Alert archive / Tennessee / Tornado Warnings in 2021

Tornado Warning 60, NWS Nashville, TN

December 11, 20216 counties in Tennessee

NWS Nashville, TN issued this tornado warning at Dec 11, 2021, 4:07 AM CST for 6 counties in Tennessee. It was in force for 38 min. 7 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
Dec 11, 2021, 4:07 AM CST (10:07 UTC)
Expired
Dec 11, 2021, 4:45 AM CST
In force
38 min
Issued by
NWS Nashville, TN
Area
Storm-based polygon
Tornado
Radar indicated
Hail
0.75 in

Counties Clay County, TN, Jackson County, TN, Macon County, TN, Overton County, TN, Smith County, TN, Trousdale County, TN

The radar

The Nashville radar (KOHX), 79 km from the middle of the area, began a volume at 10:08 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
Dec 11, 4:12 AM CSTTSTM WND DMG8 E Carthage, TNTREES DOWN IN MULTIPLE AREAS IN JACKSON COUNTY WITH MANY DOWN IN THE GRANVILLE AREA.
Dec 11, 4:16 AM CSTTSTM WND DMGGainesboro, TN40 X 60 FT POLE BARN DESTROYED IN GAINESBORO.
Dec 11, 4:20 AM CSTTSTM WND DMG6 Ne Red Boiling Spring, TNA FEW HOMES DAMAGED. POWER LINES, TREES, AND BARNS DESTROYED ALONG HWY 52 BETWEEN HILL TOP ROAD AND CLEMENTSVILLE KY ROAD.
Dec 11, 4:20 AM CSTTORNADO5 Ne Red Boiling Spring, TNTHE TORNADO TOUCHED DOWN IN HERMITAGE SPRINGS JUST SOUTH OF HIGHWAY 52 WHERE IT UPROOTED TREES. IT PARALLELED HIGHWAY 52, CONTINUING TO UPROOT TREES AND CAUSING SHINGLE DAMAGE TO MULTIPLE HOMES. THE WORST DAMAGE OCCURRED ALONG THE NORTH SIDE OF THE HIGHWAY WHE
Dec 11, 4:20 AM CSTTORNADO5 Ne Red Boiling Spring, TNTHE TORNADO TOUCHED DOWN IN HERMITAGE SPRINGS JUST SOUTH OF HIGHWAY 52 WHERE IT UPROOTED TREES. IT PARALLELED HIGHWAY 52, CONTINUING TO UPROOT TREES AND CAUSING SHINGLE DAMAGE TO MULTIPLE HOMES. THE WORST DAMAGE OCCURRED ALONG THE NORTH SIDE OF THE HIGHWAY WHE
Dec 11, 4:22 AM CSTTSTM WND DMG8 Ne Red Boiling Spring, TNTREES DOWN NEAR OLD CLEMENTSVILLE ROAD, DAMAGE TO CHICKEN HOUSES.
Dec 11, 4:30 AM CSTTSTM WND DMG6 W Livingston, TNTREE FELL ACROSS HWY 136.

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
Dec 10, 6:21 PM CSTTornado WatchSPC10 hr
Dec 10, 10:44 PM CSTTornado WatchSPC6 hr
Dec 11, 3:41 AM CSTTornado WatchSPC6 hr

The nearest sounding before it

Nashville Metro, TN (KBNA), launched 00:00Z, 10.1 hours before the alert went out and 86 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 00:00Z on 2021-12-11Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 182 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 00:00Z on 2021-12-11The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 391 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
182 J/kg
Mixed-layer CIN
-168 J/kg
Mixed-layer LCL
593 m above ground
0-6 km bulk shear
58 kt
0-1 km storm-relative helicity
391 m²/s²
0-3 km storm-relative helicity
370 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.5

Open this sounding in Storm Lab

The text

As transmitted.

231 
WFUS54 KOHX 111007
TOROHX
TNC027-087-111-133-159-169-111045-
/O.NEW.KOHX.TO.W.0060.211211T1007Z-211211T1045Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Nashville TN
407 AM CST Sat Dec 11 2021

The National Weather Service in Nashville has issued a

* Tornado Warning for...
  Northwestern Overton County in Middle Tennessee...
  Smith County in Middle Tennessee...
  Jackson County in Middle Tennessee...
  Clay County in Middle Tennessee...
  Southeastern Macon County in Middle Tennessee...
  Central Trousdale County in Middle Tennessee...

