Alert archive / Texas / Severe Thunderstorm Warnings in 1998
Severe Thunderstorm Warning 140, NWS Austin/San Antonio, TX
NWS Austin/San Antonio, TX issued this severe thunderstorm warning at Apr 8, 1998, 3:46 AM CDT for Travis County, Williamson County, Texas. It was in force for 59 min. 2 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
- Apr 8, 1998, 3:46 AM CDT (08:46 UTC)
- Expired
- Apr 8, 1998, 4:45 AM CDT
- In force
- 59 min
- Issued by
- NWS Austin/San Antonio, TX
- Area
- Whole counties
Counties Travis County, TX, Williamson County, TX
The radar
The Ft Hood radar (KGRK), 39 km from the middle of the area, began a volume at 08:49 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
| Time | Report | Where | Remark |
|---|---|---|---|
| Apr 8, 4:00 AM CDT | Hail 0.75 | Jarrell, TX | |
| Apr 8, 4:00 AM CDT | Thunderstorm Wind | Jarrell, 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 |
|---|---|---|---|
| Apr 8, 1:30 AM CDT | Severe Thunderstorm Watch | SPC | 5 hr |
The nearest sounding before it
Fort Worth, TX (KFWD), launched 00:00Z, 8.8 hours before the alert went out and 263 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.
- Mixed-layer CAPE
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 3263 m above ground
- 0-6 km bulk shear
- 62 kt
- 0-1 km storm-relative helicity
- 16 m²/s²
- 0-3 km storm-relative helicity
- 129 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
229 WUUS1 KSAT 080852 RRA SVRSAT TXC453-491-080945- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX 346 AM CDT WED APR 8 1998 THE NATIONAL WEATHER SERVICE IN AUSTIN/SAN ANTONIO HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 445 AM CDT FOR PEOPLE IN THE FOLLOWING LOCATIONS... IN SOUTH CENTRAL TEXAS ...TRAVIS COUNTY...WILLIAMSON COUNTY A LINE OF SEVERE THUNDERSTORMS WILL BE MOVING INTO WESTERN WILLIAMSON COUNTY AND NORTHWESTERN TRAVIS COUNTY BY AROUND 400 AM. THESE THUNDERSTORMS ARE MOVING EAST AT 40 MPH. THE STORMS HAVE A HISTORY OF PRODUCING UP TO GOLF BALL-SIZE HAIL IN BURNET COUNTY. PEOPLE IN THE PATH OF THIS STORM SHOULD BE ALERT TO THE POSSIBILITY OF LARGE HAIL AND DAMAGING WINDS. FREQUENT LIGHTNING AND LOCALLY HEAVY RAIN CAN ALSO OCCUR WITH SEVERE THUNDERSTORMS...FLOODING SMALL STREAMS...LOW AREAS...AND LOW WATER CROSSINGS. &
The office that day
Everything else NWS Austin/San Antonio, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 8, 2:57 AM CDT | Severe Thunderstorm Warning | EWX | Gillespie, Llano | 2 hr |
| Apr 8, 3:28 AM CDT | Severe Thunderstorm Warning | EWX | Burnet | 62 min |
| Apr 8, 4:11 AM CDT | Severe Thunderstorm Warning | EWX | Blanco | 64 min |
| Apr 8, 4:30 AM CDT | Severe Thunderstorm Warning | EWX | Comal, Hays | 60 min |
| Apr 8, 4:45 AM CDT | Tornado Warning | EWX | Hays, Travis | 60 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.