Alert archive / Tennessee / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 113, NWS Memphis, TN

May 4, 20215 counties in Tennessee

NWS Memphis, TN issued this severe thunderstorm warning at May 4, 2021, 4:43 AM CDT for 5 counties in Tennessee. It was in force for 47 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, 4:43 AM CDT (09:43 UTC)
Expired
May 4, 2021, 5:30 AM CDT
In force
47 min
Issued by
NWS Memphis, TN
Area
Storm-based polygon
Hail
1.0 in
Wind
60.0 mph

Counties Benton County, TN, Carroll County, TN, Decatur County, TN, Henderson County, TN, Henry County, TN

The radar

The Ft Campbell radar (KHPX), 113 km from the middle of the area, began a volume at 09:47 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

TimeReportWhereRemark
May 4, 5:15 AM CDTTSTM WND DMG5 Nnw Parsons, TNTREES AND POWER LINES DOWN ON EVANSTOWN RD NORTH OF PARSONS.

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.

IssuedProductOfficeLasted
May 4, 1:41 AM CDTSevere Thunderstorm WatchSPC6 hr

The nearest sounding before it

Nashville Metro, TN (KBNA), launched 00:00Z, 9.7 hours before the alert went out and 138 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-pSkew-T log-p diagram, Nashville Metro, TN at 00:00Z on 2021-05-04Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2263 joules per kilogram.LCLEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Nashville Metro, TN at 00:00Z on 2021-05-04The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 119 square meters per square second.19395878Sfc1 km3 km6 km9 kmRMLM
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.

028 
WUUS54 KMEG 040943
SVRMEG
TNC005-017-039-077-079-041045-
/O.NEW.KMEG.SV.W.0113.210504T0943Z-210504T1045Z/

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

The National Weather Service in Memphis has issued a

* Severe Thunderstorm Warning for...
  Northern Henderson County in western Tennessee...
  Benton County in western Tennessee...
  Carroll County in western Tennessee...
  Southeastern Henry County in western Tennessee...
  Northern Decatur County in western Tennessee...

* Until 545 AM CDT.

* At 442 AM CDT, severe thunderstorms were located along a line
  extending from near Springville to near Blue Goose, moving
  northeast at 35 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...
  Lexington, Huntingdon, Camden, Natchez Trace State Park, Natchez
  Trace State Forest, New Johnsonville, Bruceton, Blue Goose, Vale,
  Bargerton, Wildersville, Springville, Parkers Crossroads, Hollow
  Rock, Big Sandy, Henry, Clarksburg, Hickory Flat, Dollar and Old
  Springville.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3597 8802 3594 8800 3594 8793 3591 8793
      3577 8798 3572 8803 3570 8803 3566 8861
      3579 8861 3595 8858 3620 8839 3635 8798
      3627 8794 3622 8795 3615 8792
TIME...MOT...LOC 0942Z 239DEG 32KT 3617 8813 3565 8864 

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

MJ
4 follow-up statements
845 
WWUS54 KMEG 040954
SVSMEG

Severe Weather Statement
National Weather Service Memphis TN
454 AM CDT Tue May 4 2021

TNC005-017-039-077-079-041045-
/O.CON.KMEG.SV.W.0113.000000T0000Z-210504T1045Z/
Henderson TN-Benton TN-Carroll TN-Henry TN-Decatur TN-
454 AM CDT Tue May 4 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 545 AM CDT
FOR NORTHERN HENDERSON...BENTON...CARROLL...SOUTHEASTERN HENRY AND
NORTHERN DECATUR COUNTIES...

At 454 AM CDT, a severe thunderstorm was located over Wildersville,
or near Natchez Trace State Park, moving northeast 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...
Lexington, Huntingdon, Camden, Natchez Trace State Park, Natchez
Trace State Forest, New Johnsonville, Bruceton, Blue Goose, Vale,
Bargerton, Wildersville, Springville, Parkers Crossroads, Hollow
Rock, Big Sandy, Henry, Clarksburg, Hickory Flat, Dollar and Old
Springville.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3597 8802 3594 8800 3594 8793 3591 8793
      3577 8798 3572 8803 3570 8803 3566 8861
      3579 8861 3595 8858 3620 8839 3635 8798
      3627 8794 3622 8795 3615 8792
TIME...MOT...LOC 0954Z 242DEG 35KT 3579 8832 

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

MJ
240 
WWUS54 KMEG 041003
SVSMEG

Severe Weather Statement
National Weather Service Memphis TN
503 AM CDT Tue May 4 2021

TNC079-041013-
/O.CAN.KMEG.SV.W.0113.000000T0000Z-210504T1045Z/
Henry TN-
503 AM CDT Tue May 4 2021

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN HENRY COUNTY IS
CANCELLED...
    
The severe 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 800 AM CDT for
western Tennessee.

LAT...LON 3597 8802 3594 8800 3594 8793 3591 8793
      3577 8798 3572 8803 3570 8803 3566 8861
      3579 8861 3596 8843 3611 8823 3623 8795
      3622 8795 3615 8792
TIME...MOT...LOC 1003Z 239DEG 32KT 3583 8823 

$$

TNC005-017-039-077-041045-
/O.CON.KMEG.SV.W.0113.000000T0000Z-210504T1045Z/
Henderson TN-Benton TN-Carroll TN-Decatur TN-
503 AM CDT Tue May 4 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 545 AM CDT
FOR NORTHERN HENDERSON...BENTON...SOUTHEASTERN CARROLL AND NORTHERN
DECATUR COUNTIES...

