Alert archive / Louisiana / Tornado Warnings in 2021

Tornado Warning 7, NWS New Orleans, LA

April 8, 2021Pike County, Mississippi; Tangipahoa Parish, Washington Parish, Louisiana

NWS New Orleans, LA issued this tornado warning at Apr 8, 2021, 1:12 AM CDT for Pike County, Mississippi; Tangipahoa Parish, Washington Parish, Louisiana. It was in force for 33 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
Apr 8, 2021, 1:12 AM CDT (06:12 UTC)
Expired
Apr 8, 2021, 1:45 AM CDT
In force
33 min
Issued by
NWS New Orleans, LA
Area
Storm-based polygon
Tornado
Radar indicated
Hail
0.75 in

Counties Tangipahoa Parish, LA, Washington Parish, LA, Pike County, MS

The nearest sounding before it

Slidell Radar S, LA (KSIL), launched 00:00Z, 6.2 hours before the alert went out and 90 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 00:00Z on 2021-04-08Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1186 joules per kilogram.LCLEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Slidell Radar S, LA at 00:00Z on 2021-04-08The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 147 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
1186 J/kg
Mixed-layer CIN
0 J/kg
Mixed-layer LCL
722 m above ground
0-6 km bulk shear
43 kt
0-1 km storm-relative helicity
147 m²/s²
0-3 km storm-relative helicity
175 m²/s²
Significant tornado parameter
0.9
Supercell composite
5.8

Open this sounding in Storm Lab

The text

As transmitted.

258 
WFUS54 KLIX 080612
TORLIX
LAC105-117-MSC113-080645-
/O.NEW.KLIX.TO.W.0007.210408T0612Z-210408T0645Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service New Orleans LA
112 AM CDT Thu Apr 8 2021

The National Weather Service in New Orleans has issued a

* Tornado Warning for...
  North central Tangipahoa Parish in southeastern Louisiana...
  Washington Parish in southeastern Louisiana...
  Southeastern Pike County in southern Mississippi...

* Until 145 AM CDT.
    
* At 111 AM CDT, a severe thunderstorm capable of producing a tornado
  was located over Mount Herman, or 12 miles northwest of
  Franklinton, 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 dangerous storm will be near...
  Franklinton around 135 AM CDT.

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 3101 9026 3100 9026 3100 9021 3092 8981
      3067 8992 3091 9042 3103 9035
TIME...MOT...LOC 0611Z 291DEG 30KT 3095 9033 

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

$$
2 follow-up statements
930 
WWUS54 KLIX 080624
SVSLIX

Severe Weather Statement
National Weather Service New Orleans LA
124 AM CDT Thu Apr 8 2021

LAC105-MSC113-080633-
/O.CAN.KLIX.TO.W.0007.000000T0000Z-210408T0645Z/
Tangipahoa LA-Pike MS-
124 AM CDT Thu Apr 8 2021

...THE TORNADO WARNING FOR NORTH CENTRAL TANGIPAHOA PARISH IN
SOUTHEASTERN LOUISIANA AND SOUTHEASTERN PIKE COUNTIES IS CANCELLED...
    
The tornadic thunderstorm which prompted the warning has moved 
out of the area. Therefore, the warning has been cancelled.

LAT...LON 3095 8995 3094 8995 3075 9008 3086 9031
      3100 9032 3100 9021
TIME...MOT...LOC 0623Z 291DEG 30KT 3091 9022 

$$

LAC117-080645-
/O.CON.KLIX.TO.W.0007.000000T0000Z-210408T0645Z/
Washington LA-
124 AM CDT Thu Apr 8 2021

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 145 AM CDT FOR
NORTHWESTERN WASHINGTON PARISH...
    
At 123 AM CDT, a severe thunderstorm capable of producing a tornado
was located near Mount Herman, or near Franklinton, 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 dangerous storm will be near...
  Franklinton around 135 AM CDT.

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 3095 8995 3094 8995 3075 9008 3086 9031
      3100 9032 3100 9021
TIME...MOT...LOC 0623Z 291DEG 30KT 3091 9022 

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

$$
827 
WWUS54 KLIX 080638
SVSLIX

Severe Weather Statement
National Weather Service New Orleans LA
138 AM CDT Thu Apr 8 2021

LAC117-080645-
/O.CON.KLIX.TO.W.0007.000000T0000Z-210408T0645Z/
Washington LA-
138 AM CDT Thu Apr 8 2021

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 145 AM CDT FOR CENTRAL
WASHINGTON PARISH...
    
