013, 3:10 PM EDT (19:10 UTC)
Expired: Jul 10, 2013, 4:30 PM EDT
In force: 80 min
Issued by: NWS Boston/Norton, MA

The radar

The Boston radar (KBOX), 114 km from the middle of the area, began a volume at 19:09 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

Brookhaven, NY (KOKX), launched 12:00Z, 7.2 hours before the alert went out and 116 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: 722 J/kg
Mixed-layer CIN: -25 J/kg
Mixed-layer LCL: 814 m above ground
0-6 km bulk shear: 16 kt
0-1 km storm-relative helicity: 55 m²/s²
0-3 km storm-relative helicity: 73 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

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 Jul 10, 2:25 PM EDT, 45 minutes earlier.

Area forecast discussion, Jul 10, 2:25 PM EDT, 45 minutes before

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Hazardous weather outlook, Jul 10, 9:58 AM EDT, 5 hours 12 minutes before

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In the hours before

Special weather statement, Jul 10, 2:28 PM EDT, 42 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE TAUNTON MA
228 PM EDT WED JUL 10 2013

CTZ002-003-MAZ011-101915-
TOLLAND CT-HARTFORD CT-EASTERN HAMPDEN MA-
228 PM EDT WED JUL 10 2013

AT 224 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING
THUNDERSTORMS WITH VERY HEAVY RAINFALL NEAR AVON...OR 4 MILES WEST
OF WEST HARTFORD... MOVING NORTHEAST AT 25 MPH.

LOCATIONS IMPACTED INCLUDE...
HARTFORD...NEW BRITAIN...WEST HARTFORD...EAST HARTFORD...
MANCHESTER...NEWINGTON...WINDSOR LOCKS...VERNON...FARMINGTON...SOUTH
WINDSOR...SIMSBURY...EAST WINDSOR...BLOOMFIELD...WINDSOR...AVON...
BURLINGTON...GRANBY...CANTON AND EAST GRANBY.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TORRENTIAL RAINFALL IS OCCURRING WITH THESE STORMS...AND MAY LEAD TO
FLASH FLOODING. DO NOT DRIVE YOUR VEHICLE THROUGH FLOODED ROADWAYS.

&&

LAT...LON 4181 7299 4180 7296 4184 7294 4185 7295
      4205 7276 4180 7240 4164 7286 4179 7300
TIME...MOT...LOC 1824Z 234DEG 22KT 4177 7285

KJC

Special weather statement, Jul 10, 3:10 PM EDT, 0 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE TAUNTON MA
310 PM EDT WED JUL 10 2013

CTZ002>004-MAZ011-102030-
WINDHAM CT-TOLLAND CT-HARTFORD CT-EASTERN HAMPDEN MA-
310 PM EDT WED JUL 10 2013

AT 306 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING A
STRONG THUNDERSTORM NEAR WINDSOR...OR 5 MILES SOUTH OF WINDSOR
LOCKS...MOVING NORTHEAST AT 25 MPH.

WIND GUSTS UP TO 40 MPH WILL BE POSSIBLE WITH THIS STORM.

LOCATIONS IMPACTED INCLUDE...
HARTFORD...EAST HARTFORD...MANCHESTER...WINDSOR LOCKS...VERNON...
SOUTH WINDSOR...ENFIELD...STAFFORD...HAMPDEN...ELLINGTON...EAST
WINDSOR...BLOOMFIELD...WINDSOR...MONSON...SOMERS...ROCKVILLE AND
STAFFORD SPRINGS.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TORRENTIAL RAINFALL IS ALSO OCCURRING WITH THIS STORM...AND MAY LEAD
TO FLOODING. DO NOT DRIVE YOUR VEHICLE THROUGH FLOODED ROADWAYS.

&&

LAT...LON 4172 7265 4187 7278 4215 7235 4192 7215
TIME...MOT...LOC 1906Z 236DEG 20KT 4185 7264

KJC

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 10, 1:57 AM EDT	Dense Fog Advisory	BOX	Nantucket	8 hr
Jul 10, 4:07 AM EDT	Flash Flood Watch	BOX	Bristol, Essex, Franklin, Hampden, Hampshire, Middlesex and 4 more	38 hr
Jul 10, 4:52 AM EDT	Small Craft Advisory	BOX		41 hr
Jul 10, 4:55 PM EDT	Flash Flood Warning	BOX	Hampden, Worcester	3 hr
Jul 10, 5:00 PM EDT	Severe Thunderstorm Warning	BOX	Hampden, Worcester	45 min
Jul 10, 5:03 PM EDT	Tornado Warning	BOX	Hampden, Worcester	27 min
Jul 10, 6:15 PM EDT	Severe Thunderstorm Warning	BOX	Providence	30 min
Jul 10, 2:28 PM EDT	Special Weather Statement	BOX		47 min
Jul 10, 4:46 PM EDT	Special Weather Statement	BOX		44 min
Jul 10, 4:55 PM EDT	Special Weather Statement	BOX		50 min
Jul 10, 5:22 PM EDT	Tornado Warning	BOX	Northeastern Connecticut Planning Region	38 min
Jul 10, 5:59 PM EDT	Tornado Warning	BOX	Northeastern Connecticut Planning Region	16 min
Jul 10, 3:40 PM EDT	Special Weather Statement	BOX	Rockingham	35 min

Nearby

Special Weather Statements in Connecticut, 2013 Every special weather statement in 2013

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.