Alert archive / Tennessee / Tornado Warnings in 2012

Tornado Warning 62, NWS Nashville, TN

September 17, 2012Van Buren County, Warren County, White County, Tennessee

NWS Nashville, TN issued this tornado warning at Sep 17, 2012, 4:28 PM CDT for Van Buren County, Warren County, White County, Tennessee. 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
Sep 17, 2012, 4:28 PM CDT (21:28 UTC)
Expired
Sep 17, 2012, 5:00 PM CDT
In force
32 min
Issued by
NWS Nashville, TN
Area
Storm-based polygon

Counties Van Buren County, TN, Warren County, TN, White County, TN

The radar

The Nashville radar (KOHX), 102 km from the middle of the area, began a volume at 21:30 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 nearest sounding before it

Nashville Metro, TN (KBNA), launched 12:00Z, 9.5 hours before the alert went out and 100 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 2012-09-17Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 491 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 2012-09-17The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 19 square meters per square second.193958Sfc1 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
491 J/kg
Mixed-layer CIN
-3 J/kg
Mixed-layer LCL
510 m above ground
0-6 km bulk shear
30 kt
0-1 km storm-relative helicity
19 m²/s²
0-3 km storm-relative helicity
38 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.1

Open this sounding in Storm Lab

The text

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

871 
WFUS54 KOHX 172128
TOROHX
TNC175-177-185-172200-
/O.NEW.KOHX.TO.W.0062.120917T2128Z-120917T2200Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE NASHVILLE TN
428 PM CDT MON SEP 17 2012

THE NATIONAL WEATHER SERVICE IN NASHVILLE HAS ISSUED A

* TORNADO WARNING FOR...
  NORTHWESTERN VAN BUREN COUNTY IN MIDDLE TENNESSEE...
  NORTHEASTERN WARREN COUNTY IN MIDDLE TENNESSEE...
  SOUTHWESTERN WHITE COUNTY IN MIDDLE TENNESSEE...

* UNTIL 500 PM CDT

* AT 420 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THIS DANGEROUS
  STORM WAS LOCATED 9 MILES NORTHEAST OF MCMINNVILLE...AND MOVING
  NORTHEAST AT 20 MPH.

* LOCATIONS IMPACTED INCLUDE...
  DOYLE.

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 3595 8553 3583 8535 3571 8562 3577 8569
TIME...MOT...LOC 2128Z 223DEG 17KT 3579 8561

$$

13
1 follow-up statement
208 
WWUS54 KOHX 172151
SVSOHX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE NASHVILLE TN
451 PM CDT MON SEP 17 2012

TNC175-177-185-172201-
/O.EXP.KOHX.TO.W.0062.000000T0000Z-120917T2200Z/
VAN BUREN TN-WARREN TN-WHITE TN-
451 PM CDT MON SEP 17 2012

...THE TORNADO WARNING FOR SOUTHWESTERN WHITE...NORTHEASTERN WARREN
AND NORTHWESTERN VAN BUREN COUNTIES WILL EXPIRE AT 500 PM CDT...

THE STORM WHICH PROMPTED THE WARNING HAS WEAKENED BELOW SEVERE
LIMITS...AND NO LONGER POSES AN IMMEDIATE THREAT TO LIFE OR PROPERTY.
 HOWEVER HEAVY RAIN IS STILL POSSIBLE WITH THIS THUNDERSTORM.

LAT...LON 3595 8553 3583 8535 3571 8562 3577 8569
TIME...MOT...LOC 2151Z 223DEG 17KT 3587 8552

$$

13

The office that day

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

IssuedProductOfficeCountiesLasted
Sep 17, 2:48 AM CDTFlood WatchOHXBedford, Cannon, Clay, Coffee, Cumberland, Davidson and 23 more27 hr
Sep 17, 11:41 AM CDTAreal Flood AdvisoryOHXGiles, Hickman, Lawrence, Lewis, Marshall, Maury and 1 more6 hr
Sep 17, 1:46 PM CDTTornado WarningOHXBedford29 min
Sep 17, 2:11 PM CDTFlash Flood WarningOHXGiles, Marshall3 hr
Sep 17, 2:55 PM CDTAreal Flood AdvisoryOHXBedford, Rutherford, Williamson6 hr
Sep 17, 3:55 PM CDTTornado WarningOHXBedford35 min
Sep 17, 3:56 PM CDTTornado WarningOHXCannon, Coffee, Warren34 min
Sep 17, 3:57 PM CDTTornado WarningOHXVan Buren, Warren, White33 min
Sep 17, 4:06 PM CDTTornado WarningOHXCoffee54 min
Sep 17, 4:26 PM CDTTornado WarningOHXDeKalb, Warren, White34 min
Sep 17, 4:43 PM CDTTornado WarningOHXCannon, Warren47 min
Sep 17, 6:15 PM CDTAreal Flood AdvisoryOHXCannon, Coffee, DeKalb, Jackson, Overton, Putnam and 2 more4 hr

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; radar from the NEXRAD Level II archive.