Alert archive / Tennessee / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 124, NWS Nashville, TN

July 31, 2021Lewis County, Perry County, Wayne County, Tennessee

NWS Nashville, TN issued this severe thunderstorm warning at Jul 31, 2021, 11:24 PM CDT for Lewis County, Perry County, Wayne County, Tennessee. It was in force for 36 min. 1 report 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: Jul 31, 2021, 11:24 PM CDT (04:24 UTC)
Expired: Aug 1, 2021, 12:00 AM CDT
In force: 36 min
Issued by: NWS Nashville, TN
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

Counties Lewis County, TN, Perry County, TN, Wayne County, TN

The radar

The Nashville radar (KOHX), 153 km from the middle of the area, began a volume at 04:27 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
Jul 31, 11:42 PM CDT	TSTM WND DMG	Linden, TN	*CORRECTED FOR TIME* DISPTACH REPORT OF MULTIPLE TREES DOWN IN LINDEN AND LOBELVILLE. TIME ESTIMATED VIA RADAR.

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 00:00Z, 4.4 hours before the alert went out and 144 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: 1106 J/kg
Mixed-layer CIN: -7 J/kg
Mixed-layer LCL: 1447 m above ground
0-6 km bulk shear: 44 kt
0-1 km storm-relative helicity: 91 m²/s²
0-3 km storm-relative helicity: 251 m²/s²
Significant tornado parameter: 0.3
Supercell composite: 5.3

Open this sounding in Storm Lab

The text

As transmitted.

938 
WUUS54 KOHX 010424
SVROHX
TNC101-135-181-010500-
/O.NEW.KOHX.SV.W.0124.210801T0424Z-210801T0500Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Nashville TN
1124 PM CDT Sat Jul 31 2021

The National Weather Service in Nashville has issued a

* Severe Thunderstorm Warning for...
  Southwestern Lewis County in Middle Tennessee...
  Wayne County in Middle Tennessee...
  Perry County in Middle Tennessee...

* Until midnight CDT.

* At 1124 PM CDT, severe thunderstorms were located along a line
  extending from near Parsons to 7 miles southeast of Decaturville to
  7 miles southeast of Sardis, moving southeast at 40 mph.

  HAZARD...60 mph wind gusts.

  SOURCE...Radar indicated.

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

* Locations impacted include...
  Hohenwald, Waynesboro, Linden, Collinwood, Clifton, Lobelville,
  Mousetail Landing State Park, Flatwoods and Lutts.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Large hail and damaging winds and continuous cloud to ground
lightning is occurring with these storms. Move indoors immediately.
Lightning is one of nature's leading killers. Remember, if you can
hear thunder, you are close enough to be struck by lightning.

&&

LAT...LON 3547 8802 3548 8799 3551 8798 3562 8804
      3566 8802 3572 8804 3574 8802 3573 8783
      3552 8756 3529 8765 3507 8780 3516 8798
      3529 8798 3530 8802 3535 8801 3539 8802
      3539 8799 3541 8797 3543 8803 3545 8804
TIME...MOT...LOC 0424Z 295DEG 36KT 3570 8808 3549 8806 3535 8821 

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

13

1 follow-up statement

785 
WWUS54 KOHX 010457
SVSOHX

Severe Weather Statement
National Weather Service Nashville TN
1157 PM CDT Sat Jul 31 2021

TNC101-135-181-010507-
/O.EXP.KOHX.SV.W.0124.000000T0000Z-210801T0500Z/
Lewis TN-Wayne TN-Perry TN-
1157 PM CDT Sat Jul 31 2021

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHWESTERN LEWIS...WAYNE AND
PERRY COUNTIES WILL EXPIRE AT MIDNIGHT CDT...
            
The storms which prompted the warning have weakened below severe
limits, and no longer pose an immediate threat to life or property.
Therefore, the warning will be allowed to expire.

A Severe Thunderstorm Watch remains in effect until 300 AM CDT for
Middle Tennessee.

