Alert archive / Tennessee / Tornado Warnings in 2007

Tornado Warning 8, NWS Nashville, TN

October 18, 2007Stewart County, Tennessee

NWS Nashville, TN issued this tornado warning at Oct 18, 2007, 8:08 PM CDT for Stewart County, Tennessee. It was in force for 37 min. 2 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: Oct 18, 2007, 8:08 PM CDT (01:08 UTC)
Expired: Oct 18, 2007, 8:45 PM CDT
In force: 37 min
Issued by: NWS Nashville, TN
Area: Storm-based polygon

County Stewart County, TN

What was reported inside it

Time	Report	Where	Remark
Oct 18, 8:15 PM CDT	TORNADO	15 Nw Dover, TN	NWS STORM DURVEY INDICATED AN EF1 TORNADO, WITH WINDS ABOUT 90 MPH IN THE LAND BETWEEN THE LAKES STATE PARK. THE PATH LENGTH OF THE TORNADO WAS 0.67 MILES AND THE PATH WIDTH WAS ABOUT 500 YARDS. NUMEROUS TREES WERE SNAPPED AND UPROOTED ALONG ROUTE 206 IN THE P
Oct 18, 8:20 PM CDT	TSTM WND DMG	10 Nnw Dover, TN	TREES WERE BLOWN DOWN IN THE HOMEPLACE SECTION OF LAND BETWEEN THE LAKES ON TRACE ROAD.

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
Oct 18, 1:31 PM CDT	Tornado Watch	SPC	9 hr

The nearest sounding before it

Nashville Metro, TN (KBNA), launched 00:00Z, 1.1 hours before the alert went out and 132 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: 1487 J/kg
Mixed-layer CIN: -10 J/kg
Mixed-layer LCL: 778 m above ground
0-6 km bulk shear: 56 kt
0-1 km storm-relative helicity: 259 m²/s²
0-3 km storm-relative helicity: 337 m²/s²
Significant tornado parameter: 2.8
Supercell composite: 10.5

Open this sounding in Storm Lab

The text

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

000 
WFUS54 KOHX 190110
TOROHX
TNC161-190145-
/O.NEW.KOHX.TO.W.0008.071019T0108Z-071019T0145Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE NASHVILLE TN
808 PM CDT THU OCT 18 2007

THE NATIONAL WEATHER SERVICE IN NASHVILLE HAS ISSUED A

* TORNADO WARNING FOR...
  NORTHERN STEWART COUNTY IN TENNESSEE...

* UNTIL 845 PM CDT

* AT 804 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO OVER CENTRAL
  CALLOWAY COUNTY...OR ABOUT 7 MILES EAST OF MURRAY...MOVING
  NORTHEAST AT 45 MPH.

* THE TORNADO WILL BE NEAR...
  LAND BETWEEN THE LAKES 815 PM CDT

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.

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 3668 8803 3669 8788 3666 8784 3666 8764
      3664 8763 3649 8805 3650 8807 3668 8809
      3670 8806
TIME...MOT...LOC 0108Z 236DEG 41KT 3661 8815

$$

BOYD

1 follow-up statement

000 
WWUS54 KOHX 190123
SVSOHX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE NASHVILLE TN
822 PM CDT THU OCT 18 2007

TNC161-190145-
/O.CON.KOHX.TO.W.0008.000000T0000Z-071019T0145Z/
STEWART TN-
822 PM CDT THU OCT 18 2007

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 845 PM CDT FOR NORTHERN
STEWART COUNTY...

AT 817 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A TORNADO.  THIS TORNADO WAS LOCATED OVER EXTREME
NORTHWESTERN STEWART COUNTY...OR ABOUT 16 MILES EAST OF MURRAY...
MOVING NORTHEAST AT 45 MPH. THE TORNADO WILL EXIT NORTHWESTERN
STWART COUNTY SHORTLY.

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 1100 PM CDT THURSDAY EVENING
FOR CENTRAL TENNESSEE.

LAT...LON 3668 8803 3669 8788 3666 8784 3666 8764
      3664 8763 3649 8805 3650 8807 3668 8809
      3670 8806
TIME...MOT...LOC 0122Z 236DEG 41KT 3670 8798

$$

BOYD

The office that day

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

Issued	Product	Office	Counties	Lasted
Oct 18, 8:48 PM CDT	Severe Thunderstorm Warning	OHX	Benton, Stewart	57 min
Oct 18, 9:17 PM CDT	Severe Thunderstorm Warning	OHX	Benton, Houston, Humphreys, Stewart	43 min
Oct 18, 9:56 PM CDT	Tornado Warning	OHX	Benton, Humphreys	34 min
Oct 18, 10:19 PM CDT	Severe Thunderstorm Warning	OHX	Cheatham, Davidson, Dickson, Hickman, Humphreys, Lawrence and 8 more	56 min
Oct 18, 11:10 PM CDT	Severe Thunderstorm Warning	OHX	Cheatham, Davidson, Hickman, Macon, Maury, Robertson and 5 more	50 min
Oct 18, 11:19 PM CDT	Severe Thunderstorm Warning	OHX	Giles, Hickman, Lawrence, Lewis, Maury, Perry and 1 more	56 min
Oct 18, 11:51 PM CDT	Severe Thunderstorm Warning	OHX	Cannon, Clay, Davidson, DeKalb, Jackson, Macon and 6 more	54 min
Oct 19, 12:03 AM CDT	Severe Thunderstorm Warning	OHX	Bedford, Giles, Marshall, Maury	27 min
Oct 19, 12:35 AM CDT	Severe Thunderstorm Warning	OHX	Bedford, Cannon, Coffee, Grundy, Rutherford, Warren	40 min
Oct 19, 12:39 AM CDT	Severe Thunderstorm Warning	OHX	Cannon, Clay, DeKalb, Fentress, Jackson, Overton and 7 more	51 min
Oct 19, 1:22 AM CDT	Severe Thunderstorm Warning	OHX	Coffee, Grundy, Van Buren, Warren	38 min
Oct 19, 1:34 AM CDT	Severe Thunderstorm Warning	OHX	Cumberland, Fentress, Overton, Pickett, Putnam, Van Buren and 1 more	41 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive.