Alert archive / Louisiana / Tornado Warnings in 2015

Tornado Warning 41, NWS New Orleans, LA

October 31, 2015East Baton Rouge Parish, Livingston Parish, Saint Helena Parish, Louisiana

NWS New Orleans, LA issued this tornado warning at Oct 31, 2015, 2:03 PM CDT for East Baton Rouge Parish, Livingston Parish, Saint Helena Parish, Louisiana. It was in force for 27 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: Oct 31, 2015, 2:03 PM CDT (19:03 UTC)
Expired: Oct 31, 2015, 2:30 PM CDT
In force: 27 min
Issued by: NWS New Orleans, LA
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 0.0 in

Counties East Baton Rouge Parish, LA, Livingston Parish, LA, Saint Helena Parish, LA

The watch it was issued in

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

Issued	Product	Office	Lasted
Oct 31, 11:45 AM CDT	Tornado Watch	SPC	8 hr

The nearest sounding before it

Slidell Radar S, LA (KSIL), launched 12:00Z, 7.1 hours before the alert went out and 121 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: 1 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 847 m above ground
0-6 km bulk shear: 51 kt
0-1 km storm-relative helicity: 292 m²/s²
0-3 km storm-relative helicity: 361 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

084 
WFUS54 KLIX 311903
TORLIX
LAC033-063-091-311930-
/O.NEW.KLIX.TO.W.0041.151031T1903Z-151031T1930Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE NEW ORLEANS LA
203 PM CDT SAT OCT 31 2015

THE NATIONAL WEATHER SERVICE IN NEW ORLEANS HAS ISSUED A

* TORNADO WARNING FOR...
  NORTHWESTERN LIVINGSTON PARISH IN SOUTHEASTERN LOUISIANA...
  SOUTHWESTERN ST. HELENA PARISH IN SOUTHEASTERN LOUISIANA...
  NORTHEASTERN EAST BATON ROUGE PARISH IN SOUTHEASTERN LOUISIANA...

* UNTIL 230 PM CDT
    
* AT 203 PM CDT...A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A
  TORNADO WAS LOCATED NEAR WATSON...OR 12 MILES NORTH OF DENHAM
  SPRINGS...MOVING NORTHEAST 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 TORNADIC THUNDERSTORM WILL REMAIN OVER MAINLY RURAL AREAS OF
  NORTHWESTERN LIVINGSTON...SOUTHWESTERN ST. HELENA AND NORTHEASTERN
  EAST BATON ROUGE PARISHES.

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 3087 9072 3065 9068 3060 9094 3071 9092
      3072 9091 3072 9084 3073 9084 3076 9085
      3077 9084
TIME...MOT...LOC 1903Z 230DEG 34KT 3064 9089 

TORNADO...RADAR INDICATED
HAIL...0.00IN

$$

CAB

1 follow-up statement

343 
WWUS54 KLIX 311914
SVSLIX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE NEW ORLEANS LA
214 PM CDT SAT OCT 31 2015

LAC033-063-311924-
/O.CAN.KLIX.TO.W.0041.000000T0000Z-151031T1930Z/
LIVINGSTON LA-EAST BATON ROUGE LA-
214 PM CDT SAT OCT 31 2015

...THE TORNADO WARNING FOR NORTHWESTERN LIVINGSTON AND NORTHEASTERN
EAST BATON ROUGE 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 700 PM CDT FOR SOUTHEASTERN
LOUISIANA.

LAT...LON 3087 9072 3065 9068 3065 9089 3072 9084
      3076 9085 3077 9084
TIME...MOT...LOC 1914Z 240DEG 35KT 3070 9078 

$$

LAC091-311930-
/O.CON.KLIX.TO.W.0041.000000T0000Z-151031T1930Z/
ST. HELENA LA-
214 PM CDT SAT OCT 31 2015

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 230 PM CDT FOR
SOUTHWESTERN ST. HELENA PARISH...
    
AT 214 PM CDT...A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO
WAS LOCATED 7 MILES WEST OF MONTPELIER...OR 11 MILES SOUTHWEST OF
GREENSBURG...MOVING NORTHEAST 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 TORNADIC THUNDERSTORM WILL REMAIN OVER MAINLY RURAL AREAS OF
SOUTHWESTERN ST. HELENA PARISH.

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 3087 9072 3065 9068 3065 9089 3072 9084
      3076 9085 3077 9084
TIME...MOT...LOC 1914Z 240DEG 35KT 3070 9078 

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

$$

CAB

The office that day

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

Issued	Product	Office	Counties	Lasted
Oct 31, 4:02 AM CDT	Small Craft Advisory	LIX		15 hr
Oct 31, 11:46 AM CDT	River Flood Warning	LIX	Saint Tammany	54 hr
Oct 31, 12:13 PM CDT	Special Weather Statement	LIX	Ascension	47 min
Oct 31, 12:28 PM CDT	Tornado Warning	LIX	Ascension, Livingston	32 min
Oct 31, 12:39 PM CDT	Tornado Warning	LIX	Pointe Coupee	36 min
Oct 31, 1:17 PM CDT	Special Weather Statement	LIX	Livingston	43 min
Oct 31, 1:21 PM CDT	Tornado Warning	LIX	Livingston	24 min
Oct 31, 1:33 PM CDT	Tornado Warning	LIX	Tangipahoa	42 min
Oct 31, 1:35 PM CDT	Tornado Warning	LIX	Saint Tammany, Washington	40 min
Oct 31, 1:38 PM CDT	Special Weather Statement	LIX	East Baton Rouge	22 min
Oct 31, 1:43 PM CDT	Severe Thunderstorm Warning	LIX	East Feliciana	32 min
Oct 31, 1:55 PM CDT	Tornado Warning Tornado observed	LIX	Tangipahoa	35 min
Oct 31, 2:22 PM CDT	Tornado Warning	LIX	Saint Helena	23 min
Oct 31, 2:45 PM CDT	Severe Thunderstorm Warning	LIX	Tangipahoa, Washington	60 min
Oct 31, 3:05 PM CDT	Tornado Warning	LIX	Tangipahoa	25 min
Oct 31, 3:23 PM CDT	Severe Thunderstorm Warning	LIX	Washington	37 min
Oct 31, 3:29 PM CDT	Tornado Warning	LIX	Saint Tammany, Washington	31 min
Oct 31, 4:02 PM CDT	Areal Flood Warning	LIX	East Baton Rouge, East Feliciana, Iberville, Livingston, Saint Helena, West Baton Rouge	3 hr
Oct 31, 4:17 PM CDT	Special Marine Warning	LIX		58 min
Oct 31, 5:28 PM CDT	Special Marine Warning	LIX		47 min

Nearby

Tornado Warnings in Louisiana, 2015 Every tornado warning in 2015 Tornadoes in 2015

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.