At 503 AM CDT, a severe thunderstorm was located near Natchez Trace
State Park, moving northeast at 35 mph.

HAZARD...60 mph wind gusts.

SOURCE...Radar indicated.

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

Locations impacted include...
Lexington, Huntingdon, Camden, Natchez Trace State Park, Natchez
Trace State Forest, New Johnsonville, Bruceton, Blue Goose, Parkers
Crossroads, Bargerton, Wildersville, Hollow Rock, Clarksburg,
Hillard, Dollar, Cedar Grove, Jeannette, Union Cross, Juno and
Holladay.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3597 8802 3594 8800 3594 8793 3591 8793
      3577 8798 3572 8803 3570 8803 3566 8861
      3579 8861 3596 8843 3611 8823 3623 8795
      3622 8795 3615 8792
TIME...MOT...LOC 1003Z 239DEG 32KT 3583 8823 

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

MJ
292 
WWUS54 KMEG 041019
SVSMEG

Severe Weather Statement
National Weather Service Memphis TN
519 AM CDT Tue May 4 2021

TNC005-017-039-077-041045-
/O.CON.KMEG.SV.W.0113.000000T0000Z-210504T1045Z/
Henderson TN-Benton TN-Carroll TN-Decatur TN-
519 AM CDT Tue May 4 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 545 AM CDT
FOR NORTHERN HENDERSON...SOUTHERN BENTON...SOUTHEASTERN CARROLL AND
NORTHERN DECATUR COUNTIES...

At 519 AM CDT, a severe thunderstorm was located 9 miles southwest of
New Johnsonville, or 9 miles southwest of Camden, moving northeast at
35 mph.

HAZARD...60 mph wind gusts.

SOURCE...Radar indicated.

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

Locations impacted include...
Lexington, Camden, Natchez Trace State Park, Natchez Trace State
Forest, New Johnsonville, Blue Goose, Parkers Crossroads, Bargerton,
Wildersville, Clarksburg, Dollar, Cedar Grove, Jeannette, Union
Cross, Juno, Holladay, Sugar Tree, Timberlake, Cozette and Buena
Vista.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3597 8802 3594 8800 3594 8793 3591 8793
      3577 8798 3572 8803 3570 8803 3566 8861
      3579 8861 3595 8837 3615 8792
TIME...MOT...LOC 1019Z 237DEG 32KT 3592 8809 

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

MJ
282 
WWUS54 KMEG 041030
SVSMEG

Severe Weather Statement
National Weather Service Memphis TN
530 AM CDT Tue May 4 2021

TNC005-017-039-077-041040-
/O.CAN.KMEG.SV.W.0113.000000T0000Z-210504T1045Z/
Henderson TN-Benton TN-Carroll TN-Decatur TN-
530 AM CDT Tue May 4 2021

...THE SEVERE THUNDERSTORM WARNING FOR NORTHERN HENDERSON...SOUTHERN
BENTON...SOUTHEASTERN CARROLL AND NORTHERN DECATUR COUNTIES IS
CANCELLED...
        
The storm which prompted the warning has weakened below severe
limits, and has exited the warned area. Therefore, the warning has
been cancelled.  However gusty winds are still possible with this
thunderstorm.

A Severe Thunderstorm Watch remains in effect until 800 AM CDT for
western Tennessee.

LAT...LON 3597 8802 3594 8800 3594 8793 3591 8793
      3577 8798 3572 8803 3570 8803 3566 8861
      3579 8861 3595 8837 3615 8792
TIME...MOT...LOC 1029Z 239DEG 32KT 3597 8798 

$$

MJ

The office that day

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

IssuedProductOfficeCountiesLasted
May 4, 2:34 AM CDTSevere Thunderstorm WarningMEGTipton41 min
May 4, 2:59 AM CDTSevere Thunderstorm WarningMEGDyer, Lake, Lauderdale, Obion46 min
May 4, 3:10 AM CDTSpecial Weather StatementMEGShelby, Tipton35 min
May 4, 3:28 AM CDTSevere Thunderstorm WarningMEGCarroll, Crockett, Dyer, Gibson, Obion, Weakley47 min
May 4, 3:46 AM CDTSpecial Weather StatementMEGCrockett44 min
May 4, 3:54 AM CDTSpecial Weather StatementMEGFayette, Haywood, Shelby, Tipton51 min
May 4, 4:10 AM CDTSpecial Weather StatementMEGHenry35 min
May 4, 4:18 AM CDTSevere Thunderstorm WarningMEGBenton, Carroll, Henry, Weakley27 min
May 4, 4:20 AM CDTSpecial Weather StatementMEGGibson25 min
May 4, 4:47 AM CDTAreal Flood AdvisoryMEGFayette, Shelby73 min
May 4, 11:40 AM CDTRiver Flood WarningMEGCrockett, Dyer, Lauderdale7 days
May 4, 3:00 PM CDTSevere Thunderstorm WarningMEGHardeman19 min
May 4, 5:28 PM CDTSpecial Weather StatementMEGHenry32 min
May 4, 5:43 PM CDTAreal Flood AdvisoryMEGShelby3 hr
May 4, 6:29 PM CDTSevere Thunderstorm WarningMEGShelby, Tipton46 min
May 4, 6:56 PM CDTSpecial Weather StatementMEGLake34 min

Nearby

Severe Thunderstorm Warnings in Tennessee, 2021Every 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.