Alert archive / Mississippi / Tornado Warnings in 2021

Tornado Warning 84, NWS Memphis, TN

December 29, 2021Calhoun County, Chickasaw County, Mississippi

NWS Memphis, TN issued this tornado warning at Dec 29, 2021, 5:06 PM CST for Calhoun County, Chickasaw County, Mississippi. It was in force for 39 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 29, 2021, 5:06 PM CST (23:06 UTC)
Expired: Dec 29, 2021, 5:45 PM CST
In force: 39 min
Issued by: NWS Memphis, TN
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 1.0 in

Counties Calhoun County, MS, Chickasaw County, MS

The radar

The Columbus AFB radar (KGWX), 69 km from the middle of the area, began a volume at 23:05 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 29, 12:05 PM CST	Tornado Watch	SPC	7 hr

The nearest sounding before it

Little Rock, AR (KLZK), launched 12:00Z, 11.1 hours before the alert went out and 143 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 1900 m above ground
0-6 km bulk shear: 68 kt
0-1 km storm-relative helicity: 131 m²/s²
0-3 km storm-relative helicity: 106 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

892 
WFUS54 KMEG 292306
TORMEG
MSC013-017-292345-
/O.NEW.KMEG.TO.W.0084.211229T2306Z-211229T2345Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Memphis TN
506 PM CST Wed Dec 29 2021

The National Weather Service in Memphis has issued a

* Tornado Warning for...
  Southern Chickasaw County in northeastern Mississippi...
  Southeastern Calhoun County in northeastern Mississippi...

* Until 545 PM CST.
    
* At 506 PM CST, a severe thunderstorm producing a tornado was
  located near Bellefontaine, or 17 miles west of Montpelier, moving
  east at 40 mph.

  HAZARD...Tornado and quarter size hail.

  SOURCE...Radar indicated rotation.

  IMPACT...Flying debris will be dangerous to those caught without 
           shelter. Mobile homes will be damaged or destroyed. 
           Damage to roofs, windows, and vehicles will occur.  Tree 
           damage is likely.

* Locations impacted include...
  Trebloc, Woodland, Sparta, McCondy, Anchor, Atlanta, Egypt and
  Buena Vista.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! Move to a storm shelter or an interior room on the
lowest floor of a sturdy building. Avoid windows. If you are
outdoors, in a mobile home, or in a vehicle, move to the closest
substantial shelter and protect yourself from flying debris.

Tornadoes are extremely difficult to see and confirm at night. Do not
wait to see or hear the tornado. TAKE COVER NOW!

&&

LAT...LON 3375 8930 3397 8872 3381 8872 3381 8893
      3375 8893 3375 8903 3374 8904 3374 8919
      3372 8919 3372 8929
TIME...MOT...LOC 2306Z 251DEG 34KT 3368 8925 

TORNADO...RADAR INDICATED
MAX HAIL SIZE...1.00 IN

$$

SMW

2 follow-up statements

184 
WWUS54 KMEG 292327
SVSMEG

Severe Weather Statement
National Weather Service Memphis TN
527 PM CST Wed Dec 29 2021

MSC013-292337-
/O.CAN.KMEG.TO.W.0084.000000T0000Z-211229T2345Z/
Calhoun MS-
527 PM CST Wed Dec 29 2021

...THE TORNADO WARNING FOR SOUTHEASTERN CALHOUN COUNTY IS
CANCELLED...
    
The tornadic 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 700 PM CST for northeastern
Mississippi.

LAT...LON 3381 8906 3391 8872 3381 8872 3381 8893
      3375 8893 3375 8903 3374 8904 3374 8908
TIME...MOT...LOC 2327Z 251DEG 34KT 3374 8902 

$$

MSC017-292345-
/O.CON.KMEG.TO.W.0084.000000T0000Z-211229T2345Z/
Chickasaw MS-
527 PM CST Wed Dec 29 2021

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 545 PM CST FOR
SOUTHEASTERN CHICKASAW COUNTY...
    
At 527 PM CST, a severe thunderstorm producing a tornado was located
near Montpelier, moving east at 40 mph.

