Alert archive / Louisiana / Tornado Warnings in 2021

Tornado Warning 44, NWS New Orleans, LA

August 29, 2021Orleans Parish, Saint Bernard Parish, Saint Tammany Parish, Louisiana; Hancock County, Mississippi

NWS New Orleans, LA issued this tornado warning at Aug 29, 2021, 6:25 PM CDT for Orleans Parish, Saint Bernard Parish, Saint Tammany Parish, Louisiana; Hancock County, Mississippi. It was in force for 35 min. 1 report came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued
Aug 29, 2021, 6:25 PM CDT (23:25 UTC)
Expired
Aug 29, 2021, 7:00 PM CDT
In force
35 min
Issued by
NWS New Orleans, LA
Area
Storm-based polygon
Tornado
Radar indicated
Hail
0.0 in

Counties Orleans Parish, LA, Saint Bernard Parish, LA, Saint Tammany Parish, LA, Hancock County, MS

What was reported inside it

TimeReportWhereRemark
Aug 29, 6:33 PM CDTTORNADO2 Se Eden Isle, LAA TORNADO TOUCHED DOWN IN EDEN ISLE JUST EAST OF I-10. THE FIRST SIGN OF VISIBLE DAMAGE WAS TO A VACANT CONDOMINIUM COMPLEX ON LAKE SHORE BLVD EAST. THE ROOF TO TWO OF THE BUILDINGS WERE PARTIALLY TORN WITH CONSTRUCTION DEBRIS AND DOWNED TREES BLOWN TO THE WES

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

IssuedProductOfficeLasted
Aug 29, 6:07 AM CDTTornado WatchSPC13 hr

The nearest sounding before it

Slidell Radar S, LA (KSIL), launched 12:00Z, 11.4 hours before the alert went out and 32 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 2021-08-29Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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 2021-08-29The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -55 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
3256 m above ground
0-6 km bulk shear
37 kt
0-1 km storm-relative helicity
-55 m²/s²
0-3 km storm-relative helicity
85 m²/s²
Significant tornado parameter
0.0
Supercell composite
-0.3

Open this sounding in Storm Lab

The text

As transmitted.

698 
WFUS54 KLIX 292325
TORLIX
LAC071-087-103-MSC045-300000-
/O.NEW.KLIX.TO.W.0044.210829T2325Z-210830T0000Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service New Orleans LA
625 PM CDT Sun Aug 29 2021

The National Weather Service in New Orleans has issued a

* Tornado Warning for...
  Eastern St. Bernard Parish in southeastern Louisiana...
  Northeastern Orleans Parish in southeastern Louisiana...
  Southeastern St. Tammany Parish in southeastern Louisiana...
  Southwestern Hancock County in southern Mississippi...

* Until 700 PM CDT.
    
* At 623 PM CDT, tropical rainbands capable of producing a tornado 
  were located along a line extending from near Lake Catherine to 10 
  miles northeast of Shell Beach, moving north at 70 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.

* These dangerous storms will be near...
  Lake Catherine around 630 PM CDT.
  Slidell around 635 PM CDT.
  Pearl River around 650 PM CDT.
  Pearlington around 655 PM CDT.

Other locations impacted by these tornadic storms include Slidell
Airport.

This includes the following Interstates...
 Interstate 10 in Louisiana between mile markers 257 and 273.
 Interstate 10 in Mississippi between mile markers 1 and 3.
 Interstate 12 between mile markers 71 and 84.
 Interstate 59 in Louisiana between mile markers 1 and 11.

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.

Heavy rainfall may hide this tornado. Do not wait to see or hear the
tornado. TAKE COVER NOW!

