Alert archive / Tennessee / Tornado Warnings in 2013

Tornado Warning 28, NWS Nashville, TN

March 18, 2013Bedford County, Marshall County, Maury County, Tennessee

NWS Nashville, TN issued this tornado warning at Mar 18, 2013, 11:23 AM CDT for Bedford County, Marshall County, Maury County, Tennessee. It was in force for 37 min. 1 report 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
Mar 18, 2013, 11:23 AM CDT (16:23 UTC)
Expired
Mar 18, 2013, 12:00 PM CDT
In force
37 min
Issued by
NWS Nashville, TN
Area
Storm-based polygon

Counties Bedford County, TN, Marshall County, TN, Maury County, TN

The radar

The Nashville radar (KOHX), 91 km from the middle of the area, began a volume at 16:25 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.

What was reported inside it

TimeReportWhereRemark
Mar 18, 11:47 AM CDTTORNADO4 Se Chapel Hill, TNAN EF0 TORNADO TOUCHED DOWN ABOUT 4.6 MILES SOUTHWEST OF UNIONVILLE WHERE A FEW TREES WERE BLOWN DOWN AND A BARN DAMAGED ON MOON BEND ROAD. MORE TREES WERE BLOWN DOWN AND AN OUTBUILDING BLOWN OVER ON HIGHWAY 270. A BARN LOST ITS ROOF AND SEVERAL MORE TREES WER

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.

IssuedProductOfficeLasted
Mar 18, 8:09 AM CDTSevere Thunderstorm WatchSPC7 hr

The nearest sounding before it

Nashville Metro, TN (KBNA), launched 12:00Z, 4.4 hours before the alert went out and 77 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 2013-03-18Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 188 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 2013-03-18The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 376 square meters per square second.19395878Sfc1 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
188 J/kg
Mixed-layer CIN
-94 J/kg
Mixed-layer LCL
810 m above ground
0-6 km bulk shear
46 kt
0-1 km storm-relative helicity
376 m²/s²
0-3 km storm-relative helicity
366 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.7

Open this sounding in Storm Lab

The text

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

066 
WFUS54 KOHX 181623
TOROHX
TNC003-117-119-181700-
/O.NEW.KOHX.TO.W.0028.130318T1623Z-130318T1700Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE NASHVILLE TN
1123 AM CDT MON MAR 18 2013

THE NATIONAL WEATHER SERVICE IN NASHVILLE HAS ISSUED A

* TORNADO WARNING FOR...
  NORTHWESTERN BEDFORD COUNTY IN MIDDLE TENNESSEE...
  CENTRAL MARSHALL COUNTY IN MIDDLE TENNESSEE...
  SOUTHEASTERN MAURY COUNTY IN MIDDLE TENNESSEE...

* UNTIL NOON CDT

* AT 1120 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THIS DANGEROUS
  STORM WAS LOCATED 10 MILES NORTHWEST OF LEWISBURG...AND MOVING EAST
  AT 30 MPH.

* LOCATIONS IMPACTED INCLUDE...
  LEWISBURG...FARMINGTON...CHAPEL HILL...UNIONVILLE AND ROVER.

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 3542 8698 3556 8702 3568 8659 3545 8654
      3541 8695 3542 8695 3541 8697
TIME...MOT...LOC 1623Z 254DEG 27KT 3551 8692

$$

13
3 follow-up statements
883 
WWUS54 KOHX 181638
SVSOHX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE NASHVILLE TN
1138 AM CDT MON MAR 18 2013

TNC119-181647-
/O.CAN.KOHX.TO.W.0028.000000T0000Z-130318T1700Z/
MAURY TN-
1138 AM CDT MON MAR 18 2013

...THE TORNADO WARNING FOR SOUTHEASTERN MAURY COUNTY IS CANCELLED...

THE STORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF MAURY COUNTY.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 300 PM CDT MONDAY
AFTERNOON FOR MIDDLE TENNESSEE.

LAT...LON 3542 8688 3560 8680 3568 8659 3545 8654
TIME...MOT...LOC 1637Z 254DEG 27KT 3554 8680

$$

TNC003-117-181700-
/O.CON.KOHX.TO.W.0028.000000T0000Z-130318T1700Z/
BEDFORD TN-MARSHALL TN-
1138 AM CDT MON MAR 18 2013

...A TORNADO WARNING REMAINS IN EFFECT FOR CENTRAL MARSHALL AND
NORTHWESTERN BEDFORD COUNTIES UNTIL NOON CDT...

AT 1134 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO.  THIS DANGEROUS
STORM WAS LOCATED 6 MILES NORTH OF LEWISBURG...MOVING EAST AT 30 MPH.

