Alert archive / Tennessee / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 64, NWS Nashville, TN

May 4, 20216 counties in Tennessee

NWS Nashville, TN issued this severe thunderstorm warning at May 4, 2021, 5:02 AM CDT for 6 counties in Tennessee. It was in force for 58 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: May 4, 2021, 5:02 AM CDT (10:02 UTC)
Expired: May 4, 2021, 6:00 AM CDT
In force: 58 min
Issued by: NWS Nashville, TN
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Cheatham County, TN, Dickson County, TN, Hickman County, TN, Houston County, TN, Humphreys County, TN, Perry County, TN

The radar

The Ft Campbell radar (KHPX), 103 km from the middle of the area, began a volume at 10:00 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
May 4, 1:41 AM CDT	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

Nashville Metro, TN (KBNA), launched 00:00Z, 10.0 hours before the alert went out and 113 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.

970 
WUUS54 KOHX 041002
SVROHX
TNC021-043-081-083-085-135-041100-
/O.NEW.KOHX.SV.W.0064.210504T1002Z-210504T1100Z/

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

The National Weather Service in Nashville has issued a

* Severe Thunderstorm Warning for...
  Dickson County in Middle Tennessee...
  Southeastern Cheatham County in Middle Tennessee...
  Southeastern Houston County in Middle Tennessee...
  Northern Perry County in Middle Tennessee...
  Humphreys County in Middle Tennessee...
  Central Hickman County in Middle Tennessee...

* Until 600 AM CDT.

* At 501 AM CDT, severe thunderstorms were located along a line 
  extending from McEwen to Parsons, moving east at 50 mph.

  HAZARD...60 mph wind gusts and quarter size hail.

  SOURCE...Radar indicated.

  IMPACT...Hail damage to vehicles is expected. Expect wind damage 
           to roofs, siding, and trees.

* Locations impacted include...
  Dickson, Ashland City, Waverly, Centerville, Camden, White Bluff,
  Kingston Springs, New Johnsonville, McEwen, Burns, Hurricane Mills,
  Charlotte, Lobelville, Vanleer, Bon Aqua, Lyles, Bucksnort,
  Pinewood, Nunnelly and I-40 Near The Tennessee River.

This includes the following highways...
 Interstate 40 between mile markers 136 and 180.
 Interstate 840 between mile markers 1 and 3.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3577 8798 3583 8797 3587 8794 3592 8793
      3594 8793 3594 8798 3595 8801 3597 8802
      3605 8799 3625 8783 3625 8698 3605 8718
      3573 8746 3570 8803 3573 8803
TIME...MOT...LOC 1001Z 253DEG 44KT 3621 8767 3577 8814 

HAIL...1.00IN
WIND...60MPH
 
$$

Shamburger

2 follow-up statements

484 
WWUS54 KOHX 041029
SVSOHX

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

TNC083-041038-
/O.CAN.KOHX.SV.W.0064.000000T0000Z-210504T1100Z/
Houston TN-
529 AM CDT Tue May 4 2021

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN HOUSTON COUNTY IS
CANCELLED...

The storms which prompted the warning have moved out of the warned 
area. Therefore, the warning has been cancelled.

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

LAT...LON 3577 8798 3583 8797 3587 8794 3592 8793
      3594 8793 3625 8743 3625 8698 3605 8718
      3573 8746 3570 8803 3573 8803
TIME...MOT...LOC 1028Z 263DEG 34KT 3624 8732 3576 8784 

$$

TNC021-043-081-085-135-041100-
/O.CON.KOHX.SV.W.0064.000000T0000Z-210504T1100Z/
Dickson TN-Cheatham TN-Perry TN-Humphreys TN-Hickman TN-
529 AM CDT Tue May 4 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 600 AM CDT
FOR DICKSON...SOUTHEASTERN CHEATHAM...NORTHERN PERRY...SOUTHERN
HUMPHREYS AND CENTRAL HICKMAN COUNTIES...

At 528 AM CDT, severe thunderstorms were located along a line 
extending from Cumberland Furnace to Lobelville, moving east at 40 
mph.

HAZARD...60 mph wind gusts and quarter size hail.

SOURCE...Radar indicated.

IMPACT...Hail damage to vehicles is expected. Expect wind damage to 
         roofs, siding, and trees.

Locations impacted include...
Dickson, Ashland City, Centerville, White Bluff, Kingston Springs,
McEwen, Burns, Hurricane Mills, Charlotte, Lobelville, Vanleer, Bon
Aqua, Lyles, Bucksnort, Pinewood, Nunnelly and I-40 Near The
Tennessee River.

This includes the following highways...
 Interstate 40 between mile markers 136 and 180.
 Interstate 840 between mile markers 1 and 3.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3577 8798 3583 8797 3587 8794 3592 8793
      3594 8793 3625 8743 3625 8698 3605 8718
      3573 8746 3570 8803 3573 8803
TIME...MOT...LOC 1028Z 263DEG 34KT 3624 8732 3576 8784 

HAIL...1.00IN
WIND...60MPH
 
$$

Shamburger

534 
WWUS54 KOHX 041052
SVSOHX

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

TNC021-043-081-085-135-041101-
/O.EXP.KOHX.SV.W.0064.000000T0000Z-210504T1100Z/
Dickson TN-Cheatham TN-Perry TN-Humphreys TN-Hickman TN-
552 AM CDT Tue May 4 2021

...THE SEVERE THUNDERSTORM WARNING FOR DICKSON...SOUTHEASTERN
CHEATHAM...NORTHERN PERRY...SOUTHERN HUMPHREYS AND CENTRAL HICKMAN
COUNTIES WILL EXPIRE AT 600 AM 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.  However gusty
winds over 50 mph are still possible with these thunderstorms.

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

To report severe weather, contact your nearest law enforcement
agency. They will relay your report to the National Weather Service
Nashville.

LAT...LON 3577 8798 3583 8797 3587 8794 3592 8793
      3594 8793 3625 8743 3625 8698 3605 8718
      3573 8746 3570 8803 3573 8803
TIME...MOT...LOC 1051Z 268DEG 44KT 3624 8698 3576 8750 

$$

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, 5:39 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.