Alert archive / Vermont / Tornado Warnings in 2009

Tornado Warning 2, NWS Burlington, VT

July 16, 2009Orange County, Vermont

NWS Burlington, VT issued this tornado warning at Jul 16, 2009, 7:28 PM EDT for Orange County, Vermont. It was in force for 32 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 16, 2009, 7:28 PM EDT (23:28 UTC)
Expired: Jul 16, 2009, 8:00 PM EDT
In force: 32 min
Issued by: NWS Burlington, VT
Area: Storm-based polygon

County Orange County, VT

The radar

The Burlington radar (KCXX), 100 km from the middle of the area, began a volume at 23:28 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 watch it was issued in

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

Issued	Product	Office	Lasted
Jul 16, 1:39 PM EDT	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

Gray, ME (KGYX), launched 12:00Z, 11.5 hours before the alert went out and 152 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 1417 m above ground
0-6 km bulk shear: 45 kt
0-1 km storm-relative helicity: 85 m²/s²
0-3 km storm-relative helicity: 223 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.

000 
WFUS51 KBTV 162328
TORBTV
VTC017-170000-
/O.NEW.KBTV.TO.W.0002.090716T2328Z-090717T0000Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE BURLINGTON VT
728 PM EDT THU JUL 16 2009

THE NATIONAL WEATHER SERVICE IN BURLINGTON HAS ISSUED A

* TORNADO WARNING FOR...
  ORANGE COUNTY IN CENTRAL VERMONT

* UNTIL 800 PM EDT.

* AT 725 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO NEAR
  VERSHIRE..MOVING EAST AT 25 MPH. THIS STORM HAS PRODUCED WIND 
  DAMAGE. 

* THE TORNADO IS NEAR...
  CORINTH AROUND 735 PM EDT.
  BRADFORD AROUND 745 PM EDT.
  FAIRLEE AROUND 750 PM EDT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

IN ADDITION TO THE TORNADO...THIS STORM IS CAPABLE OF PRODUCING
QUARTER SIZE HAIL AND DESTRUCTIVE STRAIGHT LINE WINDS.

THE SAFEST PLACE TO BE DURING A TORNADO IS IN A BASEMENT. GET UNDER A
WORKBENCH OR OTHER PIECE OF STURDY FURNITURE.

&&

LAT...LON 4404 7206 4399 7210 4397 7209 4389 7213
      4388 7216 4386 7216 4384 7218 4403 7243
      4412 7236 4408 7203
TIME...MOT...LOC 2326Z 291DEG 22KT 4400 7232

$$

NASH

2 follow-up statements

000 
WWUS51 KBTV 162341
SVSBTV

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BURLINGTON VT
741 PM EDT THU JUL 16 2009

VTC017-170000-
/O.CON.KBTV.TO.W.0002.000000T0000Z-090717T0000Z/
ORANGE VT-
741 PM EDT THU JUL 16 2009

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 800 PM EDT FOR EAST
CENTRAL ORANGE COUNTY...

AT 739 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO.  THIS 
THUNDERSTORM WAS LOCATED NEAR CORINTH..MOVING EAST AT 25 MPH. WIND 
DAMAGE AND HAIL HAVE ALREADY BEEN REPORTED WITH THIS STORM.

OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
BRADFORD...WEST NEWBURY...BRADFORD...EXIT 16 I91...ELY...SOUTH
NEWBURY...NEWBURY...EXIT 15 I91 AND FAIRLEE

PRECAUTIONARY/PREPAREDNESS ACTIONS...

IN ADDITION TO THE TORNADO...THIS STORM IS CAPABLE OF PRODUCING
QUARTER SIZE HAIL AND DESTRUCTIVE STRAIGHT LINE WINDS. 

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.

&&

LAT...LON 4400 7231 4409 7222 4408 7203 4404 7206
      4399 7210 4397 7209 4389 7213 4388 7216
      4386 7216 4384 7218
TIME...MOT...LOC 2340Z 291DEG 22KT 4398 7220

$$

NASH

000 
WWUS51 KBTV 170000
SVSBTV

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BURLINGTON VT
800 PM EDT THU JUL 16 2009

VTC017-170008-
/O.EXP.KBTV.TO.W.0002.000000T0000Z-090717T0000Z/
ORANGE VT-
800 PM EDT THU JUL 16 2009

...THE TORNADO WARNING FOR EAST CENTRAL ORANGE COUNTY HAS EXPIRED...

THE SEVERE THUNDERSTORM THAT PROMPTED THE WARNINGS HAS MOVED EAST OF 
THE AREA. 

LAT...LON 4400 7231 4409 7222 4408 7203 4404 7206
      4399 7210 4397 7209 4389 7213 4388 7216
      4386 7216 4384 7218
TIME...MOT...LOC 2358Z 291DEG 22KT 4394 7206

$$

NASH

The office that day

Everything else NWS Burlington, VT issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jul 16, 10:04 AM EDT	Special Weather Statement	BTV	Franklin, Grand Isle, Lamoille	56 min
Jul 16, 3:54 PM EDT	Special Weather Statement	BTV	Addison, Chittenden, Franklin, Grand Isle	51 min
Jul 16, 4:20 PM EDT	Severe Thunderstorm Warning	BTV	Chittenden, Franklin, Grand Isle, Lamoille	55 min
Jul 16, 4:34 PM EDT	Special Weather Statement	BTV	Chittenden, Washington	56 min
Jul 16, 4:42 PM EDT	Severe Thunderstorm Warning	BTV	Chittenden, Lamoille, Washington	52 min
Jul 16, 5:09 PM EDT	Severe Thunderstorm Warning	BTV	Chittenden, Franklin, Lamoille	51 min
Jul 16, 5:15 PM EDT	Special Weather Statement	BTV	Addison	60 min
Jul 16, 5:29 PM EDT	Severe Thunderstorm Warning	BTV	Addison, Rutland	61 min
Jul 16, 5:49 PM EDT	Severe Thunderstorm Warning	BTV	Franklin, Lamoille, Orleans	43 min
Jul 16, 5:50 PM EDT	Special Weather Statement	BTV	Grand Isle	55 min
Jul 16, 5:58 PM EDT	Severe Thunderstorm Warning	BTV	Franklin, Grand Isle	62 min
Jul 16, 6:22 PM EDT	Special Weather Statement	BTV	Washington	53 min
Jul 16, 6:30 PM EDT	Severe Thunderstorm Warning	BTV	Addison, Rutland, Windsor	60 min
Jul 16, 6:43 PM EDT	Severe Thunderstorm Warning	BTV	Orange, Washington	62 min
Jul 16, 6:53 PM EDT	Tornado Warning	BTV	Orange, Washington	52 min
Jul 16, 7:20 PM EDT	Severe Thunderstorm Warning	BTV	Rutland, Windsor	39 min
Jul 16, 7:45 PM EDT	Special Weather Statement	BTV	Lamoille	60 min

Nearby

Tornado Warnings in Vermont, 2009 Every tornado warning in 2009 Tornadoes in 2009

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.