Alert archive / Louisiana / Tornado Warnings in 2003

Tornado Warning 13, NWS New Orleans, LA

April 8, 2003Saint James Parish, Saint John the Baptist Parish, Louisiana

NWS New Orleans, LA issued this tornado warning at Apr 8, 2003, 7:44 AM CDT for Saint James Parish, Saint John the Baptist Parish, Louisiana. It was in force for 31 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 8, 2003, 7:44 AM CDT (12:44 UTC)
Expired: Apr 8, 2003, 8:15 AM CDT
In force: 31 min
Issued by: NWS New Orleans, LA
Area: Counties, with a storm outline in the text

Counties Saint James Parish, LA, Saint John the Baptist Parish, LA

The nearest sounding before it

Slidell Radar S, LA (KSIL), launched 12:00Z, 0.7 hours before the alert went out and 89 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: 73 J/kg
Mixed-layer CIN: -166 J/kg
Mixed-layer LCL: 708 m above ground
0-6 km bulk shear: 52 kt
0-1 km storm-relative helicity: 230 m²/s²
0-3 km storm-relative helicity: 427 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.8

Open this sounding in Storm Lab

The text

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

376 
WFUS54 KLIX 081244
TORNEW
LAC093-095-081315-

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE NEW ORLEANS LA
744 AM CDT TUE APR 8 2003

THE NATIONAL WEATHER SERVICE IN NEW ORLEANS HAS ISSUED A

* TORNADO WARNING FOR...
  ST. JAMES PARISH IN SOUTHEAST LOUISIANA
  ST. JOHN THE BAPTIST PARISH IN SOUTHEAST LOUISIANA
  THIS INCLUDES THE CITIES OF...RESERVE...LAPLACE

* UNTIL 815 AM CDT

* AT 738 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  THUNDERSTORM CAPABLE OF PRODUCING A TORNADO OVER EDGARD...OR ABOUT
  7 MILES SOUTH OF RESERVE...MOVING EAST AT 55 MPH.

* OTHER LOCATIONS IN THE WARNING INCLUDE CONVENT...GARYVILLE...
  GRAMERCY AND LUTCHER

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 3003 9051 2990 9054 2991 9084 3009 9092
          3021 9044 3008 9041

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 7, 7:05 PM CDT	Special Marine Warning	LIX		55 min
Apr 7, 8:01 PM CDT	Special Marine Warning	LIX		59 min
Apr 8, 2:59 AM CDT	Tornado Warning	LIX	Saint Helena, Tangipahoa	31 min
Apr 8, 6:50 AM CDT	Special Marine Warning	LIX		55 min
Apr 8, 7:37 AM CDT	Severe Thunderstorm Warning	LIX	Saint James, Saint John the Baptist	53 min
Apr 8, 8:26 AM CDT	Special Marine Warning	LIX		2 hr
Apr 8, 8:26 AM CDT	Special Marine Warning	LIX		2 hr
Apr 8, 8:47 AM CDT	Severe Thunderstorm Warning	LIX	Jefferson, Orleans, Plaquemines, Saint Bernard	43 min
Apr 8, 10:25 AM CDT	Special Marine Warning	LIX		95 min
Apr 8, 10:25 AM CDT	Special Marine Warning	LIX		95 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.