Alert archive / Louisiana / Tornado Warnings in 1998

Tornado Warning 20, NWS Lake Charles, LA

April 28, 1998Vermilion Parish, Louisiana

NWS Lake Charles, LA issued this tornado warning at Apr 28, 1998, 1:30 AM CDT for Vermilion Parish, Louisiana. It was in force for 65 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: Apr 28, 1998, 1:30 AM CDT (06:30 UTC)
Expired: Apr 28, 1998, 2:35 AM CDT
In force: 65 min
Issued by: NWS Lake Charles, LA
Area: Whole counties

County Vermilion Parish, LA

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Apr 28, 12:00 AM CDT	Severe Thunderstorm Watch	SPC	5 hr

The nearest sounding before it

Lake Charles Mun, LA (KLCH), launched 00:00Z, 6.5 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-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: 1649 J/kg
Mixed-layer CIN: -15 J/kg
Mixed-layer LCL: 573 m above ground
0-6 km bulk shear: 40 kt
0-1 km storm-relative helicity: 70 m²/s²
0-3 km storm-relative helicity: 156 m²/s²
Significant tornado parameter: 0.7
Supercell composite: 3.9

Open this sounding in Storm Lab

The text

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

214 
WFUS1 KLCH 280633 RRA
TORLCH
LAC113-280735-

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE LAKE CHARLES LA
130 AM CDT TUE APR 28 1998

THE NATIONAL WEATHER SERVICE IN LAKE CHARLES HAS ISSUED A

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

* UNTIL 235 AM CDT

* AT 130 AM CDT... NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
  A DEVELOPING TORNADO 30 MILES WEST OF ABBEVILLE OR 7 MILES WEST
  OF GUEYDAN MOVING EAST AT 30 MPH.

* TORNADO WILL BE NEAR
  GUEYDAN BY 145 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.

Issued	Product	Office	Counties	Lasted
Apr 27, 10:09 PM CDT	Severe Thunderstorm Warning	LCH	Rapides	61 min
Apr 27, 11:02 PM CDT	Severe Thunderstorm Warning	LCH	Avoyelles	43 min
Apr 27, 11:14 PM CDT	Tornado Warning	LCH	Avoyelles	46 min
Apr 27, 11:26 PM CDT	Severe Thunderstorm Warning	LCH	Calcasieu, Cameron	59 min
Apr 27, 11:40 PM CDT	Severe Thunderstorm Warning	LCH	Allen, Evangeline	60 min
Apr 28, 12:03 AM CDT	Severe Thunderstorm Warning	LCH	Avoyelles	57 min

Nearby

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