Alert archive / Texas / Severe Thunderstorm Warnings in 1998

Severe Thunderstorm Warning 151, NWS Lake Charles, LA

September 22, 1998Orange County, Texas

NWS Lake Charles, LA issued this severe thunderstorm warning at Sep 22, 1998, 8:09 PM CDT for Orange County, Texas. It was in force for 46 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 22, 1998, 8:09 PM CDT (01:09 UTC)
Expired: Sep 22, 1998, 8:55 PM CDT
In force: 46 min
Issued by: NWS Lake Charles, LA
Area: Whole counties

County Orange County, TX

The radar

The Lake Charles radar (KLCH), 65 km from the middle of the area, began a volume at 01:13 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 00:00Z, 1.2 hours before the alert went out and 67 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: 2387 J/kg
Mixed-layer CIN: -8 J/kg
Mixed-layer LCL: 1176 m above ground
0-6 km bulk shear: 19 kt
0-1 km storm-relative helicity: 57 m²/s²
0-3 km storm-relative helicity: 86 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.

914 
WUUS1 KLCH 230110 RRA
SVRLCH
TXC361-230155-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE LAKE CHARLES LA
809 PM CDT TUE SEP 22 1998

THE NATIONAL WEATHER SERVICE IN LAKE CHARLES HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  ORANGE COUNTY IN SOUTHEASTERN TEXAS

* UNTIL 855 PM CDT

* AT 807 PM CDT... NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
  A SEVERE THUNDERSTORM 11 MILES NORTHWEST OF ORANGE MOVING
  SOUTHWEST AT 15 MPH.

* THIS STORM IS EXPECTED TO REMAIN IN RURAL AREAS.


THIS IS A VERY DANGEROUS STORM. FOR YOUR PROTECTION...SEEK
SHELTER IN A STRONG BUILDING. MOVE TO AN INTERIOR ROOM...SUCH
AS A CLOSET OR BATHROOM ON THE LOWEST FLOOR OF YOUR HOME OR
BUSINESS. DO NOT STAND BY WINDOWS.

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 Sep 22, 2:51 PM CDT, 5 hours 18 minutes earlier.

Area forecast discussion, Sep 22, 2:51 PM CDT, 5 hours 18 minutes before

SOUTHEAST TEXAS..SOUTHWEST AND CENTRAL LOUISIANA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE LAKE CHARLES LA
251 PM CDT TUE SEP 22 1998

TYPICAL EARLY AUTUMN WEATHER PATTERN WILL CONTINUE THROUGH FORECAST
PERIOD. CHANGE IN SEASONS NOTED AS TEMPS ACROSS W KS AND TX PANHANDLE
REMAIN IN THE 50S. 18Z SURFACE ANALYSIS SHOWS STATIONARY FRONT ACROSS
TX PANHANDLE TO CENTRAL OK TO NORTHERN AR. ONLY ISLD SHOWERS AND
THUNDERSTORM OVER FORECAST AREA THIS AFTERNOON...WILL DISSIPATE
QUICKLY AFTER SUNSET.

PROGRESSIVE UPPER AIR PATTERN WILL CONTINUE THROUGH THURSDAY AS TWO
SHORT WAVE TROFS MOVE IN FAST JETSTREAM FLOW ACROSS NE U.S. AND MID-
ATLANTIC STATES. HIGH PRESSURE WILL SETTLE IN OVER MIDWEST AND
RIDGE TO MID-ATLANTIC STATES BY THURSDAY. TROF WILL DRAG ITS HEELS
AND WASH OUT WITH LITTLE IF ANY EFFECT ON LA/TX. OTHER FEATURE...
UPPER LOW OVER WESTERN GULF WILL CONTINUE CAUSE SHOWERS AND
THUNDERSTORMS UNTIL SYSTEM FLATTENS OUT BY FRIDAY. IN THE EXTENDED
FORECAST...RIDGE OVER EASTERN U.S. WILL HAVE TO BE EVALUATED AS
GEORGES CONTINUES ON ITS W/WNW PATH SINCE THIS WILL EVENTUALLY
DETERMINE THE COURSE.

GUIDANCE TEMPS A BIT ON THE COOL SIDE...AND POPS A TAD HIGH.

13

LCH 75/92/74/92 1212
LFT 75/92/75/92 1212
AEX 73/93/73/92 1212
BPT 75/92/74/91 1212

Nearby

Severe Thunderstorm Warnings in Texas, 1998 Every 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.