&&

LAT...LON 2978 8931 2975 8942 2980 8947 2974 8943
      2972 8948 2973 8950 3037 9000 3048 8978
      3045 8965 3019 8952 3016 8965 3010 8968
      3006 8973 3004 8973 2999 8958 3007 8947
      2981 8936 2981 8939
TIME...MOT...LOC 2323Z 160DEG 60KT 3009 8966 3000 8959 2982 8943 

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

$$

JRK
3 follow-up statements
535 
WWUS54 KLIX 292337
SVSLIX

Severe Weather Statement
National Weather Service New Orleans LA
637 PM CDT Sun Aug 29 2021

LAC071-087-103-MSC045-300000-
/O.CON.KLIX.TO.W.0044.000000T0000Z-210830T0000Z/
St. Bernard LA-Orleans LA-St. Tammany LA-Hancock MS-
637 PM CDT Sun Aug 29 2021

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 700 PM CDT FOR
NORTHEASTERN ST. BERNARD...NORTHEASTERN ORLEANS...SOUTHEASTERN ST.
TAMMANY PARISHES IN SOUTHEASTERN LOUISIANA AND SOUTHWESTERN HANCOCK
COUNTIES...
    
At 637 PM CDT, severe thunderstorms capable of producing tornadoes
were located along a line extending from near Lake Catherine to 14
miles northeast of Shell Beach, moving northwest at 60 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.

Locations impacted include...
New Orleans, Slidell, Pearl River, Lake Catherine, Pearlington,
Lacombe and Slidell Airport.

This includes the following Interstates...
 Interstate 10 in Louisiana between mile markers 260 and 273.
 Interstate 10 in Mississippi between mile markers 1 and 2.
 Interstate 12 between mile markers 71 and 84.
 Interstate 59 in Louisiana between mile markers 1 and 6.

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 or in
a vehicle, move to the closest substantial shelter and protect
yourself from flying debris.

Heavy rainfall may hide this tornado. Do not wait to see or hear the
tornado. TAKE COVER NOW!

&&

LAT...LON 3009 8978 3011 8979 3017 8975 3015 8972
      3018 8968 3018 8975 3025 8991 3037 9000
      3038 8999 3046 8982 3034 8964 3019 8952
      3016 8966 3011 8968 3000 8956 3006 8947
      2999 8943 2996 8945 2997 8943 2979 8935
TIME...MOT...LOC 2337Z 149DEG 50KT 3019 8975 3001 8950 

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

$$

JRK
850 
WWUS54 KLIX 292349
SVSLIX

Severe Weather Statement
National Weather Service New Orleans LA
649 PM CDT Sun Aug 29 2021

LAC071-087-292359-
/O.CAN.KLIX.TO.W.0044.000000T0000Z-210830T0000Z/
St. Bernard LA-Orleans LA-
649 PM CDT Sun Aug 29 2021

...THE TORNADO WARNING FOR NORTHEASTERN ST. BERNARD AND NORTHEASTERN
ORLEANS PARISHES 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 600 AM CDT for southeastern
Louisiana...and southern Mississippi.

LAT...LON 3045 8981 3034 8964 3021 8954 3016 8964
      3018 8969 3019 8970 3039 8995 3045 8984
      3046 8982
TIME...MOT...LOC 2349Z 150DEG 55KT 3026 8967 

$$

LAC103-MSC045-300000-
/O.CON.KLIX.TO.W.0044.000000T0000Z-210830T0000Z/
St. Tammany LA-Hancock MS-
649 PM CDT Sun Aug 29 2021

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 700 PM CDT FOR
SOUTHEASTERN ST. TAMMANY PARISH IN SOUTHEASTERN LOUISIANA AND
SOUTHWESTERN HANCOCK COUNTIES...
    
At 649 PM CDT, a severe thunderstorm capable of producing a tornado
was located near Pearlington, or 7 miles east of Slidell, moving
northwest at 65 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.

Locations impacted include...
Slidell, Pearl River, Pearlington and Slidell Airport. 

This includes the following Interstates...
 Interstate 10 in Louisiana between mile markers 264 and 273.
 Interstate 10 in Mississippi between mile markers 1 and 2.
 Interstate 12 between mile markers 78 and 84.
 Interstate 59 in Louisiana between mile markers 1 and 6.

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 or in
a vehicle, move to the closest substantial shelter and protect
yourself from flying debris.

