Alert archive / Mississippi / Tornado Warnings in 2021

Tornado Warning 2, NWS New Orleans, LA

February 11, 2021Washington Parish, Louisiana; Pearl River County, Walthall County, Mississippi

NWS New Orleans, LA issued this tornado warning at Feb 11, 2021, 9:10 AM CST for Washington Parish, Louisiana; Pearl River County, Walthall County, Mississippi. It was in force for 28 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
Feb 11, 2021, 9:10 AM CST (15:10 UTC)
Expired
Feb 11, 2021, 9:38 AM CST
In force
28 min
Issued by
NWS New Orleans, LA
Area
Storm-based polygon
Tornado
Radar indicated
Hail
0.75 in

Counties Washington Parish, LA, Pearl River County, MS, Walthall County, MS

The nearest sounding before it

Slidell Radar S, LA (KSIL), launched 12:00Z, 3.2 hours before the alert went out and 84 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-pSkew-T log-p diagram, Slidell Radar S, LA at 12:00Z on 2021-02-11Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1397 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Slidell Radar S, LA at 12:00Z on 2021-02-11The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 140 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
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
1397 J/kg
Mixed-layer CIN
-21 J/kg
Mixed-layer LCL
571 m above ground
0-6 km bulk shear
40 kt
0-1 km storm-relative helicity
140 m²/s²
0-3 km storm-relative helicity
182 m²/s²
Significant tornado parameter
1.0
Supercell composite
7.5

Open this sounding in Storm Lab

The text

As transmitted.

152 
WFUS54 KLIX 111510
TORLIX
LAC117-MSC109-147-111615-
/O.NEW.KLIX.TO.W.0002.210211T1510Z-210211T1615Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service New Orleans LA
910 AM CST Thu Feb 11 2021

The National Weather Service in New Orleans has issued a

* Tornado Warning for...
  Northeastern Washington Parish in southeastern Louisiana...
  Southeastern Walthall County in southern Mississippi...
  Northwestern Pearl River County in southern Mississippi...

* Until 1015 AM CST.
    
* At 909 AM CST, a severe thunderstorm capable of producing a tornado
  was located 8 miles northeast of Franklinton, moving east at 20
  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...
  Varnado around 940 AM CST.

Other locations impacted by this tornadic thunderstorm include Angie.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! Move to 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 3107 8984 3100 8983 3101 8975 3100 8975
      3100 8968 3089 8969 3087 9006 3097 9010
      3108 8992
TIME...MOT...LOC 1509Z 255DEG 19KT 3093 9003 

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

$$

KLG
2 follow-up statements
530 
WWUS54 KLIX 111523
SVSLIX

Severe Weather Statement
National Weather Service New Orleans LA
923 AM CST Thu Feb 11 2021

MSC147-111532-
/O.CAN.KLIX.TO.W.0002.000000T0000Z-210211T1615Z/
Walthall MS-
923 AM CST Thu Feb 11 2021

...THE TORNADO WARNING FOR SOUTHEASTERN WALTHALL COUNTY IS
CANCELLED...
    
The threat associated with the tornadic thunderstorm which prompted 
the warning has moved out of the warned area. Therefore, the warning 
has been cancelled.

LAT...LON 3100 8968 3089 8969 3087 9004 3090 9004
      3100 8994 3100 8983 3101 8976 3101 8975
      3100 8975
TIME...MOT...LOC 1522Z 282DEG 23KT 3091 8995 

$$

LAC117-MSC109-111615-
/O.CON.KLIX.TO.W.0002.000000T0000Z-210211T1615Z/
Washington LA-Pearl River MS-
923 AM CST Thu Feb 11 2021

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 1015 AM CST FOR
NORTHEASTERN WASHINGTON PARISH IN SOUTHEASTERN LOUISIANA AND
NORTHWESTERN PEARL RIVER COUNTIES...
    
At 922 AM CST, a severe thunderstorm capable of producing a tornado
was located near Varnado, or 10 miles northwest of Bogalusa, moving
east at 25 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...
  Varnado around 935 AM CST.

