Alert archive / Connecticut / Tornado Warnings in 2013

Tornado Warning 11, NWS Boston/Norton, MA

July 10, 2013Northeastern Connecticut Planning Region, Connecticut

NWS Boston/Norton, MA issued this tornado warning at Jul 10, 2013, 5:22 PM EDT for Northeastern Connecticut Planning Region, Connecticut. It was in force for 38 min. 4 reports came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued: Jul 10, 2013, 5:22 PM EDT (21:22 UTC)
Expired: Jul 10, 2013, 6:00 PM EDT
In force: 38 min
Issued by: NWS Boston/Norton, MA
Area: Storm-based polygon

County Northeastern Connecticut Planning Region, CT

The radar

The Boston radar (KBOX), 96 km from the middle of the area, began a volume at 21:25 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.

What was reported inside it

Time	Report	Where	Remark
Jul 10, 5:36 PM EDT	TSTM WND DMG	Coventry, CT	SEVERAL TREES DOWN ON SOUTH STREET AND BUNKER HILL ROAD.
Jul 10, 5:42 PM EDT	TSTM WND DMG	Mansfield, CT	WIRES DOWN ON RT. 195. TREES DOWN ON DEPOT ROAD.
Jul 10, 5:50 PM EDT	TSTM WND DMG	Coventry, CT	TREE DOWN ON ROUTE 31
Jul 10, 5:51 PM EDT	TSTM WND DMG	Mansfield, CT	POSSIBLE TORNADO. MULTIPLE TREES AND WIRES DOWN AT SEVERAL LOCATIONS ALONG ROUTE 195. TREE ONTO HOUSE ON COVENTRY RD.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Brookhaven, NY (KOKX), launched 12:00Z, 9.4 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.

576 
WFUS51 KBOX 102122
TORBOX
CTC013-015-102200-
/O.NEW.KBOX.TO.W.0011.130710T2122Z-130710T2200Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE TAUNTON MA
522 PM EDT WED JUL 10 2013

THE NATIONAL WEATHER SERVICE IN TAUNTON HAS ISSUED A

* TORNADO WARNING FOR...
  CENTRAL WINDHAM COUNTY IN NORTHERN CONNECTICUT...
  CENTRAL TOLLAND COUNTY IN NORTHERN CONNECTICUT...

* UNTIL 600 PM EDT
    
* AT 518 PM EDT...DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM
  CAPABLE OF PRODUCING A TORNADO. THIS DANGEROUS STORM WAS LOCATED
  NEAR ANDOVER...OR 6 MILES SOUTHWEST OF MANSFIELD...AND MOVING
  NORTHEAST AT 25 MPH.

* LOCATIONS IMPACTED INCLUDE...
  WILLIMANTIC...MANSFIELD...CHAPLIN...WILLINGTON...ASHFORD...
  ANDOVER...COVENTRY...COLUMBIA...BOLTON AND STORRS.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW. MOVE TO A BASEMENT OR AN INTERIOR ROOM ON THE LOWEST
FLOOR OF A STURDY BUILDING. AVOID WINDOWS. IF IN A MOBILE HOME OR
OUTDOORS...MOVE TO THE CLOSEST SUBSTANTIAL SHELTER AND PROTECT
YOURSELF FROM FLYING DEBRIS.

&&

LAT...LON 4200 7225 4183 7197 4170 7222 4171 7224
      4166 7232 4176 7247 4180 7248
TIME...MOT...LOC 2122Z 231DEG 21KT 4177 7235 

$$

KJC

1 follow-up statement

681 
WWUS51 KBOX 102140
SVSBOX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TAUNTON MA
540 PM EDT WED JUL 10 2013

CTC013-015-102200-
/O.CON.KBOX.TO.W.0011.000000T0000Z-130710T2200Z/
WINDHAM CT-TOLLAND CT-
540 PM EDT WED JUL 10 2013

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 600 PM EDT FOR CENTRAL
WINDHAM AND CENTRAL TOLLAND COUNTIES...
    
AT 536 PM EDT...DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE
OF PRODUCING A TORNADO. THIS DANGEROUS STORM WAS LOCATED NEAR
COVENTRY...OR 4 MILES SOUTH OF MANSFIELD...MOVING NORTHEAST AT 15
MPH.

LOCATIONS IMPACTED INCLUDE...
MANSFIELD...CHAPLIN...WILLINGTON...ASHFORD...COVENTRY AND STORRS. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! MOVE TO A BASEMENT OR AN INTERIOR ROOM ON THE LOWEST
FLOOR OF A STURDY BUILDING. AVOID WINDOWS. IF IN A MOBILE HOME OR
OUTDOORS...MOVE TO THE CLOSEST SUBSTANTIAL SHELTER AND PROTECT
YOURSELF FROM FLYING DEBRIS.

&&

LAT...LON 4195 7217 4183 7197 4171 7224 4172 7224
      4182 7235
TIME...MOT...LOC 2136Z 246DEG 14KT 4177 7227 

$$

KJC

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 10, 4:07 AM EDT	Flash Flood Watch	BOX	Capitol Planning Region, Northeastern Connecticut Planning Region	38 hr
Jul 10, 2:28 PM EDT	Special Weather Statement	BOX		47 min
Jul 10, 3:10 PM EDT	Special Weather Statement	BOX		80 min
Jul 10, 4:46 PM EDT	Special Weather Statement	BOX		44 min
Jul 10, 4:55 PM EDT	Flash Flood Warning	BOX	Capitol Planning Region, Northeastern Connecticut Planning Region	3 hr
Jul 10, 4:55 PM EDT	Special Weather Statement	BOX		50 min
Jul 10, 5:00 PM EDT	Severe Thunderstorm Warning	BOX	Northeastern Connecticut Planning Region	45 min
Jul 10, 5:03 PM EDT	Tornado Warning	BOX	Northeastern Connecticut Planning Region	27 min
Jul 10, 5:59 PM EDT	Tornado Warning	BOX	Northeastern Connecticut Planning Region	16 min
Jul 10, 6:15 PM EDT	Severe Thunderstorm Warning	BOX	Northeastern Connecticut Planning Region	30 min

Nearby

Tornado Warnings in Connecticut, 2013 Every tornado warning in 2013 Tornadoes 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.