Alert archive / Tennessee / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 103, NWS Nashville, TN

June 21, 20215 counties in Tennessee

NWS Nashville, TN issued this severe thunderstorm warning at Jun 21, 2021, 2:38 PM CDT for 5 counties in Tennessee. It was in force for 37 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Jun 21, 2021, 2:38 PM CDT (19:38 UTC)
Expired: Jun 21, 2021, 3:15 PM CDT
In force: 37 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, Overton County, TN, Putnam County, TN, Smith County, TN

The radar

The Nashville radar (KOHX), 80 km from the middle of the area, began a volume at 19:39 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.

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Jun 21, 12:52 PM CDT	Severe Thunderstorm Watch	SPC	5 hr

The nearest sounding before it

Nashville Metro, TN (KBNA), launched 12:00Z, 7.6 hours before the alert went out and 85 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.

957 
WUUS54 KOHX 211938
SVROHX
TNC027-087-133-141-159-212015-
/O.NEW.KOHX.SV.W.0103.210621T1938Z-210621T2015Z/

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

The National Weather Service in Nashville has issued a

* Severe Thunderstorm Warning for...
  Northwestern Overton County in Middle Tennessee...
  East central Smith County in Middle Tennessee...
  Jackson County in Middle Tennessee...
  Central Clay County in Middle Tennessee...
  Northwestern Putnam County in Middle Tennessee...

* Until 315 PM CDT.

* At 237 PM CDT, a severe thunderstorm was located 7 miles east of
  Carthage, moving northeast at 45 mph.

  HAZARD...60 mph wind gusts.

  SOURCE...Radar indicated.

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

* Locations impacted include...
  Livingston, Carthage, Celina, Gainesboro, Whitleyville, Granville,
  Cummins Falls State Park and Standing Stone State Park.

This includes Interstate 40 near mile marker 266.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3613 8583 3628 8595 3657 8547 3633 8530
TIME...MOT...LOC 1937Z 236DEG 37KT 3625 8582 

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

10

1 follow-up statement

162 
WWUS54 KOHX 211952
SVSOHX

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

TNC159-212002-
/O.CAN.KOHX.SV.W.0103.000000T0000Z-210621T2015Z/
Smith TN-
252 PM CDT Mon Jun 21 2021

...THE SEVERE THUNDERSTORM WARNING FOR EAST CENTRAL SMITH 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 3619 8567 3635 8583 3657 8547 3633 8530
TIME...MOT...LOC 1952Z 236DEG 37KT 3634 8566 

$$

TNC027-087-133-141-212015-
/O.CON.KOHX.SV.W.0103.000000T0000Z-210621T2015Z/
Overton TN-Jackson TN-Clay TN-Putnam TN-
252 PM CDT Mon Jun 21 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 315 PM CDT
FOR NORTHWESTERN OVERTON...JACKSON...CENTRAL CLAY AND NORTHWESTERN
PUTNAM COUNTIES...

At 252 PM CDT, a severe thunderstorm was located over Gainesboro,
moving northeast at 45 mph.

HAZARD...60 mph wind gusts.

SOURCE...Radar indicated.

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

Locations impacted include...
Livingston, Celina, Gainesboro, Whitleyville, Cummins Falls State
Park and Standing Stone State Park.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3619 8567 3635 8583 3657 8547 3633 8530
TIME...MOT...LOC 1952Z 236DEG 37KT 3634 8566 

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, 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, 5:22 PM CDT	Severe Thunderstorm Warning	OHX	Cumberland, Van Buren, Warren, White	38 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.