Alert archive / Tennessee / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 146, NWS Nashville, TN

December 6, 20216 counties in Tennessee

NWS Nashville, TN issued this severe thunderstorm warning at Dec 6, 2021, 6:02 AM CST for 6 counties in Tennessee. It was in force for 43 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, 6:02 AM CST (12:02 UTC)
Expired: Dec 6, 2021, 6:45 AM CST
In force: 43 min
Issued by: NWS Nashville, TN
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

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

The radar

The Nashville radar (KOHX), 57 km from the middle of the area, began a volume at 12:00 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, 6:04 AM CST	TSTM WND DMG	Hartsville, TN	TREE 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, 0.0 hours before the alert went out and 65 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.

331 
WUUS54 KOHX 061202
SVROHX
TNC027-087-111-159-169-189-061245-
/O.NEW.KOHX.SV.W.0146.211206T1202Z-211206T1245Z/

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

The National Weather Service in Nashville has issued a

* Severe Thunderstorm Warning for...
  Smith County in Middle Tennessee...
  Western Jackson County in Middle Tennessee...
  Northern Wilson County in Middle Tennessee...
  Northwestern Clay County in Middle Tennessee...
  Macon County in Middle Tennessee...
  Trousdale County in Middle Tennessee...

* Until 645 AM CST.

* At 601 AM CST, severe thunderstorms were located along a line 
  extending from Lafayette to near Mount Juliet, moving east at 45 
  mph.

  HAZARD...60 mph wind gusts.

  SOURCE...Radar indicated.

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

* Locations impacted include...
  Lebanon, Lafayette, Carthage, Hartsville, Gordonsville, Red Boiling
  Springs, Hickman, South Carthage, Tuckers Crossroads, Whitleyville,
  Moss, Bugtussle, Dixon Springs, Pleasant Shade, Dickerson Chapel
  Recreation Area, Granville and Boles.

This includes the following highways...
 Interstate 40 between mile markers 231 and 264.
 Interstate 840 between mile markers 73 and 76.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3661 8551 3613 8587 3614 8648 3631 8630
      3664 8611
TIME...MOT...LOC 1201Z 271DEG 40KT 3662 8596 3615 8641 

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

$$

Shamburger

1 follow-up statement

105 
WWUS54 KOHX 061220
SVSOHX

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

TNC169-061230-
/O.CAN.KOHX.SV.W.0146.000000T0000Z-211206T1245Z/
Trousdale TN-
620 AM CST Mon Dec 6 2021

...THE SEVERE THUNDERSTORM WARNING FOR TROUSDALE COUNTY IS
CANCELLED...

The storms which prompted the warning have moved out of the warned 
area. Therefore, the warning has been cancelled.

LAT...LON 3661 8551 3613 8587 3614 8627 3636 8608
      3640 8598 3642 8597 3643 8602 3662 8585
TIME...MOT...LOC 1220Z 269DEG 39KT 3662 8571 3615 8617 

$$

TNC027-087-111-159-189-061245-
/O.CON.KOHX.SV.W.0146.000000T0000Z-211206T1245Z/
Smith TN-Jackson TN-Wilson TN-Clay TN-Macon TN-
620 AM CST Mon Dec 6 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 645 AM CST
FOR SMITH...WESTERN JACKSON...NORTHEASTERN WILSON...NORTHWESTERN CLAY
AND EASTERN MACON COUNTIES...

At 620 AM CST, severe thunderstorms were located along a line
extending from near Tompkinsville to near Watertown, moving east at
45 mph.

HAZARD...60 mph wind gusts.

SOURCE...Radar indicated.

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

Locations impacted include...
Carthage, Gordonsville, Red Boiling Springs, Hickman, South Carthage,
Tuckers Crossroads, Whitleyville, Moss, Dixon Springs, Pleasant Shade
and Granville.

This includes Interstate 40 between mile markers 243 and 264.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3661 8551 3613 8587 3614 8627 3636 8608
      3640 8598 3642 8597 3643 8602 3662 8585
TIME...MOT...LOC 1220Z 269DEG 39KT 3662 8571 3615 8617 

TORNADO...POSSIBLE
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 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, 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, 6:03 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.