Alert archive / Tennessee / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 145, NWS Nashville, TN

December 6, 20216 counties in Tennessee

NWS Nashville, TN issued this severe thunderstorm warning at Dec 6, 2021, 5:09 AM CST for 6 counties in Tennessee. It was in force for 36 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, 5:09 AM CST (11:09 UTC)
Expired: Dec 6, 2021, 5:45 AM CST
In force: 36 min
Issued by: NWS Nashville, TN
Area: Storm-based polygon
Tornado: Possible
Hail: 0.75 in
Wind: 60.0 mph

Counties Cheatham County, TN, Davidson County, TN, Dickson County, TN, Robertson County, TN, Sumner County, TN, Wilson County, TN

The radar

The Nashville radar (KOHX), 25 km from the middle of the area, began a volume at 11:11 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, 5:10 AM CST	TSTM WND DMG	Springfield, TN	TWO STRUCTURE FIRES FROM LIGHTNING STRIKES IN MARTIN CHAPEL AREA. TIME ESTIMATED VIA RADAR.
Dec 6, 5:18 AM CST	TSTM WND DMG	Ashland City, TN	REPORT OF TREES DOWN BLOCKING ROAD ON SADDLE TREE ROAD AND ED HARRIS ROAD. TIME ESTIMATED VIA RADAR.
Dec 6, 5:24 AM CST	TSTM WND DMG	5 Ese Cross Plains, TN	REPORT OF TREES DOWN IN COTTONTOWN. TIME ESTIMATED VIA RADAR.

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 00:00Z, 11.2 hours before the alert went out and 37 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.

139 
WUUS54 KOHX 061109
SVROHX
TNC021-037-043-147-165-189-061145-
/O.NEW.KOHX.SV.W.0145.211206T1109Z-211206T1145Z/

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

The National Weather Service in Nashville has issued a

* Severe Thunderstorm Warning for...
  Davidson County in Middle Tennessee...
  Northeastern Dickson County in Middle Tennessee...
  Sumner County in Middle Tennessee...
  Northwestern Wilson County in Middle Tennessee...
  Cheatham County in Middle Tennessee...
  Robertson County in Middle Tennessee...

* Until 545 AM CST.

* At 508 AM CST, severe thunderstorms were located along a line 
  extending from Cross Plains to Joelton to White Bluff, moving east 
  at 55 mph.

  HAZARD...60 mph wind gusts.

  SOURCE...Radar indicated.

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

* Locations impacted include...
  Gallatin, Lebanon, Springfield, Ashland City, Nashville, Madison,
  Hendersonville, Mount Juliet, Goodlettsville, White House,
  Millersville, Greenbrier, Forest Hills, Oak Hill, Coopertown, Belle
  Meade, Lakewood, Westmoreland, Pegram and Ridgetop.

This includes the following highways...
 Interstate 40 between mile markers 197 and 234.
 Interstate 65 between mile markers 77 and 120.
 Interstate 24 between mile markers 24 and 59.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3664 8621 3619 8635 3603 8668 3618 8741
      3636 8709 3665 8685 3665 8659 3663 8657
      3665 8651
TIME...MOT...LOC 1108Z 282DEG 47KT 3662 8676 3631 8694 3620 8725 

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

$$

Shamburger

1 follow-up statement

414 
WWUS54 KOHX 061131
SVSOHX

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

TNC021-043-147-061140-
/O.CAN.KOHX.SV.W.0145.000000T0000Z-211206T1145Z/
Dickson TN-Cheatham TN-Robertson TN-
531 AM CST Mon Dec 6 2021

...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN DICKSON...
CHEATHAM AND ROBERTSON COUNTIES IS CANCELLED...

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

LAT...LON 3664 8621 3619 8635 3603 8668 3608 8693
      3665 8651
TIME...MOT...LOC 1130Z 280DEG 39KT 3662 8642 3627 8665 3614 8695 

$$

TNC037-165-189-061145-
/O.CON.KOHX.SV.W.0145.000000T0000Z-211206T1145Z/
Davidson TN-Sumner TN-Wilson TN-
531 AM CST Mon Dec 6 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 545 AM CST
FOR CENTRAL DAVIDSON...SUMNER AND NORTHWESTERN WILSON COUNTIES...

At 530 AM CST, severe thunderstorms were located along a line 
extending from Portland to Old Hickory to near Bellevue, moving east 
at 45 mph.

HAZARD...60 mph wind gusts.

SOURCE...Radar indicated.

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

Locations impacted include...
Gallatin, Lebanon, Nashville, Madison, Hendersonville, Mount Juliet,
Goodlettsville, White House, Millersville, Forest Hills, Oak Hill,
Belle Meade, Lakewood, Westmoreland, Portland, Hermitage, Rural Hill,
Antioch, Belinda City and Old Hickory.

This includes the following highways...
 Interstate 40 between mile markers 203 and 234.
 Interstate 65 between mile markers 77 and 100.
 Interstate 24 between mile markers 42 and 59.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3664 8621 3619 8635 3603 8668 3608 8693
      3665 8651
TIME...MOT...LOC 1130Z 280DEG 39KT 3662 8642 3627 8665 3614 8695 

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, 5:16 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.