Alert archive / Mississippi / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 213, NWS Memphis, TN

December 11, 2021Benton County, Marshall County, Mississippi

NWS Memphis, TN issued this severe thunderstorm warning at Dec 11, 2021, 2:41 AM CST for Benton County, Marshall County, Mississippi. It was in force for 49 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: Dec 11, 2021, 2:41 AM CST (08:41 UTC)
Expired: Dec 11, 2021, 3:30 AM CST
In force: 49 min
Issued by: NWS Memphis, TN
Area: Storm-based polygon
Tornado: Possible
Hail: 0.75 in
Wind: 60.0 mph

Counties Benton County, MS, Marshall County, MS

The radar

The Memphis radar (KNQA), 86 km from the middle of the area, began a volume at 08:40 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
Dec 10, 6:21 PM CST	Tornado Watch	SPC	10 hr
Dec 10, 10:44 PM CST	Tornado Watch	SPC	6 hr

The nearest sounding before it

Little Rock, AR (KLZK), launched 00:00Z, 8.7 hours before the alert went out and 70 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.

403 
WUUS54 KMEG 110841
SVRMEG
MSC009-093-110930-
/O.NEW.KMEG.SV.W.0213.211211T0841Z-211211T0930Z/

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

The National Weather Service in Memphis has issued a

* Severe Thunderstorm Warning for...
  East central Marshall County in northwestern Mississippi...
  Northern Benton County in northeastern Mississippi...

* Until 330 AM CST.

* At 241 AM CST, a severe thunderstorm was located over Holly
  Springs, moving northeast at 50 mph.

  HAZARD...60 mph wind gusts.

  SOURCE...Radar indicated.

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

* Locations impacted include...
  Holly Springs, Snow Lake Shores, Canaan, Ashland, Brody, Higdon,
  Gilton and New Canaan.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Tornado Watch remains in effect until 500 AM CST for northeastern
and northwestern Mississippi.

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

A Tornado Watch remains in effect until 500 AM CST for northeastern
and northwestern Mississippi.

&&

LAT...LON 3481 8909 3480 8909 3469 8949 3478 8953
      3499 8909 3483 8903 3482 8904
TIME...MOT...LOC 0841Z 238DEG 45KT 3474 8943 

TORNADO...POSSIBLE
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

2 follow-up statements

238 
WWUS54 KMEG 110857
SVSMEG

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

MSC093-110907-
/O.CAN.KMEG.SV.W.0213.000000T0000Z-211211T0930Z/
Marshall MS-
257 AM CST Sat Dec 11 2021

...THE SEVERE THUNDERSTORM WARNING FOR EAST CENTRAL MARSHALL 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 500 AM CST for northeastern
and northwestern Mississippi.

LAT...LON 3481 8907 3481 8909 3480 8909 3477 8929
      3479 8930 3484 8930 3485 8933 3486 8932
      3499 8909 3484 8903 3482 8904
TIME...MOT...LOC 0857Z 238DEG 45KT 3485 8922 

$$

MSC009-110930-
/O.CON.KMEG.SV.W.0213.000000T0000Z-211211T0930Z/
Benton MS-
257 AM CST Sat Dec 11 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 330 AM CST
FOR NORTHERN BENTON COUNTY...

At 257 AM CST, a severe thunderstorm was located over Snow Lake
Shores, or 14 miles east of Holly Springs, moving northeast at 50
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, Ashland, Brody and New Canaan. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Tornado Watch remains in effect until 500 AM CST for northeastern
and northwestern Mississippi.

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

&&

LAT...LON 3481 8907 3481 8909 3480 8909 3477 8929
      3479 8930 3484 8930 3485 8933 3486 8932
      3499 8909 3484 8903 3482 8904
TIME...MOT...LOC 0857Z 238DEG 45KT 3485 8922 

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

$$

914 
WWUS54 KMEG 110921
SVSMEG

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

MSC009-110931-
/O.EXP.KMEG.SV.W.0213.000000T0000Z-211211T0930Z/
Benton MS-
321 AM CST Sat Dec 11 2021

...THE SEVERE THUNDERSTORM WARNING FOR NORTHERN BENTON COUNTY WILL
EXPIRE AT 330 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 500 AM CST for northeastern
and northwestern Mississippi.

LAT...LON 3481 8907 3481 8909 3480 8909 3477 8929
      3479 8930 3484 8930 3485 8933 3486 8932
      3499 8909 3484 8903 3482 8904
TIME...MOT...LOC 0921Z 238DEG 45KT 3500 8893 

$$

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, 2:44 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, 4:21 AM CST	Severe Thunderstorm Warning	MEG	Itawamba, Lee, Prentiss, Tishomingo	39 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.