Alert archive / Texas / Severe Thunderstorm Warnings in 1998

Severe Thunderstorm Warning 39, NWS Lake Charles, LA

January 26, 1998Jefferson County, Orange County, Texas

NWS Lake Charles, LA issued this severe thunderstorm warning at Jan 26, 1998, 6:51 AM CST for Jefferson County, Orange County, Texas. It was in force for 64 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
Jan 26, 1998, 6:51 AM CST (12:51 UTC)
Expired
Jan 26, 1998, 7:55 AM CST
In force
64 min
Issued by
NWS Lake Charles, LA
Area
Whole counties

Counties Jefferson County, TX, Orange County, TX

The radar

The Lake Charles radar (KLCH), 79 km from the middle of the area, began a volume at 12:51 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, 0.9 hours before the alert went out and 81 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 1998-01-26Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 10 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 1998-01-26The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 316 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
10 J/kg
Mixed-layer CIN
-154 J/kg
Mixed-layer LCL
469 m above ground
0-6 km bulk shear
49 kt
0-1 km storm-relative helicity
316 m²/s²
0-3 km storm-relative helicity
331 m²/s²
Significant tornado parameter
0.0
Supercell composite
1.4

Open this sounding in Storm Lab

The text

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

986 
WUUS1 KLCH 261254 RRA
SVRLCH
GMZ450-TXC245-351-361-261355-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE LAKE CHARLES LA
651 AM CST MON JAN 26 1998

THE NATIONAL WEATHER SERVICE IN LAKE CHARLES LA HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 755 AM CST
FOR PEOPLE IN THE FOLLOWING LOCATIONS...

IN SOUTHEASTERN TEXAS

   ...JEFFERSON COUNTY
   ...SOUTHERN NEWTON COUNTY
   ...ORANGE COUNTY

AND ADJACENT COASTAL WATERS

AT 648 AM...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A LINE
OF SEVERE THUNDERSTORMS THAT EXTENDED FROM 10 MILES NORTHWEST OF
DEWEYVILLE TO NEAR NOME. MOVEMENT WAS TO THE EAST AT 30 MPH. THESE
STORMS HAVE A HISTORY OF PRODUCING DIME SIZE HAIL.

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 Jan 26, 2:42 AM CST, 4 hours 9 minutes earlier.

Area forecast discussion, Jan 26, 2:42 AM CST, 4 hours 9 minutes before
SOUTHEAST TEXAS..SOUTHWEST AND CENTRAL LOUISIANA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE LAKE CHARLES LA
242 AM CST MON JAN 26 1998

VIGOROUS 5H S/W WILL SWEEP ACROSS THE LOWER MS VALLEY TODAY AS
90 KT 3H JET MAX DIVES ACROSS THE SOUTHERN PLAINS INTO THE LOWER
MS VALLEY. THIS WILL CREATE STRONG UPPER LEVEL DIFFLUENCE ACROSS
THE AREA THIS MORNING AND EARLY AFTERNOON. AT 08Z SFC COLD FRONT
WAS MOVING ACROSS CENTRAL TX WITH PREFRONTAL TROF JUST OUT AHEAD
OF IT. EXPECT COLD FRONT TO PUSH INTO EXTREME SOUTHEAST TEXAS AROUND
18Z AND EXIT THE SE PORTION OF THE FA BY 03Z TUESDAY. WITH STRONG
UVV BEING PRODUCED BY THE UPPER LEVEL DYNAMICS AND WITH AMS BECOMING
INCREASINGLY UNSTABLE...THERE WILL BE THE POSSIBLITY OF SOME STRONG
THUNDERSTORMS. WOULD NOT RULE OUT AN ISOLATED SVR TSRA WITH LIS
FORECASTED TO FALL TO AROUND -5 ACROSS SOUTHERN LA BY AFTERNOON.
AFTER FROPA...SKIES WILL CLR OUT RATHER NICELY.    10

LCH 61/45/65 800  AEX  57/41/63 800
LFT 60/44/63 800  BPT  63/44/66 800

The office that day

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

IssuedProductOfficeCountiesLasted
Jan 26, 5:18 AM CSTSevere Thunderstorm WarningLCHHardin27 min
Jan 26, 6:15 AM CSTSevere Thunderstorm WarningLCHHardin30 min
Jan 26, 6:51 AM CSTSevere Thunderstorm WarningLCHNewton64 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.