LOCATIONS IMPACTED INCLUDE...
  FARMINGTON...CHAPEL HILL...UNIONVILLE AND ROVER.

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.

&&

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 300 PM CDT MONDAY
AFTERNOON FOR MIDDLE TENNESSEE.

LAT...LON 3542 8688 3560 8680 3568 8659 3545 8654
TIME...MOT...LOC 1637Z 254DEG 27KT 3554 8680

$$

13
111 
WWUS54 KOHX 181651
SVSOHX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE NASHVILLE TN
1151 AM CDT MON MAR 18 2013

TNC117-181701-
/O.CAN.KOHX.TO.W.0028.000000T0000Z-130318T1700Z/
MARSHALL TN-
1151 AM CDT MON MAR 18 2013

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

THE STORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF MARSHALL 
COUNTY.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 300 PM CDT MONDAY
AFTERNOON FOR CENTRAL TENNESSEE.

LAT...LON 3562 8665 3568 8659 3553 8657 3553 8665
TIME...MOT...LOC 1651Z 254DEG 27KT 3560 8661

$$

TNC003-181700-
/O.CON.KOHX.TO.W.0028.000000T0000Z-130318T1700Z/
BEDFORD TN-
1151 AM CDT MON MAR 18 2013

...A TORNADO WARNING REMAINS IN EFFECT FOR NORTHWESTERN BEDFORD
COUNTY UNTIL NOON CDT...

AT 1148 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO.  THIS DANGEROUS
STORM WAS LOCATED 13 MILES NORTHWEST OF SHELBYVILLE...MOVING EAST AT
30 MPH.

LOCATIONS IMPACTED INCLUDE...
  UNIONVILLE.

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.

&&

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 300 PM CDT MONDAY
AFTERNOON FOR CENTRAL TENNESSEE.

LAT...LON 3562 8665 3568 8659 3553 8657 3553 8665
TIME...MOT...LOC 1651Z 254DEG 27KT 3560 8661

$$

13
671 
WWUS54 KOHX 181656
SVSOHX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE NASHVILLE TN
1156 AM CDT MON MAR 18 2013

TNC003-181705-
/O.EXP.KOHX.TO.W.0028.000000T0000Z-130318T1700Z/
BEDFORD TN-
1156 AM CDT MON MAR 18 2013

...THE TORNADO WARNING FOR NORTHWESTERN BEDFORD COUNTY WILL EXPIRE AT
NOON CDT...

THE STORM WHICH PROMPTED THE WARNING HAS WEAKENED AND WILL BE MOVING 
OUT OF THE WARNED AREA.  

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 300 PM CDT MONDAY
AFTERNOON FOR MIDDLE TENNESSEE.

LAT...LON 3562 8665 3568 8659 3553 8657 3553 8665
TIME...MOT...LOC 1655Z 254DEG 27KT 3561 8657

$$

13

The office that day

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

IssuedProductOfficeCountiesLasted
Mar 18, 5:16 AM CDTSpecial Weather StatementOHXDickson, Houston, Humphreys29 min
Mar 18, 6:07 AM CDTSpecial Weather StatementOHXCheatham, Dickson, Houston, Montgomery, Robertson38 min
Mar 18, 7:22 AM CDTSevere Thunderstorm WarningOHXBenton, Dickson, Houston, Humphreys38 min
Mar 18, 7:51 AM CDTTornado WarningOHXDickson, Montgomery24 min
Mar 18, 8:05 AM CDTTornado WarningOHXCheatham, Davidson, Dickson, Robertson25 min
Mar 18, 8:15 AM CDTSevere Thunderstorm WarningOHXCheatham, Davidson, Dickson, Williamson45 min
Mar 18, 9:00 AM CDTSpecial Weather StatementOHXMacon, Rutherford, Sumner, Trousdale, Williamson, Wilson45 min
Mar 18, 9:21 AM CDTSevere Thunderstorm WarningOHXClay, Jackson, Macon, Smith, Sumner, Trousdale and 1 more39 min
Mar 18, 10:03 AM CDTSpecial Weather StatementOHXClay, Fentress, Jackson, Overton, Pickett, Putnam42 min
Mar 18, 11:13 AM CDTSpecial Weather StatementOHXMaury47 min
Mar 18, 11:18 AM CDTSevere Thunderstorm WarningOHXGiles, Marshall, Maury42 min
Mar 18, 12:01 PM CDTSpecial Weather StatementOHXGiles44 min
Mar 18, 12:15 PM CDTTornado WarningOHXCannon, Rutherford30 min

Nearby

Tornado Warnings in Tennessee, 2013Every tornado warning in 2013Tornadoes in 2013

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; radar from the NEXRAD Level II archive.