Alert archive / Louisiana / Tornado Warnings in 2002

Tornado Warning 68, NWS New Orleans, LA

October 25, 2002Saint Charles Parish, Louisiana

NWS New Orleans, LA issued this tornado warning at Oct 25, 2002, 8:04 PM CDT for Saint Charles Parish, Louisiana. It was in force for 55 days. 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 25, 2002, 8:04 PM CDT (01:04 UTC)
Expired: Dec 19, 2002, 1:15 PM CST
In force: 55 days
Issued by: NWS New Orleans, LA
Area: Counties, with a storm outline in the text

County Saint Charles Parish, LA

The radar

The Mobile radar (KMOB), 104 km from the middle of the area, began a volume at 01:08 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

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 25, 6:40 PM CDT	Tornado Watch	SPC	5 hr

The nearest sounding before it

Slidell Radar S, LA (KSIL), launched 00:00Z, 1.1 hours before the alert went out and 44 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: 1216 J/kg
Mixed-layer CIN: 0 J/kg
Mixed-layer LCL: 466 m above ground
0-6 km bulk shear: 41 kt
0-1 km storm-relative helicity: 132 m²/s²
0-3 km storm-relative helicity: 198 m²/s²
Significant tornado parameter: 0.8
Supercell composite: 5.3

Open this sounding in Storm Lab

The text

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

561 
WFUS54 KLIX 260104
TORNEW
LAC089-260130-

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE NEW ORLEANS LA
803 PM CDT FRI OCT 25 2002

THE NATIONAL WEATHER SERVICE IN NEW ORLEANS HAS ISSUED A

* TORNADO WARNING FOR...
  ST. CHARLES PARISH IN SOUTHEAST LOUISIANA

* UNTIL 830 PM CDT

* AT 755 PM CDT...THE PUBLIC REPORTED A TORNADO OVER HAHNVILLE... 
  MOVING NORTH TO NORTHEAST AT 15 MPH. 

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 3005 9027 3006 9040 3000 9044 2989 9031
          2993 9027

The office that day

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

Issued	Product	Office	Counties	Lasted
Oct 25, 7:08 PM CDT	Tornado Warning	LIX	Jefferson, Saint Charles	17 days
Oct 25, 7:17 PM CDT	Tornado Warning	LIX	Jefferson, Plaquemines	48 days
Oct 25, 7:37 PM CDT	Special Marine Warning	LIX		113 min
Oct 25, 7:43 PM CDT	Tornado Warning	LIX	Saint Charles	55 days
Oct 25, 8:26 PM CDT	Tornado Warning	LIX	Orleans, Plaquemines, Saint Bernard	34 min
Oct 25, 8:31 PM CDT	Tornado Warning	LIX	Saint Tammany	55 days
Oct 25, 9:56 PM CDT	Special Marine Warning	LIX		64 min
Oct 25, 10:42 PM CDT	Special Marine Warning	LIX		2 hr
Oct 25, 10:42 PM CDT	Special Marine Warning	LIX		2 hr
Oct 26, 9:37 AM CDT	Special Marine Warning	LIX		83 min
Oct 26, 12:15 PM CDT	Special Marine Warning	LIX		60 min
Oct 26, 12:35 PM CDT	Severe Thunderstorm Warning	LIX	Jefferson, Lafourche, Terrebonne	40 min
Oct 26, 1:20 PM CDT	Special Marine Warning	LIX		85 min
Oct 26, 2:04 PM CDT	Severe Thunderstorm Warning	LIX	Jefferson, Lafourche	41 min
Oct 26, 2:48 PM CDT	Special Marine Warning	LIX		117 min
Oct 26, 2:48 PM CDT	Special Marine Warning	LIX		117 min

Nearby

Tornado Warnings in Louisiana, 2002 Every tornado warning in 2002 Tornadoes in 2002

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; radar from the NEXRAD Level II archive.