Alert archive / Louisiana / Tornado Warnings in 2002

Tornado Warning 32, NWS New Orleans, LA

September 26, 2002Terrebonne Parish, Louisiana

NWS New Orleans, LA issued this tornado warning at Sep 26, 2002, 1:35 AM CDT for Terrebonne Parish, Louisiana. It was in force for 7 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: Sep 26, 2002, 1:35 AM CDT (06:35 UTC)
Expired: Oct 3, 2002, 5:00 AM CDT
In force: 7 days
Issued by: NWS New Orleans, LA
Area: Counties, with a storm outline in the text

County Terrebonne Parish, LA

The nearest sounding before it

Slidell Radar S, LA (KSIL), launched 00:00Z, 6.6 hours before the alert went out and 57 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: 201 J/kg
Mixed-layer CIN: -11 J/kg
Mixed-layer LCL: 461 m above ground
0-6 km bulk shear: 30 kt
0-1 km storm-relative helicity: 365 m²/s²
0-3 km storm-relative helicity: 455 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 2.4

Open this sounding in Storm Lab

The text

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

761 
WFUS54 KLIX 260635
TORNEW
LAC109-260715-

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE NEW ORLEANS LA
133 AM CDT THU SEP 26 2002

THE NATIONAL WEATHER SERVICE IN NEW ORLEANS HAS ISSUED A

* TORNADO WARNING FOR...
  TERREBONNE PARISH IN SOUTHEAST LOUISIANA

* UNTIL 215 AM CDT

* AT 129 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  THUNDERSTORM CAPABLE OF PRODUCING A TORNADO 8 MILES SOUTHEAST OF
  MONTEGUT...OR ABOUT 8 MILES WEST OF GALLIANO...MOVING WEST AT 15
  MPH.

* THE TORNADO IS EXPECTED TO BE NEAR...
   MONTEGUT AT 155 AM CDT
   CHAUVIN AT 200 AM CDT
   DULAC AT 215 AM 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.

The office that day

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

Issued	Product	Office	Counties	Lasted
Sep 25, 8:59 PM CDT	Flash Flood Warning	LIX	Jefferson, Lafourche, Orleans, Plaquemines, Saint Bernard, Saint Charles	6 hr
Sep 25, 11:41 PM CDT	Tornado Warning	LIX	Jefferson, Lafourche	109 min
Sep 25, 11:41 PM CDT	Tornado Warning	LIX	Lafourche	34 min
Sep 26, 12:20 AM CDT	Tornado Warning	LIX	Terrebonne	40 min
Sep 26, 12:20 AM CDT	Tornado Warning	LIX	Lafourche	40 min
Sep 26, 1:06 AM CDT	Tornado Warning	LIX	Lafourche	24 min
Sep 26, 1:06 AM CDT	Tornado Warning	LIX	Terrebonne	24 min
Sep 26, 2:21 AM CDT	Tornado Warning	LIX	Terrebonne	39 min
Sep 26, 3:22 AM CDT	Flash Flood Warning	LIX	Assumption, Jefferson, Lafourche, Orleans, Plaquemines, Saint Bernard and 4 more	4 hr
Sep 26, 7:41 AM CDT	Flash Flood Warning	LIX	Jefferson, Orleans, Plaquemines, Saint Bernard	3 hr
Sep 26, 8:24 AM CDT	Flash Flood Warning	LIX	Saint Tammany	3 hr
Sep 26, 10:56 AM CDT	Flash Flood Warning	LIX	Jefferson, Plaquemines, Saint Bernard	2 hr
Sep 26, 11:52 AM CDT	Flash Flood Warning	LIX	Saint Tammany	3 hr
Sep 26, 1:30 PM CDT	Flash Flood Warning	LIX	Jefferson	3 hr
Sep 26, 2:26 PM CDT	Flash Flood Warning	LIX	Saint John the Baptist, Tangipahoa	4 hr
Sep 26, 3:08 PM CDT	Flash Flood Warning	LIX	Saint Tammany	4 hr
Sep 26, 6:01 PM CDT	Flash Flood Warning	LIX	Livingston, Saint John the Baptist, Saint Tammany, Tangipahoa	6 hr

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.