Alert archive / Tennessee / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 79, NWS Nashville, TN

May 6, 20217 counties in Tennessee

NWS Nashville, TN issued this severe thunderstorm warning at May 6, 2021, 5:42 PM CDT for 7 counties in Tennessee. It was in force for 33 min. 5 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: May 6, 2021, 5:42 PM CDT (22:42 UTC)
Expired: May 6, 2021, 6:15 PM CDT
In force: 33 min
Issued by: NWS Nashville, TN
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

Counties Davidson County, TN, Rutherford County, TN, Smith County, TN, Sumner County, TN, Trousdale County, TN, Williamson County, TN, Wilson County, TN

The radar

The Nashville radar (KOHX), 37 km from the middle of the area, began a volume at 22:41 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
May 6, 5:42 PM CDT	TSTM WND DMG	Franklin, TN	REPORT OF A TREE DOWN NEAR COOL SPRINGS.
May 6, 5:44 PM CDT	TSTM WND DMG	Brentwood, TN	REPORT OF TREE DOWN ON GRANNY WHITE NEAR BRENTWOOD ACADEMY. #TSPOTTER
May 6, 5:48 PM CDT	TSTM WND DMG	1 Sw Donelson, TN	LARGE LIMBS DOWN NEAR ELM HILL AND MCCOVOCK PIKE. #TSPOTTER
May 6, 6:12 PM CDT	TSTM WND DMG	Smyrna, TN	REPORTS TREES DOWN AND SPLIT ON SAM DAVIS ROAD. #TSPOTTER
May 6, 6:18 PM CDT	TSTM WND DMG	6 N Murfreesboro, TN	REPORT OF TREE DOWN ON POWER LINES COTTON COURT.

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, 10.7 hours before the alert went out and 23 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 1719 m above ground
0-6 km bulk shear: 65 kt
0-1 km storm-relative helicity: -90 m²/s²
0-3 km storm-relative helicity: -71 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

014 
WUUS54 KOHX 062242
SVROHX
TNC037-149-159-165-169-187-189-062315-
/O.NEW.KOHX.SV.W.0079.210506T2242Z-210506T2315Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Nashville TN
542 PM CDT Thu May 6 2021

The National Weather Service in Nashville has issued a

* Severe Thunderstorm Warning for...
  Northwestern Smith County in Middle Tennessee...
  Southeastern Davidson County in Middle Tennessee...
  Rutherford County in Middle Tennessee...
  Southeastern Sumner County in Middle Tennessee...
  Eastern Williamson County in Middle Tennessee...
  Wilson County in Middle Tennessee...
  Southern Trousdale County in Middle Tennessee...

* Until 615 PM CDT.

* At 542 PM CDT, severe thunderstorms were located along a line
  extending from near Gallatin to near Columbia, moving east at 40
  mph.

  HAZARD...60 mph wind gusts.

  SOURCE...Radar indicated.

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

* Locations impacted include...
  Murfreesboro, Franklin, Gallatin, Lebanon, Hartsville,
  Hendersonville, Smyrna, Brentwood, La Vergne, Spring Hill, Mount
  Juliet, Nolensville, Oak Hill, Lakewood, Thompson's Station,
  Watertown, Hermitage, Walterhill, Rural Hill and Antioch.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3639 8598 3568 8635 3576 8693 3578 8693
      3578 8694 3577 8695 3578 8695 3578 8696
      3577 8697 3578 8700 3615 8671 3642 8658
TIME...MOT...LOC 2242Z 275DEG 34KT 3641 8646 3567 8702 

HAIL...<.75IN
WIND...60MPH
 
$$

10

1 follow-up statement

224 
WWUS54 KOHX 062306
SVSOHX

Severe Weather Statement
National Weather Service Nashville TN
606 PM CDT Thu May 6 2021

TNC037-165-187-062316-
/O.CAN.KOHX.SV.W.0079.000000T0000Z-210506T2315Z/
Davidson TN-Sumner TN-Williamson TN-
606 PM CDT Thu May 6 2021

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN DAVIDSON...
SOUTHEASTERN SUMNER AND EASTERN WILLIAMSON COUNTIES IS CANCELLED...

