Alert archive / Louisiana / Tornado Warnings in 1998

Tornado Warning 24, NWS Lake Charles, LA

September 11, 1998Jefferson Davis Parish, Louisiana

NWS Lake Charles, LA issued this tornado warning at Sep 11, 1998, 5:42 PM CDT for Jefferson Davis Parish, Louisiana. It was in force for 43 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Sep 11, 1998, 5:42 PM CDT (22:42 UTC)
Expired
Sep 11, 1998, 6:25 PM CDT
In force
43 min
Issued by
NWS Lake Charles, LA
Area
Whole counties

County Jefferson Davis Parish, LA

The radar

The Lake Charles radar (KLCH), 42 km from the middle of the area, began a volume at 22:41 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 nearest sounding before it

Lake Charles Mun, LA (KLCH), launched 12:00Z, 10.7 hours before the alert went out and 41 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-pSkew-T log-p diagram, Lake Charles Mun, LA at 12:00Z on 1998-09-11Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 40 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Lake Charles Mun, LA at 12:00Z on 1998-09-11The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 295 square meters per square second.19395878Sfc1 km3 km6 km9 kmRMLM
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
40 J/kg
Mixed-layer CIN
-111 J/kg
Mixed-layer LCL
636 m above ground
0-6 km bulk shear
24 kt
0-1 km storm-relative helicity
295 m²/s²
0-3 km storm-relative helicity
422 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.

781 
WFUS1 KLCH 112243 RRA
TORLCH
LAC053-112325-

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE LAKE CHARLES LA
542 PM CDT FRI SEP 11 1998

THE NATIONAL WEATHER SERVICE IN LAKE CHARLES HAS ISSUED A

* TORNADO WARNING FOR...
  EASTERN JEFFERSON DAVIS PARISH IN SOUTHWESTERN LOUISIANA

* UNTIL 625 PM CDT

* AT 540 PM CDT... NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
  A TORNADO 11 MILES NORTHEAST OF JENNINGS OR 5 MILES EAST OF
  HATHAWAY MOVING NORTH AT 35 MPH. THIS STORM HAS A HISTORY OF
  PRODUCING A TORNADO IN THE MIDLAND AREA...IN ACADIA PARISH.

* TORNADO WILL BE NEAR
  ELTON BY 550 PM CDT

IF YOU ARE CAUGHT IN THE PATH OF A TORNADO...SEEK SHELTER
IN AN INTERIOR ROOM SUCH AS A CLOSET ON THE LOWEST FLOOR. USE
BLANKETS...PILLOWS OR CUSHIONS TO PROTECT YOUR BODY FROM FLYING
DEBRIS.

The office that day

Everything else NWS Lake Charles, LA issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Sep 11, 7:24 AM CDTTornado WarningLCHCameron46 min
Sep 11, 10:53 AM CDTTornado WarningLCHJefferson Davis47 min
Sep 11, 1:49 PM CDTFlash Flood WarningLCHCalcasieu, Cameron4 hr
Sep 11, 4:37 PM CDTFlash Flood WarningLCHAcadia, Allen, Beauregard, Jefferson Davis3 hr
Sep 11, 4:37 PM CDTFlash Flood WarningLCHVermilion3 hr
Sep 11, 5:11 PM CDTTornado WarningLCHAcadia64 min
Sep 11, 5:45 PM CDTTornado WarningLCHAllen, Evangeline65 min

Nearby

Tornado Warnings in Louisiana, 1998Every tornado warning in 1998Tornadoes in 1998

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.