Alert archive / Mississippi / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 218, NWS Memphis, TN

December 11, 20214 counties in Mississippi

NWS Memphis, TN issued this severe thunderstorm warning at Dec 11, 2021, 4:58 AM CST for 4 counties in Mississippi. It was in force for 47 min. 2 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
Dec 11, 2021, 4:58 AM CST (10:58 UTC)
Expired
Dec 11, 2021, 5:45 AM CST
In force
47 min
Issued by
NWS Memphis, TN
Area
Storm-based polygon
Hail
1.0 in
Wind
60.0 mph

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

The radar

The Columbus AFB radar (KGWX), 59 km from the middle of the area, began a volume at 10:57 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
Dec 11, 5:00 AM CSTTSTM WND DMG2 E Mantachie, MSLARGE TREE DOWN ON RIVER RD. NEAR MANTACHIE.
Dec 11, 5:15 AM CSTTSTM WND DMGBelmont, MSNUMEROUS TREES DOWN ACROSS BELMONT, RESULTING IN SEVERAL ROAD CLOSURES.

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
Dec 10, 10:44 PM CSTTornado WatchSPC6 hr
Dec 11, 3:41 AM CSTTornado WatchSPC6 hr

The nearest sounding before it

Little Rock, AR (KLZK), launched 00:00Z, 11.0 hours before the alert went out and 152 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 2021-12-11Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1725 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 00:00Z on 2021-12-11The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 398 square meters per square second.1939587897117Sfc1 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
1725 J/kg
Mixed-layer CIN
-13 J/kg
Mixed-layer LCL
759 m above ground
0-6 km bulk shear
78 kt
0-1 km storm-relative helicity
398 m²/s²
0-3 km storm-relative helicity
420 m²/s²
Significant tornado parameter
4.8
Supercell composite
16.2

Open this sounding in Storm Lab

The text

As transmitted.

180 
WUUS54 KMEG 111058
SVRMEG
MSC057-081-117-141-111145-
/O.NEW.KMEG.SV.W.0218.211211T1058Z-211211T1145Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Memphis TN
458 AM CST Sat Dec 11 2021

The National Weather Service in Memphis has issued a

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

* Until 545 AM CST.

* At 458 AM CST, a severe thunderstorm was located over Tupelo,
  moving northeast at 45 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...
  Tupelo, Fulton, Red Bay, Verona, Tombigbee State Park, Tishomingo
  State Park, Saltillo, Belmont, Plantersville, Mantachie,
  Tishomingo, Fairview, Sandy Springs, Marietta, Golden, Paden,
  Thrasher, Dennis, Mooreville and Eggville.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Tornado Watch remains in effect until 1100 AM CST for northeastern
Mississippi.

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

A Tornado Watch remains in effect until 1100 AM CST for northeastern
Mississippi.

&&

LAT...LON 3440 8816 3414 8870 3429 8882 3470 8820
      3462 8813
TIME...MOT...LOC 1058Z 235DEG 38KT 3426 8869 

HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

SWB
2 follow-up statements
698 
WWUS54 KMEG 111123
SVSMEG

Severe Weather Statement
National Weather Service Memphis TN
523 AM CST Sat Dec 11 2021

MSC057-081-117-141-111145-
/O.CON.KMEG.SV.W.0218.000000T0000Z-211211T1145Z/
Itawamba MS-Lee MS-Tishomingo MS-Prentiss MS-
523 AM CST Sat Dec 11 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 545 AM CST
FOR NORTHERN ITAWAMBA...NORTHEASTERN LEE...SOUTHERN TISHOMINGO AND
SOUTHEASTERN PRENTISS COUNTIES...

At 523 AM CST, a severe thunderstorm was located over Sandy Springs,
or 10 miles north of Fulton, moving northeast at 45 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...
Fulton, Red Bay, Tishomingo State Park, Saltillo, Belmont, Mantachie,
Tishomingo, Sandy Springs, Fairview, Marietta, Golden, Paden, Dennis,
Moores Mill, Mooreville, Bloody Springs, Eggville, Ballardsville,
Kirkville and Carter Branch.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Tornado Watch remains in effect until 1100 AM CST for northeastern
Mississippi.

