Alert archive / Texas / Severe Thunderstorm Warnings in 1998

Severe Thunderstorm Warning 74, NWS Lake Charles, LA

February 26, 1998Jasper County, Texas

NWS Lake Charles, LA issued this severe thunderstorm warning at Feb 26, 1998, 6:16 AM CST for Jasper County, Texas. It was in force for 44 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
Feb 26, 1998, 6:16 AM CST (12:16 UTC)
Expired
Feb 26, 1998, 7:00 AM CST
In force
44 min
Issued by
NWS Lake Charles, LA
Area
Whole counties

County Jasper County, TX

The radar

The Lake Charles radar (KLCH), 104 km from the middle of the area, began a volume at 12:17 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, 0.3 hours before the alert went out and 105 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 1998-02-26Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 428 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 1998-02-26The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 263 square meters per square second.1939587897Sfc1 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
428 J/kg
Mixed-layer CIN
-42 J/kg
Mixed-layer LCL
616 m above ground
0-6 km bulk shear
51 kt
0-1 km storm-relative helicity
263 m²/s²
0-3 km storm-relative helicity
323 m²/s²
Significant tornado parameter
0.6
Supercell composite
4.0

Open this sounding in Storm Lab

The text

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

469 
WUUS1 KLCH 261215 RRA
SVRLCH
TXC241-261300-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE LAKE CHARLES LA
616 AM CST THU FEB 26 1998

THE NATIONAL WEATHER SERVICE IN LAKE CHARLES LA HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 700 AM CST
FOR PEOPLE IN THE FOLLOWING LOCATION...

IN SOUTHEASTERN TEXAS

   ...JASPER COUNTY

AT 615 AM...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
LINE OF SEVERE THUNDERSTORMS 20 MILES SOUTHWEST OF JASPER TO
20 MILES WEST OF KIRBYVILLE MOVING NORTHEAST AT 45 MPH.

THE COMMUNTIES OF JASPER...TOWN BLUFF...KIRBYVILLE AND MAGNOLIA
SPRINGS ARE IN THE PATH OF THIS STORM.

EXPECT WIND GUSTS IN EXCESS OF 55 MPH WITH THIS STORM.

SEVERE THUNDERSTORMS PRODUCE WINDS IN EXCESS OF 60 MPH...
DESTRUCTIVE HAIL...DEADLY LIGHTNING...AND TORRENTIAL RAIN. FOR
YOUR PROTECTION...SEEK SHELTER IN A STRONG BUILDING. STAY AWAY
FROM WINDOWS AND AVOID USING TELEPHONES...COMPUTERS...OR OTHER
ELECTRICAL EQUIPMENT UNTIL THE STORM HAS PASSED.

What forecasters said that day

The local office's own words before this severe thunderstorm 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 severe thunderstorm warning went out at Feb 26, 2:20 AM CST, 3 hours 56 minutes earlier.

Area forecast discussion, Feb 26, 2:20 AM CST, 3 hours 56 minutes before
SOUTHEAST TEXAS..SOUTHWEST AND CENTRAL LOUISIANA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE LAKE CHARLES LA
220 AM CST THU FEB 26 1998

APPROACHING SQUALL LINE WILL AFFECT N PORTIONS OF FA AND MAY BUILD
SOUTHWARD AS IT MOVES EAST. ALTHOUGH CURRENT RADAR TRENDS NOT SHOWING
ANY SOUTHWARD BUILDING. SVR WIND GUSTS AND SMALL HAIL A POSSIBILITY
AS THE LINE MOVES THROUGH. KLCH VWP SHOWING 45 TO 50 KT SE FLOW AT
2 KFT. LATEST SFC ANALYSIS INDICATING DW PTS IN LOWER 60S AHEAD OF
LINE...PROVIDING AN ABUNDANCE OF LLM. SFC LOW WILL WORK NE UP TX
COAST LATER THIS MORNING AS SFC TROF PUSHES EAST.

KHGX RADAR SHOWING SHOWERS AND THUNDERSTORMS BACK TO THE SW BEHIND
THE LINE AS ADDITIONAL ENERGY REMAINS BEHIND LEAD SHRT WV. FOR THIS
REASON WILL INCLUDE SCT POPS FOR BPT AREA FOR MORN ACTIVITY. IN
AGREEMENT WITH 94E...WHICH SHOWS FLASH FLOOD THREAT IN CEN LA
AND NORTHWARD WHICH IS IN AXIS OF BEST DYNAMICS COUPLED WITH DEEP
MOISTURE. DRYING WILL OCCUR BEHIND SFC TROF LATER THIS AFT. S PORTIONS
OF LA WILL LIKELY SEE BEST RAIN CHC LATER IN THE MORNING AS PACIFIC
FRONT MOVES THROUGH.  HIGH TEMPS SHOULD MAKE IT INTO THE 70S IN BREEZY
W FLOW THIS AFT. ANOTHER SFC TROF WILL APPROACH NW PORTIONS OF FA FRIDAY
NIGHT AND MAY ACT AS FOCUS FOR A FEW SHWRS IF ENOUGH MOISTURE IS PRESENT.

1

BPT 76/43/65 600
LCH 75/44/64 700
LFT 75/45/64 700
AEX 73/42/64 800

The office that day

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

IssuedProductOfficeCountiesLasted
Feb 26, 1:42 AM CSTSevere Thunderstorm WarningLCHTyler63 min
Feb 26, 5:59 AM CSTSevere Thunderstorm WarningLCHTyler46 min
Feb 26, 6:47 AM CSTSevere Thunderstorm WarningLCHNewton43 min
Feb 26, 6:57 AM CSTSevere Thunderstorm WarningLCHJefferson58 min

Nearby

Severe Thunderstorm Warnings in Texas, 1998Every severe thunderstorm warning 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.