Alert archive / Texas / Severe Thunderstorm Warnings in 1997
Severe Thunderstorm Warning 117, NWS Austin/San Antonio, TX
NWS Austin/San Antonio, TX issued this severe thunderstorm warning at May 30, 1997, 11:27 PM CDT for Gillespie County, Texas. It was in force for 63 min. 1 report 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
- May 30, 1997, 11:27 PM CDT (04:27 UTC)
- Expired
- May 31, 1997, 12:30 AM CDT
- In force
- 63 min
- Issued by
- NWS Austin/San Antonio, TX
- Area
- Whole counties
County Gillespie County, TX
The radar
The Austin/San Antonio radar (KEWX), 112 km from the middle of the area, began a volume at 04:30 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 |
|---|---|---|---|
| May 30, 11:40 PM CDT | Hail 0.75 | Cherry Spg, 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 00:00Z, 4.5 hours before the alert went out and 211 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
- 3508 J/kg
- Mixed-layer CIN
- -71 J/kg
- Mixed-layer LCL
- 1339 m above ground
- 0-6 km bulk shear
- 40 kt
- 0-1 km storm-relative helicity
- 68 m²/s²
- 0-3 km storm-relative helicity
- 174 m²/s²
- Significant tornado parameter
- 1.7
- Supercell composite
- 16.6
The text
As transmitted, in the capitals the NWS used until 2016.
303 WUUS1 KSAT 310426 RRA SVRSAT TXC171-310530- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX 1127 PM CDT FRI MAY 30 1997 THE NATIONAL WEATHER SERVICE IN AUSTIN/SAN ANTONIO HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 1230 AM CDT FOR PEOPLE IN THE FOLLOWING LOCATION... IN SOUTH CENTRAL TEXAS ...GILLESPIE COUNTY DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM NEAR CHERRY SPRING. THIS STORM IS MOVING SOUTH AT 15 MPH AND WILL CROSS FARM ROAD 648 AND U.S. HIGHWAY 87 HEADING TOWARD U.S. 290 WEST OF FREDERICKSBURG. 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.
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, May 30, 5:59 PM CDT, 5 hours 28 minutes before
TXZ171>173-183>194-202>209-217>225-228-311100- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX 600 PM CDT FRI MAY 30 1997 THERE IS A RISK OF SEVERE THUNDERSTORMS ACROSS MUCH OF THE HILL COUNTRY AND NORTHERN PORTIONS OF SOUTH CENTRAL TEXAS TONIGHT. THUNDERSTORMS ARE EXPECTED TO CONTINUE TO DEVELOP AND BUILD SOUTHWARD ACROSS THE RISK AREA TONIGHT AND EARLY SATURDAY MORNING. LARGE HAIL... DAMAGING WINDS...BRIEF HEAVY RAINS..FREQUENT LIGHTNING AND ISOLATED TORNADOES ARE POSSIBLE WITH SOME OF THESE THUNDERSTORMS. THE AIRMASS ACROSS SOUTH CENTRAL TEXAS REMAINS MOIST AND HIGHLY UNSTABLE. OUTFLOW FROM DEVELOPING THUNDERSTORMS COULD LIKELY RESULT IN A RAPID DEVELOPMENT OF FURTHER STORMS ALONG THE OUTFLOW WHICH IN THIS AIRMASS..COULD REACH SEVERE LIMITS RATHER QUICKLY. RAINFALL AMOUNTS FROM THE SCATTERED SHOWERS AND THUNDERSTORMS TONIGHT WILL RESULT IN AVERAGE AMOUNTS BETWEEN A QUARTER AND ONE HALF INCH WITH BRIEF HEAVY RAINS OF 1 TO 2 INCHES POSSIBLE IN SOME OF THE STRONGER THUNDERSTORMS. THE THREAT OF SEVERE WEATHER SHOULD END ACROSS SOUTH CENTRAL TEXAS SATURDAY AS AN UPPER LEVEL RIDGE BUILDS OVER THE AREA. THE HAZARDOUS WEATHER OUTLOOK NORMALLY WILLB BE UPDATED BY MEANS OF THE ZONE FORECASTS..SHORT TERM FORECASTS..WATCHES..WARNINGS AND ADVISORIES. THE HAZARDOUS WEATHER OUTLOOK ITSELF WILL BE UPDATED ONLY IF UNFORECAST WEATHER DEVELOPS OR IF FORECAST HAZARDOUS WEATHER NO LONGER IS EXPECTED.
