Alert archive / Tennessee / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 107, NWS Nashville, TN

June 21, 20214 counties in Tennessee

NWS Nashville, TN issued this severe thunderstorm warning at Jun 21, 2021, 5:22 PM CDT for 4 counties in Tennessee. It was in force for 38 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: Jun 21, 2021, 5:22 PM CDT (22:22 UTC)
Expired: Jun 21, 2021, 6:00 PM CDT
In force: 38 min
Issued by: NWS Nashville, TN
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

Counties Cumberland County, TN, Van Buren County, TN, Warren County, TN, White County, TN

The radar

The Nashville radar (KOHX), 105 km from the middle of the area, began a volume at 22:22 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
Jun 21, 5:25 PM CDT	TSTM WND DMG	Doyle, TN	LARGE TREE DOWN ON NORTH ROBIN HOOD RD.
Jun 21, 5:34 PM CDT	TSTM WND DMG	10 Ssw Pleasant Hill, TN	LARGE TREE DOWN ON SCOTTS GULF ROAD
Jun 21, 5:36 PM CDT	TSTM WND DMG	7 E Spencer, TN	LARGE TREE DOWN ON SR 285

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, 10.4 hours before the alert went out and 104 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: 1530 J/kg
Mixed-layer CIN: -42 J/kg
Mixed-layer LCL: 919 m above ground
0-6 km bulk shear: 40 kt
0-1 km storm-relative helicity: 211 m²/s²
0-3 km storm-relative helicity: 228 m²/s²
Significant tornado parameter: 1.3
Supercell composite: 9.6

Open this sounding in Storm Lab

The text

As transmitted.

650 
WUUS54 KOHX 212222
SVROHX
TNC035-175-177-185-212300-
/O.NEW.KOHX.SV.W.0107.210621T2222Z-210621T2300Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Nashville TN
522 PM CDT Mon Jun 21 2021

The National Weather Service in Nashville has issued a

* Severe Thunderstorm Warning for...
  Southwestern Cumberland County in Middle Tennessee...
  Van Buren County in Middle Tennessee...
  Northeastern Warren County in Middle Tennessee...
  White County in Middle Tennessee...

* Until 600 PM CDT.

* At 522 PM CDT, a severe thunderstorm was located 9 miles northwest
  of Spencer, moving east at 40 mph.

  HAZARD...60 mph wind gusts.

  SOURCE...Radar indicated.

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

* Locations impacted include...
  McMinnville, Sparta, Spencer, Pleasant Hill, Doyle, Fall Creek
  Falls State Park, Indian Rock Lake, Virgin Falls State Natural Area
  and Rock Island State Park.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3576 8526 3572 8527 3564 8535 3566 8586
      3584 8572 3582 8566 3585 8563 3585 8567
      3588 8564 3589 8567 3590 8565 3592 8566
      3595 8564 3599 8514 3577 8513
TIME...MOT...LOC 2222Z 268DEG 35KT 3581 8560 

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

10

1 follow-up statement

873 
WWUS54 KOHX 212245
SVSOHX

Severe Weather Statement
National Weather Service Nashville TN
545 PM CDT Mon Jun 21 2021

TNC177-212254-
/O.CAN.KOHX.SV.W.0107.000000T0000Z-210621T2300Z/
Warren TN-
545 PM CDT Mon Jun 21 2021

...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN WARREN COUNTY IS
CANCELLED...
    
The severe thunderstorm which prompted the warning has moved out of 
the warned area. Therefore, the warning has been cancelled.

A Severe Thunderstorm Watch remains in effect until 800 PM CDT for
Middle Tennessee.

LAT...LON 3576 8526 3572 8527 3564 8535 3565 8560
      3571 8560 3573 8559 3575 8559 3576 8560
      3583 8559 3589 8550 3598 8533 3599 8514
      3577 8513
TIME...MOT...LOC 2244Z 268DEG 35KT 3582 8533 

$$

TNC035-175-185-212300-
/O.CON.KOHX.SV.W.0107.000000T0000Z-210621T2300Z/
Cumberland TN-Van Buren TN-White TN-
545 PM CDT Mon Jun 21 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 600 PM CDT
FOR SOUTHWESTERN CUMBERLAND...VAN BUREN AND SOUTHEASTERN WHITE
COUNTIES...

At 544 PM CDT, a severe thunderstorm was located 9 miles northeast of
Spencer, moving east at 40 mph.

HAZARD...60 mph wind gusts.

SOURCE...Radar indicated.

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

Locations impacted include...
Spencer, Pleasant Hill, Doyle, Virgin Falls State Natural Area, Fall
Creek Falls State Park and Indian Rock Lake.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3576 8526 3572 8527 3564 8535 3565 8560
      3571 8560 3573 8559 3575 8559 3576 8560
      3583 8559 3589 8550 3598 8533 3599 8514
      3577 8513
TIME...MOT...LOC 2244Z 268DEG 35KT 3582 8533 

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
Jun 21, 12:18 PM CDT	Special Weather Statement	OHX	Macon	27 min
Jun 21, 12:53 PM CDT	Special Weather Statement	OHX	Stewart	52 min
Jun 21, 1:32 PM CDT	Special Weather Statement	OHX	Robertson	43 min
Jun 21, 1:41 PM CDT	Special Weather Statement	OHX	Dickson, Houston, Montgomery, Stewart	49 min
Jun 21, 1:52 PM CDT	Special Weather Statement	OHX	Clay	23 min
Jun 21, 1:59 PM CDT	Special Weather Statement	OHX	Smith, Wilson	46 min
Jun 21, 2:04 PM CDT	Severe Thunderstorm Warning	OHX	DeKalb, Smith, Wilson	41 min
Jun 21, 2:05 PM CDT	Severe Thunderstorm Warning	OHX	Cheatham, Dickson, Houston, Humphreys, Montgomery	40 min
Jun 21, 2:36 PM CDT	Severe Thunderstorm Warning	OHX	Cheatham, Davidson, Dickson	39 min
Jun 21, 2:38 PM CDT	Severe Thunderstorm Warning	OHX	Clay, Jackson, Overton, Putnam, Smith	37 min
Jun 21, 3:10 PM CDT	Special Weather Statement	OHX	Davidson, Trousdale, Wilson	50 min
Jun 21, 3:13 PM CDT	Severe Thunderstorm Warning	OHX	Clay, Fentress, Jackson, Overton, Pickett	47 min
Jun 21, 3:40 PM CDT	Severe Thunderstorm Warning	OHX	Fentress, Overton	35 min
Jun 21, 3:50 PM CDT	Special Weather Statement	OHX	Cumberland	40 min
Jun 21, 4:39 PM CDT	Special Weather Statement	OHX	Cannon, Warren	51 min
Jun 21, 4:44 PM CDT	Severe Thunderstorm Warning	OHX	Cannon, DeKalb, Van Buren, Warren, White	46 min
Jun 21, 5:57 PM CDT	Severe Thunderstorm Warning	OHX	Cumberland	33 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.