Alert archive / Louisiana / Tornado Warnings in 2000

Tornado Warning 39, NWS New Orleans, LA

August 10, 20004 parishes in Louisiana

NWS New Orleans, LA issued this tornado warning at Aug 10, 2000, 5:11 PM CDT for 4 parishes in Louisiana. It was in force for 64 min. 1 report came from inside the area while it was in force.

The area

The outline the Iowa Environmental Mesonet reconstructed for it; the warning itself named whole counties, with what was reported inside it.

The facts

Issued: Aug 10, 2000, 5:11 PM CDT (22:11 UTC)
Expired: Aug 10, 2000, 6:15 PM CDT
In force: 64 min
Issued by: NWS New Orleans, LA
Area: Whole counties; the outline is the Mesonet’s reconstruction

Counties Jefferson Parish, LA, Orleans Parish, LA, Plaquemines Parish, LA, Saint Bernard Parish, LA

What was reported inside it

Time	Report	Where	Remark
Aug 10, 5:12 PM CDT	Tornado F0	New Orleans, LA	A weak tornado briefly touched down in the Michoud area of New Orleans East causing no damage.

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 nearest sounding before it

Slidell Radar S, LA (KSIL), launched 12:00Z, 10.2 hours before the alert went out and 40 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: 989 J/kg
Mixed-layer CIN: -129 J/kg
Mixed-layer LCL: 1197 m above ground
0-6 km bulk shear: 21 kt
0-1 km storm-relative helicity: 61 m²/s²
0-3 km storm-relative helicity: 108 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.3

Open this sounding in Storm Lab

The text

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

000 
WFUS54 KLIX 102217
TORNEW

LAC051-071-075-087-102315-

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE NEW ORLEANS LA
511 PM CDT THU AUG 10 2000

THE NATIONAL WEATHER SERVICE IN NEW ORLEANS HAS ISSUED A

* TORNADO WARNING FOR...
  JEFFERSON PARISH IN SOUTHEAST LOUISIANA
  THIS INCLUDES THE CITIES OF...HARVEY...MARRERO...TIMBERLANE
  ORLEANS PARISH IN SOUTHEAST LOUISIANA
  THIS INCLUDES THE CITY OF NEW ORLEANS
  PLAQUEMINES PARISH IN SOUTHEAST LOUISIANA
  THIS INCLUDES THE CITY OF BELLE CHASSE
  ST. BERNARD PARISH IN SOUTHEAST LOUISIANA
  THIS INCLUDES THE CITY OF CHALMETTE

* UNTIL 615 PM CDT

* AT 508 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  LINE OF SEVERE THUNDERSTORMS FROM 8 MILES NORTHWEST OF NEW ORLEANS
  TO 8 MILES NORTHEAST OF VIOLET...MOVING SOUTHWEST AT 30 MPH.

THIS LINE OF STORMS HAS A HISTORY OF PRODUCING DAMAGING WINDS AND 
TORNADIC CONDITIONS IN NEW ORLEANS EAST NEAR MICHOUD AT 512 PM CDT 
AS REPORTED AND CONFIRMED BY THE NEW ORLEANS POLICE DEPARTMENT.

* SEVERE THUNDERSTORMS WILL BE...
  OVER GRETNA AT 520 PM CDT
  OVER HARVEY...TERRYTOWN...TIMBERLANE...VIOLET AT 525 PM CDT
  OVER BELLE CHASSE...MARRERO AT 530 PM CDT
  OVER WESTWEGO AT 535 PM CDT
  OVER BRIDGE CITY AT 540 PM CDT
  OVER JEAN LAFITTE AT 545 PM CDT

THIS IS A DANGEROUS STORM WITH DAMAGING WINDS...STAY INDOORS AWAY
FROM WINDOWS.

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

LAT...LON 3032 8995 3007 8998 3004 8966 2952 9000
          2970 9012 2992 9018

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 10, 4:12 PM CDT	Severe Thunderstorm Warning	LIX	Orleans, Saint Bernard, Saint Tammany	48 min
Aug 10, 4:47 PM CDT	Tornado Warning	LIX	Orleans	28 min
Aug 10, 4:56 PM CDT	Severe Thunderstorm Warning	LIX	Saint Tammany, Tangipahoa	64 min
Aug 10, 4:56 PM CDT	Severe Thunderstorm Warning	LIX	Livingston	64 min
Aug 10, 5:11 PM CDT	Severe Thunderstorm Warning	LIX	Orleans, Plaquemines, Saint Bernard	64 min
Aug 10, 5:11 PM CDT	Severe Thunderstorm Warning	LIX	Jefferson	64 min
Aug 10, 6:13 PM CDT	Severe Thunderstorm Warning	LIX	Ascension, East Baton Rouge, Livingston	32 min
Aug 10, 6:29 PM CDT	Severe Thunderstorm Warning	LIX	Lafourche, Saint Charles, Terrebonne	61 min
Aug 10, 6:44 PM CDT	Severe Thunderstorm Warning	LIX	Ascension, Assumption, East Baton Rouge, Iberville, West Baton Rouge	61 min
Aug 10, 6:44 PM CDT	Severe Thunderstorm Warning	LIX	Saint James	61 min
Aug 10, 6:44 PM CDT	Severe Thunderstorm Warning	LIX	Livingston	61 min

Nearby

Tornado Warnings in Louisiana, 2000 Every tornado warning in 2000 Tornadoes in 2000

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.