Alert archive / Connecticut / Tornado Warnings in 2010

Tornado Warning 1, NWS Boston/Norton, MA

June 6, 2010Capitol Planning Region, Connecticut

NWS Boston/Norton, MA issued this tornado warning at Jun 6, 2010, 3:13 PM EDT for Capitol Planning Region, Connecticut. It was in force for 29 min. 9 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: Jun 6, 2010, 3:13 PM EDT (19:13 UTC)
Expired: Jun 6, 2010, 3:42 PM EDT
In force: 29 min
Issued by: NWS Boston/Norton, MA
Area: Storm-based polygon

County Capitol Planning Region, CT

The radar

The Brookhaven radar (KOKX), 101 km from the middle of the area, began a volume at 19:15 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
Jun 6, 3:15 PM EDT	FUNNEL CLOUD	Avon, CT	FUNNEL CLOUD SPOTTED TO THE SOUTHWEST OF ROUTE 20 AND OLD CITY ROAD.
Jun 6, 3:15 PM EDT	FUNNEL CLOUD	Avon, CT	FUNNEL CLOUD SPOTTED TO THE SOUTHWEST OF ROUTE 20 AND OLD COUNTY ROAD.
Jun 6, 3:20 PM EDT	FUNNEL CLOUD	Windsor Locks, CT	FUNNEL CLOUD OBSERVED LOOKING EAST ACROSS CONNECTICUT RIVER.
Jun 6, 3:20 PM EDT	FUNNEL CLOUD	Windsor Locks, CT	FUNNEL CLOUD OBSERVED LOOKING EAST ACROSS CONNECTICUT RIVER.
Jun 6, 3:20 PM EDT	TSTM WND DMG	Avon, CT	TREES DOWN ON BURNHAM ROAD.
Jun 6, 3:20 PM EDT	TSTM WND DMG	Avon, CT	TREES DOWN ON BURNHAM ROAD.
Jun 6, 3:20 PM EDT	TSTM WND DMG	Hartford, CT	WIRES DOWN ON BROOK STREET AND ATWOOD STREET.
Jun 6, 3:20 PM EDT	TSTM WND DMG	Hartford, CT	WIRES DOWN ON BROOK STREET AND ATWOOD STREET.
Jun 6, 3:29 PM EDT	HAIL 1.75	Hartford, CT	GOLF BALL SIZED HAIL EAST OF I-91.

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

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Jun 6, 11:08 AM EDT	Tornado Watch	SPC	8 hr

The nearest sounding before it

Brookhaven, NY (KOKX), launched 12:00Z, 7.2 hours before the alert went out and 101 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: 321 J/kg
Mixed-layer CIN: -95 J/kg
Mixed-layer LCL: 1051 m above ground
0-6 km bulk shear: 47 kt
0-1 km storm-relative helicity: 95 m²/s²
0-3 km storm-relative helicity: 132 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.4

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

610 
WFUS51 KBOX 061913
TORBOX
CTC003-062000-
/O.NEW.KBOX.TO.W.0001.100606T1913Z-100606T2000Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE TAUNTON MA
313 PM EDT SUN JUN 6 2010

THE NATIONAL WEATHER SERVICE IN TAUNTON HAS ISSUED A

* TORNADO WARNING FOR...
  CENTRAL HARTFORD COUNTY IN NORTHERN CONNECTICUT...
  THIS INCLUDES THE CITIES OF...WINDSOR LOCKS...WEST HARTFORD...
  HARTFORD...EAST HARTFORD...BRISTOL...

* UNTIL 400 PM EDT

* AT 309 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO NEAR
  BURLINGTON...OR NEAR BRISTOL...MOVING NORTHEAST AT 55 MPH.

* SOME LOCATIONS IN THE WARNING INCLUDE...CANTON...FARMINGTON...
  AVON...SIMSBURY...BLOOMFIELD...EAST GRANBY...WINDSOR...SOUTH
  WINDSOR...EAST WINDSOR AND ENFIELD.

WHEN A TORNADO WARNING IS ISSUED BASED ON DOPPLER RADAR...IT MEANS A
TORNADO MAY ALREADY BE ON THE GROUND OR IS EXPECTED TO DEVELOP
SHORTLY. TAKE COVER NOW! MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR
OF A STURDY BUILDING. AVOID WINDOWS. IF IN A MOBILE HOME...A VEHICLE
OR OUTDOORS...MOVE TO THE CLOSEST SUBSTANTIAL SHELTER AND PROTECT
YOURSELF FROM FLYING DEBRIS.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 800 PM EDT SUNDAY EVENING FOR
NORTHERN CONNECTICUT AND MASSACHUSETTS AND SOUTHERN NEW HAMPSHIRE AND
CENTRAL RHODE ISLAND.

