Alert archive / Mississippi / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 26, NWS Memphis, TN

March 17, 20215 counties in Mississippi

NWS Memphis, TN issued this severe thunderstorm warning at Mar 17, 2021, 7:44 PM CDT for 5 counties in Mississippi. It was in force for 31 min. 6 reports 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
Mar 17, 2021, 7:44 PM CDT (00:44 UTC)
Expired
Mar 17, 2021, 8:15 PM CDT
In force
31 min
Issued by
NWS Memphis, TN
Area
Storm-based polygon
Hail
0.75 in
Wind
60.0 mph

Counties Itawamba County, MS, Lee County, MS, Monroe County, MS, Prentiss County, MS, Tishomingo County, MS

The radar

The Columbus AFB radar (KGWX), 55 km from the middle of the area, began a volume at 00:49 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
Mar 17, 7:45 PM CDTTSTM WND DMGNe Nettleton, MSSEVERAL TREES DOWN BETWEEN NETTLETON AND RICHMOND ON HIGHWAYS 452 AND 1411.
Mar 17, 7:45 PM CDTTSTM WND DMGNe Nettleton, MSSEVERAL TREES DOWN BETWEEN NETTLETON AND RICHMOND ON HIGHWAYS 452 AND 1411.
Mar 17, 7:48 PM CDTTSTM WND DMG4 E Verona, MSSEVERAL TREES DOWN IN RICHMOND.
Mar 17, 7:48 PM CDTTSTM WND DMG4 E Verona, MSSEVERAL TREES DOWN IN RICHMOND
Mar 17, 7:55 PM CDTTSTM WND DMGFulton, MSA FEW TREES DOWN IN FULTON ON SOUTH AND NORTH CUMMINGS STREETS.
Mar 17, 8:24 PM CDTTSTM WND DMG4 E Verona, MSTREES DOWN IN RICHMOND

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
Mar 17, 7:07 PM CDTTornado WatchSPC3 hr

The nearest sounding before it

Little Rock, AR (KLZK), launched 00:00Z, 0.7 hours before the alert went out and 137 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 00:00Z on 2021-03-18Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 959 joules per kilogram.LCLEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Little Rock, AR at 00:00Z on 2021-03-18The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 133 square meters per square second.1939587897117136Sfc1 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
959 J/kg
Mixed-layer CIN
-1 J/kg
Mixed-layer LCL
873 m above ground
0-6 km bulk shear
71 kt
0-1 km storm-relative helicity
133 m²/s²
0-3 km storm-relative helicity
134 m²/s²
Significant tornado parameter
0.8
Supercell composite
4.3

Open this sounding in Storm Lab

The text

As transmitted.

840 
WUUS54 KMEG 180044
SVRMEG
MSC057-081-095-117-141-180130-
/O.NEW.KMEG.SV.W.0026.210318T0044Z-210318T0130Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Memphis TN
744 PM CDT Wed Mar 17 2021

The National Weather Service in Memphis has issued a

* Severe Thunderstorm Warning for...
  Itawamba County in northeastern Mississippi...
  Lee County in northeastern Mississippi...
  Northern Monroe County in northeastern Mississippi...
  Southern Tishomingo County in northeastern Mississippi...
  Southern Prentiss County in northeastern Mississippi...

* Until 830 PM CDT.

* At 744 PM CDT, a severe thunderstorm was located over
  Plantersville, or near Verona, moving northeast at 55 mph.

  HAZARD...60 mph wind gusts.

  SOURCE...Radar indicated.

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

* Locations impacted include...
  Tupelo, Fulton, Baldwyn, Red Bay, Verona, Tombigbee State Park,
  Saltillo, Guntown, Belmont, Shannon, Plantersville, Mantachie,
  Smithville, Tremont, Fairview, Pratts Friendship, New Salem,
  Wheeler, Sandy Springs and Blair.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Tornado Watch remains in effect until midnight CDT for northeastern
Mississippi.

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

Intense thunderstorm lines can produce brief tornadoes and widespread
significant wind damage. Although a tornado is not immediately
likely, it is best to move to an interior room on the lowest floor of
a building. This storm may cause serious injury and significant
property damage.

&&

LAT...LON 3401 8821 3410 8882 3423 8883 3450 8875
      3450 8874 3456 8874 3462 8872 3458 8814
TIME...MOT...LOC 0044Z 207DEG 50KT 3420 8867 

HAIL...<.75IN
WIND...60MPH
 
$$
3 follow-up statements
907 
WWUS54 KMEG 180104
SVSMEG

Severe Weather Statement
National Weather Service Memphis TN
804 PM CDT Wed Mar 17 2021

MSC095-180114-
/O.CAN.KMEG.SV.W.0026.000000T0000Z-210318T0130Z/
Monroe MS-
804 PM CDT Wed Mar 17 2021

...THE SEVERE THUNDERSTORM WARNING FOR NORTHERN MONROE COUNTY IS
CANCELLED...
    
The severe thunderstorm which prompted the warning has moved out of 
the warned area. Therefore, the warning has been cancelled.

A Tornado Watch remains in effect until midnight CDT for northeastern
Mississippi.

