Alert archive / Louisiana / Tornado Warnings in 1998

Tornado Warning 28, NWS Lake Charles, LA

September 12, 1998Vermilion Parish, Louisiana

NWS Lake Charles, LA issued this tornado warning at Sep 12, 1998, 9:23 AM CDT for Vermilion Parish, Louisiana. It was in force for 32 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 12, 1998, 9:23 AM CDT (14:23 UTC)
Expired
Sep 12, 1998, 9:55 AM CDT
In force
32 min
Issued by
NWS Lake Charles, LA
Area
Whole counties

County Vermilion Parish, LA

The radar

The Lake Charles radar (KLCH), 95 km from the middle of the area, began a volume at 14:23 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, 2.4 hours before the alert went out and 93 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 1998-09-12Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 527 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 1998-09-12The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 145 square meters per square second.193958Sfc1 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
527 J/kg
Mixed-layer CIN
-12 J/kg
Mixed-layer LCL
744 m above ground
0-6 km bulk shear
19 kt
0-1 km storm-relative helicity
145 m²/s²
0-3 km storm-relative helicity
171 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.

704 
WFUS1 KLCH 121422 RRA
TORLCH
LAC113-121455-

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE LAKE CHARLES LA
923 AM CDT SAT SEP 12 1998

THE NATIONAL WEATHER SERVICE IN LAKE CHARLES HAS ISSUED A

* TORNADO WARNING FOR...
  VERMILION PARISH IN SOUTHWESTERN LOUISIANA

* UNTIL 955 AM CDT

* AT 921 AM CDT... NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
  A DEVELOPING TORNADO 2 MILES SOUTHWEST OF ABBEVILLE OR IN THE
  VICINITY OF PERRY MOVING NORTH AT 25 MPH.

* TORNADO WILL BE NEAR
  PERRY BY 922 AM CDT
  ABBEVILLE BY 925 AM CDT
  MEAUX BY 930 AM CDT
  MAURICE BY 945 AM 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, 10:16 PM CDTFlash Flood WarningLCHLafayette, Saint Landry3 hr
Sep 12, 8:47 AM CDTTornado WarningLCHAllen53 min
Sep 12, 9:17 AM CDTTornado WarningLCHLafayette48 min
Sep 12, 11:00 AM CDTFlash Flood WarningLCHCalcasieu2 hr
Sep 12, 1:04 PM CDTTornado WarningLCHRapides61 min
Sep 12, 2:27 PM CDTFlash Flood WarningLCHEvangeline2 hr

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.