Alert archive / Tennessee / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 150, NWS Nashville, TN

December 6, 20214 counties in Tennessee

NWS Nashville, TN issued this severe thunderstorm warning at Dec 6, 2021, 7:21 AM CST for 4 counties in Tennessee. It was in force for 39 min. 3 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 6, 2021, 7:21 AM CST (13:21 UTC)
Expired: Dec 6, 2021, 8:00 AM CST
In force: 39 min
Issued by: NWS Nashville, TN
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

Counties Bedford County, TN, Coffee County, TN, Giles County, TN, Marshall County, TN

The radar

The Northeast Alabama radar (KHTX), 57 km from the middle of the area, began a volume at 13:20 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

Time	Report	Where	Remark
Dec 6, 7:40 AM CST	TORNADO	6 Sw Normandy, TN	THIS TORNADO TOUCHED DOWN IN THE RAUS COMMUNITY NEAR SMITH CHAPEL ROAD AT ELIJAH PARKER ROAD IN FAR SOUTHERN BEDFORD COUNTY, WHERE IT CAUSED EF0 DAMAGE INCLUDING BLOWING DOWN A WALL AT THE RAUS COMMUNITY CENTER AND KNOCKING DOWN TREES ON POWELL HOLLOW ROAD. MO
Dec 6, 7:48 AM CST	TSTM WND DMG	2 Ne Tullahoma, TN	BRECKENRIDGE COMMUNITY TREES DOWN. TIME ESTIMATED VIA RADAR.
Dec 6, 7:53 AM CST	TSTM WND DMG	Tullahoma, TN	REPORT OF TREES AND POWERLINES DOWN ON MARBURY ROAD.

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, 1.4 hours before the alert went out and 87 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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.

008 
WUUS54 KOHX 061321
SVROHX
TNC003-031-055-117-061400-
/O.NEW.KOHX.SV.W.0150.211206T1321Z-211206T1400Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Nashville TN
721 AM CST Mon Dec 6 2021

The National Weather Service in Nashville has issued a

* Severe Thunderstorm Warning for...
  Southern Marshall County in Middle Tennessee...
  Southwestern Coffee County in Middle Tennessee...
  Northeastern Giles County in Middle Tennessee...
  Southern Bedford County in Middle Tennessee...

* Until 800 AM CST.

* At 721 AM CST, a severe thunderstorm was located near Lewisburg,
  moving east at 50 mph.

  HAZARD...60 mph wind gusts.

  SOURCE...Radar indicated.

  IMPACT...Expect damage to roofs, siding, and trees.

* Locations impacted include...
  Shelbyville, Lewisburg, Tullahoma, Cornersville, Wartrace,
  Normandy, Belfast, Raus, Farmington and Arnold AFB.

This includes the following highways...
 Interstate 65 between mile markers 20 and 25.
 Interstate 24 between mile markers 104 and 105.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

&&

LAT...LON 3527 8692 3551 8681 3555 8616 3535 8609
      3536 8616 3534 8620 3534 8626 3535 8624
      3537 8628 3538 8625 3539 8628 3541 8625
      3541 8628 3535 8641 3532 8642 3536 8649
      3537 8659 3533 8660 3531 8668 3527 8673
TIME...MOT...LOC 1321Z 266DEG 44KT 3539 8671 

HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

10

2 follow-up statements

108 
WWUS54 KOHX 061337
SVSOHX

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

TNC055-117-061346-
/O.CAN.KOHX.SV.W.0150.000000T0000Z-211206T1400Z/
Marshall TN-Giles TN-
737 AM CST Mon Dec 6 2021

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHERN MARSHALL AND
NORTHEASTERN GILES COUNTIES IS CANCELLED...
    
The severe thunderstorm which prompted the warning has moved out of 
the warned area. Therefore, the warning has been cancelled.

LAT...LON 3541 8657 3553 8654 3555 8616 3535 8609
      3536 8616 3534 8620 3534 8626 3535 8624
      3537 8628 3538 8625 3539 8628 3541 8625
      3541 8628 3535 8641 3532 8642 3536 8649
      3537 8657
TIME...MOT...LOC 1336Z 266DEG 44KT 3540 8648 

$$

TNC003-031-061400-
/O.CON.KOHX.SV.W.0150.000000T0000Z-211206T1400Z/
Coffee TN-Bedford TN-
737 AM CST Mon Dec 6 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 800 AM CST
FOR SOUTHWESTERN COFFEE AND SOUTHERN BEDFORD COUNTIES...

