Alert archive / Louisiana / Tornado Warnings in 2003

Tornado Warning 15, NWS New Orleans, LA

April 24, 2003Washington Parish, Louisiana

NWS New Orleans, LA issued this tornado warning at Apr 24, 2003, 3:47 PM CDT for Washington Parish, Louisiana. It was in force for 28 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 24, 2003, 3:47 PM CDT (20:47 UTC)
Expired: Apr 24, 2003, 4:15 PM CDT
In force: 28 min
Issued by: NWS New Orleans, LA
Area: Counties, with a storm outline in the text

County Washington Parish, LA

The nearest sounding before it

Slidell Radar S, LA (KSIL), launched 12:00Z, 8.8 hours before the alert went out and 73 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: 479 J/kg
Mixed-layer CIN: -166 J/kg
Mixed-layer LCL: 990 m above ground
0-6 km bulk shear: 38 kt
0-1 km storm-relative helicity: 233 m²/s²
0-3 km storm-relative helicity: 329 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.0

Open this sounding in Storm Lab

The text

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

925 
WFUS54 KLIX 242047 CCA
TORNEW
LAC117-242115-

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING...CORRECTION
NATIONAL WEATHER SERVICE NEW ORLEANS LA
345 PM CDT THU APR 24 2003

THE NATIONAL WEATHER SERVICE IN NEW ORLEANS HAS ISSUED A

* TORNADO WARNING FOR...
  WASHINGTON PARISH IN SOUTHEAST LOUISIANA
  THIS INCLUDES THE CITIES OF...FRANKLINTON...BOGALUSA

* UNTIL 415 PM CDT

* AT 341 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  THUNDERSTORM CAPABLE OF PRODUCING A TORNADO 6 MILES WEST OF ENON...
  OR ABOUT 7 MILES SOUTH OF FRANKLINTON...MOVING NORTHEAST AT 20 MPH.
  CORRECTION...THIS TORNADO WARNING DOES NOT INCLUDE ST. TAMMANY 
  PARISH. 

* THE TORNADO IS EXPECTED TO BE NEAR...
   ENON...FRANKLINTON AT 355 PM CDT

SEEK SHELTER ON THE LOWEST FLOOR OF A BUILDING IN AN INTERIOR HALLWAY
OR ROOM SUCH AS A CLOSET OR BATHROOM.

REPORT SEVERE WEATHER TO THE NEAREST LAW ENFORCEMENT AGENCY. THEY
WILL RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE FORECAST
OFFICE.

LAT...LON 3079 9031 3063 9021 3078 8985 3097 8997

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 24, 11:59 AM CDT	Severe Thunderstorm Warning	LIX	East Baton Rouge, East Feliciana, Saint Helena	46 min
Apr 24, 12:45 PM CDT	Severe Thunderstorm Warning	LIX	Saint Helena, Tangipahoa	45 min
Apr 24, 3:25 PM CDT	Severe Thunderstorm Warning	LIX	Tangipahoa, Washington	65 min
Apr 24, 3:44 PM CDT	Tornado Warning	LIX	Saint Tammany, Washington	31 min
Apr 24, 4:01 PM CDT	Tornado Warning	LIX	Washington	44 min

Nearby

Tornado Warnings in Louisiana, 2003 Every tornado warning in 2003 Tornadoes in 2003

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.