Alert archive / Mississippi / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 217, NWS Memphis, TN

December 11, 20214 counties in Mississippi

NWS Memphis, TN issued this severe thunderstorm warning at Dec 11, 2021, 4:21 AM CST for 4 counties in Mississippi. It was in force for 39 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, 4:21 AM CST (10:21 UTC)
Expired: Dec 11, 2021, 5:00 AM CST
In force: 39 min
Issued by: NWS Memphis, TN
Area: Storm-based polygon
Tornado: Possible
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), 70 km from the middle of the area, began a volume at 10:23 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

Time	Report	Where	Remark
Dec 11, 4:26 AM CST	TORNADO	5 Ne Marietta, MS	2 MOBILE HOMES DAMAGED AS WELL AS 1 WOOD STRUCTURE NEAR NEW SITE COMMUNITY.
Dec 11, 4:31 AM CST	TORNADO	4 Nne Marietta, MS	TORNADIC DEBRIS SIGNATURE NORTHEAST OF MARIETTA.

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.

Issued	Product	Office	Lasted
Dec 10, 10:44 PM CST	Tornado Watch	SPC	6 hr
Dec 11, 3:41 AM CST	Tornado Watch	SPC	6 hr

The nearest sounding before it

Little Rock, AR (KLZK), launched 00:00Z, 10.4 hours before the alert went out and 151 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: 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.

109 
WUUS54 KMEG 111021
SVRMEG
MSC057-081-117-141-111100-
/O.NEW.KMEG.SV.W.0217.211211T1021Z-211211T1100Z/

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

The National Weather Service in Memphis has issued a

* Severe Thunderstorm Warning for...
  Northwestern Itawamba County in northeastern Mississippi...
  Northeastern Lee County in northeastern Mississippi...
  Southern Tishomingo County in northeastern Mississippi...
  Southern Prentiss County in northeastern Mississippi...

* Until 500 AM CST.

* At 421 AM CST, a severe thunderstorm was located over Pratts
  Friendship, or near Baldwyn, 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...
  Baldwyn, Tishomingo State Park, Belmont, Tishomingo, Sandy Springs,
  Burton, Midway, Pratts Friendship, Marietta, Golden, Paden, Oldham,
  Chapelville, Thrasher, Dennis, Moores Mill, Bloody Springs,
  Kirkville, Carter Branch and Mingo.

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 3447 8815 3436 8859 3453 8868 3479 8811
TIME...MOT...LOC 1021Z 245DEG 31KT 3448 8855 

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

$$

SWB

3 follow-up statements

640 
WWUS54 KMEG 111036
SVSMEG

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

MSC081-111046-
/O.CAN.KMEG.SV.W.0217.000000T0000Z-211211T1100Z/
Lee MS-
436 AM CST Sat Dec 11 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 1100 AM CST for northeastern
Mississippi.

LAT...LON 3447 8815 3441 8849 3458 8857 3479 8811
TIME...MOT...LOC 1036Z 245DEG 31KT 3454 8840 

$$

MSC057-117-141-111100-
/O.CON.KMEG.SV.W.0217.000000T0000Z-211211T1100Z/
Itawamba MS-Tishomingo MS-Prentiss MS-
436 AM CST Sat Dec 11 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 500 AM CST
FOR NORTHWESTERN ITAWAMBA...SOUTHERN TISHOMINGO AND SOUTHEASTERN
PRENTISS COUNTIES...

At 436 AM CST, a severe thunderstorm was located 7 miles north of
Sandy Springs, or 12 miles southeast of Booneville, 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...
Tishomingo State Park, Belmont, Tishomingo, Sandy Springs, Burton,
Midway, Marietta, Golden, Paden, Oldham, Thrasher, Dennis, Moores
Mill, Bloody Springs, Kirkville, Carter Branch, Mingo, Hobo Station,
Petertown and Neil.

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 3447 8815 3441 8849 3458 8857 3479 8811
TIME...MOT...LOC 1036Z 245DEG 31KT 3454 8840 

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

$$

SWB

676 
WWUS54 KMEG 111048
SVSMEG

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

MSC057-111058-
/O.CAN.KMEG.SV.W.0217.000000T0000Z-211211T1100Z/
Itawamba MS-
448 AM CST Sat Dec 11 2021

...THE SEVERE THUNDERSTORM WARNING FOR NORTHWESTERN ITAWAMBA 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 1100 AM CST for northeastern
Mississippi.

