Alert archive / Mississippi / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 116, NWS Memphis, TN

May 4, 2021Alcorn County, Benton County, Tippah County, Mississippi

NWS Memphis, TN issued this severe thunderstorm warning at May 4, 2021, 2:30 PM CDT for Alcorn County, Benton County, Tippah County, Mississippi. It was in force for 30 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, 2:30 PM CDT (19:30 UTC)
Expired
May 4, 2021, 3:00 PM CDT
In force
30 min
Issued by
NWS Memphis, TN
Area
Storm-based polygon
Hail
1.0 in
Wind
60.0 mph

Counties Alcorn County, MS, Benton County, MS, Tippah County, MS

The radar

The Memphis radar (KNQA), 94 km from the middle of the area, began a volume at 19:32 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, 2:45 PM CDTHAIL 1Ashland, MSA SMALL AMOUNT OF QUARTER INCH FELL IN ASHLAND.

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, 12:18 PM CDTSevere Thunderstorm WatchSPC5 hr

The nearest sounding before it

Little Rock, AR (KLZK), launched 12:00Z, 7.5 hours before the alert went out and 83 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, Little Rock, AR at 12:00Z on 2021-05-04Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 10 joules per kilogram.LCLLFCEL10008507005003002001001 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, Little Rock, AR at 12:00Z on 2021-05-04The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 62 square meters per square second.1939587897Sfc1 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
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.

276 
WUUS54 KMEG 041930
SVRMEG
MSC003-009-139-042000-
/O.NEW.KMEG.SV.W.0116.210504T1930Z-210504T2000Z/

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

The National Weather Service in Memphis has issued a

* Severe Thunderstorm Warning for...
  Central Tippah County in northeastern Mississippi...
  Central Benton County in northeastern Mississippi...
  Western Alcorn County in northeastern Mississippi...

* Until 300 PM CDT.

* At 230 PM CDT, a severe thunderstorm was located over Snow Lake
  Shores, or 12 miles east of Holly Springs, 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...
  Ripley, Snow Lake Shores, Canaan, Gravestown, Walnut, Ashland,
  Falkner, Chalybeate, Murry, Brody, Brownfield, Whitten Town,
  Hamilton, Peoples and Tiplersville.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3472 8873 3475 8930 3484 8930 3485 8931
      3490 8932 3500 8885 3499 8878
TIME...MOT...LOC 1930Z 263DEG 36KT 3482 8923 

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

SWB
3 follow-up statements
434 
WWUS54 KMEG 041941
SVSMEG

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

MSC003-009-139-042000-
/O.CON.KMEG.SV.W.0116.000000T0000Z-210504T2000Z/
Tippah MS-Benton MS-Alcorn MS-
241 PM CDT Tue May 4 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 300 PM CDT
FOR NORTHERN TIPPAH...NORTHERN BENTON AND WESTERN ALCORN COUNTIES...

At 240 PM CDT, a severe thunderstorm was located near Snow Lake
Shores, or 15 miles northwest of Ripley, 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...
Snow Lake Shores, Canaan, Walnut, Ashland, Falkner, Brownfield,
Chalybeate, Brody, Hamilton, Tiplersville and Peoples.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3479 8874 3477 8925 3490 8932 3500 8885
      3499 8878
TIME...MOT...LOC 1940Z 249DEG 28KT 3486 8917 

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

SGW
042 
WWUS54 KMEG 041947
SVSMEG

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

MSC003-009-139-042000-
/O.CON.KMEG.SV.W.0116.000000T0000Z-210504T2000Z/
Tippah MS-Benton MS-Alcorn MS-
247 PM CDT Tue May 4 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 300 PM CDT
FOR NORTHERN TIPPAH...NORTHEASTERN BENTON AND WESTERN ALCORN
COUNTIES...