LAT...LON 3547 8802 3548 8799 3551 8798 3562 8804
      3566 8802 3572 8804 3574 8802 3573 8783
      3552 8756 3529 8765 3507 8780 3516 8798
      3529 8798 3530 8802 3535 8801 3539 8802
      3539 8799 3541 8797 3543 8803 3545 8804
TIME...MOT...LOC 0457Z 295DEG 36KT 3556 8772 3535 8770 3521 8785 

$$

13

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 31, 7:03 PM CDT	Severe Thunderstorm Warning	OHX	Robertson	27 min
Jul 31, 7:07 PM CDT	Special Weather Statement	OHX	Robertson	23 min
Jul 31, 7:27 PM CDT	Severe Thunderstorm Warning	OHX	Cheatham, Dickson, Montgomery	20 min
Jul 31, 7:31 PM CDT	Special Weather Statement	OHX	Davidson, Robertson	44 min
Jul 31, 7:41 PM CDT	Special Weather Statement	OHX	Robertson	34 min
Jul 31, 7:51 PM CDT	Special Weather Statement	OHX	Cheatham, Davidson	39 min
Jul 31, 7:58 PM CDT	Severe Thunderstorm Warning	OHX	Davidson, Wilson	47 min
Jul 31, 8:05 PM CDT	Special Weather Statement	OHX	Sumner, Trousdale	40 min
Jul 31, 8:24 PM CDT	Severe Thunderstorm Warning	OHX	Davidson, Williamson	36 min
Jul 31, 8:47 PM CDT	Areal Flood Advisory	OHX	Robertson	4 hr
Jul 31, 8:57 PM CDT	Severe Thunderstorm Warning	OHX	Davidson, Rutherford, Williamson	33 min
Jul 31, 9:10 PM CDT	Severe Thunderstorm Warning	OHX	Houston, Montgomery, Stewart	50 min
Jul 31, 9:16 PM CDT	Special Weather Statement	OHX	Davidson	59 min
Jul 31, 9:48 PM CDT	Special Weather Statement	OHX	Cheatham, Dickson	27 min
Jul 31, 9:53 PM CDT	Areal Flood Advisory	OHX	Cheatham, Davidson, Robertson, Sumner	3 hr
Jul 31, 9:57 PM CDT	Severe Thunderstorm Warning	OHX	Cheatham, Dickson, Hickman, Montgomery, Williamson	33 min
Jul 31, 10:19 PM CDT	Severe Thunderstorm Warning	OHX	Cheatham, Davidson, Marshall, Maury, Williamson	41 min
Jul 31, 10:24 PM CDT	Flash Flood Warning	OHX	Cheatham, Davidson, Williamson	4 hr
Jul 31, 10:52 PM CDT	Severe Thunderstorm Warning	OHX	Bedford, Marshall, Maury, Rutherford, Williamson	38 min
Jul 31, 10:55 PM CDT	Areal Flood Advisory	OHX	Davidson, Rutherford, Wilson	16 min
Jul 31, 11:10 PM CDT	Flash Flood Warning	OHX	Davidson, Rutherford, Wilson	3 hr
Jul 31, 11:26 PM CDT	Severe Thunderstorm Warning	OHX	Bedford, Cannon, Coffee, Marshall, Rutherford, Warren	34 min
Jul 31, 11:36 PM CDT	River Flood Warning	OHX	Davidson	3 hr
Jul 31, 11:41 PM CDT	River Flood Advisory	OHX	Davidson	3 hr
Jul 31, 11:55 PM CDT	Severe Thunderstorm Warning	OHX	Bedford, Cannon, Coffee, Grundy, Rutherford, Van Buren and 1 more	53 min
Aug 1, 2:40 AM CDT	Special Weather Statement	OHX	Wayne	50 min
Aug 1, 3:43 AM CDT	Special Weather Statement	OHX	Wayne	47 min
Aug 1, 4:29 AM CDT	Special Weather Statement	OHX	Lawrence, Wayne	46 min
Aug 1, 6:47 AM CDT	Special Weather Statement	OHX	Giles, Lawrence	43 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.