Alert archive / Texas / Severe Thunderstorm Warnings in 1998
Severe Thunderstorm Warning 133, NWS Austin/San Antonio, TX
NWS Austin/San Antonio, TX issued this severe thunderstorm warning at Mar 16, 1998, 3:01 AM CST for Guadalupe County, Hays 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
- Mar 16, 1998, 3:01 AM CST (09:01 UTC)
- Expired
- Mar 16, 1998, 4:00 AM CST
- In force
- 59 min
- Issued by
- NWS Austin/San Antonio, TX
- Area
- Whole counties
Counties Guadalupe County, TX, Hays County, TX
The radar
The Austin/San Antonio radar (KEWX), 13 km from the middle of the area, began a volume at 09:00 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 |
|---|---|---|---|
| Mar 16, 3:20 AM CST | Thunderstorm Wind | Staples, TX | a trailer was badly damaged by severe thunderstorm winds near Staples. |
| Mar 16, 3:25 AM CST | Thunderstorm Wind | San Marcos, TX | Widespread damage was reported to trees and signs in and around San Marcos. Winds were estimated in excess of 60 kts by observers. |
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 |
|---|---|---|---|
| Mar 16, 1:30 AM CST | Tornado Watch | SPC | 6 hr |
The nearest sounding before it
Corpus Christi, TX (KCRP), launched 00:00Z, 9.0 hours before the alert went out and 241 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
- 972 J/kg
- Mixed-layer CIN
- -106 J/kg
- Mixed-layer LCL
- 537 m above ground
- 0-6 km bulk shear
- 47 kt
- 0-1 km storm-relative helicity
- 222 m²/s²
- 0-3 km storm-relative helicity
- 356 m²/s²
- Significant tornado parameter
- 1.0
- Supercell composite
- 3.7
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KSAT 160901 RRA SVRSAT TXC187-209-493-161000- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX 301 AM CST MON MAR 16 1998 THE NATIONAL WEATHER SERVICE IN AUSTIN/SAN ANTONIO HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 400 AM CST FOR PEOPLE IN THE FOLLOWING LOCATIONS... IN SOUTH CENTRAL TEXAS ...GUADALUPE COUNTY...HAYS COUNTY...WILSON COUNTY NATIONAL WEATHER SERVICE RADAR INDICATED SEVERE THUNDERSTORMS FROM WESTERN HAYS COUNTY SOUTHWARD TO NEAR THE COMAL GUADALUPE COUNTY LINE AND INTO WILSON COUNTY...MOVING EAST AT 20 MPH. ALTHOUGH NO TORNADOES HAVE BEEN DETECTED WITH THIS STORM...A TORNADO WATCH REMAINS IN EFFECT. SEVERE THUNDERSTORMS CAN AND OCCASIONALLY DO PRODUCE TORNADOES WITH LITTLE OR NO ADVANCE WARNING SO BE ON THE LOOKOUT. SEVERE THUNDERSTORM WINDS CAN REACH SPEEDS OVER 60 MPH. THESE WINDS BLOW DOWN TREES...POWER LINES...AND SEVERELY DAMAGE MOBILBE HOMES... SOMETIMES BUILDINGS. VERY LARGE HAIL CAN INJURE ANYONE CAUGHT OUTSIDE.
The office that day
Everything else NWS Austin/San Antonio, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 15, 7:57 PM CST | Flash Flood Warning | EWX | Val Verde | 2 hr |
| Mar 15, 8:45 PM CST | Flash Flood Warning | EWX | Edwards | 3 hr |
| Mar 15, 11:44 PM CST | Flash Flood Warning | EWX | Dimmit, Zavala | 3 hr |
| Mar 15, 11:53 PM CST | Severe Thunderstorm Warning | EWX | Zavala | 67 min |
| Mar 16, 12:28 AM CST | Severe Thunderstorm Warning | EWX | Frio | 62 min |
| Mar 16, 12:46 AM CST | Flash Flood Warning | EWX | Bandera, Bexar, Frio, Medina | 3 hr |
| Mar 16, 12:46 AM CST | Flash Flood Warning | EWX | Gillespie, Kendall, Kerr | 3 hr |
| Mar 16, 12:46 AM CST | Flash Flood Warning | EWX | Blanco, Comal | 3 hr |
| Mar 16, 12:46 AM CST | Flash Flood Warning | EWX | Burnet, Llano | 3 hr |
| Mar 16, 1:31 AM CST | Severe Thunderstorm Warning | EWX | Atascosa | 59 min |
| Mar 16, 2:32 AM CST | Severe Thunderstorm Warning | EWX | Comal | 58 min |
| Mar 16, 3:01 AM CST | Severe Thunderstorm Warning | EWX | Wilson | 59 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.