Alert archive / Tennessee / Tornado Warnings in 2012

Tornado Warning 12, NWS Nashville, TN

February 29, 2012Houston County, Montgomery County, Stewart County, Tennessee

NWS Nashville, TN issued this tornado warning at Feb 29, 2012, 11:26 AM CST for Houston County, Montgomery County, Stewart County, Tennessee. It was in force for 34 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
Feb 29, 2012, 11:26 AM CST (17:26 UTC)
Expired
Feb 29, 2012, 12:00 PM CST
In force
34 min
Issued by
NWS Nashville, TN
Area
Storm-based polygon

Counties Houston County, TN, Montgomery County, TN, Stewart County, TN

The watch it was issued in

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

IssuedProductOfficeLasted
Feb 29, 4:39 AM CSTTornado WatchSPC7 hr

The nearest sounding before it

Nashville Metro, TN (KBNA), launched 12:00Z, 5.4 hours before the alert went out and 74 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-pSkew-T log-p diagram, Nashville Metro, TN at 12:00Z on 2012-02-29Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 580 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Nashville Metro, TN at 12:00Z on 2012-02-29The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 365 square meters per square second.1939587897Sfc1 km3 km6 km9 kmRMLM
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
580 J/kg
Mixed-layer CIN
-25 J/kg
Mixed-layer LCL
510 m above ground
0-6 km bulk shear
61 kt
0-1 km storm-relative helicity
365 m²/s²
0-3 km storm-relative helicity
485 m²/s²
Significant tornado parameter
1.9
Supercell composite
8.5

Open this sounding in Storm Lab

The text

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

832 
WFUS54 KOHX 291726
TOROHX
TNC083-125-161-291800-
/O.NEW.KOHX.TO.W.0012.120229T1726Z-120229T1800Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE NASHVILLE TN
1126 AM CST WED FEB 29 2012

THE NATIONAL WEATHER SERVICE IN NASHVILLE HAS ISSUED A

* TORNADO WARNING FOR...
  EASTERN HOUSTON COUNTY IN MIDDLE TENNESSEE...
  MONTGOMERY COUNTY IN MIDDLE TENNESSEE...
  SOUTHEASTERN STEWART COUNTY IN MIDDLE TENNESSEE...

* UNTIL NOON CST

* AT 1123 AM CST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THIS DANGEROUS
  STORM WAS LOCATED NEAR TENNESSEE RIDGE...OR NEAR ERIN...AND MOVING
  NORTHEAST AT 60 MPH.

* THIS DANGEROUS STORM WILL BE NEAR...
  CLARKSVILLE AROUND 1150 AM CST.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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.

&&

LAT...LON 3660 8712 3656 8714 3652 8711 3646 8712
      3644 8715 3642 8715 3643 8718 3641 8718
      3633 8741 3634 8751 3629 8752 3623 8771
      3625 8779 3637 8786 3665 8729 3665 8715
TIME...MOT...LOC 1726Z 245DEG 52KT 3633 8770

$$

SHAMBURGER
1 follow-up statement
977 
WWUS54 KOHX 291745
SVSOHX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE NASHVILLE TN
1145 AM CST WED FEB 29 2012

TNC083-161-291754-
/O.CAN.KOHX.TO.W.0012.000000T0000Z-120229T1800Z/
STEWART TN-HOUSTON TN-
1145 AM CST WED FEB 29 2012

...THE TORNADO WARNING FOR EASTERN HOUSTON AND SOUTHEASTERN STEWART
COUNTIES IS CANCELLED...

THE STORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF THE WARNED 
AREA.

LAT...LON 3665 8715 3660 8712 3656 8714 3652 8711
      3646 8712 3644 8715 3642 8715 3643 8718
      3641 8718 3633 8741 3634 8759 3649 8761
      3665 8729
TIME...MOT...LOC 1744Z 247DEG 46KT 3641 8746

$$

TNC125-291800-
/O.CON.KOHX.TO.W.0012.000000T0000Z-120229T1800Z/
MONTGOMERY TN-
1145 AM CST WED FEB 29 2012

...A TORNADO WARNING REMAINS IN EFFECT FOR MONTGOMERY COUNTY UNTIL
NOON CST...

AT 1142 AM CST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO.  THIS DANGEROUS
STORM WAS LOCATED 13 MILES NORTHEAST OF ERIN...MOVING NORTHEAST AT 55
MPH.

LOCATIONS IMPACTED INCLUDE...
  CLARKSVILLE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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.

&&

LAT...LON 3665 8715 3660 8712 3656 8714 3652 8711
      3646 8712 3644 8715 3642 8715 3643 8718
      3641 8718 3633 8741 3634 8759 3649 8761
      3665 8729
TIME...MOT...LOC 1744Z 247DEG 46KT 3641 8746

$$

SHAMBURGER

The office that day

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

IssuedProductOfficeCountiesLasted
Feb 29, 10:35 AM CSTSpecial Weather StatementOHXStewart55 min
Feb 29, 2:40 PM CSTSpecial Weather StatementOHXPickett35 min
Feb 29, 3:04 PM CSTSevere Thunderstorm WarningOHXJackson, Overton, Putnam, Smith26 min
Feb 29, 3:30 PM CSTSevere Thunderstorm WarningOHXCumberland, Fentress, Jackson, Overton, Pickett, Putnam45 min
Feb 29, 3:33 PM CSTSevere Thunderstorm WarningOHXCannon, DeKalb, Putnam, Smith, White, Wilson27 min
Feb 29, 3:38 PM CSTSevere Thunderstorm WarningOHXCannon, DeKalb, Putnam, Rutherford, Smith, White and 1 more37 min
Feb 29, 3:46 PM CSTTornado WarningOHXDeKalb, Putnam, White29 min
Feb 29, 4:09 PM CSTTornado WarningOHXCumberland, Fentress, Overton, Putnam, White36 min
Feb 29, 5:14 PM CSTSevere Thunderstorm WarningOHXGrundy16 min

Nearby

Tornado Warnings in Tennessee, 2012Every tornado warning in 2012Tornadoes in 2012

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.