&&

LAT...LON 4181 7296 4183 7294 4184 7295 4200 7254
      4179 7252 4163 7296 4164 7297 4170 7301
      4171 7300 4177 7302 4180 7302
TIME...MOT...LOC 1913Z 245DEG 50KT 4176 7289

$$

FRANK

2 follow-up statements

582 
WWUS51 KBOX 061927
SVSBOX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TAUNTON MA
327 PM EDT SUN JUN 6 2010

CTC003-062000-
/O.CON.KBOX.TO.W.0001.000000T0000Z-100606T2000Z/
HARTFORD CT-
327 PM EDT SUN JUN 6 2010

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 400 PM EDT FOR CENTRAL
HARTFORD COUNTY...

AT 323 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A TORNADO.  THIS TORNADO WAS LOCATED NEAR BLOOMFIELD...OR
NEAR HARTFORD...MOVING NORTHEAST AT 55 MPH.

OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
WINDSOR...SOUTH WINDSOR...WINDSOR LOCKS...EAST WINDSOR AND ENFIELD

PRECAUTIONARY/PREPAREDNESS ACTIONS...

WHEN A TORNADO WARNING IS ISSUED BASED ON DOPPLER RADAR...IT MEANS
THAT STRONG ROTATION HAS BEEN DETECTED IN THE STORM. A TORNADO MAY
ALREADY BE ON THE GROUND...OR IS EXPECTED TO DEVELOP SHORTLY. IF YOU
ARE IN THE PATH OF THIS DANGEROUS STORM...MOVE INDOORS AND TO THE
LOWEST LEVEL OF THE BUILDING. STAY AWAY FROM WINDOWS. IF DRIVING...DO
NOT SEEK SHELTER UNDER A HIGHWAY OVERPASS.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 800 PM EDT SUNDAY EVENING FOR
NORTHERN CONNECTICUT AND MASSACHUSETTS AND SOUTHERN NEW HAMPSHIRE AND
CENTRAL RHODE ISLAND.

&&

LAT...LON 4170 7285 4171 7287 4172 7290 4175 7294
      4178 7296 4180 7293 4183 7292 4186 7290
      4200 7254 4179 7252 4167 7286
TIME...MOT...LOC 1926Z 245DEG 50KT 4181 7266

$$

FRANK

349 
WWUS51 KBOX 061942
SVSBOX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TAUNTON MA
342 PM EDT SUN JUN 6 2010

CTC003-061951-
/O.CAN.KBOX.TO.W.0001.000000T0000Z-100606T2000Z/
HARTFORD CT-
342 PM EDT SUN JUN 6 2010

...THE TORNADO WARNING FOR CENTRAL HARTFORD COUNTY IS CANCELLED...

THE SEVERE THUNDERSTORM THAT PROMPTED THE WARNING HAS MOVED EAST OF 
THE REGION.  THEREFORE...THE TORNADO WARNING HAS BEEN CANCELLED.  
ADDITIONAL...STRONG THUNDERSTORM DEVELOPMENT MAY OCCUR THROUGH 
EARLY THIS EVENING.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 800 PM EDT SUNDAY EVENING FOR
NORTHERN CONNECTICUT AND MASSACHUSETTS AND SOUTHERN NEW HAMPSHIRE AND
CENTRAL RHODE ISLAND.

LAT...LON 4170 7285 4171 7287 4172 7290 4175 7294
      4178 7296 4180 7293 4183 7292 4186 7290
      4200 7254 4179 7252 4167 7286
TIME...MOT...LOC 1941Z 245DEG 50KT 4190 7241

$$

FRANK

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 5, 8:00 PM EDT	Special Weather Statement	BOX		45 min
Jun 6, 1:54 PM EDT	Severe Thunderstorm Warning	BOX	Capitol Planning Region, Northeastern Connecticut Planning Region	51 min
Jun 6, 2:49 PM EDT	Severe Thunderstorm Warning	BOX	Capitol Planning Region	26 min
Jun 6, 2:57 PM EDT	Severe Thunderstorm Warning	BOX	Capitol Planning Region	33 min
Jun 6, 3:21 PM EDT	Severe Thunderstorm Warning	BOX	Northeastern Connecticut Planning Region	24 min
Jun 6, 3:35 PM EDT	Severe Thunderstorm Warning	BOX	Northeastern Connecticut Planning Region	30 min

Nearby

Tornado Warnings in Connecticut, 2010 Every tornado warning in 2010 Tornadoes in 2010

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.