Alert archive / Louisiana / Tornado Warnings in 2015

Tornado Warning 39, NWS New Orleans, LA

October 31, 2015Saint Tammany Parish, Washington Parish, Louisiana

NWS New Orleans, LA issued this tornado warning at Oct 31, 2015, 1:35 PM CDT for Saint Tammany Parish, Washington Parish, Louisiana. It was in force for 40 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, 1:35 PM CDT (18:35 UTC)
Expired: Oct 31, 2015, 2:15 PM CDT
In force: 40 min
Issued by: NWS New Orleans, LA
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 0.75 in

Counties Saint Tammany Parish, LA, Washington 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, 6.6 hours before the alert went out and 56 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.

318 
WFUS54 KLIX 311835
TORLIX
LAC103-117-311915-
/O.NEW.KLIX.TO.W.0039.151031T1835Z-151031T1915Z/

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

THE NATIONAL WEATHER SERVICE IN NEW ORLEANS HAS ISSUED A

* TORNADO WARNING FOR...
  SOUTHEASTERN WASHINGTON PARISH IN SOUTHEASTERN LOUISIANA...
  NORTHWESTERN ST. TAMMANY PARISH IN SOUTHEASTERN LOUISIANA...

* UNTIL 215 PM CDT
    
* AT 135 PM CDT...A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A
  TORNADO WAS LOCATED NEAR FOLSOM...OR 10 MILES NORTH OF COVINGTON...
  MOVING NORTHEAST 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...
  ENON AROUND 145 PM CDT.
  BOGALUSA AROUND 205 PM 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 3072 8983 3057 9009 3061 9016 3085 9002
TIME...MOT...LOC 1835Z 216DEG 30KT 3063 9009 

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

$$

CAB

2 follow-up statements

063 
WWUS54 KLIX 311846
SVSLIX

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

LAC103-311856-
/O.CAN.KLIX.TO.W.0039.000000T0000Z-151031T1915Z/
ST. TAMMANY LA-
146 PM CDT SAT OCT 31 2015

...THE TORNADO WARNING FOR NORTHWESTERN ST. TAMMANY PARISH 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 AND SOUTHERN MISSISSIPPI.

LAT...LON 3072 8983 3067 8999 3068 9007 3085 9002
TIME...MOT...LOC 1846Z 216DEG 29KT 3071 9002 

$$

LAC117-311915-
/O.CON.KLIX.TO.W.0039.000000T0000Z-151031T1915Z/
WASHINGTON LA-
146 PM CDT SAT OCT 31 2015

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 215 PM CDT FOR
SOUTHEASTERN WASHINGTON PARISH...
    
AT 146 PM CDT...A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO
WAS LOCATED NEAR ENON...OR 10 MILES SOUTHWEST OF BOGALUSA...MOVING
NORTHEAST 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...
  BOGALUSA AROUND 205 PM 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 3072 8983 3067 8999 3068 9007 3085 9002
TIME...MOT...LOC 1846Z 216DEG 29KT 3071 9002 

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

$$

CAB

619 
WWUS54 KLIX 311911
SVSLIX

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

LAC117-311921-
/O.EXP.KLIX.TO.W.0039.000000T0000Z-151031T1915Z/
WASHINGTON LA-
211 PM CDT SAT OCT 31 2015

...THE TORNADO WARNING FOR SOUTHEASTERN WASHINGTON PARISH WILL EXPIRE
AT 215 PM CDT...
        
THE STORM WHICH PROMPTED THE WARNING HAS WEAKENED BELOW SEVERE LIMITS
AND EXITED THE WARNED AREA. THEREFORE THE WARNING WILL BE ALLOWED TO
EXPIRE.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 700 PM CDT FOR SOUTHEASTERN
LOUISIANA AND SOUTHERN MISSISSIPPI.

LAT...LON 3072 8983 3067 8999 3068 9007 3085 9002
TIME...MOT...LOC 1910Z 216DEG 30KT 3071 9002 

$$

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, 1:38 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, 2:03 PM CDT	Tornado Warning	LIX	East Baton Rouge, Livingston, Saint Helena	27 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.