Other locations impacted by this tornadic thunderstorm include Angie.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! Move to 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 3100 8968 3089 8969 3087 9004 3090 9004
      3100 8994 3100 8983 3101 8976 3101 8975
      3100 8975
TIME...MOT...LOC 1522Z 282DEG 23KT 3091 8995 

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

$$

KLG
651 
WWUS54 KLIX 111538
SVSLIX

Severe Weather Statement
National Weather Service New Orleans LA
938 AM CST Thu Feb 11 2021

LAC117-MSC109-111547-
/O.CAN.KLIX.TO.W.0002.000000T0000Z-210211T1615Z/
Washington LA-Pearl River MS-
938 AM CST Thu Feb 11 2021

...THE TORNADO WARNING FOR NORTHEASTERN WASHINGTON PARISH IN
SOUTHEASTERN LOUISIANA AND NORTHWESTERN PEARL RIVER 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.  However heavy rain is
still possible with this thunderstorm.

LAT...LON 3100 8968 3089 8969 3087 9004 3090 9004
      3100 8994 3100 8983 3101 8976 3101 8975
      3100 8975
TIME...MOT...LOC 1536Z 255DEG 19KT 3093 8986 

$$

KLG

The office that day

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

IssuedProductOfficeCountiesLasted
Feb 11, 2:58 AM CSTSpecial Weather StatementLIXWest Baton Rouge47 min
Feb 11, 3:45 AM CSTSpecial Weather StatementLIXWest Feliciana45 min
Feb 11, 4:05 AM CSTSpecial Weather StatementLIXWest Feliciana40 min
Feb 11, 5:11 AM CSTSpecial Weather StatementLIXEast Feliciana34 min
Feb 11, 5:46 AM CSTSpecial Weather StatementLIXEast Feliciana, Saint Helena29 min
Feb 11, 6:41 AM CSTFlash Flood WarningLIXEast Baton Rouge, East Feliciana, Saint Helena3 hr
Feb 11, 7:22 AM CSTSpecial Weather StatementLIXSaint Helena53 min
Feb 11, 8:51 AM CSTSpecial Weather StatementLIXWashington54 min
Feb 11, 9:35 AM CSTAreal Flood AdvisoryLIXAscension, East Baton Rouge, East Feliciana, Iberville, Livingston, Pointe Coupee and 4 more3 hr
Feb 11, 10:20 AM CSTSpecial Weather StatementLIXLivingston, Saint James, Saint John the Baptist55 min
Feb 11, 10:27 AM CSTAreal Flood AdvisoryLIXAscension, Livingston, Saint Helena, Saint James, Saint John the Baptist, Saint Tammany and 2 more3 hr
Feb 11, 11:06 AM CSTAreal Flood AdvisoryLIXSaint Tammany, Tangipahoa, Washington2 hr
Feb 11, 11:15 AM CSTSpecial Weather StatementLIXSaint Tammany60 min
Feb 11, 11:26 AM CSTRiver Flood WarningLIXSaint Tammany19 days
Feb 11, 11:26 AM CSTRiver Flood WarningLIXSaint Tammany, Washington4 days
Feb 11, 11:26 AM CSTRiver Flood WarningLIXSaint Tammany5 days
Feb 11, 11:35 AM CSTAreal Flood AdvisoryLIXAssumption, Jefferson, Lafourche, Saint Charles, Saint James, Saint John the Baptist and 1 more3 hr
Feb 11, 12:04 PM CSTAreal Flood AdvisoryLIXJefferson, Orleans, Plaquemines, Saint Bernard, Saint Charles3 hr
Feb 11, 2:00 PM CSTRiver Flood WarningLIXEast Baton Rouge52 hr
Feb 11, 1:19 AM CSTSpecial Weather StatementLIXAmite41 min
Feb 11, 11:26 AM CSTRiver Flood WarningLIXPike, Walthall32 hr
Feb 11, 11:50 AM CSTSpecial Weather StatementLIXPearl River55 min
Feb 11, 12:25 PM CSTSevere Thunderstorm WarningLIXHarrison35 min
Feb 11, 12:37 PM CSTSpecial Weather StatementLIXHarrison23 min
Feb 11, 1:03 PM CSTSpecial Weather StatementLIXJackson87 min

Nearby

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