Alert archive / Texas / Severe Thunderstorm Warnings in 1997
Severe Thunderstorm Warning 176, NWS Austin/San Antonio, TX
NWS Austin/San Antonio, TX issued this severe thunderstorm warning at Oct 23, 1997, 7:43 AM CDT for Blanco County, Gillespie County, Texas. It was in force for 62 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
- Oct 23, 1997, 7:43 AM CDT (12:43 UTC)
- Expired
- Oct 23, 1997, 8:45 AM CDT
- In force
- 62 min
- Issued by
- NWS Austin/San Antonio, TX
- Area
- Whole counties
Counties Blanco County, TX, Gillespie County, TX
The radar
The Austin/San Antonio radar (KEWX), 90 km from the middle of the area, began a volume at 12:47 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 |
|---|---|---|---|
| Oct 23, 8:00 AM CDT | Hail 0.75 | Stonewall, TX | |
| Oct 23, 8:15 AM CDT | Hail 0.88 | Hye, 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, 0.7 hours before the alert went out and 233 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
- 162 J/kg
- Mixed-layer CIN
- -119 J/kg
- Mixed-layer LCL
- 482 m above ground
- 0-6 km bulk shear
- 52 kt
- 0-1 km storm-relative helicity
- 270 m²/s²
- 0-3 km storm-relative helicity
- 381 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 2.2
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KSAT 231246 RRA SVRSAT TXC031-171-231345- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX 743 AM CDT THU OCT 23 1997 THE NATIONAL WEATHER SERVICE IN AUSTIN/SAN ANTONIO HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 845 AM CDT FOR PEOPLE IN THE FOLLOWING LOCATIONS... IN SOUTH CENTRAL TEXAS ...BLANCO COUNTY...EAST CENTRAL GILLESPIE COUNTY A FAST MOVING SEVERE THUNDERSTORM WAS MOVING INTO SOUTHEAST GILLESPIE COUNTY NEAR LUCKENBACH AND SOUTHERN BLANCO COUNTY. THIS STORM HAS HAD HISTORY OF PRODUCING LARGE HAIL IN KERR COUNTY DURING THE PAST HOUR. THE STORM WAS MOVING NORTHEAST AT 40 MPH. SEVERE THUNDERSTORM WINDS CAN REACH SPEEDS OVER 60 MPH. THESE WINDS BLOW DOWN TREES...POWER LINES...AND SEVERELY DAMAGE MOBILE HOMES... SOMETIMES BUILDINGS. VERY LARGE HAIL CAN INJURE ANYONE CAUGHT OUTSIDE. IF YOU SEE SEVERE WEATHER TAKING PLACE...CALL YOUR REPORT TO THE NEAREST LAW ENFORCEMENT AGENCY FOR IMMEDIATE RELAY TO THE NATIONAL WEATHER SERVICE.
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
Special weather statement, Oct 23, 5:41 AM CDT, 2 hours 2 minutes before
TXZ171>173-183>194-202>209-217>225-228-232300- HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX 600 AM CDT THU OCT 23 1997 THERE IS A SLIGHT RISK OF SEVERE WEATHER TODAY GENERALLY EAST OF A LINE FROM BURNET TO SAN ANTONIO TO KARNES CITY. THERE IS A MODERATE RISK OF SEVERE WEATHER GENERALLY EAST OF A LINE FROM GEORGETOWN TO AUSTIN TO SAN MARCOS TO HALLETTSVILLE TODAY. A STRONG UPPER AIR DISTURBANCE IS FORECAST TO MOVE ACROSS CENTRAL TEXAS INTO NORTH TEXAS THIS AFTERNOON AS VERY MOIST AND UNSTABLE AIR FEEDS INTO SOUTH CENTRAL TEXAS FROM THE GULF OF MEXICO. STRONG DAMAGING WINDS...LARGE HAIL...AND EVEN ISOLATED TORNADOES ARE POSSIBLE WITH THE DEVELOPING THUNDERSTORMS ACROSS MAINLY THE NORTHEAST AND EASTERN SECTIONS OF SOUTH CENTRAL TEXAS TODAY. THE THREAT OF SEVERE WEATHER WILL END BY THE EVENING HOURS AS THE STRONG DISTURBANCE MOVES INTO EAST TEXAS AND MORE STABLE AIR MOVES IN FROM THE WEST. RAINFALL FROM THE SCATTERED SHOWERS AND THUNDERSTORMS TODAY WILL AVERAGE 1/4 TO 1/2 INCH WITH AMOUNTS OF 1 TO 2 INCHES POSSIBLE. NO SIGNIFICANT RAIN IS EXPECTED TONIGHT. NEARBY HAZARDOUS WEATHER OUTLOOKS INCLUDE: FOR SOUTHWEST TEXAS...FROM MIDLAND...LBBSPSMAF FOR THE CONCHO VALLEY...FROM SAN ANGELO...LBBSPSSJT FOR NORTH TEXAS...FROM FORT WORTH...FTWSPSFTW FOR SOUTHEAST TEXAS...FROM HOUSTON/GALVESTON...SATSPSHOU FOR COASTAL BEND/RIO GRANDE PLAINS...FROM CORPUS CHRISTI...SATSPSCRP. THE HAZARDOUS WEATHER OUTLOOK NORMALLY WILL BE UPDATED BY MEANS OF THE ZONE FORECASTS...SHORT TERM FORECAST...WATCHES...WARNINGS AND ADVISORIES. THE HAZARDOUS WEATHER OUTLOOK ITSELF WILL BE UPDATED ONLY IF UNEXPECTED HAZARDOUS WEATHER DEVELOPS OR IF EXPECTED HAZARDOUS WEATHER NO LONGER IS FORECAST TO DEVELOP.
