Alert archive / Louisiana / Tornado Warnings in 2002

Tornado Warning 70, NWS New Orleans, LA

October 25, 2002Saint Tammany Parish, Louisiana

NWS New Orleans, LA issued this tornado warning at Oct 25, 2002, 8:31 PM CDT for Saint Tammany Parish, Louisiana. It was in force for 55 days. 2 reports came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued: Oct 25, 2002, 8:31 PM CDT (01:31 UTC)
Expired: Dec 19, 2002, 2:15 PM CST
In force: 55 days
Issued by: NWS New Orleans, LA
Area: Counties, with a storm outline in the text

County Saint Tammany Parish, LA

What was reported inside it

Time	Report	Where	Remark
Oct 29, 6:20 AM CST	Thunderstorm Wind	Countywide, LA	Several trees and utility poles were blown down at various locations around the parish. Three homes were damaged by falling trees.
Nov 11, 6:00 PM CST	Thunderstorm Wind	Bush, LA	Several trees were blown down along Highway 40 near Bush.

NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in.

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, 1.5 hours before the alert went out and 36 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.

270 
WFUS54 KLIX 260131
TORNEW
LAC103-260230-

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

THE NATIONAL WEATHER SERVICE IN NEW ORLEANS HAS ISSUED A

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

* UNTIL 930 PM CDT

* AT 829 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  THUNDERSTORM CAPABLE OF PRODUCING A TORNADO OVER ABITA SPRINGS...OR
  ABOUT 9 MILES EAST OF COVINGTON...MOVING NORTHEAST AT 10 MPH.

* THE TORNADO IS EXPECTED TO BE NEAR...
   BUSH AT 910 PM CDT
   SUN AT 920 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 3038 8994 3045 9010 3066 8999 3064 8982
          3053 8979

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, 8:04 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, 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.