Heavy rainfall may hide this tornado. Do not wait to see or hear the
tornado. TAKE COVER NOW!

&&

LAT...LON 3045 8981 3034 8964 3021 8954 3016 8964
      3018 8969 3019 8970 3039 8995 3045 8984
      3046 8982
TIME...MOT...LOC 2349Z 150DEG 55KT 3026 8967 

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

$$

JRK
090 
WWUS54 KLIX 300001
SVSLIX

Severe Weather Statement
National Weather Service New Orleans LA
701 PM CDT Sun Aug 29 2021

LAC103-MSC045-300010-
/O.EXP.KLIX.TO.W.0044.000000T0000Z-210830T0000Z/
St. Tammany LA-Hancock MS-
701 PM CDT Sun Aug 29 2021

...THE TORNADO WARNING FOR SOUTHEASTERN ST. TAMMANY PARISH IN
SOUTHEASTERN LOUISIANA AND SOUTHWESTERN HANCOCK COUNTIES HAS
EXPIRED...
    
The Tornado Warning that was previously in effect has been reissued 
for St Tammany Parish and Hancock and Pearl River Counties. The 
warning is in effect until 745 PM. Please refer to that bulletin for 
the latest severe weather information.

A Tornado Watch remains in effect until 600 AM CDT for southeastern
Louisiana...and southern Mississippi.

LAT...LON 3045 8981 3034 8964 3021 8954 3016 8964
      3018 8969 3019 8970 3039 8995 3045 8984
      3046 8982
TIME...MOT...LOC 0000Z 160DEG 60KT 3042 8974 

$$

JRK

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 29, 6:23 AM CDTSpecial Marine WarningLIX22 min
Aug 29, 7:49 AM CDTExtreme Wind WarningLIXJefferson, Lafourche, Plaquemines, Saint Bernard, Saint Charles, Terrebonne3 hr
Aug 29, 10:30 AM CDTExtreme Wind WarningLIXJefferson, Lafourche, Plaquemines, Saint Bernard, Saint Charles, Terrebonne3 hr
Aug 29, 1:26 PM CDTExtreme Wind WarningLIXAssumption, Jefferson, Lafourche, Plaquemines, Saint Charles, Saint James and 2 more3 hr
Aug 29, 2:42 PM CDTSpecial Marine WarningLIX18 min
Aug 29, 3:39 PM CDTFlash Flood WarningLIXLafourche, Terrebonne7 hr
Aug 29, 4:08 PM CDTFlash Flood Warning EmergencyLIXJefferson, Orleans, Plaquemines, Saint Bernard, Saint Charles, Saint John the Baptist8 hr
Aug 29, 4:23 PM CDTExtreme Wind WarningLIXJefferson, Lafourche, Saint Charles, Saint James, Saint John the Baptist, Terrebonne2 hr
Aug 29, 5:01 PM CDTFlash Flood Warning EmergencyCatastrophic damage threatLIXPlaquemines6 hr
Aug 29, 5:04 PM CDTSpecial Marine WarningLIX26 min
Aug 29, 6:04 PM CDTSpecial Marine WarningLIX26 min
Aug 29, 6:09 PM CDTFlash Flood WarningLIXSaint Tammany8 hr
Aug 29, 6:21 PM CDTFlash Flood WarningLIXSaint Tammany16 hr
Aug 29, 6:33 PM CDTSpecial Marine WarningLIX57 min
Aug 29, 6:54 PM CDTTornado WarningLIXSaint Tammany36 min
Aug 29, 6:21 AM CDTTornado WarningLIXHancock, Harrison24 min
Aug 29, 8:10 AM CDTTornado WarningLIXJackson24 min
Aug 29, 2:15 PM CDTTornado WarningLIXHancock, Harrison, Pearl River15 min
Aug 29, 3:07 PM CDTTornado WarningLIXHancock23 min
Aug 29, 5:12 PM CDTTornado WarningLIXHarrison33 min
Aug 29, 5:20 PM CDTFlash Flood WarningLIXHarrison5 hr

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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive.