Alert archive / Mississippi / Tornado Warnings in 2021

Tornado Warning 62, NWS Jackson, MS

December 29, 2021Clay County, Webster County, Mississippi

NWS Jackson, MS issued this tornado warning at Dec 29, 2021, 4:55 PM CST for Clay County, Webster County, Mississippi. It was in force for 42 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, 4:55 PM CST (22:55 UTC)
Expired: Dec 29, 2021, 5:37 PM CST
In force: 42 min
Issued by: NWS Jackson, MS
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 0.75 in

Counties Clay County, MS, Webster County, MS

The radar

The Columbus AFB radar (KGWX), 81 km from the middle of the area, began a volume at 22:57 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.

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, 10.9 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.

734 
WFUS54 KJAN 292255
TORJAN
MSC025-155-300000-
/O.NEW.KJAN.TO.W.0062.211229T2255Z-211230T0000Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Jackson MS
455 PM CST Wed Dec 29 2021

The National Weather Service in Jackson has issued a

* Tornado Warning for...
  Northern Webster County in north central Mississippi...
  Northwestern Clay County in northeastern Mississippi...

* Until 600 PM CST.
    
* At 454 PM CST, a severe thunderstorm capable of producing a tornado
  was located over Embry, or 22 miles northeast of Winona, moving
  northeast at 40 mph.

  HAZARD...Tornado.

  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.

* This dangerous storm will be near...
  Bellefontaine around 500 PM CST.

Other locations impacted by this tornadic thunderstorm include Mantee
and Walthall.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! Move to a basement 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.

&&

LAT...LON 3355 8942 3371 8951 3372 8949 3372 8919
      3374 8919 3374 8904 3375 8903 3376 8893
      3381 8893 3381 8878
TIME...MOT...LOC 2254Z 238DEG 34KT 3365 8939 

TORNADO...RADAR INDICATED
MAX HAIL SIZE...<.75 IN

$$

JNE

2 follow-up statements

128 
WWUS54 KJAN 292324
SVSJAN

Severe Weather Statement
National Weather Service Jackson MS
524 PM CST Wed Dec 29 2021

MSC025-155-300000-
/O.CON.KJAN.TO.W.0062.000000T0000Z-211230T0000Z/
Webster MS-Clay MS-
524 PM CST Wed Dec 29 2021

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 600 PM CST FOR
NORTHEASTERN WEBSTER AND NORTHWESTERN CLAY COUNTIES...
    
At 523 PM CST, a severe thunderstorm capable of producing a tornado
was located near Pyland, or 8 miles southwest of Houston, moving
northeast at 40 mph.

HAZARD...Tornado.

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.

This tornadic thunderstorm will remain over mainly rural areas of
northeastern Webster and northwestern Clay Counties, including the
following locations... Mantee and Walthall.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! Move to a basement 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.

&&

LAT...LON 3357 8937 3372 8936 3372 8919 3374 8919
      3374 8904 3375 8903 3376 8893 3381 8893
      3381 8878
TIME...MOT...LOC 2323Z 238DEG 34KT 3380 8910 

TORNADO...RADAR INDICATED
MAX HAIL SIZE...<.75 IN

$$

JNE

784 
WWUS54 KJAN 292337
SVSJAN

Severe Weather Statement
National Weather Service Jackson MS
537 PM CST Wed Dec 29 2021

MSC025-155-292347-
/O.CAN.KJAN.TO.W.0062.000000T0000Z-211230T0000Z/
Webster MS-Clay MS-
537 PM CST Wed Dec 29 2021

...THE TORNADO WARNING FOR NORTHEASTERN WEBSTER AND NORTHWESTERN CLAY
COUNTIES IS CANCELLED...
                
The storm which prompted the warning has weakened below severe
limits, and no longer appears capable of producing a tornado.
Therefore, the warning has been cancelled.

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

LAT...LON 3357 8937 3372 8936 3372 8919 3374 8919
      3374 8904 3375 8903 3376 8893 3381 8893
      3381 8878
TIME...MOT...LOC 2336Z 238DEG 34KT 3387 8896 

$$

JNE

The office that day

Everything else NWS Jackson, MS issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Dec 28, 6:29 PM CST	Special Weather Statement	JAN	Warren	31 min
Dec 28, 7:02 PM CST	Special Weather Statement	JAN	Choctaw	28 min
Dec 28, 7:17 PM CST	Special Weather Statement	JAN	Lowndes	28 min
Dec 28, 8:18 PM CST	Special Weather Statement	JAN	Clay	27 min
Dec 28, 8:26 PM CST	Special Weather Statement	JAN	Lincoln	34 min
Dec 28, 9:53 PM CST	Special Weather Statement	JAN	Lowndes	37 min
Dec 28, 10:27 PM CST	Flash Flood Warning	JAN	Clay	3 hr
Dec 28, 10:35 PM CST	Special Weather Statement	JAN	Lowndes	25 min
Dec 29, 12:13 AM CST	Special Weather Statement	JAN	Noxubee	32 min
Dec 29, 2:40 PM CST	Special Weather Statement	JAN	Warren	50 min
Dec 29, 3:39 PM CST	Severe Thunderstorm Warning	JAN	Bolivar, Sunflower	48 min
Dec 29, 3:59 PM CST	Special Weather Statement	JAN	Forrest	46 min
Dec 29, 4:25 PM CST	Severe Thunderstorm Warning	JAN	Grenada, Montgomery, Webster	50 min
Dec 29, 4:36 PM CST	Special Weather Statement	JAN	Carroll	24 min
Dec 29, 5:45 PM CST	Special Weather Statement	JAN	Neshoba	45 min
Dec 29, 5:50 PM CST	Severe Thunderstorm Warning	JAN	Clay, Lowndes	40 min
Dec 29, 5:52 PM CST	Special Weather Statement	JAN	Winston	38 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.