Alert archive / Mississippi / Tornado Warnings in 2021

Tornado Warning 77, NWS New Orleans, LA

December 6, 2021Hancock County, Mississippi; Saint Tammany Parish, Louisiana

NWS New Orleans, LA issued this tornado warning at Dec 6, 2021, 3:20 PM CST for Hancock County, Mississippi; Saint Tammany Parish, Louisiana. It was in force for 30 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, 3:20 PM CST (21:20 UTC)
Expired: Dec 6, 2021, 3:50 PM CST
In force: 30 min
Issued by: NWS New Orleans, LA
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 0.75 in

Counties Saint Tammany Parish, LA, Hancock County, MS

The nearest sounding before it

Slidell Radar S, LA (KSIL), launched 12:00Z, 9.3 hours before the alert went out and 14 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: 720 J/kg
Mixed-layer CIN: -23 J/kg
Mixed-layer LCL: 680 m above ground
0-6 km bulk shear: 36 kt
0-1 km storm-relative helicity: 180 m²/s²
0-3 km storm-relative helicity: 201 m²/s²
Significant tornado parameter: 0.5
Supercell composite: 5.4

Open this sounding in Storm Lab

The text

As transmitted.

050 
WFUS54 KLIX 062120
TORLIX
LAC103-MSC045-062215-
/O.NEW.KLIX.TO.W.0077.211206T2120Z-211206T2215Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service New Orleans LA
320 PM CST Mon Dec 6 2021

The National Weather Service in New Orleans has issued a

* Tornado Warning for...
  East central St. Tammany Parish in southeastern Louisiana...
  Southwestern Hancock County in southern Mississippi...

* Until 415 PM CST.
    
* At 319 PM CST, a severe thunderstorm capable of producing a tornado
  was located near Pearl River, or 7 miles northwest of Slidell,
  moving east 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...
  Slidell and Pearl River around 330 PM CST.
  Stennis Space Center around 340 PM CST.

This includes the following Interstates...
 Interstate 10 in Mississippi between mile markers 1 and 6.
 Interstate 59 in Louisiana between mile markers 2 and 8.

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 3037 8988 3042 8986 3043 8952 3028 8955
TIME...MOT...LOC 2119Z 286DEG 35KT 3039 8983 

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

$$

CAB

2 follow-up statements

933 
WWUS54 KLIX 062142
SVSLIX

Severe Weather Statement
National Weather Service New Orleans LA
342 PM CST Mon Dec 6 2021

LAC103-062152-
/O.CAN.KLIX.TO.W.0077.000000T0000Z-211206T2215Z/
St. Tammany LA-
342 PM CST Mon Dec 6 2021

...THE TORNADO WARNING FOR EAST CENTRAL ST. TAMMANY PARISH IS
CANCELLED...
    
The tornadic thunderstorm which prompted the warning has moved out 
of the warned area. Therefore, the warning has been cancelled.

LAT...LON 3043 8952 3034 8954 3034 8963 3036 8966
      3040 8968 3042 8968 3043 8963
TIME...MOT...LOC 2142Z 261DEG 30KT 3043 8961 

$$

MSC045-062215-
/O.CON.KLIX.TO.W.0077.000000T0000Z-211206T2215Z/
Hancock MS-
342 PM CST Mon Dec 6 2021

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 415 PM CST FOR WEST
CENTRAL HANCOCK COUNTY...
    
At 342 PM CST, a severe thunderstorm capable of producing a tornado
was located near Stennis Space Center, or 7 miles southeast of
Picayune, moving east at 35 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
west central Hancock County.

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 3043 8952 3034 8954 3034 8963 3036 8966
      3040 8968 3042 8968 3043 8963
TIME...MOT...LOC 2142Z 261DEG 30KT 3043 8961 

TORNADO...RADAR INDICATED
MAX HAIL SIZE...0.00 IN

$$

CAB

545 
WWUS54 KLIX 062150 RRA
SVSLIX

Severe Weather Statement
National Weather Service New Orleans LA
350 PM CST Mon Dec 6 2021

MSC045-062200-
/O.CAN.KLIX.TO.W.0077.000000T0000Z-211206T2215Z/
Hancock MS-
350 PM CST Mon Dec 6 2021

...THE TORNADO WARNING FOR WEST CENTRAL HANCOCK COUNTY IS
CANCELLED...
        
The storm which prompted the warning has moved out of the area.
Therefore, the warning has been cancelled.

LAT...LON 3043 8952 3034 8954 3034 8963 3036 8966
      3040 8968 3042 8968 3043 8963
TIME...MOT...LOC 2148Z 286DEG 35KT 3041 8952 

$$

CAB

The office that day

Everything else NWS New Orleans, LA issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Dec 6, 9:52 AM CST	Special Weather Statement	LIX	Wilkinson	53 min
Dec 6, 12:21 PM CST	Severe Thunderstorm Warning	LIX	Amite	54 min
Dec 6, 2:35 PM CST	Tornado Warning	LIX	Pearl River	55 min
Dec 6, 2:56 PM CST	Tornado Warning	LIX	Pearl River	49 min
Dec 6, 3:09 PM CST	Severe Thunderstorm Warning Considerable damage threat	LIX	Hancock, Pearl River	66 min
Dec 6, 3:31 PM CST	Tornado Warning	LIX	Pearl River	7 min
Dec 6, 3:36 PM CST	Tornado Warning	LIX	Hancock	28 min
Dec 6, 4:07 PM CST	Special Weather Statement	LIX	Harrison	23 min
Dec 6, 11:08 AM CST	Special Weather Statement	LIX	East Feliciana	67 min
Dec 6, 12:01 PM CST	Special Weather Statement	LIX	Saint Helena	74 min
Dec 6, 12:46 PM CST	Severe Thunderstorm Warning	LIX	Tangipahoa, Washington	59 min
Dec 6, 1:22 PM CST	Tornado Warning	LIX	Tangipahoa, Washington	68 min
Dec 6, 1:29 PM CST	Severe Thunderstorm Warning	LIX	Saint Helena, Tangipahoa, Washington	61 min
Dec 6, 1:40 PM CST	Special Weather Statement	LIX	Saint Helena	65 min
Dec 6, 1:44 PM CST	Severe Thunderstorm Warning	LIX	Livingston, Saint Helena	61 min
Dec 6, 1:54 PM CST	Severe Thunderstorm Warning	LIX	Saint Helena, Tangipahoa	66 min
Dec 6, 2:21 PM CST	Severe Thunderstorm Warning	LIX	Saint Tammany, Washington	39 min
Dec 6, 2:24 PM CST	Tornado Warning	LIX	Washington	21 min
Dec 6, 2:30 PM CST	Severe Thunderstorm Warning	LIX	Livingston, Saint Tammany, Tangipahoa	60 min
Dec 6, 2:41 PM CST	Special Marine Warning	LIX		64 min
Dec 6, 2:51 PM CST	Flash Flood Warning	LIX	Ascension, East Baton Rouge, West Baton Rouge	116 min
Dec 6, 2:51 PM CST	Tornado Warning	LIX	Saint Tammany	39 min
Dec 6, 3:26 PM CST	Special Marine Warning	LIX		64 min
Dec 6, 4:14 PM CST	Special Marine Warning	LIX		91 min
Dec 6, 5:24 PM CST	Special Marine Warning	LIX		66 min

Nearby

Tornado Warnings in Mississippi, 2021 Tornado Warnings in Louisiana, 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.