Alert archive / Tennessee / Tornado Warnings in 2021

Tornado Warning 23, NWS Nashville, TN

May 4, 2021Robertson County, Sumner County, Tennessee

NWS Nashville, TN issued this tornado warning at May 4, 2021, 6:10 AM CDT for Robertson County, Sumner County, Tennessee. It was in force for 22 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 4, 2021, 6:10 AM CDT (11:10 UTC)
Expired: May 4, 2021, 6:32 AM CDT
In force: 22 min
Issued by: NWS Nashville, TN
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 0.75 in

Counties Robertson County, TN, Sumner County, TN

The radar

The Nashville radar (KOHX), 38 km from the middle of the area, began a volume at 11:14 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, 6:10 AM CDT	TORNADO	White House, TN	A SMALL, BRIEF AND WEAK EF-0 TORNADO TOUCHED DOWN IN WHITE HOUSE ALONG HIGHWAY 76 THEN MOVED NORTHEAST ACROSS HIGHWAY 31W AT PORTLAND ROAD BEFORE LIFTING NEAR REIDWAY DRIVE. A FEW TREES WERE KNOCKED DOWN WEST OF HIGHWAY 31W AND THE SHEET METAL ROOF WAS BLOWN O
May 4, 6:14 AM CDT	TSTM WND DMG	4 Wsw Portland, TN	THE ORLINDA TORNADO DISSIPATED INTO A LARGE DOWNBURST THAT BLEW DOWN SEVERAL TREES IN NEIGHBORHOODS ALONG WEST HARPER ROAD AND JERNIGAN ROAD, WITH BOTH ROADWAYS BLOCKED.
May 4, 6:20 AM CDT	TSTM WND DMG	Portland, TN	NUMEROUS UPROOTED TREES ALONG AUSTIN BRIDGE RD AND RIGGS RD
May 4, 6:27 AM CDT	TSTM WND DMG	Sw White House, TN	REPORT OF NUMEROUS TREES DOWN IN ROBERTSON COUNTY.
May 4, 6:27 AM CDT	TSTM WND DMG	Sw White House, TN	REPORT OF NUMEROUS TRESS DOWN IN ROBERTSON COUNTY.

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, 11.2 hours before the alert went out and 51 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.

258 
WFUS54 KOHX 041110
TOROHX
TNC147-165-041145-
/O.NEW.KOHX.TO.W.0023.210504T1110Z-210504T1145Z/

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

The National Weather Service in Nashville has issued a

* Tornado Warning for...
  Northern Sumner County in Middle Tennessee...
  Northeastern Robertson County in Middle Tennessee...

* Until 645 AM CDT.
    
* At 610 AM CDT, a severe thunderstorm capable of producing a 
  tornado was located near Orlinda, or 14 miles northeast of 
  Springfield, moving east at 45 mph. Another possible tornado was 
  located near White House, 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.

* This dangerous storm will be near...
  Portland around 620 AM CDT.
  Westmoreland around 640 AM CDT.

Other locations impacted by this tornadic thunderstorm include Oak
Grove, Cottontown, Orlinda and Bethpage.

This includes Interstate 65 between mile markers 107 and 120.
 
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 3664 8626 3642 8627 3645 8674 3661 8670
      3665 8635
TIME...MOT...LOC 1110Z 261DEG 40KT 3659 8664 

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

$$

Shamburger

3 follow-up statements

690 
WWUS54 KOHX 041117
SVSOHX

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

TNC147-041127-
/O.CAN.KOHX.TO.W.0023.000000T0000Z-210504T1145Z/
Robertson TN-
617 AM CDT Tue May 4 2021

...THE TORNADO WARNING FOR NORTHEASTERN ROBERTSON 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 3664 8626 3642 8627 3645 8664 3660 8658
      3665 8635
TIME...MOT...LOC 1117Z 267DEG 40KT 3657 8654 

$$

TNC165-041145-
/O.CON.KOHX.TO.W.0023.000000T0000Z-210504T1145Z/
Sumner TN-
617 AM CDT Tue May 4 2021

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 645 AM CDT FOR NORTHERN
SUMNER COUNTY...
    
At 617 AM CDT, a severe thunderstorm capable of producing a tornado 
was located near Portland, or 14 miles north of Gallatin, moving 
east at 45 mph. Another possible tornado was located just east of 
White House, 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.

This dangerous storm will be near...
  Westmoreland around 640 AM CDT.

Other locations impacted by this tornadic thunderstorm include Oak
Grove, Bethpage and Cottontown.

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 3664 8626 3642 8627 3645 8664 3660 8658
      3665 8635
TIME...MOT...LOC 1117Z 267DEG 40KT 3657 8654 

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

$$

Shamburger

797 
WWUS54 KOHX 041126
SVSOHX

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

TNC165-041145-
/O.CON.KOHX.TO.W.0023.000000T0000Z-210504T1145Z/
Sumner TN-
626 AM CDT Tue May 4 2021

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 645 AM CDT FOR
NORTHEASTERN SUMNER COUNTY...
    
At 626 AM CDT, a severe thunderstorm capable of producing a tornado
was located near Cottontown, moving east at 40 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...
Westmoreland, Oak Grove and Bethpage. 

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 3660 8626 3642 8627 3644 8652 3656 8652
TIME...MOT...LOC 1126Z 271DEG 36KT 3647 8646 

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

$$

Shamburger

238 
WWUS54 KOHX 041132
SVSOHX

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

TNC165-041142-
/O.CAN.KOHX.TO.W.0023.000000T0000Z-210504T1145Z/
Sumner TN-
632 AM CDT Tue May 4 2021

...THE TORNADO WARNING FOR NORTHEASTERN SUMNER COUNTY IS CANCELLED...
                
The storm which prompted the warning has weakened below severe
limits, and no longer appears capable of producing a tornado.
Therefore, the warning has been cancelled.

A Severe Thunderstorm Watch remains in effect until 1100 AM CDT for
Middle Tennessee.

Remember, a Severe Thunderstorm Warning still remains in effect for
Sumner County.

LAT...LON 3660 8626 3642 8627 3644 8652 3656 8652
TIME...MOT...LOC 1130Z 261DEG 40KT 3648 8637 

$$

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, 6:16 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, 6:42 AM CDT	Tornado Warning	OHX	Macon, Smith, Sumner, Trousdale	33 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.