Alert archive / Texas / Tornado Warnings in 1998

Tornado Warning 31, NWS Lake Charles, LA

October 18, 1998Jasper County, Newton County, Orange County, Texas

NWS Lake Charles, LA issued this tornado warning at Oct 18, 1998, 11:30 AM CDT for Jasper County, Newton County, Orange County, Texas. It was in force for 65 min. 1 report 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
Oct 18, 1998, 11:30 AM CDT (16:30 UTC)
Expired
Oct 18, 1998, 12:35 PM CDT
In force
65 min
Issued by
NWS Lake Charles, LA
Area
Whole counties

Counties Jasper County, TX, Newton County, TX, Orange County, TX

The radar

The Lake Charles radar (KLCH), 80 km from the middle of the area, began a volume at 16:30 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.

What was reported inside it

TimeReportWhereRemark
Oct 18, 11:30 AM CDTTornado F0Mauriceville, TX

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

Lake Charles Mun, LA (KLCH), launched 12:00Z, 4.5 hours before the alert went out and 82 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 1998-10-18Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 447 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°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 1998-10-18The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 149 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
447 J/kg
Mixed-layer CIN
-6 J/kg
Mixed-layer LCL
647 m above ground
0-6 km bulk shear
35 kt
0-1 km storm-relative helicity
149 m²/s²
0-3 km storm-relative helicity
172 m²/s²
Significant tornado parameter
0.2
Supercell composite
1.5

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KLCH 181630 RRA
TORLCH
TXC241-351-361-181735-

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE LAKE CHARLES LA
1130 AM CDT SUN OCT 18 1998

THE NATIONAL WEATHER SERVICE IN LAKE CHARLES HAS ISSUED A

* TORNADO WARNING FOR...
  SOUTHERN JASPER COUNTY IN SOUTHEASTERN TEXAS
  SOUTHERN NEWTON COUNTY IN SOUTHEASTERN TEXAS
  ORANGE COUNTY IN SOUTHEASTERN TEXAS

* UNTIL 1235 PM CDT

* AT 1128 AM CDT... NATIONAL WEATHER SERVICE DOPPLER RADAR
  INDICATED A TORNADO 44 MILES SOUTH OF NEWTON OR NEAR
  MAURICEVILLE MOVING NORTH AT 20 MPH.


T
THIS IS A DANGEROUS STORM SITUATION. ACT QUICKLY. GO TO A
SMALL INTERIOR ROOM ON THE LOWEST FLOOR. AVOID WINDOWS AND
DOORS. ABANDON CARS AND MOBILE HO
MES FOR A STURDIER BUILDING
OR GET INTO A DITCH OR CULVERT.

What forecasters said that day

The local office's own words before this tornado warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Lake Charles, LA wrote its last area forecast discussion before this tornado warning went out at Oct 18, 9:13 AM CDT, 2 hours 17 minutes earlier.

Area forecast discussion, Oct 18, 9:13 AM CDT, 2 hours 17 minutes before
SOUTHEAST TEXAS..SOUTHWEST AND CENTRAL LOUISIANA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE LAKE CHARLES LA
913 AM CDT SUN OCT 18 1998

HEAVY RAIN TRAINING OVER SOUTHEAST TEXAS HAS BEGUN TO AFFECT EXTREME
WESTERN PORTIONS OF FORECAST AREA. SATELLITE TRENDS SHOW FOCUS OF
DEVELOPMENT SHIFTING DOWN THE TEXAS COAST NEAR CORPUS AREA. STILL
FEEL COMFORTABLE LEAVING OUR SOUTHEAST TEXAS AREA OUT OF FFA UNTIL
MAYBE TONIGHT...CAN HANDLE SITUATION TODAY WITH NOWCASTS. CAN BOOST
UPPER SOUTHEAST TEXAS POPS...HARDIN...JASPER...NEWTON...TYLER TO
CATEGORICAL AND ADD MENTION OF HEAVY RAINFALL IN ALL OF SOUTHEAST
TEXAS. ALL ELSE LOOKS WELL. 8

The office that day

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

IssuedProductOfficeCountiesLasted
Oct 18, 10:23 AM CDTTornado WarningLCHJasper, Orange62 min
Oct 18, 11:43 AM CDTFlash Flood WarningLCHHardin, Jasper2 hr
Oct 18, 4:42 PM CDTFlash Flood WarningLCHOrange2 hr

Nearby

Tornado Warnings in Texas, 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.