Alert archive / Tennessee / Tornado Warnings in 2021

Tornado Warning 42, NWS Nashville, TN

December 6, 2021Macon County, Smith County, Trousdale County, Tennessee

NWS Nashville, TN issued this tornado warning at Dec 6, 2021, 6:03 AM CST for Macon County, Smith County, Trousdale County, Tennessee. It was in force for 27 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
Dec 6, 2021, 6:03 AM CST (12:03 UTC)
Expired
Dec 6, 2021, 6:30 AM CST
In force
27 min
Issued by
NWS Nashville, TN
Area
Storm-based polygon
Tornado
Radar indicated
Hail
0.0 in

Counties Macon County, TN, Smith County, TN, Trousdale County, TN

The radar

The Nashville radar (KOHX), 45 km from the middle of the area, began a volume at 12:07 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 6, 6:04 AM CSTTSTM WND DMGHartsville, TNTREE DOWN BLOCKING THE ROAD ON RIVER STREET IN DOWNTOWN HARTSVILLE.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Nashville Metro, TN (KBNA), launched 12:00Z, 0.1 hours before the alert went out and 54 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 2021-12-06Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 250 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 2021-12-06The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 509 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
250 J/kg
Mixed-layer CIN
-10 J/kg
Mixed-layer LCL
665 m above ground
0-6 km bulk shear
62 kt
0-1 km storm-relative helicity
509 m²/s²
0-3 km storm-relative helicity
600 m²/s²
Significant tornado parameter
1.0
Supercell composite
3.8

Open this sounding in Storm Lab

The text

As transmitted.

985 
WFUS54 KOHX 061203
TOROHX
TNC111-159-169-061230-
/O.NEW.KOHX.TO.W.0042.211206T1203Z-211206T1230Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Nashville TN
603 AM CST Mon Dec 6 2021

The National Weather Service in Nashville has issued a

* Tornado Warning for...
  Northern Smith County in Middle Tennessee...
  Southern Macon County in Middle Tennessee...
  Trousdale County in Middle Tennessee...

* Until 630 AM CST.
    
* At 602 AM CST, a severe thunderstorm capable of producing a tornado
  was located near Hartsville, moving east at 45 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.

* Locations impacted include...
  Hartsville, Pleasant Shade and Dixon Springs. 

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 3636 8625 3644 8625 3650 8583 3626 8585
TIME...MOT...LOC 1202Z 271DEG 40KT 3638 8619 

TORNADO...RADAR INDICATED
MAX HAIL SIZE...0.00 IN

$$

Shamburger
1 follow-up statement
407 
WWUS54 KOHX 061211
SVSOHX

Severe Weather Statement
National Weather Service Nashville TN
611 AM CST Mon Dec 6 2021

TNC111-159-169-061230-
/O.CON.KOHX.TO.W.0042.000000T0000Z-211206T1230Z/
Smith TN-Macon TN-Trousdale TN-
611 AM CST Mon Dec 6 2021

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 630 AM CST FOR NORTHERN
SMITH...SOUTHEASTERN MACON AND SOUTHEASTERN TROUSDALE COUNTIES...
    
At 610 AM CST, a severe thunderstorm capable of producing a tornado
was located 5 miles east of Hartsville, moving east at 45 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.

Locations impacted include...
Cato, Pleasant Shade and Dixon Springs. 

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 3650 8583 3626 8585 3633 8612 3646 8612
TIME...MOT...LOC 1210Z 271DEG 40KT 3638 8607 

TORNADO...RADAR INDICATED
MAX HAIL SIZE...0.00 IN

$$

Shamburger

The office that day

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

IssuedProductOfficeCountiesLasted
Dec 5, 6:25 PM CSTSpecial Weather StatementOHXHickman35 min
Dec 6, 12:53 AM CSTSpecial Weather StatementOHXStewart52 min
Dec 6, 3:54 AM CSTSevere Thunderstorm WarningOHXHouston, Montgomery, Stewart51 min
Dec 6, 4:14 AM CSTTornado WarningOHXStewart16 min
Dec 6, 4:39 AM CSTSevere Thunderstorm WarningOHXCheatham, Dickson, Houston, Montgomery, Robertson41 min
Dec 6, 4:51 AM CSTTornado WarningOHXMontgomery, Robertson12 min
Dec 6, 5:09 AM CSTSevere Thunderstorm WarningOHXCheatham, Davidson, Dickson, Robertson, Sumner, Wilson36 min
Dec 6, 5:16 AM CSTSpecial Weather StatementOHXDickson, Hickman, Perry59 min
Dec 6, 5:46 AM CSTSpecial Weather StatementOHXMacon, Smith, Sumner, Trousdale, Wilson44 min
Dec 6, 6:02 AM CSTSevere Thunderstorm WarningOHXClay, Jackson, Macon, Smith, Trousdale, Wilson43 min
Dec 6, 6:32 AM CSTSevere Thunderstorm WarningOHXGiles, Lawrence, Wayne58 min
Dec 6, 6:38 AM CSTSevere Thunderstorm WarningOHXClay, Fentress, Jackson, Overton, Pickett, Putnam and 1 more37 min
Dec 6, 6:40 AM CSTTornado WarningOHXGiles, Lawrence35 min
Dec 6, 6:56 AM CSTTornado WarningOHXClay, Overton, Pickett19 min
Dec 6, 7:11 AM CSTSevere Thunderstorm WarningOHXCumberland, Fentress, Overton, Pickett, Putnam49 min
Dec 6, 7:15 AM CSTTornado WarningOHXFentress, Pickett30 min
Dec 6, 7:21 AM CSTSevere Thunderstorm WarningOHXBedford, Coffee, Giles, Marshall39 min
Dec 6, 7:40 AM CSTTornado WarningOHXBedford, Coffee21 min
Dec 6, 7:59 AM CSTSevere Thunderstorm WarningOHXCoffee, Grundy, Warren31 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.