* Until 445 AM CST.
    
* At 405 AM CST, a line of severe thunderstorms capable of producing 
  tornadoes was located near Hartsville southward toward Carthage, 
  moving northeast at 55 mph.

  HAZARD...Tornado.

  SOURCE...Radar indicated rotation.

  IMPACT...Flying debris will be dangerous to those caught without 
           shelter. Mobile homes will be damaged or destroyed. 
           Damage to roofs, windows, and vehicles will occur.  Tree 
           damage is likely.

* This dangerous storm will be near...
  Red Boiling Springs around 425 AM CST.
  Celina around 440 AM CST.

Other locations impacted by this tornadic thunderstorm include
Whitleyville, Moss, Dixon Springs, Pleasant Shade, Granville, South
Carthage and Standing Stone State Park.

This includes Interstate 40 between mile markers 251 and 258.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.

&&

LAT...LON 3635 8537 3623 8576 3625 8578 3623 8578
      3614 8607 3644 8617 3662 8578 3661 8551
      3662 8540
TIME...MOT...LOC 1005Z 244DEG 47KT 3639 8605 

TORNADO...RADAR INDICATED
MAX HAIL SIZE...<.75 IN

$$

10
2 follow-up statements
393 
WWUS54 KOHX 111023
SVSOHX

Severe Weather Statement
National Weather Service Nashville TN
423 AM CST Sat Dec 11 2021

TNC111-159-169-111033-
/O.CAN.KOHX.TO.W.0060.000000T0000Z-211211T1045Z/
Smith TN-Macon TN-Trousdale TN-
423 AM CST Sat Dec 11 2021

...THE TORNADO WARNING FOR SMITH...SOUTHEASTERN MACON AND CENTRAL
TROUSDALE COUNTIES IS CANCELLED...
    
The tornadic thunderstorm which prompted the warning has moved out 
of the warned area. Therefore, the warning has been cancelled.

A Tornado Watch remains in effect until 1100 AM CST for Middle
Tennessee.

LAT...LON 3635 8537 3623 8576 3625 8578 3632 8579
      3651 8578 3662 8578 3661 8551 3662 8540
TIME...MOT...LOC 1023Z 244DEG 47KT 3650 8578 

$$

TNC027-087-133-111045-
/O.CON.KOHX.TO.W.0060.000000T0000Z-211211T1045Z/
Overton TN-Jackson TN-Clay TN-
423 AM CST Sat Dec 11 2021

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 445 AM CST FOR
NORTHWESTERN OVERTON...JACKSON AND CLAY COUNTIES...
    
At 423 AM CST, a severe thunderstorm capable of producing a tornado
was located near Red Boiling Springs, or 11 miles northwest of
Gainesboro, moving northeast at 55 mph.

HAZARD...Tornado.

SOURCE...Radar indicated rotation.

IMPACT...Flying debris will be dangerous to those caught without 
         shelter. Mobile homes will be damaged or destroyed. Damage 
         to roofs, windows, and vehicles will occur.  Tree damage is 
         likely.

This dangerous storm will be near...
  Celina around 440 AM CST.

Other locations impacted by this tornadic thunderstorm include
Whitleyville, Moss and Standing Stone State Park.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.

&&

LAT...LON 3635 8537 3623 8576 3625 8578 3632 8579
      3651 8578 3662 8578 3661 8551 3662 8540
TIME...MOT...LOC 1023Z 244DEG 47KT 3650 8578 

TORNADO...RADAR INDICATED
MAX HAIL SIZE...<.75 IN

$$

10
313 
WWUS54 KOHX 111043
SVSOHX

Severe Weather Statement
National Weather Service Nashville TN
443 AM CST Sat Dec 11 2021

TNC027-087-133-111053-
/O.EXP.KOHX.TO.W.0060.000000T0000Z-211211T1045Z/
Overton TN-Jackson TN-Clay TN-
443 AM CST Sat Dec 11 2021

...THE TORNADO WARNING FOR NORTHWESTERN OVERTON...JACKSON AND CLAY
COUNTIES WILL EXPIRE AT 445 AM CST...
        
The storm which prompted the warning has moved out of the area.
Therefore, the warning will be allowed to expire.

A Tornado Watch remains in effect until 1100 AM CST for Middle
Tennessee.