LAT...LON 3426 8818 3421 8868 3461 8864 3458 8814
TIME...MOT...LOC 0104Z 207DEG 50KT 3445 8852 

$$

MSC057-081-117-141-180130-
/O.CON.KMEG.SV.W.0026.000000T0000Z-210318T0130Z/
Itawamba MS-Lee MS-Tishomingo MS-Prentiss MS-
804 PM CDT Wed Mar 17 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 830 PM CDT
FOR ITAWAMBA...NORTHEASTERN LEE...SOUTHERN TISHOMINGO AND SOUTHERN
PRENTISS COUNTIES...

At 804 PM CDT, a severe thunderstorm was located near Pratts
Friendship, or 8 miles southeast of Baldwyn, moving northeast at 60
mph.

HAZARD...60 mph wind gusts.

SOURCE...Radar indicated.

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

Locations impacted include...
Tupelo, Fulton, Baldwyn, Red Bay, Tombigbee State Park, Guntown,
Belmont, Plantersville, Mantachie, Tremont, Fairview, Wheeler, Pratts
Friendship, Sandy Springs, Clay, Marietta, Golden, Eastman, Thrasher
and Dennis.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Tornado Watch remains in effect until midnight CDT for northeastern
Mississippi.

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

Intense thunderstorm lines can produce brief tornadoes and widespread
significant wind damage. Although a tornado is not immediately
likely, it is best to move to an interior room on the lowest floor of
a building. This storm may cause serious injury and significant
property damage.

&&

LAT...LON 3426 8818 3421 8868 3461 8864 3458 8814
TIME...MOT...LOC 0104Z 207DEG 50KT 3445 8852 

HAIL...<.75IN
WIND...60MPH
 
$$
856 
WWUS54 KMEG 180111
SVSMEG

Severe Weather Statement
National Weather Service Memphis TN
811 PM CDT Wed Mar 17 2021

MSC081-180121-
/O.CAN.KMEG.SV.W.0026.000000T0000Z-210318T0130Z/
Lee MS-
811 PM CDT Wed Mar 17 2021

...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN LEE COUNTY IS
CANCELLED...
    
The severe thunderstorm which prompted the warning has moved out of 
the warned area. Therefore, the warning has been cancelled.

A Tornado Watch remains in effect until midnight CDT for northeastern
Mississippi.

LAT...LON 3426 8818 3432 8854 3460 8853 3458 8814
TIME...MOT...LOC 0111Z 207DEG 50KT 3454 8846 

$$

MSC057-117-141-180130-
/O.CON.KMEG.SV.W.0026.000000T0000Z-210318T0130Z/
Itawamba MS-Tishomingo MS-Prentiss MS-
811 PM CDT Wed Mar 17 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 830 PM CDT
FOR NORTHERN ITAWAMBA...SOUTHERN TISHOMINGO AND SOUTHEASTERN PRENTISS
COUNTIES...

At 811 PM CDT, a severe thunderstorm was located 8 miles east of
Wheeler, or 10 miles east of Baldwyn, moving northeast at 60 mph.

HAZARD...60 mph wind gusts.

SOURCE...Radar indicated.

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

Locations impacted include...
Red Bay, Belmont, Mantachie, Sandy Springs, Fairview, Marietta,
Golden, Eastman, Thrasher, Dennis, Moores Mill, Kirkville, Bounds
Crossroads and Hobo Station.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Tornado Watch remains in effect until midnight CDT for northeastern
Mississippi.

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

Intense thunderstorm lines can produce brief tornadoes and widespread
significant wind damage. Although a tornado is not immediately
likely, it is best to move to an interior room on the lowest floor of
a building. This storm may cause serious injury and significant
property damage.

&&

LAT...LON 3426 8818 3432 8854 3460 8853 3458 8814
TIME...MOT...LOC 0111Z 207DEG 50KT 3454 8846 

HAIL...<.75IN
WIND...60MPH
 
$$
750 
WWUS54 KMEG 180115
SVSMEG

Severe Weather Statement
National Weather Service Memphis TN
815 PM CDT Wed Mar 17 2021

MSC057-117-141-180125-
/O.CAN.KMEG.SV.W.0026.000000T0000Z-210318T0130Z/
Itawamba MS-Tishomingo MS-Prentiss MS-
815 PM CDT Wed Mar 17 2021

...THE SEVERE THUNDERSTORM WARNING FOR NORTHERN ITAWAMBA...SOUTHERN
TISHOMINGO AND SOUTHEASTERN PRENTISS COUNTIES IS CANCELLED...
                
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 has been cancelled.  However gusty winds are
still possible with this thunderstorm.

A Tornado Watch remains in effect until midnight CDT for northeastern
Mississippi.

LAT...LON 3426 8818 3432 8854 3460 8853 3458 8814
TIME...MOT...LOC 0114Z 207DEG 50KT 3460 8842 

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Mar 17, 7:17 PM CDTSevere Thunderstorm WarningMEGChickasaw, Itawamba, Lee, Monroe, Pontotoc43 min
Mar 17, 7:35 PM CDTFlash Flood WarningMEGItawamba2 hr
Mar 17, 7:38 PM CDTTornado WarningMEGItawamba, Lee, Monroe10 min
Mar 17, 8:24 PM CDTAreal Flood AdvisoryMEGChickasaw, Itawamba, Lee, Monroe, Pontotoc89 min
Mar 17, 8:45 PM CDTFlash Flood WarningMEGItawamba, Prentiss, Tishomingo69 min
Mar 17, 9:10 PM CDTRiver Flood WarningMEGLowndes, Monroe4 days

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.