Alert archive / Tennessee / Tornado Warnings in 2007

Tornado Warning 6, NWS Nashville, TN

April 26, 2007Overton County, Tennessee

NWS Nashville, TN issued this tornado warning at Apr 26, 2007, 4:38 PM CDT for Overton County, Tennessee. It was in force for 23 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: Apr 26, 2007, 4:38 PM CDT (21:38 UTC)
Expired: Apr 26, 2007, 5:01 PM CDT
In force: 23 min
Issued by: NWS Nashville, TN
Area: Counties, with a storm outline in the text

County Overton County, TN

The radar

The Nashville radar (KOHX), 116 km from the middle of the area, began a volume at 21:38 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
Apr 26, 3:18 PM CDT	Tornado Watch	SPC	7 hr

The nearest sounding before it

Nashville Metro, TN (KBNA), launched 12:00Z, 9.6 hours before the alert went out and 122 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: 159 J/kg
Mixed-layer CIN: -25 J/kg
Mixed-layer LCL: 746 m above ground
0-6 km bulk shear: 65 kt
0-1 km storm-relative helicity: 184 m²/s²
0-3 km storm-relative helicity: 244 m²/s²
Significant tornado parameter: 0.1
Supercell composite: 2.7

Open this sounding in Storm Lab

The text

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

000 
WFUS54 KOHX 262138
TOROHX
TNC133-262215-
/O.NEW.KOHX.TO.W.0006.070426T2138Z-070426T2215Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE NASHVILLE TN
438 PM CDT THU APR 26 2007

THE NATIONAL WEATHER SERVICE IN NASHVILLE HAS ISSUED A

* TORNADO WARNING FOR...
  OVERTON COUNTY IN TENNESSEE...
  THIS INCLUDES THE CITY OF LIVINGSTON...

* UNTIL 515 PM CDT

* AT 429 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO 11 MILES
  SOUTHWEST OF LIVINGSTON...OR ABOUT 8 MILES NORTH OF COOKEVILLE...
  MOVING NORTHEAST AT 50 MPH.

* THE TORNADO WILL BE NEAR...
  LIVINGSTON AT 450 PM CDT

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.

LAT...LON 3647 8515 3644 8515 3640 8512 3624 8534
      3624 8537 3634 8549 3636 8549 3654 8528
      3654 8527

$$

13

1 follow-up statement

000 
WWUS54 KOHX 262201
SVSOHX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE NASHVILLE TN
500 PM CDT THU APR 26 2007

TNC133-262209-
/O.CAN.KOHX.TO.W.0006.000000T0000Z-070426T2215Z/
OVERTON TN-
500 PM CDT THU APR 26 2007

...THE TORNADO WARNING FOR OVERTON COUNTY IS CANCELLED...

THE THUNDERSTORM OVER THE LIVINGSTON AREA AT 500 PM HAS WEAKENED. 
RADAR NO LONGER INDICATES A TORNADO. THEREFORE...THE WARNING HAS 
BEEN CANCELLED.

A TORNADO WATCH REMAINS IN EFFECT FOR THE AREA UNTIL 10 PM CDT. 

LAT...LON 3647 8515 3644 8515 3640 8512 3624 8534
      3624 8537 3634 8549 3636 8549 3654 8528
      3654 8527

$$

13

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 26, 4:02 PM CDT	Tornado Warning	OHX	Cumberland	28 min
Apr 26, 4:17 PM CDT	Severe Thunderstorm Warning	OHX	Putnam	28 min
Apr 26, 4:23 PM CDT	Tornado Warning	OHX	Cumberland	37 min
Apr 26, 4:30 PM CDT	Tornado Warning	OHX	Clay, Overton	30 min

Nearby

Tornado Warnings in Tennessee, 2007 Every tornado warning in 2007 Tornadoes in 2007

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.