At 736 AM CST, a severe thunderstorm was located near Shelbyville,
moving east at 50 mph.

HAZARD...60 mph wind gusts.

SOURCE...Radar indicated.

IMPACT...Expect damage to roofs, siding, and trees.

Locations impacted include...
Shelbyville, Tullahoma, Wartrace, Normandy, Raus and Arnold AFB. 

This includes Interstate 24 between mile markers 104 and 105.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

&&

LAT...LON 3541 8657 3553 8654 3555 8616 3535 8609
      3536 8616 3534 8620 3534 8626 3535 8624
      3537 8628 3538 8625 3539 8628 3541 8625
      3541 8628 3535 8641 3532 8642 3536 8649
      3537 8657
TIME...MOT...LOC 1336Z 266DEG 44KT 3540 8648 

HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

10

935 
WWUS54 KOHX 061349
SVSOHX

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

TNC003-031-061400-
/O.CON.KOHX.SV.W.0150.000000T0000Z-211206T1400Z/
Coffee TN-Bedford TN-
749 AM CST Mon Dec 6 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 800 AM CST
FOR SOUTHWESTERN COFFEE AND EAST CENTRAL BEDFORD COUNTIES...

At 748 AM CST, a severe thunderstorm was located near Tullahoma, or
10 miles northeast of Lynchburg, moving east at 50 mph.

HAZARD...60 mph wind gusts.

SOURCE...Radar indicated.

IMPACT...Expect damage to roofs, siding, and trees.

Locations impacted include...
Tullahoma, Normandy and Arnold AFB. 

This includes Interstate 24 between mile markers 104 and 105.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

&&

LAT...LON 3554 8629 3555 8616 3535 8609 3536 8616
      3534 8620 3534 8626 3535 8624 3537 8628
      3538 8625 3539 8628 3541 8625 3541 8630
      3546 8630
TIME...MOT...LOC 1348Z 266DEG 44KT 3541 8629 

HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

10

The office that day

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

Issued	Product	Office	Counties	Lasted
Dec 5, 6:25 PM CST	Special Weather Statement	OHX	Hickman	35 min
Dec 6, 12:53 AM CST	Special Weather Statement	OHX	Stewart	52 min
Dec 6, 3:54 AM CST	Severe Thunderstorm Warning	OHX	Houston, Montgomery, Stewart	51 min
Dec 6, 4:14 AM CST	Tornado Warning	OHX	Stewart	16 min
Dec 6, 4:39 AM CST	Severe Thunderstorm Warning	OHX	Cheatham, Dickson, Houston, Montgomery, Robertson	41 min
Dec 6, 4:51 AM CST	Tornado Warning	OHX	Montgomery, Robertson	12 min
Dec 6, 5:09 AM CST	Severe Thunderstorm Warning	OHX	Cheatham, Davidson, Dickson, Robertson, Sumner, Wilson	36 min
Dec 6, 5:16 AM CST	Special Weather Statement	OHX	Dickson, Hickman, Perry	59 min
Dec 6, 5:46 AM CST	Special Weather Statement	OHX	Macon, Smith, Sumner, Trousdale, Wilson	44 min
Dec 6, 6:02 AM CST	Severe Thunderstorm Warning	OHX	Clay, Jackson, Macon, Smith, Trousdale, Wilson	43 min
Dec 6, 6:03 AM CST	Tornado Warning	OHX	Macon, Smith, Trousdale	27 min
Dec 6, 6:32 AM CST	Severe Thunderstorm Warning	OHX	Giles, Lawrence, Wayne	58 min
Dec 6, 6:38 AM CST	Severe Thunderstorm Warning	OHX	Clay, Fentress, Jackson, Overton, Pickett, Putnam and 1 more	37 min
Dec 6, 6:40 AM CST	Tornado Warning	OHX	Giles, Lawrence	35 min
Dec 6, 6:56 AM CST	Tornado Warning	OHX	Clay, Overton, Pickett	19 min
Dec 6, 7:11 AM CST	Severe Thunderstorm Warning	OHX	Cumberland, Fentress, Overton, Pickett, Putnam	49 min
Dec 6, 7:15 AM CST	Tornado Warning	OHX	Fentress, Pickett	30 min
Dec 6, 7:40 AM CST	Tornado Warning	OHX	Bedford, Coffee	21 min
Dec 6, 7:59 AM CST	Severe Thunderstorm Warning	OHX	Coffee, Grundy, Warren	31 min

Nearby

Severe Thunderstorm Warnings in Tennessee, 2021 Every severe thunderstorm warning 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.