Alert archive / Mississippi / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 115, NWS Memphis, TN

May 4, 20216 counties in Mississippi

NWS Memphis, TN issued this severe thunderstorm warning at May 4, 2021, 1:27 PM CDT for 6 counties in Mississippi. It was in force for 33 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, 1:27 PM CDT (18:27 UTC)
Expired: May 4, 2021, 2:00 PM CDT
In force: 33 min
Issued by: NWS Memphis, TN
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Benton County, MS, Lafayette County, MS, Marshall County, MS, Panola County, MS, Tate County, MS, Union County, MS

The radar

The Memphis radar (KNQA), 92 km from the middle of the area, began a volume at 18:31 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, 12:18 PM CDT	Severe Thunderstorm Watch	SPC	5 hr

The nearest sounding before it

Little Rock, AR (KLZK), launched 12:00Z, 6.5 hours before the alert went out and 45 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: 10 J/kg
Mixed-layer CIN: -373 J/kg
Mixed-layer LCL: 1101 m above ground
0-6 km bulk shear: 52 kt
0-1 km storm-relative helicity: 62 m²/s²
0-3 km storm-relative helicity: 100 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

443 
WUUS54 KMEG 041827
SVRMEG
MSC009-071-093-107-137-145-041900-
/O.NEW.KMEG.SV.W.0115.210504T1827Z-210504T1900Z/

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

The National Weather Service in Memphis has issued a

* Severe Thunderstorm Warning for...
  Northern Lafayette County in northwestern Mississippi...
  Northwestern Union County in northeastern Mississippi...
  Southern Marshall County in northwestern Mississippi...
  Southeastern Tate County in northwestern Mississippi...
  Southwestern Benton County in northeastern Mississippi...
  Northeastern Panola County in northwestern Mississippi...

* Until 200 PM CDT.

* At 127 PM CDT, a severe thunderstorm was located over Laws Hill, or
  7 miles southwest of Wall Doxey State Park, moving east at 30 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...
  Wall Doxey State Park, John W Kyle State Park, Barr, Harmontown,
  Bethlehem, Laws Hill, Hickory Flat, Potts Camp, Myrtle, Abbeville,
  Malone, Waterford, Spring Hill, Aiken, Crossroad, Tyro, Gilton,
  Chulahoma, Lake Center and Glenville.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3440 8988 3463 8991 3479 8920 3453 8911
TIME...MOT...LOC 1827Z 253DEG 28KT 3457 8955 

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

SWB

2 follow-up statements

460 
WWUS54 KMEG 041850
SVSMEG

Severe Weather Statement
National Weather Service Memphis TN
150 PM CDT Tue May 4 2021

MSC107-041859-
/O.CAN.KMEG.SV.W.0115.000000T0000Z-210504T1900Z/
Panola MS-
150 PM CDT Tue May 4 2021

...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN PANOLA 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 400 PM CDT for
northeastern and northwestern Mississippi.

LAT...LON 3455 8972 3466 8975 3479 8920 3453 8911
      3443 8970
TIME...MOT...LOC 1849Z 253DEG 28KT 3462 8934 

$$

MSC009-071-093-137-145-041900-
/O.CON.KMEG.SV.W.0115.000000T0000Z-210504T1900Z/
Lafayette MS-Union MS-Marshall MS-Tate MS-Benton MS-
150 PM CDT Tue May 4 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 200 PM CDT
FOR NORTHERN LAFAYETTE...NORTHWESTERN UNION...SOUTHERN MARSHALL...
SOUTHEASTERN TATE AND SOUTHWESTERN BENTON COUNTIES...

