Alert archive / Tennessee / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 143, NWS Nashville, TN

December 6, 2021Houston County, Montgomery County, Stewart County, Tennessee

NWS Nashville, TN issued this severe thunderstorm warning at Dec 6, 2021, 3:54 AM CST for Houston County, Montgomery County, Stewart County, Tennessee. It was in force for 51 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 6, 2021, 3:54 AM CST (09:54 UTC)
Expired: Dec 6, 2021, 4:45 AM CST
In force: 51 min
Issued by: NWS Nashville, TN
Area: Storm-based polygon
Tornado: Possible
Hail: 0.75 in
Wind: 60.0 mph

Counties Houston County, TN, Montgomery County, TN, Stewart County, TN

The radar

The Ft Campbell radar (KHPX), 61 km from the middle of the area, began a volume at 09:56 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, 4:14 AM CST	TSTM WND DMG	9 N Dover, TN	TREES AND POWER LINES DOWN ACROSS BUMPUS MILLS.
Dec 6, 4:17 AM CST	TSTM WND DMG	9 Nne Dover, TN	TREES AND POWER LINES DOWN IN BIG ROCK.
Dec 6, 4:18 AM CST	TSTM WND DMG	3 Ene Dover, TN	CONCENTRATED AREA OF DOWNED TREES NEAR CROSS CREEKS WILDLIFE REFUGE HEADQUARTERS.
Dec 6, 4:18 AM CST	TSTM WND DMG	Dover, TN	TREES AND POWERLINES DOWN, ALONG WITH MINOR PROPERTY DAMAGE THROUGHOUT THE CITY OF DOVER. TIME ESTIMATED VIA RADAR.
Dec 6, 4:33 AM CST	TSTM WND GST 53	5 Nw Clarksville, TN	ASOS STATION KCKV CLARKSVILLE OUTLAW FIELD.
Dec 6, 4:36 AM CST	TSTM WND DMG	3 Ssw Tennessee Ridge, TN	REPORTS OF TREES AND LIMBS DOWN IN LEWIS BRANCH AND BAITMAN BRANCH AREAS OF HOUSTON COUNTY. TIME ESTIMATED VIA RADAR.
Dec 6, 4:38 AM CST	TSTM WND DMG	Clarksville, TN	REPORT OF TREES AND LIMBS DOWN THROUGH OUT THE COUNTY WITH THE FRONT. TIME ESTIMATED VIA RADAR.

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.

Issued	Product	Office	Lasted
Dec 5, 8:54 PM CST	Severe Thunderstorm Watch	SPC	7 hr

The nearest sounding before it

Nashville Metro, TN (KBNA), launched 00:00Z, 9.9 hours before the alert went out and 120 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: 666 J/kg
Mixed-layer CIN: -18 J/kg
Mixed-layer LCL: 658 m above ground
0-6 km bulk shear: 38 kt
0-1 km storm-relative helicity: 346 m²/s²
0-3 km storm-relative helicity: 484 m²/s²
Significant tornado parameter: 1.1
Supercell composite: 5.4

Open this sounding in Storm Lab

The text

As transmitted.

769 
WUUS54 KOHX 060954
SVROHX
TNC083-125-161-061045-
/O.NEW.KOHX.SV.W.0143.211206T0954Z-211206T1045Z/

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

The National Weather Service in Nashville has issued a

* Severe Thunderstorm Warning for...
  Western Montgomery County in Middle Tennessee...
  Stewart County in Middle Tennessee...
  Houston County in Middle Tennessee...

* Until 445 AM CST.

* At 353 AM CST, severe thunderstorms were located along a line 
  extending from Cadiz, Kentucky to near Paris, moving east at 55 
  mph.

  HAZARD...60 mph wind gusts.

  SOURCE...Radar indicated.

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

* Locations impacted include...
  Dover, Erin, Clarksville, Tennessee Ridge, Big Rock, Cumberland
  City, Land Between The Lakes, Houston County Airport, Indian Mound,
  Palmyra and Woodlawn.

This includes Interstate 24 between mile markers 1 and 6.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3666 8785 3663 8785 3664 8720 3620 8766
      3623 8772 3625 8780 3623 8784 3624 8794
      3631 8796 3645 8806 3647 8805 3649 8806
      3652 8804 3656 8803 3668 8807
TIME...MOT...LOC 0953Z 285DEG 47KT 3672 8804 3633 8843 

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

$$

Shamburger

2 follow-up statements

615 
WWUS54 KOHX 061010
SVSOHX

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

TNC083-125-161-061045-
/O.CON.KOHX.SV.W.0143.000000T0000Z-211206T1045Z/
Montgomery TN-Stewart TN-Houston TN-
410 AM CST Mon Dec 6 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 445 AM CST
FOR WESTERN MONTGOMERY...STEWART AND HOUSTON COUNTIES...

At 409 AM CST, severe thunderstorms were located along a line 
extending from Hopkinsville, Kentucky to Springville, moving east at 
55 mph.

HAZARD...60 mph wind gusts.

SOURCE...Radar indicated.

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

Locations impacted include...
Dover, Erin, Clarksville, Tennessee Ridge, Big Rock, Cumberland City,
Land Between The Lakes, Houston County Airport, Indian Mound, Palmyra
and Woodlawn.

This includes Interstate 24 between mile markers 1 and 6.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3666 8785 3663 8785 3664 8720 3620 8766
      3623 8772 3625 8780 3623 8784 3624 8794
      3631 8796 3645 8806 3647 8805 3649 8806
      3652 8804 3656 8803 3658 8804 3667 8795
TIME...MOT...LOC 1009Z 282DEG 48KT 3673 8774 3634 8813 

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

$$

Shamburger

353 
WWUS54 KOHX 061027
SVSOHX

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

TNC083-125-161-061045-
/O.CON.KOHX.SV.W.0143.000000T0000Z-211206T1045Z/
Montgomery TN-Stewart TN-Houston TN-
427 AM CST Mon Dec 6 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 445 AM CST
FOR WESTERN MONTGOMERY...SOUTHEASTERN STEWART AND HOUSTON COUNTIES...

At 427 AM CST, severe thunderstorms were located along a line
extending from near Pembroke to near Tennessee Ridge, moving east at
55 mph.

HAZARD...70 mph wind gusts.

SOURCE...Radar indicated.

IMPACT...Expect considerable tree damage. Damage is likely to mobile 
         homes, roofs, and outbuildings.

Locations impacted include...
Erin, Clarksville, Tennessee Ridge, Cumberland City, Houston County
Airport, Indian Mound, Palmyra and Woodlawn.

This includes Interstate 24 between mile markers 1 and 6.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3664 8720 3620 8766 3623 8772 3625 8780
      3623 8784 3624 8794 3631 8796 3663 8764
TIME...MOT...LOC 1027Z 280DEG 50KT 3674 8733 3625 8780 

TORNADO...POSSIBLE
THUNDERSTORM DAMAGE THREAT...CONSIDERABLE
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...70 MPH

$$

Shamburger

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, 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, 7:21 AM CST	Severe Thunderstorm Warning	OHX	Bedford, Coffee, Giles, Marshall	39 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.