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

&&

LAT...LON 3440 8816 3421 8858 3435 8870 3470 8820
      3462 8813
TIME...MOT...LOC 1123Z 235DEG 38KT 3442 8842 

HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

SWB
277 
WWUS54 KMEG 111135
SVSMEG

Severe Weather Statement
National Weather Service Memphis TN
535 AM CST Sat Dec 11 2021

MSC057-081-117-141-111145-
/O.EXP.KMEG.SV.W.0218.000000T0000Z-211211T1145Z/
Itawamba MS-Lee MS-Tishomingo MS-Prentiss MS-
535 AM CST Sat Dec 11 2021

...THE SEVERE THUNDERSTORM WARNING FOR NORTHERN ITAWAMBA...
NORTHEASTERN LEE...SOUTHERN TISHOMINGO AND SOUTHEASTERN PRENTISS
COUNTIES WILL EXPIRE AT 545 AM CST...
                
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.

A Tornado Watch remains in effect until 1100 AM CST for northeastern
Mississippi.

LAT...LON 3440 8816 3421 8858 3435 8870 3470 8820
      3462 8813
TIME...MOT...LOC 1135Z 235DEG 38KT 3449 8830 

$$

SWB

The office that day

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

IssuedProductOfficeCountiesLasted
Dec 10, 10:46 PM CSTSevere Thunderstorm WarningMEGTunica44 min
Dec 10, 11:25 PM CSTSevere Thunderstorm WarningMEGDeSoto9 min
Dec 10, 11:48 PM CSTSevere Thunderstorm WarningMEGDeSoto, Marshall42 min
Dec 11, 12:46 AM CSTSevere Thunderstorm WarningMEGTunica44 min
Dec 11, 12:48 AM CSTSevere Thunderstorm WarningMEGDeSoto, Tunica42 min
Dec 11, 2:12 AM CSTAreal Flood AdvisoryMEGDeSoto, Tunica3 hr
Dec 11, 2:41 AM CSTSevere Thunderstorm WarningMEGBenton, Marshall49 min
Dec 11, 2:44 AM CSTAreal Flood AdvisoryMEGDeSoto2 hr
Dec 11, 2:51 AM CSTFlash Flood WarningMEGDeSoto2 hr
Dec 11, 2:55 AM CSTSevere Thunderstorm WarningMEGPanola, Tallahatchie, Yalobusha50 min
Dec 11, 3:03 AM CSTSevere Thunderstorm WarningMEGAlcorn, Benton, Tippah42 min
Dec 11, 3:19 AM CSTAreal Flood AdvisoryMEGBenton, Marshall, Tippah3 hr
Dec 11, 3:59 AM CSTSevere Thunderstorm WarningMEGLafayette, Lee, Pontotoc, Union31 min
Dec 11, 4:03 AM CSTFlash Flood WarningMEGCalhoun, Lafayette, Lee, Pontotoc, Prentiss, Tallahatchie and 3 more2 hr
Dec 11, 4:07 AM CSTSpecial Weather StatementMEGAlcorn23 min
Dec 11, 4:21 AM CSTSevere Thunderstorm WarningMEGItawamba, Lee, Prentiss, Tishomingo39 min
Dec 11, 4:25 AM CSTTornado WarningMEGItawamba, Prentiss, Tishomingo35 min
Dec 11, 4:55 AM CSTAreal Flood AdvisoryMEGAlcorn, Prentiss, Tippah, Tishomingo3 hr
Dec 11, 5:12 AM CSTSevere Thunderstorm WarningMEGItawamba, Lee, Prentiss, Tishomingo33 min
Dec 11, 5:56 AM CSTSpecial Weather StatementMEGMonroe79 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.