At 149 PM CDT, a severe thunderstorm was located near Bethlehem, or 7
miles east of Wall Doxey State Park, moving east at 30 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...
Wall Doxey State Park, Harmontown, Bethlehem, Laws Hill, Hickory
Flat, Potts Camp, Myrtle, Abbeville, Malone, Waterford, Spring Hill,
Tyro, Gilton, Chulahoma, Lake Center, Galena, Winborn, Blackwater,
Teckville and Wyatte.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3455 8972 3466 8975 3479 8920 3453 8911
      3443 8970
TIME...MOT...LOC 1849Z 253DEG 28KT 3462 8934 

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

SGW

064 
WWUS54 KMEG 041855
SVSMEG

Severe Weather Statement
National Weather Service Memphis TN
155 PM CDT Tue May 4 2021

MSC009-071-093-137-145-041905-
/O.EXP.KMEG.SV.W.0115.000000T0000Z-210504T1900Z/
Lafayette MS-Union MS-Marshall MS-Tate MS-Benton MS-
155 PM CDT Tue May 4 2021

...THE SEVERE THUNDERSTORM WARNING FOR NORTHERN LAFAYETTE...
NORTHWESTERN UNION...SOUTHERN MARSHALL...SOUTHEASTERN TATE AND
SOUTHWESTERN BENTON COUNTIES WILL EXPIRE AT 200 PM 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.

A Severe Thunderstorm Watch remains in effect until 400 PM CDT for
northeastern and northwestern Mississippi.

LAT...LON 3455 8972 3466 8975 3479 8920 3453 8911
      3443 8970
TIME...MOT...LOC 1855Z 253DEG 28KT 3463 8929 

$$

SGW

The office that day

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

Issued	Product	Office	Counties	Lasted
May 4, 4:47 AM CDT	Areal Flood Advisory	MEG	DeSoto	73 min
May 4, 7:15 AM CDT	Special Weather Statement	MEG	Monroe	30 min
May 4, 9:44 AM CDT	Special Weather Statement	MEG	Monroe	46 min
May 4, 9:48 AM CDT	Special Weather Statement	MEG	Calhoun, Chickasaw, Yalobusha	57 min
May 4, 10:44 AM CDT	Special Weather Statement	MEG	Calhoun, Chickasaw, Lee, Pontotoc	46 min
May 4, 10:52 AM CDT	Special Weather Statement	MEG	Monroe	23 min
May 4, 11:44 AM CDT	Special Weather Statement	MEG	Chickasaw	31 min
May 4, 12:24 PM CDT	Special Weather Statement	MEG	Chickasaw, Monroe	36 min
May 4, 12:36 PM CDT	Special Weather Statement	MEG	Panola, Tate	24 min
May 4, 1:06 PM CDT	Severe Thunderstorm Warning	MEG	Lafayette, Marshall, Panola, Tate	24 min
May 4, 1:53 PM CDT	Special Weather Statement	MEG	Tallahatchie, Yalobusha	37 min
May 4, 2:02 PM CDT	Special Weather Statement	MEG	Benton, Union	28 min
May 4, 2:23 PM CDT	Special Weather Statement	MEG	Calhoun, Lafayette, Union, Yalobusha	22 min
May 4, 2:25 PM CDT	Areal Flood Advisory	MEG	Yalobusha	3 hr
May 4, 2:30 PM CDT	Severe Thunderstorm Warning	MEG	Alcorn, Benton, Tippah	30 min
May 4, 2:37 PM CDT	Severe Thunderstorm Warning	MEG	Itawamba, Lee, Pontotoc, Prentiss, Tishomingo, Union	26 min
May 4, 2:54 PM CDT	Areal Flood Advisory	MEG	Lafayette	3 hr
May 4, 2:58 PM CDT	Severe Thunderstorm Warning	MEG	Calhoun, Chickasaw	47 min
May 4, 3:00 PM CDT	Severe Thunderstorm Warning	MEG	Alcorn, Benton, Tippah	19 min
May 4, 3:02 PM CDT	Severe Thunderstorm Warning	MEG	Itawamba, Lee, Prentiss, Tishomingo, Union	16 min
May 4, 3:17 PM CDT	Severe Thunderstorm Warning	MEG	Itawamba, Lee	28 min
May 4, 3:33 PM CDT	Severe Thunderstorm Warning	MEG	Chickasaw, Itawamba, Lee, Monroe	57 min
May 4, 3:58 PM CDT	Areal Flood Advisory	MEG	Lee	3 hr
May 4, 4:10 PM CDT	Special Weather Statement	MEG	DeSoto	35 min

Nearby

Severe Thunderstorm Warnings in Mississippi, 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.