Alert archive / Tennessee / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 59, NWS Nashville, TN

May 4, 2021Clay County, Overton County, Tennessee

NWS Nashville, TN issued this severe thunderstorm warning at May 4, 2021, 1:34 AM CDT for Clay County, Overton County, Tennessee. It was in force for 26 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: May 4, 2021, 1:34 AM CDT (06:34 UTC)
Expired: May 4, 2021, 2:00 AM CDT
In force: 26 min
Issued by: NWS Nashville, TN
Area: Storm-based polygon
Hail: 1.0 in
Wind: 50.0 mph

Counties Clay County, TN, Overton County, TN

The radar

The Nashville radar (KOHX), 116 km from the middle of the area, began a volume at 06:33 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, 1:55 AM CDT	HAIL 1	8 E Celina, TN

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, 6.6 hours before the alert went out and 124 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.

967 
WUUS54 KOHX 040634
SVROHX
TNC027-133-040700-
/O.NEW.KOHX.SV.W.0059.210504T0634Z-210504T0700Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Nashville TN
134 AM CDT Tue May 4 2021

The National Weather Service in Nashville has issued a

* Severe Thunderstorm Warning for...
  Northwestern Overton County in Middle Tennessee...
  Eastern Clay County in Middle Tennessee...

* Until 200 AM CDT.

* At 134 AM CDT, a severe thunderstorm was located over Celina,
  moving east at 30 mph.

  HAZARD...Quarter size hail.

  SOURCE...Radar indicated.

  IMPACT...Damage to vehicles is expected.

* Locations impacted include...
  Livingston, Celina, Dale Hollow Lake 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 3659 8528 3657 8527 3655 8528 3654 8528
      3654 8527 3653 8526 3641 8526 3642 8551
      3660 8551 3662 8528
TIME...MOT...LOC 0634Z 260DEG 24KT 3652 8550 

HAIL...1.00IN
WIND...<50MPH
 
$$

Schaper

2 follow-up statements

509 
WWUS54 KOHX 040652
SVSOHX

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

TNC027-133-040700-
/O.CON.KOHX.SV.W.0059.000000T0000Z-210504T0700Z/
Overton TN-Clay TN-
152 AM CDT Tue May 4 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 200 AM CDT
FOR NORTHWESTERN OVERTON AND NORTHEASTERN CLAY COUNTIES...

At 152 AM CDT, a severe thunderstorm was located near Celina, moving
east at 25 mph.

HAZARD...Quarter size hail.

SOURCE...Radar indicated.

IMPACT...Damage to vehicles is expected.

Locations impacted include...
Dale Hollow Lake.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3659 8528 3657 8527 3655 8528 3654 8528
      3654 8527 3653 8526 3644 8526 3646 8547
      3660 8549 3662 8528
TIME...MOT...LOC 0652Z 269DEG 22KT 3652 8538 

HAIL...1.00IN
WIND...<50MPH
 
$$

Schaper

181 
WWUS54 KOHX 040657
SVSOHX

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

TNC027-133-040706-
/O.EXP.KOHX.SV.W.0059.000000T0000Z-210504T0700Z/
Overton TN-Clay TN-
157 AM CDT Tue May 4 2021

...THE SEVERE THUNDERSTORM WARNING FOR NORTHWESTERN OVERTON AND
NORTHEASTERN CLAY COUNTIES WILL EXPIRE AT 200 AM CDT...
                
The storm which prompted the warning has weakened below severe
limits, and no longer poses an immediate threat to life or property.
Therefore, the warning will be allowed to expire. However small hail 
is still possible with this thunderstorm.

LAT...LON 3659 8528 3657 8527 3655 8528 3654 8528
      3654 8527 3653 8526 3644 8526 3646 8547
      3660 8549 3662 8528
TIME...MOT...LOC 0656Z 260DEG 24KT 3652 8535 

$$

Schaper

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, 1:54 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, 6:42 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

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.