Alert archive / Tennessee / Tornado Warnings in 2021

Tornado Warning 25, NWS Nashville, TN

May 4, 20214 counties in Tennessee

NWS Nashville, TN issued this tornado warning at May 4, 2021, 6:42 AM CDT for 4 counties in Tennessee. It was in force for 33 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: May 4, 2021, 6:42 AM CDT (11:42 UTC)
Expired: May 4, 2021, 7:15 AM CDT
In force: 33 min
Issued by: NWS Nashville, TN
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 0.75 in

Counties Macon County, TN, Smith County, TN, Sumner County, TN, Trousdale County, TN

The radar

The Nashville radar (KOHX), 38 km from the middle of the area, began a volume at 11:45 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 4, 6:45 AM CDT	TSTM WND DMG	Hartsville, TN	THE WEST TROUSDALE TORNADO DISSIPATED INTO A LARGE DOWNBURST THAT CAUSED WIDESPREAD STRAIGHT-LINE WIND DAMAGE ALONG HIGHWAY 25 AS WELL AS IN AND AROUND THE CITY OF HARTSVILLE.
May 4, 6:54 AM CDT	TORNADO	2 E Hartsville, TN	AN EF-0 TORNADO TOUCHED DOWN JUST WEST OF THE CATO COMMUNITY AND MOVED SOUTHEAST, DAMAGING A BUSINESS AT HIGHWAY 10 AND FORT BLOUNT ROAD. THE TORNADO CONTINUED THROUGH RURAL AREAS BLOWING DOWN TREES ALONG GLASGOW BRANCH ROAD AND LICK CREEK ROAD BEFORE LIFTING.
May 4, 6:55 AM CDT	TSTM WND DMG	Hartsville, TN	MULTIPLE TREES AND POWERLINES DOWN...SOME RESIDENTIAL DAMAGE ON 231N...DAMAGE TO BARN ON DAVENPORT LANE...MULTIPLE ROADS BLOCKED

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The watch it was issued in

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

Issued	Product	Office	Lasted
May 4, 5:13 AM CDT	Severe Thunderstorm Watch	SPC	5 hr

The nearest sounding before it

Nashville Metro, TN (KBNA), launched 00:00Z, 11.7 hours before the alert went out and 47 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: 2263 J/kg
Mixed-layer CIN: -5 J/kg
Mixed-layer LCL: 1050 m above ground
0-6 km bulk shear: 30 kt
0-1 km storm-relative helicity: 119 m²/s²
0-3 km storm-relative helicity: 193 m²/s²
Significant tornado parameter: 1.3
Supercell composite: 7.6

Open this sounding in Storm Lab

The text

As transmitted.

700 
WFUS54 KOHX 041142
TOROHX
TNC111-159-165-169-041215-
/O.NEW.KOHX.TO.W.0025.210504T1142Z-210504T1215Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Nashville TN
642 AM CDT Tue May 4 2021

The National Weather Service in Nashville has issued a

* Tornado Warning for...
  Northern Smith County in Middle Tennessee...
  East central Sumner County in Middle Tennessee...
  Southern Macon County in Middle Tennessee...
  Trousdale County in Middle Tennessee...

* Until 715 AM CDT.
    
* At 641 AM CDT, a severe thunderstorm capable of producing a tornado
  was located near Castalian Springs, moving east at 45 mph.

  HAZARD...Tornado.

  SOURCE...Radar indicated rotation.

  IMPACT...Flying debris will be dangerous to those caught without 
           shelter. Mobile homes will be damaged or destroyed. 
           Damage to roofs, windows, and vehicles will occur.  Tree 
           damage is likely.

* Locations impacted include...
  Hartsville, Pleasant Shade and Dixon Springs. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.

&&

LAT...LON 3627 8585 3630 8614 3633 8617 3632 8619
      3634 8621 3634 8622 3635 8623 3634 8625
      3635 8627 3634 8629 3635 8633 3644 8633
      3647 8582
TIME...MOT...LOC 1141Z 266DEG 41KT 3637 8626 

TORNADO...RADAR INDICATED
HAIL...<.75IN

$$

Shamburger

3 follow-up statements

696 
WWUS54 KOHX 041150
SVSOHX

Severe Weather Statement
National Weather Service Nashville TN
650 AM CDT Tue May 4 2021

TNC165-041159-
/O.CAN.KOHX.TO.W.0025.000000T0000Z-210504T1215Z/
Sumner TN-
650 AM CDT Tue May 4 2021

...THE TORNADO WARNING FOR EAST CENTRAL SUMNER COUNTY IS CANCELLED...
    
The tornadic 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 1100 AM CDT for
Middle Tennessee.

