Alert archive / Tennessee / Tornado Warnings in 2009

Tornado Warning 77, NWS Nashville, TN

June 11, 2009Pickett County, Tennessee

NWS Nashville, TN issued this tornado warning at Jun 11, 2009, 9:12 PM CDT for Pickett County, Tennessee. It was in force for 18 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: Jun 11, 2009, 9:12 PM CDT (02:12 UTC)
Expired: Jun 11, 2009, 9:30 PM CDT
In force: 18 min
Issued by: NWS Nashville, TN
Area: Storm-based polygon

County Pickett County, TN

The radar

The Nashville radar (KOHX), 137 km from the middle of the area, began a volume at 02:15 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.

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 11, 8:18 PM CDT	Tornado Watch	SPC	4 hr

The nearest sounding before it

Nashville Metro, TN (KBNA), launched 00:00Z, 2.2 hours before the alert went out and 144 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: 2096 J/kg
Mixed-layer CIN: -1 J/kg
Mixed-layer LCL: 896 m above ground
0-6 km bulk shear: 40 kt
0-1 km storm-relative helicity: 132 m²/s²
0-3 km storm-relative helicity: 201 m²/s²
Significant tornado parameter: 1.6
Supercell composite: 8.4

Open this sounding in Storm Lab

The text

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

000 
WFUS54 KOHX 120212
TOROHX
TNC137-120245-
/O.NEW.KOHX.TO.W.0077.090612T0212Z-090612T0245Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE NASHVILLE TN
912 PM CDT THU JUN 11 2009

THE NATIONAL WEATHER SERVICE IN NASHVILLE HAS ISSUED A

* TORNADO WARNING FOR...
  CENTRAL PICKETT COUNTY IN MIDDLE TENNESSEE...
  THIS INCLUDES THE CITY OF BYRDSTOWN...

* UNTIL 945 PM CDT

* AT 911 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO NEAR
  BYRDSTOWN...MOVING SOUTHEAST AT 25 MPH.

* THE TORNADO WILL BE NEAR...
  RURAL CENTRAL PICKETT COUNTY AT 930 PM CDT

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THE SAFEST PLACE TO BE DURING A TORNADO IS IN A BASEMENT. GET UNDER A
WORKBENCH OR OTHER PIECE OF STURDY FURNITURE. IF NO BASEMENT IS
AVAILABLE...SEEK SHELTER ON THE LOWEST FLOOR OF THE BUILDING IN AN
INTERIOR HALLWAY OR ROOM SUCH AS A CLOSET. USE BLANKETS OR PILLOWS TO
COVER YOUR BODY AND ALWAYS STAY AWAY FROM WINDOWS.

IF IN MOBILE HOMES OR VEHICLES...EVACUATE THEM AND GET INSIDE A
SUBSTANTIAL SHELTER. IF NO SHELTER IS AVAILABLE...LIE FLAT IN THE
NEAREST DITCH OR OTHER LOW SPOT AND COVER YOUR HEAD WITH YOUR HANDS.

A TORNADO WATCH REMAINS IN EFFECT UNTIL MIDNIGHT CDT FRIDAY MORNING
FOR CENTRAL TENNESSEE.

&&

LAT...LON 3661 8500 3655 8502 3653 8504 3653 8521
      3661 8523
TIME...MOT...LOC 0212Z 322DEG 15KT 3658 8515

$$

21

1 follow-up statement

000 
WWUS54 KOHX 120230
SVSOHX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE NASHVILLE TN
930 PM CDT THU JUN 11 2009

TNC137-120240-
/O.CAN.KOHX.TO.W.0077.000000T0000Z-090612T0245Z/
PICKETT TN-
930 PM CDT THU JUN 11 2009

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

A TORNADO WATCH REMAINS IN EFFECT UNTIL MIDNIGHT CDT FRIDAY MORNING
FOR CENTRAL TENNESSEE.

LAT...LON 3661 8500 3655 8502 3653 8504 3653 8521
      3661 8523
TIME...MOT...LOC 0230Z 322DEG 15KT 3652 8509

$$

21

The office that day

Everything else NWS Nashville, TN issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jun 11, 8:36 PM CDT	Severe Thunderstorm Warning	OHX	Clay, Pickett	24 min
Jun 11, 8:49 PM CDT	Severe Thunderstorm Warning	OHX	Montgomery, Robertson	41 min
Jun 11, 8:52 PM CDT	Severe Thunderstorm Warning	OHX	Clay, Macon, Robertson, Sumner	38 min
Jun 11, 8:58 PM CDT	Severe Thunderstorm Warning	OHX	Clay, Fentress, Pickett	32 min
Jun 11, 9:30 PM CDT	Severe Thunderstorm Warning	OHX	Cheatham, Robertson	32 min
Jun 11, 9:37 PM CDT	Tornado Warning	OHX	Van Buren	23 min
Jun 11, 9:57 PM CDT	Severe Thunderstorm Warning	OHX	Van Buren	18 min
Jun 11, 10:12 PM CDT	Tornado Warning	OHX	Coffee, Grundy, Warren	33 min
Jun 12, 12:05 AM CDT	Severe Thunderstorm Warning	OHX	Hickman	25 min

Nearby

Tornado Warnings in Tennessee, 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.