LAT...LON 3635 8537 3623 8576 3625 8578 3632 8579
      3651 8578 3662 8578 3661 8551 3662 8540
TIME...MOT...LOC 1043Z 244DEG 47KT 3661 8549 

$$

10

The office that day

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

IssuedProductOfficeCountiesLasted
Dec 10, 11:29 PM CSTTornado Warning Tornado observedOHXStewart46 min
Dec 11, 12:03 AM CSTTornado Warning Tornado observedConsiderable damage threatOHXMontgomery, Stewart16 min
Dec 11, 12:19 AM CSTSevere Thunderstorm WarningOHXMontgomery, Stewart41 min
Dec 11, 1:28 AM CSTSevere Thunderstorm WarningOHXStewart21 min
Dec 11, 1:47 AM CSTSevere Thunderstorm Warning Considerable damage threatOHXDickson, Hickman, Houston, Humphreys, Lewis, Montgomery and 2 more73 min
Dec 11, 2:03 AM CSTTornado WarningOHXHouston, Humphreys, Stewart27 min
Dec 11, 2:07 AM CSTTornado WarningOHXDickson, Hickman, Humphreys, Perry38 min
Dec 11, 2:23 AM CSTTornado WarningOHXDickson, Houston, Montgomery, Stewart37 min
Dec 11, 2:38 AM CSTTornado WarningOHXDickson, Hickman, Humphreys37 min
Dec 11, 2:39 AM CSTTornado WarningOHXCheatham, Dickson, Montgomery14 min
Dec 11, 2:47 AM CSTSevere Thunderstorm WarningOHXCheatham, Davidson, Dickson, Hickman, Lewis, Maury and 5 more58 min
Dec 11, 2:58 AM CSTTornado WarningOHXCheatham, Davidson, Dickson, Williamson32 min
Dec 11, 2:59 AM CSTTornado WarningOHXDavidson, Williamson31 min
Dec 11, 3:19 AM CSTSevere Thunderstorm WarningOHXDavidson, Hickman, Lewis, Marshall, Maury, Robertson and 5 more41 min
Dec 11, 3:21 AM CSTTornado WarningOHXDavidson, Sumner, Wilson39 min
Dec 11, 3:29 AM CSTSevere Thunderstorm Warning Destructive damage threatOHXDavidson, Rutherford, Smith, Sumner, Trousdale, Williamson and 1 more46 min
Dec 11, 3:33 AM CSTTornado WarningOHXDavidson, Macon, Smith, Sumner, Trousdale, Wilson42 min
Dec 11, 3:46 AM CSTTornado WarningOHXClay, Macon, Sumner, Trousdale44 min
Dec 11, 3:48 AM CSTSevere Thunderstorm WarningOHXLewis, Perry, Wayne42 min
Dec 11, 3:50 AM CSTSevere Thunderstorm Warning Considerable damage threatOHXClay, DeKalb, Jackson, Macon, Putnam, Smith and 3 more17 min
Dec 11, 3:56 AM CSTTornado WarningOHXLewis, Perry, Wayne13 min
Dec 11, 4:11 AM CSTSevere Thunderstorm Warning Considerable damage threatOHXClay, Fentress, Jackson, Macon, Overton, Pickett and 4 more34 min
Dec 11, 4:33 AM CSTTornado WarningOHXClay, Fentress, Overton, Pickett42 min
Dec 11, 5:01 AM CSTSevere Thunderstorm WarningOHXGiles, Lawrence, Lewis, Marshall, Maury29 min
Dec 11, 5:21 AM CSTSevere Thunderstorm WarningOHXOverton, Putnam27 min
Dec 11, 5:39 AM CSTSevere Thunderstorm WarningOHXGiles, Lawrence, Wayne36 min
Dec 11, 5:56 AM CSTSevere Thunderstorm WarningOHXGiles, Lawrence, Marshall, Maury34 min
Dec 11, 6:13 AM CSTTornado WarningOHXGiles15 min
Dec 11, 6:58 AM CSTSevere Thunderstorm WarningOHXBedford, Coffee, Grundy, Warren32 min
Dec 11, 7:22 AM CSTSevere Thunderstorm WarningOHXCoffee, Grundy38 min
Dec 11, 7:35 AM CSTTornado WarningOHXGrundy25 min

Nearby

Tornado Warnings in Tennessee, 2021Every tornado warning in 2021Tornadoes in 2021

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.