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

LAT...LON 3568 8635 3573 8670 3575 8670 3577 8666
      3579 8666 3579 8661 3581 8662 3582 8661
      3583 8663 3585 8660 3591 8662 3608 8654
      3608 8653 3606 8653 3612 8652 3632 8633
      3631 8630 3637 8627 3639 8598
TIME...MOT...LOC 2306Z 275DEG 34KT 3639 8618 3565 8674 

$$

TNC149-159-169-189-062315-
/O.CON.KOHX.SV.W.0079.000000T0000Z-210506T2315Z/
Smith TN-Rutherford TN-Wilson TN-Trousdale TN-
606 PM CDT Thu May 6 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 615 PM CDT
FOR NORTHWESTERN SMITH...RUTHERFORD...WILSON AND SOUTHERN TROUSDALE
COUNTIES...

At 606 PM CDT, severe thunderstorms were located along a line
extending from Hartsville to 11 miles southeast of Spring Hill,
moving east at 40 mph.

HAZARD...60 mph wind gusts.

SOURCE...Radar indicated.

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

Locations impacted include...
Murfreesboro, Lebanon, Smyrna, La Vergne, Mount Juliet, Watertown,
Walterhill, Rural Hill, Eagleville, Lascassas, Tuckers Crossroads,
Christiana, Dixon Springs, Dickerson Chapel Recreation Area, Cedars
Of Lebanon State Park, Rockvale and Gladeville.

This includes the following highways...
 Interstate 40 between mile markers 229 and 249.
 Interstate 24 between mile markers 66 and 88.
 Interstate 840 between mile markers 46 and 76.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3568 8635 3573 8670 3575 8670 3577 8666
      3579 8666 3579 8661 3581 8662 3582 8661
      3583 8663 3585 8660 3591 8662 3608 8654
      3608 8653 3606 8653 3612 8652 3632 8633
      3631 8630 3637 8627 3639 8598
TIME...MOT...LOC 2306Z 275DEG 34KT 3639 8618 3565 8674 

HAIL...<.75IN
WIND...60MPH
 
$$

10

The office that day

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

Issued	Product	Office	Counties	Lasted
May 6, 3:44 PM CDT	Special Weather Statement	OHX	Stewart	46 min
May 6, 4:04 PM CDT	Severe Thunderstorm Warning	OHX	Montgomery, Stewart	26 min
May 6, 4:18 PM CDT	Special Weather Statement	OHX	Dickson, Houston, Humphreys	42 min
May 6, 4:27 PM CDT	Severe Thunderstorm Warning	OHX	Cheatham, Dickson, Houston, Montgomery, Robertson, Stewart	33 min
May 6, 4:35 PM CDT	Special Weather Statement	OHX	Hickman, Lewis, Perry, Wayne	40 min
May 6, 4:44 PM CDT	Severe Thunderstorm Warning	OHX	Cheatham, Dickson, Hickman, Houston, Humphreys, Montgomery and 3 more	31 min
May 6, 4:56 PM CDT	Severe Thunderstorm Warning	OHX	Cheatham, Robertson, Sumner	34 min
May 6, 5:05 PM CDT	Severe Thunderstorm Warning	OHX	Giles, Hickman, Lawrence, Lewis, Marshall, Maury and 2 more	40 min
May 6, 5:09 PM CDT	Severe Thunderstorm Warning	OHX	Cheatham, Davidson, Dickson, Hickman, Rutherford, Smith and 4 more	36 min
May 6, 5:29 PM CDT	Severe Thunderstorm Warning	OHX	Macon, Sumner, Trousdale	31 min
May 6, 5:45 PM CDT	Severe Thunderstorm Warning	OHX	Bedford, Giles, Lawrence, Marshall, Maury, Rutherford and 1 more	45 min
May 6, 6:00 PM CDT	Special Weather Statement	OHX	Macon, Trousdale	45 min
May 6, 6:13 PM CDT	Severe Thunderstorm Warning	OHX	Cannon, Coffee, DeKalb, Jackson, Putnam, Rutherford and 4 more	47 min
May 6, 6:27 PM CDT	Severe Thunderstorm Warning	OHX	Bedford, Cannon, Coffee, Grundy, Rutherford, Warren	48 min
May 6, 6:58 PM CDT	Special Weather Statement	OHX	Cumberland, DeKalb, Fentress, Jackson, Overton, Putnam and 3 more	47 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.