Special weather statement, Oct 23, 6:00 AM CDT, 1 hour 43 minutes before
TXZ171>173-183>194-202>209-217>225-228-232300- HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX 600 AM CDT THU OCT 23 1997 THERE IS A SLIGHT RISK OF SEVERE WEATHER TODAY GENERALLY EAST OF A LINE FROM BURNET TO SAN ANTONIO TO KARNES CITY. THERE IS A MODERATE RISK OF SEVERE WEATHER GENERALLY EAST OF A LINE FROM GEORGETOWN TO AUSTIN TO SAN MARCOS TO HALLETTSVILLE TODAY. A STRONG UPPER AIR DISTURBANCE IS FORECAST TO MOVE ACROSS CENTRAL TEXAS INTO NORTH TEXAS THIS AFTERNOON AS VERY MOIST AND UNSTABLE AIR FEEDS INTO SOUTH CENTRAL TEXAS FROM THE GULF OF MEXICO. STRONG DAMAGING WINDS...LARGE HAIL...AND EVEN ISOLATED TORNADOES ARE POSSIBLE WITH THE DEVELOPING THUNDERSTORMS ACROSS MAINLY THE NORTHEAST AND EASTERN SECTIONS OF SOUTH CENTRAL TEXAS TODAY. THE THREAT OF SEVERE WEATHER WILL END BY THE EVENING HOURS AS THE STRONG DISTURBANCE MOVES INTO EAST TEXAS AND MORE STABLE AIR MOVES IN FROM THE WEST. RAINFALL FROM THE SCATTERED SHOWERS AND THUNDERSTORMS TODAY WILL AVERAGE 1/4 TO 1/2 INCH WITH AMOUNTS OF 1 TO 2 INCHES POSSIBLE. NO SIGNIFICANT RAIN IS EXPECTED TONIGHT. NEARBY HAZARDOUS WEATHER OUTLOOKS INCLUDE: FOR SOUTHWEST TEXAS...FROM MIDLAND...LBBSPSMAF FOR THE CONCHO VALLEY...FROM SAN ANGELO...LBBSPSSJT FOR NORTH TEXAS...FROM FORT WORTH...FTWSPSFTW FOR SOUTHEAST TEXAS...FROM HOUSTON/GALVESTON...SATSPSHOU FOR COASTAL BEND/RIO GRANDE PLAINS...FROM CORPUS CHRISTI...SATSPSCRP. THE HAZARDOUS WEATHER OUTLOOK NORMALLY WILL BE UPDATED BY MEANS OF THE ZONE FORECASTS...SHORT TERM FORECAST...WATCHES...WARNINGS AND ADVISORIES. THE HAZARDOUS WEATHER OUTLOOK ITSELF WILL BE UPDATED ONLY IF UNEXPECTED HAZARDOUS WEATHER DEVELOPS OR IF EXPECTED HAZARDOUS WEATHER NO LONGER IS FORECAST TO DEVELOP.
The office that day
Everything else NWS Austin/San Antonio, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Oct 23, 8:29 AM CDT | Severe Thunderstorm Warning | EWX | Burnet, Travis, Williamson | 61 min |
Nearby
Severe Thunderstorm Warnings in Texas, 1997Every severe thunderstorm warning in 1997
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.