LAT...LON 3447 8815 3446 8823 3446 8835 3464 8841
      3479 8811
TIME...MOT...LOC 1048Z 245DEG 31KT 3458 8828 

$$

MSC117-141-111100-
/O.CON.KMEG.SV.W.0217.000000T0000Z-211211T1100Z/
Tishomingo MS-Prentiss MS-
448 AM CST Sat Dec 11 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 500 AM CST
FOR SOUTHERN TISHOMINGO AND SOUTHEASTERN PRENTISS COUNTIES...

At 448 AM CST, a severe thunderstorm was located near Burton, or near
Tishomingo State Park, 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...
Tishomingo State Park, Belmont, Tishomingo, Burton, Golden, Paden,
Oldham, Dennis, Moores Mill, Bloody Springs, Carter Branch, Mingo,
Petertown and Neil.

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 3447 8815 3446 8823 3446 8835 3464 8841
      3479 8811
TIME...MOT...LOC 1048Z 245DEG 31KT 3458 8828 

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

$$

SWB

722 
WWUS54 KMEG 111057
SVSMEG

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

MSC117-141-111107-
/O.EXP.KMEG.SV.W.0217.000000T0000Z-211211T1100Z/
Tishomingo MS-Prentiss MS-
457 AM CST Sat Dec 11 2021

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHERN TISHOMINGO AND
SOUTHEASTERN PRENTISS COUNTIES WILL EXPIRE AT 500 AM CST...
        
The storm which prompted the warning has moved out of the area.
Therefore, the warning will be allowed to expire.

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

LAT...LON 3447 8815 3446 8823 3446 8835 3464 8841
      3479 8811
TIME...MOT...LOC 1057Z 245DEG 31KT 3461 8821 

$$

SWB

The office that day

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

Issued	Product	Office	Counties	Lasted
Dec 10, 10:46 PM CST	Severe Thunderstorm Warning	MEG	Tunica	44 min
Dec 10, 11:25 PM CST	Severe Thunderstorm Warning	MEG	DeSoto	9 min
Dec 10, 11:48 PM CST	Severe Thunderstorm Warning	MEG	DeSoto, Marshall	42 min
Dec 11, 12:46 AM CST	Severe Thunderstorm Warning	MEG	Tunica	44 min
Dec 11, 12:48 AM CST	Severe Thunderstorm Warning	MEG	DeSoto, Tunica	42 min
Dec 11, 2:12 AM CST	Areal Flood Advisory	MEG	DeSoto, Tunica	3 hr
Dec 11, 2:41 AM CST	Severe Thunderstorm Warning	MEG	Benton, Marshall	49 min
Dec 11, 2:44 AM CST	Areal Flood Advisory	MEG	DeSoto	2 hr
Dec 11, 2:51 AM CST	Flash Flood Warning	MEG	DeSoto	2 hr
Dec 11, 2:55 AM CST	Severe Thunderstorm Warning	MEG	Panola, Tallahatchie, Yalobusha	50 min
Dec 11, 3:03 AM CST	Severe Thunderstorm Warning	MEG	Alcorn, Benton, Tippah	42 min
Dec 11, 3:19 AM CST	Areal Flood Advisory	MEG	Benton, Marshall, Tippah	3 hr
Dec 11, 3:59 AM CST	Severe Thunderstorm Warning	MEG	Lafayette, Lee, Pontotoc, Union	31 min
Dec 11, 4:03 AM CST	Flash Flood Warning	MEG	Calhoun, Lafayette, Lee, Pontotoc, Prentiss, Tallahatchie and 3 more	2 hr
Dec 11, 4:07 AM CST	Special Weather Statement	MEG	Alcorn	23 min
Dec 11, 4:25 AM CST	Tornado Warning	MEG	Itawamba, Prentiss, Tishomingo	35 min
Dec 11, 4:55 AM CST	Areal Flood Advisory	MEG	Alcorn, Prentiss, Tippah, Tishomingo	3 hr
Dec 11, 4:58 AM CST	Severe Thunderstorm Warning	MEG	Itawamba, Lee, Prentiss, Tishomingo	47 min
Dec 11, 5:12 AM CST	Severe Thunderstorm Warning	MEG	Itawamba, Lee, Prentiss, Tishomingo	33 min
Dec 11, 5:56 AM CST	Special Weather Statement	MEG	Monroe	79 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.