LAT...LON 3627 8585 3630 8614 3633 8617 3632 8619
      3634 8621 3634 8622 3635 8623 3645 8621
      3647 8582
TIME...MOT...LOC 1149Z 278DEG 38KT 3640 8616 

$$

TNC111-159-169-041215-
/O.CON.KOHX.TO.W.0025.000000T0000Z-210504T1215Z/
Smith TN-Macon TN-Trousdale TN-
650 AM CDT Tue May 4 2021

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 715 AM CDT FOR NORTHERN
SMITH...SOUTHERN MACON AND TROUSDALE COUNTIES...
    
At 649 AM CDT, a severe thunderstorm capable of producing a tornado
was located over Hartsville, moving east at 45 mph.

HAZARD...Tornado.

SOURCE...Radar indicated rotation.

IMPACT...Flying debris will be dangerous to those caught without 
         shelter. Mobile homes will be damaged or destroyed. Damage 
         to roofs, windows, and vehicles will occur.  Tree damage is 
         likely.

Locations impacted include...
Hartsville, Pleasant Shade and Dixon Springs. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.

&&

LAT...LON 3627 8585 3630 8614 3633 8617 3632 8619
      3634 8621 3634 8622 3635 8623 3645 8621
      3647 8582
TIME...MOT...LOC 1149Z 278DEG 38KT 3640 8616 

TORNADO...RADAR INDICATED
HAIL...<.75IN

$$

Shamburger

287 
WWUS54 KOHX 041157
SVSOHX

Severe Weather Statement
National Weather Service Nashville TN
657 AM CDT Tue May 4 2021

TNC111-041207-
/O.CAN.KOHX.TO.W.0025.000000T0000Z-210504T1215Z/
Macon TN-
657 AM CDT Tue May 4 2021

...THE TORNADO WARNING FOR SOUTHERN MACON COUNTY IS CANCELLED...
    
The tornadic 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 1100 AM CDT for
Middle Tennessee.

LAT...LON 3641 8583 3627 8585 3635 8615 3642 8615
      3643 8601
TIME...MOT...LOC 1157Z 278DEG 39KT 3638 8607 

$$

TNC159-169-041215-
/O.CON.KOHX.TO.W.0025.000000T0000Z-210504T1215Z/
Smith TN-Trousdale TN-
657 AM CDT Tue May 4 2021

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 715 AM CDT FOR NORTHERN
SMITH AND SOUTHEASTERN TROUSDALE COUNTIES...
    
At 657 AM CDT, a severe thunderstorm capable of producing a tornado
was located 3 miles east of Hartsville, moving east at 45 mph.

HAZARD...Tornado.

SOURCE...Radar indicated rotation.

IMPACT...Flying debris will be dangerous to those caught without 
         shelter. Mobile homes will be damaged or destroyed. Damage 
         to roofs, windows, and vehicles will occur.  Tree damage is 
         likely.

Locations impacted include...
Hartsville, Pleasant Shade and Dixon Springs. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.

&&

LAT...LON 3641 8583 3627 8585 3635 8615 3642 8615
      3643 8601
TIME...MOT...LOC 1157Z 278DEG 39KT 3638 8607 

TORNADO...RADAR INDICATED
HAIL...<.75IN

$$

Shamburger

448 
WWUS54 KOHX 041208
SVSOHX

Severe Weather Statement
National Weather Service Nashville TN
708 AM CDT Tue May 4 2021

TNC169-041218-
/O.CAN.KOHX.TO.W.0025.000000T0000Z-210504T1215Z/
Trousdale TN-
708 AM CDT Tue May 4 2021

...THE TORNADO WARNING FOR SOUTHEASTERN TROUSDALE COUNTY IS
CANCELLED...
    
The tornadic 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 1100 AM CDT for
Middle Tennessee.

LAT...LON 3641 8583 3627 8585 3638 8605 3638 8603
      3639 8601 3639 8598 3642 8597 3642 8594
TIME...MOT...LOC 1208Z 270DEG 32KT 3639 8596 

$$

TNC159-041215-
/O.CON.KOHX.TO.W.0025.000000T0000Z-210504T1215Z/
Smith TN-
708 AM CDT Tue May 4 2021

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 715 AM CDT FOR
NORTHEASTERN SMITH COUNTY...
    
At 708 AM CDT, a severe thunderstorm capable of producing a tornado 
was located 9 miles north of Carthage, or near Pleasant Shade, 
moving east at 35 mph.

HAZARD...Tornado.

SOURCE...Radar indicated rotation.

IMPACT...Flying debris will be dangerous to those caught without 
         shelter. Mobile homes will be damaged or destroyed. Damage 
         to roofs, windows, and vehicles will occur.  Tree damage is 
         likely.

Locations impacted include...
Pleasant Shade.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.