HAZARD...Tornado, quarter size hail, and 60 mph wind gusts.

SOURCE...Radar indicated rotation.

IMPACT...Flying debris will be dangerous to those caught without 
         shelter. Mobile homes will be damaged or destroyed. Damage 
         to roofs, windows, and vehicles will occur.  Tree damage is 
         likely.

Locations impacted include...
Trebloc, Woodland, Sparta, McCondy, Egypt and Anchor. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! Move to a storm shelter or an interior room on the
lowest floor of a sturdy building. Avoid windows. If you are
outdoors, in a mobile home, or in a vehicle, move to the closest
substantial shelter and protect yourself from flying debris.

Tornadoes are extremely difficult to see and confirm at night. Do not
wait to see or hear the tornado. TAKE COVER NOW!

&&

LAT...LON 3381 8906 3391 8872 3381 8872 3381 8893
      3375 8893 3375 8903 3374 8904 3374 8908
TIME...MOT...LOC 2327Z 251DEG 34KT 3374 8902 

TORNADO...RADAR INDICATED
MAX HAIL SIZE...1.00 IN

$$

SMW

008 
WWUS54 KMEG 292338
SVSMEG

Severe Weather Statement
National Weather Service Memphis TN
538 PM CST Wed Dec 29 2021

MSC017-292348-
/O.EXP.KMEG.TO.W.0084.000000T0000Z-211229T2345Z/
Chickasaw MS-
538 PM CST Wed Dec 29 2021

...THE TORNADO WARNING FOR SOUTHEASTERN CHICKASAW COUNTY WILL EXPIRE
AT 545 PM CST...
    
The tornadic thunderstorm which prompted the warning has moved out 
of the warned area. Therefore, the warning will be allowed to expire.

A Tornado Watch remains in effect until 700 PM CST for northeastern
Mississippi.

LAT...LON 3381 8906 3391 8872 3381 8872 3381 8893
      3375 8893 3375 8903 3374 8904 3374 8908
TIME...MOT...LOC 2338Z 251DEG 34KT 3377 8892 

$$

SMW

The office that day

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

Issued	Product	Office	Counties	Lasted
Dec 28, 9:46 PM CST	Areal Flood Advisory	MEG	Chickasaw, Itawamba, Monroe	3 hr
Dec 28, 10:22 PM CST	Special Weather Statement	MEG	Monroe	38 min
Dec 28, 10:37 PM CST	Flash Flood Warning	MEG	Monroe	3 hr
Dec 29, 9:00 AM CST	Areal Flood Advisory	MEG	Calhoun, Chickasaw, Lee, Pontotoc, Yalobusha	3 hr
Dec 29, 9:17 AM CST	Flash Flood Warning	MEG	Calhoun, Yalobusha	3 hr
Dec 29, 12:14 PM CST	Areal Flood Warning	MEG	Calhoun, Chickasaw, Lee, Pontotoc, Yalobusha	3 hr
Dec 29, 1:59 PM CST	Special Weather Statement	MEG	DeSoto	31 min
Dec 29, 4:36 PM CST	Special Weather Statement	MEG	Calhoun	24 min
Dec 29, 4:53 PM CST	Severe Thunderstorm Warning Considerable damage threat	MEG	Calhoun, Chickasaw, Itawamba, Lee, Monroe, Pontotoc	52 min
Dec 29, 4:58 PM CST	Severe Thunderstorm Warning Considerable damage threat	MEG	Prentiss, Tishomingo	14 min
Dec 29, 5:02 PM CST	Areal Flood Advisory	MEG	Prentiss	2 hr
Dec 29, 5:29 PM CST	Severe Thunderstorm Warning Considerable damage threat	MEG	Chickasaw, Itawamba, Monroe	46 min
Dec 29, 5:42 PM CST	Areal Flood Advisory	MEG	Calhoun, Chickasaw, Itawamba, Lee, Monroe, Pontotoc	3 hr
Dec 29, 5:53 PM CST	Severe Thunderstorm Warning	MEG	Monroe	37 min

Nearby

Tornado Warnings in Mississippi, 2021 Every tornado warning in 2021 Tornadoes 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.