Alert archive / Texas / Tornado Warnings in 1998
Tornado Warning 17, NWS Austin/San Antonio, TX
NWS Austin/San Antonio, TX issued this tornado warning at Mar 7, 1998, 5:08 PM CST for Blanco County, Texas. It was in force for 52 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 7, 1998, 5:08 PM CST (23:08 UTC)
- Expired
- Mar 7, 1998, 6:00 PM CST
- In force
- 52 min
- Issued by
- NWS Austin/San Antonio, TX
- Area
- Whole counties
County Blanco County, TX
The radar
The Austin/San Antonio radar (KEWX), 72 km from the middle of the area, began a volume at 23:12 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 7, 5:15 PM CST | Hail 0.75 | Round Mtn, TX | |
| Mar 7, 5:15 PM CST | Hail 0.75 | Johnson City, 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 nearest sounding before it
Del Rio, TX (KDRT), launched 12:00Z, 11.1 hours before the alert went out and 256 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
- 28 J/kg
- Mixed-layer CIN
- -414 J/kg
- Mixed-layer LCL
- 527 m above ground
- 0-6 km bulk shear
- 68 kt
- 0-1 km storm-relative helicity
- 254 m²/s²
- 0-3 km storm-relative helicity
- 251 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.5
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KSAT 072308 RRA TORSAT TXC031-080000- BULLETIN - EAS ACTIVATION REQUESTED TORNADO WARNING NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX 508 PM CST SAT MAR 7 1998 THE NATIONAL WEATHER SERVICE IN AUSTIN/SAN ANTONIO HAS ISSUED A TORNADO WARNING EFFECTIVE UNTIL 600 PM CST FOR PEOPLE IN THE FOLLOWING LOCATION... IN SOUTH CENTRAL TEXAS ...BLANCO COUNTY AT 505 PM NATIONAL WEATHER SERVICE RADAR INDICATED A TORNADO ABOUT 10 MILES NORTHWEST OF JOHNSON CITY. THE STORM IS MOVING EAST AT 30 MILES AN HOUR. PEOPLE IN OR NEAR THE PATH OF THIS STORM SHOULD TAKE IMMEDIATE ACTION TO PROTECT THEIR LIVES. GO TO THE CENTER ON THE LOWEST FLOOR OF YOUR BUILDING...COVER YOUR HEAD. STAY AWAY FROM DOORS AND WINDOWS. DO NOT STAY IN MOBILE HOMES OR VEHICLES...GET INTO A STURDY BUILDING.
The office that day
Everything else NWS Austin/San Antonio, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 7, 4:04 PM CST | Severe Thunderstorm Warning | EWX | Llano | 56 min |
| Mar 7, 4:13 PM CST | Severe Thunderstorm Warning | EWX | Gillespie | 62 min |
| Mar 7, 4:39 PM CST | Tornado Warning | EWX | Llano | 51 min |
| Mar 7, 4:51 PM CST | Severe Thunderstorm Warning | EWX | Burnet | 69 min |
| Mar 7, 5:01 PM CST | Severe Thunderstorm Warning | EWX | Blanco | 44 min |
| Mar 7, 5:35 PM CST | Severe Thunderstorm Warning | EWX | Hays, Travis | 40 min |
Nearby
Tornado Warnings in Texas, 1998Every tornado warning in 1998Tornadoes 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.