Alert archive / Louisiana / Tornado Warnings in 2016

Tornado Warning 52, NWS New Orleans, LA

April 13, 2016Assumption Parish, Lafourche Parish, Saint James Parish, Louisiana

NWS New Orleans, LA issued this tornado warning at Apr 13, 2016, 5:50 AM CDT for Assumption Parish, Lafourche Parish, Saint James Parish, Louisiana. It was in force for 25 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
Apr 13, 2016, 5:50 AM CDT (10:50 UTC)
Expired
Apr 13, 2016, 6:15 AM CDT
In force
25 min
Issued by
NWS New Orleans, LA
Area
Storm-based polygon
Tornado
Radar indicated
Hail
1.75 in

Counties Assumption Parish, LA, Lafourche Parish, LA, Saint James Parish, LA

What was reported inside it

TimeReportWhereRemark
Apr 13, 6:10 AM CDTHAIL 1.75Labadieville, LAPUBLIC PICTURE VIA TWITTER REVEALED GOLFBALL SIZE HAIL.

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

The nearest sounding before it

Slidell Radar S, LA (KSIL), launched 00:00Z, 10.8 hours before the alert went out and 140 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 2016-04-13Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCLEL10008507005003002001001 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 00:00Z on 2016-04-13The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 33 square meters per square second.19395878Sfc1 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
558 m above ground
0-6 km bulk shear
46 kt
0-1 km storm-relative helicity
33 m²/s²
0-3 km storm-relative helicity
194 m²/s²
Significant tornado parameter
-0.0
Supercell composite
-0.3

Open this sounding in Storm Lab

The text

As transmitted.

170 
WFUS54 KLIX 131050
TORLIX
LAC007-057-093-131115-
/O.NEW.KLIX.TO.W.0052.160413T1050Z-160413T1115Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE NEW ORLEANS LA
550 AM CDT WED APR 13 2016

THE NATIONAL WEATHER SERVICE IN NEW ORLEANS HAS ISSUED A

* TORNADO WARNING FOR...
  NORTHWESTERN LAFOURCHE PARISH IN SOUTHEASTERN LOUISIANA...
  CENTRAL ASSUMPTION PARISH IN SOUTHEASTERN LOUISIANA...
  SOUTHWESTERN ST. JAMES PARISH IN SOUTHEASTERN LOUISIANA...

* UNTIL 615 AM CDT
    
* AT 549 AM CDT...A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO
  WAS LOCATED NEAR BAYOU GENEVE...OR NEAR NAPOLEONVILLE...MOVING
  NORTHEAST AT 40 MPH.

  HAZARD...TORNADO AND GOLF BALL SIZE HAIL. 

  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...
  NAPOLEONVILLE...SUPREME AND LABADIEVILLE AROUND 600 AM CDT. 
  CHACKBAY AROUND 615 AM CDT. 

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 2990 9119 3004 9085 2981 9080 2974 9109
      2975 9109 2977 9110 2979 9110 2980 9109
      2984 9113 2984 9116
TIME...MOT...LOC 1049Z 243DEG 33KT 2986 9107 

TORNADO...RADAR INDICATED
HAIL...1.75IN

$$
1 follow-up statement
886 
WWUS54 KLIX 131056
SVSLIX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE NEW ORLEANS LA
556 AM CDT WED APR 13 2016

LAC007-057-093-131115-
/O.CON.KLIX.TO.W.0052.000000T0000Z-160413T1115Z/
LAFOURCHE LA-ASSUMPTION LA-ST. JAMES LA-
556 AM CDT WED APR 13 2016

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 615 AM CDT FOR
NORTHWESTERN LAFOURCHE...CENTRAL ASSUMPTION AND SOUTHWESTERN ST.
JAMES PARISHES...
    
AT 556 AM CDT...A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO
WAS LOCATED OVER SUPREME...OR 7 MILES SOUTH OF NAPOLEONVILLE...MOVING
EAST AT 35 MPH.

HAZARD...TORNADO AND GOLF BALL SIZE HAIL. 

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...
  LABADIEVILLE AROUND 600 AM CDT. 
  THIBODAUX AND CHACKBAY AROUND 615 AM CDT. 

LAT...LON 2990 9119 3004 9085 2981 9080 2974 9109
      2975 9109 2977 9110 2979 9110 2980 9109
      2984 9113 2984 9116
TIME...MOT...LOC 1056Z 253DEG 30KT 2984 9101 

TORNADO...RADAR INDICATED
HAIL...1.75IN

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 13, 5:09 AM CDTSpecial Weather StatementLIXAssumption36 min
Apr 13, 5:37 AM CDTSevere Thunderstorm WarningLIXAssumption23 min
Apr 13, 6:11 AM CDTTornado WarningLIXAssumption, Lafourche, Saint James, Saint John the Baptist, Terrebonne34 min
Apr 13, 6:43 AM CDTSevere Thunderstorm WarningLIXLafourche, Saint Charles, Saint John the Baptist32 min
Apr 13, 7:44 AM CDTSpecial Weather StatementLIXPlaquemines31 min
Apr 13, 7:55 AM CDTSpecial Weather StatementLIXSaint Charles, Saint James, Saint John the Baptist65 min
Apr 13, 8:19 AM CDTAreal Flood AdvisoryLIXJefferson, Orleans, Plaquemines, Saint Bernard, Saint Charles4 hr
Apr 13, 9:46 AM CDTSpecial Marine WarningLIX89 min
Apr 13, 10:22 AM CDTSpecial Marine WarningLIX68 min
Apr 13, 11:10 AM CDTSpecial Marine WarningLIX65 min
Apr 13, 11:39 AM CDTSpecial Marine WarningLIX96 min
Apr 13, 11:47 AM CDTSpecial Marine WarningLIX88 min
Apr 13, 11:48 AM CDTSpecial Marine WarningLIX87 min

Nearby

Tornado Warnings in Louisiana, 2016Every tornado warning in 2016Tornadoes in 2016

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.