Alert archive / Mississippi / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 200, NWS Memphis, TN

December 6, 20217 counties in Mississippi

NWS Memphis, TN issued this severe thunderstorm warning at Dec 6, 2021, 5:35 AM CST for 7 counties in Mississippi. It was in force for 40 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 6, 2021, 5:35 AM CST (11:35 UTC)
Expired: Dec 6, 2021, 6:15 AM CST
In force: 40 min
Issued by: NWS Memphis, TN
Area: Storm-based polygon
Tornado: Possible
Hail: 0.75 in
Wind: 60.0 mph

Counties Itawamba County, MS, Lee County, MS, Pontotoc County, MS, Prentiss County, MS, Tippah County, MS, Tishomingo County, MS, Union County, MS

The radar

The Columbus AFB radar (KGWX), 70 km from the middle of the area, began a volume at 11:35 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 nearest sounding before it

Little Rock, AR (KLZK), launched 00:00Z, 11.6 hours before the alert went out and 131 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: 1313 J/kg
Mixed-layer CIN: -4 J/kg
Mixed-layer LCL: 793 m above ground
0-6 km bulk shear: 42 kt
0-1 km storm-relative helicity: 252 m²/s²
0-3 km storm-relative helicity: 326 m²/s²
Significant tornado parameter: 2.2
Supercell composite: 19.4

Open this sounding in Storm Lab

The text

As transmitted.

971 
WUUS54 KMEG 061135
SVRMEG
MSC057-081-115-117-139-141-145-061215-
/O.NEW.KMEG.SV.W.0200.211206T1135Z-211206T1215Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Memphis TN
535 AM CST Mon Dec 6 2021

The National Weather Service in Memphis has issued a

* Severe Thunderstorm Warning for...
  Northern Pontotoc County in northeastern Mississippi...
  Eastern Union County in northeastern Mississippi...
  Northern Itawamba County in northeastern Mississippi...
  Northern Lee County in northeastern Mississippi...
  Southeastern Tippah County in northeastern Mississippi...
  Southern Tishomingo County in northeastern Mississippi...
  Prentiss County in northeastern Mississippi...

* Until 615 AM CST.

* At 535 AM CST, severe thunderstorms were located along a line
  extending from near Jumpertown to near Blair to near Ecru, moving
  east at 70 mph.

  HAZARD...60 mph wind gusts.

  SOURCE...Radar indicated.

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

* Locations impacted include...
  Booneville, New Albany, Baldwyn, Red Bay, Iuka, Tishomingo State
  Park, Saltillo, Guntown, Belmont, Mantachie, Ecru, Tishomingo,
  Thrashers, Fairview, Keownville, Midway, New Harmony, Pratts
  Friendship, Burton and Wheeler.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3433 8817 3432 8922 3449 8898 3465 8883
      3482 8811
TIME...MOT...LOC 1135Z 256DEG 61KT 3466 8874 3451 8878 3435 8909 

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

$$

MJ

1 follow-up statement

031 
WWUS54 KMEG 061157
SVSMEG

Severe Weather Statement
National Weather Service Memphis TN
557 AM CST Mon Dec 6 2021

MSC139-061206-
/O.CAN.KMEG.SV.W.0200.000000T0000Z-211206T1215Z/
Tippah MS-
557 AM CST Mon Dec 6 2021

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN TIPPAH COUNTY IS
CANCELLED...

The storms which prompted the warning have moved out of the warned 
area. Therefore, the warning has been cancelled.

LAT...LON 3432 8906 3466 8863 3479 8811 3433 8817
TIME...MOT...LOC 1156Z 264DEG 56KT 3466 8840 3451 8844 3435 8875 

$$

MSC057-081-115-117-141-145-061215-
/O.CON.KMEG.SV.W.0200.000000T0000Z-211206T1215Z/
Pontotoc MS-Union MS-Itawamba MS-Lee MS-Tishomingo MS-Prentiss MS-
557 AM CST Mon Dec 6 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 615 AM CST
FOR NORTHEASTERN PONTOTOC...SOUTHEASTERN UNION...NORTHERN ITAWAMBA...
NORTHERN LEE...SOUTHERN TISHOMINGO AND PRENTISS COUNTIES...

At 556 AM CST, severe thunderstorms were located along a line
extending from near Burton to 6 miles northwest of Sandy Springs to
near Saltillo, moving east at 65 mph.

HAZARD...60 mph wind gusts.

SOURCE...Radar indicated.

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

Locations impacted include...
Booneville, Baldwyn, Red Bay, Tishomingo State Park, Saltillo,
Guntown, Belmont, Mantachie, Ecru, Tishomingo, Fairview, Midway, New
Harmony, Pratts Friendship, Burton, Wheeler, Sandy Springs, Blair,
Sherman and Marietta.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3432 8906 3466 8863 3479 8811 3433 8817
TIME...MOT...LOC 1156Z 264DEG 56KT 3466 8840 3451 8844 3435 8875 

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

$$

MJ

The office that day

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

Issued	Product	Office	Counties	Lasted
Dec 6, 4:45 AM CST	Special Weather Statement	MEG	Benton, Tippah	30 min
Dec 6, 4:58 AM CST	Special Weather Statement	MEG	Lafayette, Union	32 min
Dec 6, 5:09 AM CST	Severe Thunderstorm Warning	MEG	Lafayette, Marshall, Pontotoc, Union	36 min
Dec 6, 5:11 AM CST	Special Weather Statement	MEG	Alcorn, Tippah	34 min
Dec 6, 5:15 AM CST	Special Weather Statement	MEG	Tallahatchie, Yalobusha	30 min
Dec 6, 5:47 AM CST	Special Weather Statement	MEG	Calhoun, Lee, Pontotoc	43 min
Dec 6, 6:15 AM CST	Special Weather Statement	MEG	Itawamba, Lee	30 min
Dec 6, 6:32 AM CST	Special Weather Statement	MEG	Calhoun, Chickasaw	28 min
Dec 6, 7:04 AM CST	Areal Flood Advisory	MEG	Calhoun, Chickasaw, Yalobusha	3 hr

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.