Alert archive / Texas / Severe Thunderstorm Warnings in 1998

Severe Thunderstorm Warning 186, NWS Austin/San Antonio, TX

June 15, 1998Lavaca County, Texas

NWS Austin/San Antonio, TX issued this severe thunderstorm warning at Jun 15, 1998, 5:37 PM CDT for Lavaca County, Texas. It was in force for 63 min. 4 reports 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: Jun 15, 1998, 5:37 PM CDT (22:37 UTC)
Expired: Jun 15, 1998, 6:40 PM CDT
In force: 63 min
Issued by: NWS Austin/San Antonio, TX
Area: Whole counties

County Lavaca County, TX

What was reported inside it

Time	Report	Where
Jun 15, 5:40 PM CDT	Thunderstorm Wind	Shiner, TX
Jun 15, 5:45 PM CDT	Hail 0.75	Halletsville, TX
Jun 15, 5:50 PM CDT	Thunderstorm Wind	Halletsville, TX
Jun 15, 5:50 PM CDT	Hail 1	Halletsville, 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 watch it was issued in

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

Issued	Product	Office	Lasted
Jun 15, 4:00 PM CDT	Severe Thunderstorm Watch	SPC	5 hr

The nearest sounding before it

Corpus Christi, TX (KCRP), launched 12:00Z, 10.6 hours before the alert went out and 188 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: 701 J/kg
Mixed-layer CIN: -484 J/kg
Mixed-layer LCL: 1314 m above ground
0-6 km bulk shear: 21 kt
0-1 km storm-relative helicity: 24 m²/s²
0-3 km storm-relative helicity: 95 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.3

Open this sounding in Storm Lab

The text

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

787 
WUUS1 KSAT 152240 RRA
SVRSAT
TXC285-152340-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
537 PM CDT MON JUN 15 1998

THE NATIONAL WEATHER SERVICE IN AUSTIN/SAN ANTONIO HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  LAVACA COUNTY IN SOUTH CENTRAL TEXAS

* UNTIL 640 PM CDT


* AT AT 535 PM CDT... A SEVERE THUNDERSTORM WAS INDICATED FROM
  MOULTON TO SHINER... BY NATIONAL WEATHER SERVICE RADAR... MOVING
  NORTHEAST AT 30 MPH.

* SOME CITIES AND LOCATIONS IN THE PATH OF THIS STORM ARE...
HALLETTSVILLE

SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 60 MPH...
DESTRUCTIVE HAIL... DEADLY LIGHTNING... AND VERY HEAVY RAIN. FOR
YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF
YOUR HOME OR BUSINESS. HEAVY RAINS FLOOD ROADS QUICKLY SO DO NOT
DRIVE INTO AREAS WHERE WATER COVERS THE ROAD.

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.

In the hours before

Local storm report, Jun 15, 1:35 PM CDT, 4 hours 2 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TEXAS
135 PM CDT MON JUN 15 1998

TIME(CDT)  .....CITY LOCATION..... STATE  ...EVENT/REMARKS...
           ....COUNTY LOCATION....

1215 PM    GONZALES 10S              TX   1.50 INCH HAIL
06/15/98   GONZALES                       REPORTED BY RADIO STATION

Local storm report, Jun 15, 1:35 PM CDT, 4 hours 2 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TEXAS
135 PM CDT MON JUN 15 1998

TIME(CDT)  .....CITY LOCATION..... STATE  ...EVENT/REMARKS...
           ....COUNTY LOCATION....

1215 PM    GONZALES 10S              TX   1.50 INCH HAIL
06/15/98   GONZALES                       REPORTED BY RADIO STATION

The office that day

Everything else NWS Austin/San Antonio, TX issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jun 15, 10:50 AM CDT	Severe Thunderstorm Warning	EWX	Wilson	30 min
Jun 15, 11:57 AM CDT	Severe Thunderstorm Warning	EWX	Gonzales	33 min
Jun 15, 5:09 PM CDT	Severe Thunderstorm Warning	EWX	Karnes	46 min
Jun 15, 5:39 PM CDT	Tornado Warning	EWX	DeWitt	31 min
Jun 15, 5:51 PM CDT	Severe Thunderstorm Warning	EWX	DeWitt	34 min
Jun 15, 6:44 PM CDT	Severe Thunderstorm Warning	EWX	Lavaca	61 min

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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.