Alert archive / Louisiana / Tornado Warnings in 1999

Tornado Warning 3, NWS New Orleans, LA

January 2, 1999East Feliciana Parish, Saint Helena Parish, Louisiana

NWS New Orleans, LA issued this tornado warning at Jan 2, 1999, 5:36 AM CST for East Feliciana Parish, Saint Helena Parish, Louisiana. It was in force for 34 min. 2 reports came from inside the area while it was in force.

The area

The counties it named, with what was reported inside it.

The facts

Issued: Jan 2, 1999, 5:36 AM CST (11:36 UTC)
Expired: Jan 2, 1999, 6:10 AM CST
In force: 34 min
Issued by: NWS New Orleans, LA
Area: Whole counties

Counties East Feliciana Parish, LA, Saint Helena Parish, LA

What was reported inside it

Time	Report	Where	Remark
Jan 2, 6:10 AM CST	Thunderstorm Wind	Greensburg, LA	The St. Helena Sheriff's Office reported trees and power lines down around Greensburg.
Jan 2, 6:15 AM CST	Thunderstorm Wind	Greensburg, LA	Several trees were reported blown down along Louisiana Highway 440 by a retired National Weather Service employee.

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
Jan 2, 3:00 AM CST	Tornado Watch	SPC	6 hr

The nearest sounding before it

Slidell Radar S, LA (KSIL), launched 00:00Z, 11.6 hours before the alert went out and 130 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 964 m above ground
0-6 km bulk shear: 29 kt
0-1 km storm-relative helicity: 137 m²/s²
0-3 km storm-relative helicity: 269 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KNEW 021136 RRA
TORNEW
LAC037-091-021210-

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE NEW ORLEANS LA
536 AM CST SAT JAN 2 1999

THE NATIONAL WEATHER SERVICE IN NEW ORLEANS LA HAS ISSUED A...

* TORNADO WARNING FOR
   - EASTERN EAST FELICIANA PARISH IN SOUTHEASTERN LOUISIANA
   - ST HELENA PARISH IN SOUTHEASTERN LOUISIANA

* UNTIL 610 AM CST

* AT 535 AM CST... DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM
  WITH A POSSIBLE TORNADO 15 MILES WEST OF GREENSBURG OR 8 MILES
  WEST OF DARLINGTON MOVING EAST AT 40 MPH.

* SOME LOCATIONS IN AND NEAR THE PATH OF THIS TORNADO ARE...
  DARLINGTON AT 548 AM CST
  EASLEYVILLE AT 556 AM CST
  GREENSBURG AT 557 AM CST

IF YOU ARE IN THESE AREAS...SEEK SHELTER IN A SMALL INTERIOR ROOM
AWAY FROM WINDOWS

IF YOU ARE IN THE PATH OF A TORNADO...GET UNDER A WORKBENCH OR PIECE
OF STURDY FURNITURE. SEEK SHELTER IN AN INTERIOR ROOM SUCH AS A
CLOSET ON THE LOWEST FLOOR.  USE BLANKETS...PILLOWS...OR CUSHIONS TO
COVER YOUR BODY.  AVOID WINDOWS.

The office that day

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

Issued	Product	Office	Counties	Lasted
Jan 2, 4:38 AM CST	Tornado Warning	LIX	Pointe Coupee	32 min
Jan 2, 4:49 AM CST	Tornado Warning	LIX	West Feliciana	31 min
Jan 2, 6:26 AM CST	Tornado Warning	LIX	Tangipahoa, Washington	34 min
Jan 2, 6:56 AM CST	Severe Thunderstorm Warning	LIX	Lafourche, Saint Charles, Saint John the Baptist	34 min
Jan 2, 7:05 AM CST	Tornado Warning	LIX	Saint Charles, Saint John the Baptist	30 min
Jan 2, 7:53 AM CST	Severe Thunderstorm Warning	LIX	Saint Tammany	32 min
Jan 2, 8:09 AM CST	Tornado Warning	LIX	Saint Tammany	16 min
Jan 2, 8:54 AM CST	Severe Thunderstorm Warning	LIX	Plaquemines	21 min

Nearby

Tornado Warnings in Louisiana, 1999 Every tornado warning in 1999 Tornadoes in 1999

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.