At 247 PM CDT, a severe thunderstorm was located near Canaan, or 12
miles northwest of Ripley, 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...
Canaan, Walnut, Ashland, Falkner, Brownfield, Chalybeate, Brody,
Whitten Town, Hamilton, Peoples and Tiplersville.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3477 8919 3491 8928 3500 8885 3499 8878
      3479 8874
TIME...MOT...LOC 1947Z 263DEG 36KT 3487 8908 

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

SWB
876 
WWUS54 KMEG 041951
SVSMEG

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

MSC003-009-139-042001-
/O.EXP.KMEG.SV.W.0116.000000T0000Z-210504T2000Z/
Tippah MS-Benton MS-Alcorn MS-
251 PM CDT Tue May 4 2021

...THE SEVERE THUNDERSTORM WARNING FOR NORTHERN TIPPAH...NORTHEASTERN
BENTON AND WESTERN ALCORN COUNTIES WILL EXPIRE AT 300 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
and gusty winds are still possible with this thunderstorm.

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

LAT...LON 3477 8919 3491 8928 3500 8885 3499 8878
      3479 8874
TIME...MOT...LOC 1951Z 263DEG 36KT 3487 8905 

$$

SWB

The office that day

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

IssuedProductOfficeCountiesLasted
May 4, 4:47 AM CDTAreal Flood AdvisoryMEGDeSoto73 min
May 4, 7:15 AM CDTSpecial Weather StatementMEGMonroe30 min
May 4, 9:44 AM CDTSpecial Weather StatementMEGMonroe46 min
May 4, 9:48 AM CDTSpecial Weather StatementMEGCalhoun, Chickasaw, Yalobusha57 min
May 4, 10:44 AM CDTSpecial Weather StatementMEGCalhoun, Chickasaw, Lee, Pontotoc46 min
May 4, 10:52 AM CDTSpecial Weather StatementMEGMonroe23 min
May 4, 11:44 AM CDTSpecial Weather StatementMEGChickasaw31 min
May 4, 12:24 PM CDTSpecial Weather StatementMEGChickasaw, Monroe36 min
May 4, 12:36 PM CDTSpecial Weather StatementMEGPanola, Tate24 min
May 4, 1:06 PM CDTSevere Thunderstorm WarningMEGLafayette, Marshall, Panola, Tate24 min
May 4, 1:27 PM CDTSevere Thunderstorm WarningMEGBenton, Lafayette, Marshall, Panola, Tate, Union33 min
May 4, 1:53 PM CDTSpecial Weather StatementMEGTallahatchie, Yalobusha37 min
May 4, 2:02 PM CDTSpecial Weather StatementMEGBenton, Union28 min
May 4, 2:23 PM CDTSpecial Weather StatementMEGCalhoun, Lafayette, Union, Yalobusha22 min
May 4, 2:25 PM CDTAreal Flood AdvisoryMEGYalobusha3 hr
May 4, 2:37 PM CDTSevere Thunderstorm WarningMEGItawamba, Lee, Pontotoc, Prentiss, Tishomingo, Union26 min
May 4, 2:54 PM CDTAreal Flood AdvisoryMEGLafayette3 hr
May 4, 2:58 PM CDTSevere Thunderstorm WarningMEGCalhoun, Chickasaw47 min
May 4, 3:00 PM CDTSevere Thunderstorm WarningMEGAlcorn, Benton, Tippah19 min
May 4, 3:02 PM CDTSevere Thunderstorm WarningMEGItawamba, Lee, Prentiss, Tishomingo, Union16 min
May 4, 3:17 PM CDTSevere Thunderstorm WarningMEGItawamba, Lee28 min
May 4, 3:33 PM CDTSevere Thunderstorm WarningMEGChickasaw, Itawamba, Lee, Monroe57 min
May 4, 3:58 PM CDTAreal Flood AdvisoryMEGLee3 hr
May 4, 4:10 PM CDTSpecial Weather StatementMEGDeSoto35 min

Nearby

Severe Thunderstorm Warnings in Mississippi, 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.