&&

LAT...LON 3641 8583 3627 8585 3638 8605 3638 8603
      3639 8601 3639 8598 3642 8597 3642 8594
TIME...MOT...LOC 1208Z 270DEG 32KT 3639 8596 

TORNADO...RADAR INDICATED
HAIL...<.75IN

$$

Shamburger

The office that day

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

Issued	Product	Office	Counties	Lasted
May 3, 9:22 PM CDT	River Flood Advisory	OHX	Hickman	11 hr
May 3, 11:50 PM CDT	Special Weather Statement	OHX	Sumner	40 min
May 3, 11:56 PM CDT	Special Weather Statement	OHX	Jackson, Macon, Trousdale	34 min
May 4, 12:25 AM CDT	Severe Thunderstorm Warning	OHX	Clay, Jackson, Macon, Trousdale	35 min
May 4, 12:58 AM CDT	Severe Thunderstorm Warning	OHX	Clay, Jackson, Macon	47 min
May 4, 1:32 AM CDT	Special Weather Statement	OHX	Cumberland	43 min
May 4, 1:34 AM CDT	Severe Thunderstorm Warning	OHX	Clay, Overton	26 min
May 4, 1:54 AM CDT	Special Weather Statement	OHX	Macon	51 min
May 4, 2:00 AM CDT	Special Weather Statement	OHX	Pickett	45 min
May 4, 2:07 AM CDT	Severe Thunderstorm Warning	OHX	Cumberland	23 min
May 4, 3:01 AM CDT	Special Weather Statement	OHX	Clay	29 min
May 4, 3:07 AM CDT	Severe Thunderstorm Warning	OHX	Clay, Overton, Pickett	38 min
May 4, 4:12 AM CDT	Severe Thunderstorm Warning	OHX	Houston, Humphreys, Stewart	48 min
May 4, 4:50 AM CDT	Severe Thunderstorm Warning	OHX	Cheatham, Dickson, Houston, Montgomery, Robertson, Stewart	55 min
May 4, 5:02 AM CDT	Severe Thunderstorm Warning	OHX	Cheatham, Dickson, Hickman, Houston, Humphreys, Perry	58 min
May 4, 5:39 AM CDT	Severe Thunderstorm Warning	OHX	Cheatham, Davidson, Dickson, Robertson, Sumner	51 min
May 4, 5:43 AM CDT	Special Weather Statement	OHX	Lewis, Perry	47 min
May 4, 5:56 AM CDT	Tornado Warning	OHX	Davidson, Robertson, Sumner	34 min
May 4, 6:00 AM CDT	Special Weather Statement	OHX	Hickman	30 min
May 4, 6:10 AM CDT	Tornado Warning	OHX	Robertson, Sumner	22 min
May 4, 6:16 AM CDT	Severe Thunderstorm Warning	OHX	Davidson, Macon, Smith, Sumner, Trousdale, Wilson	44 min
May 4, 6:21 AM CDT	Tornado Warning	OHX	Sumner, Trousdale, Wilson	24 min
May 4, 6:23 AM CDT	Special Weather Statement	OHX	Maury, Williamson	37 min
May 4, 6:28 AM CDT	Special Weather Statement	OHX	Giles, Lawrence	47 min
May 4, 6:52 AM CDT	Severe Thunderstorm Warning	OHX	Clay, DeKalb, Jackson, Macon, Putnam, Smith and 2 more	38 min
May 4, 6:59 AM CDT	Special Weather Statement	OHX	Cannon, Rutherford	31 min
May 4, 7:01 AM CDT	Special Weather Statement	OHX	Bedford, Giles, Marshall	29 min
May 4, 7:11 AM CDT	Tornado Warning	OHX	Jackson, Smith	34 min
May 4, 7:27 AM CDT	Tornado Warning	OHX	DeKalb, Putnam, Smith	33 min
May 4, 7:29 AM CDT	Severe Thunderstorm Warning	OHX	Clay, DeKalb, Fentress, Jackson, Overton, Pickett and 2 more	46 min
May 4, 7:35 AM CDT	Severe Thunderstorm Warning	OHX	Bedford, Cannon, Coffee, DeKalb, Rutherford, Warren	40 min
May 4, 7:48 AM CDT	Tornado Warning	OHX	DeKalb, Putnam, White	27 min
May 4, 7:53 AM CDT	Severe Thunderstorm Warning	OHX	Coffee, Cumberland, DeKalb, Grundy, Van Buren, Warren and 1 more	37 min
May 4, 8:05 AM CDT	Severe Thunderstorm Warning	OHX	Cumberland, Fentress, Overton, Pickett, Putnam, White	40 min
May 4, 8:07 AM CDT	Tornado Warning	OHX	Cumberland, White	23 min
May 4, 8:24 AM CDT	Tornado Warning	OHX	Cumberland, White	11 min
May 4, 8:29 AM CDT	Areal Flood Advisory	OHX	Clay, Fentress, Jackson, Overton, Pickett	2 hr
May 4, 9:32 AM CDT	River Flood Warning	OHX	Perry	21 hr

Nearby

Tornado Warnings in Tennessee, 2021 Every tornado warning in 2021 Tornadoes 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.