At 137 AM CDT, a severe thunderstorm capable of producing a tornado
was located near Franklinton, 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
central Washington Parish.

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 3095 8995 3094 8995 3075 9008 3080 9019
      3098 9013
TIME...MOT...LOC 0637Z 291DEG 30KT 3087 9009 

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

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 7, 9:42 PM CDTSevere Thunderstorm WarningLIXWilkinson78 min
Apr 7, 10:22 PM CDTTornado WarningLIXWilkinson53 min
Apr 7, 10:50 PM CDTSevere Thunderstorm WarningLIXAmite, Wilkinson70 min
Apr 7, 11:12 PM CDTTornado WarningLIXWilkinson28 min
Apr 8, 12:39 AM CDTSevere Thunderstorm WarningLIXAmite, Pike, Walthall66 min
Apr 8, 2:04 AM CDTSpecial Weather StatementLIXPearl River56 min
Apr 8, 2:56 AM CDTTornado WarningLIXPearl River34 min
Apr 8, 3:13 AM CDTSpecial Weather StatementLIXHancock, Harrison62 min
Apr 8, 3:24 AM CDTTornado WarningLIXHancock36 min
Apr 8, 12:08 AM CDTSevere Thunderstorm WarningLIXEast Feliciana, Saint Helena67 min
Apr 8, 12:25 AM CDTSevere Thunderstorm WarningLIXEast Baton Rouge, East Feliciana, Pointe Coupee, Saint Helena, West Baton Rouge, West Feliciana34 min
Apr 8, 1:05 AM CDTSevere Thunderstorm WarningLIXSaint Tammany, Tangipahoa, Washington55 min
Apr 8, 1:20 AM CDTTornado WarningLIXLivingston, Saint Helena25 min
Apr 8, 1:51 AM CDTSevere Thunderstorm WarningLIXLivingston, Saint John the Baptist, Tangipahoa39 min
Apr 8, 2:00 AM CDTSpecial Marine WarningLIX30 min
Apr 8, 2:14 AM CDTSpecial Marine WarningLIX61 min
Apr 8, 2:24 AM CDTSevere Thunderstorm WarningLIXSaint Tammany51 min
Apr 8, 2:30 AM CDTTornado WarningLIXSaint Tammany30 min
Apr 8, 2:54 AM CDTSpecial Weather StatementLIXOrleans, Saint Charles66 min
Apr 8, 3:03 AM CDTTornado WarningLIXSaint Charles, Saint John the Baptist14 min
Apr 8, 3:28 AM CDTSpecial Marine WarningLIX62 min
Apr 8, 3:42 AM CDTFlash Flood WarningLIXJefferson, Orleans, Saint Charles5 hr
Apr 8, 4:00 AM CDTTornado WarningLIXJefferson12 min
Apr 8, 4:15 AM CDTSpecial Weather StatementLIXJefferson, Lafourche60 min
Apr 8, 4:22 AM CDTTornado WarningLIXJefferson23 min
Apr 8, 4:31 AM CDTSpecial Marine WarningLIX89 min
Apr 8, 5:14 AM CDTSpecial Weather StatementLIXJefferson, Plaquemines, Terrebonne61 min
Apr 8, 5:19 AM CDTSpecial Marine WarningLIX56 min
Apr 8, 5:45 AM CDTSpecial Marine WarningLIX2 hr
Apr 8, 6:11 AM CDTSevere Thunderstorm WarningLIXPlaquemines34 min
Apr 8, 6:15 AM CDTSpecial Marine WarningLIX2 hr
Apr 8, 7:42 AM CDTSpecial Marine WarningLIX63 min
Apr 8, 9:55 AM CDTRiver Flood WarningLIXTangipahoa12 days
Apr 8, 9:58 AM CDTRiver Flood WarningLIXSaint Tammany4 days
Apr 8, 10:10 AM CDTRiver Flood WarningLIXAscension12 days

Nearby

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