Special weather statement, May 30, 6:00 PM CDT, 5 hours 27 minutes before
TXZ171>173-183>194-202>209-217>225-228-311100- HAZARDOUS WEATHER OUTLOOK...CORRECTION FOR HEADING NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX 600 PM CDT FRI MAY 30 1997 THERE IS A RISK OF SEVERE THUNDERSTORMS ACROSS MUCH OF THE HILL COUNTRY AND NORTHERN PORTIONS OF SOUTH CENTRAL TEXAS TONIGHT. THUNDERSTORMS ARE EXPECTED TO CONTINUE TO DEVELOP AND BUILD SOUTHWARD ACROSS THE RISK AREA TONIGHT AND EARLY SATURDAY MORNING. LARGE HAIL... DAMAGING WINDS...BRIEF HEAVY RAINS..FREQUENT LIGHTNING AND ISOLATED TORNADOES ARE POSSIBLE WITH SOME OF THESE THUNDERSTORMS. THE AIRMASS ACROSS SOUTH CENTRAL TEXAS REMAINS MOIST AND HIGHLY UNSTABLE. OUTFLOW FROM DEVELOPING THUNDERSTORMS COULD LIKELY RESULT IN A RAPID DEVELOPMENT OF FURTHER STORMS ALONG THE OUTFLOW WHICH IN THIS AIRMASS..COULD REACH SEVERE LIMITS RATHER QUICKLY. RAINFALL AMOUNTS FROM THE SCATTERED SHOWERS AND THUNDERSTORMS TONIGHT WILL RESULT IN AVERAGE AMOUNTS BETWEEN A QUARTER AND ONE HALF INCH WITH BRIEF HEAVY RAINS OF 1 TO 2 INCHES POSSIBLE IN SOME OF THE STRONGER THUNDERSTORMS. THE THREAT OF SEVERE WEATHER SHOULD END ACROSS SOUTH CENTRAL TEXAS SATURDAY AS AN UPPER LEVEL RIDGE BUILDS OVER THE AREA. THE HAZARDOUS WEATHER OUTLOOK NORMALLY WILL BE UPDATED BY MEANS OF THE ZONE FORECASTS..SHORT TERM FORECASTS..WATCHES..WARNINGS AND ADVISORIES. THE HAZARDOUS WEATHER OUTLOOK ITSELF WILL BE UPDATED ONLY IF UNFORECAST WEATHER DEVELOPS OR IF FORECAST HAZARDOUS WEATHER NO LONGER IS EXPECTED.
Special weather statement, May 30, 6:00 PM CDT, 5 hours 27 minutes before
TXZ171>173-183>194-202>209-217>225-228-311100- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX 600 PM CDT FRI MAY 30 1997 THERE IS A RISK OF SEVERE THUNDERSTORMS ACROSS MUCH OF THE HILL COUNTRY AND NORTHERN PORTIONS OF SOUTH CENTRAL TEXAS TONIGHT. THUNDERSTORMS ARE EXPECTED TO CONTINUE TO DEVELOP AND BUILD SOUTHWARD ACROSS THE RISK AREA TONIGHT AND EARLY SATURDAY MORNING. LARGE HAIL... DAMAGING WINDS...BRIEF HEAVY RAINS..FREQUENT LIGHTNING AND ISOLATED TORNADOES ARE POSSIBLE WITH SOME OF THESE THUNDERSTORMS. THE AIRMASS ACROSS SOUTH CENTRAL TEXAS REMAINS MOIST AND HIGHLY UNSTABLE. OUTFLOW FROM DEVELOPING THUNDERSTORMS COULD LIKELY RESULT IN A RAPID DEVELOPMENT OF FURTHER STORMS ALONG THE OUTFLOW WHICH IN THIS AIRMASS..COULD REACH SEVERE LIMITS RATHER QUICKLY. RAINFALL AMOUNTS FROM THE SCATTERED SHOWERS AND THUNDERSTORMS TONIGHT WILL RESULT IN AVERAGE AMOUNTS BETWEEN A QUARTER AND ONE HALF INCH WITH BRIEF HEAVY RAINS OF 1 TO 2 INCHES POSSIBLE IN SOME OF THE STRONGER THUNDERSTORMS. THE THREAT OF SEVERE WEATHER SHOULD END ACROSS SOUTH CENTRAL TEXAS SATURDAY AS AN UPPER LEVEL RIDGE BUILDS OVER THE AREA. THE HAZARDOUS WEATHER OUTLOOK NORMALLY WILL BE UPDATED BY MEANS OF THE ZONE FORECASTS..SHORT TERM FORECASTS..WATCHES..WARNINGS AND ADVISORIES. THE HAZARDOUS WEATHER OUTLOOK ITSELF WILL BE UPDATED ONLY IF UNFORECAST WEATHER DEVELOPS OR IF FORECAST HAZARDOUS WEATHER NO LONGER IS EXPECTED.
Special weather statement, May 30, 6:02 PM CDT, 5 hours 25 minutes before
TXZ171>173-183>194-202>209-217>225-228-311100- HAZARDOUS WEATHER OUTLOOK...CORRECTION FOR HEADING NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX 600 PM CDT FRI MAY 30 1997 THERE IS A RISK OF SEVERE THUNDERSTORMS ACROSS MUCH OF THE HILL COUNTRY AND NORTHERN PORTIONS OF SOUTH CENTRAL TEXAS TONIGHT. THUNDERSTORMS ARE EXPECTED TO CONTINUE TO DEVELOP AND BUILD SOUTHWARD ACROSS THE RISK AREA TONIGHT AND EARLY SATURDAY MORNING. LARGE HAIL... DAMAGING WINDS...BRIEF HEAVY RAINS..FREQUENT LIGHTNING AND ISOLATED TORNADOES ARE POSSIBLE WITH SOME OF THESE THUNDERSTORMS. THE AIRMASS ACROSS SOUTH CENTRAL TEXAS REMAINS MOIST AND HIGHLY UNSTABLE. OUTFLOW FROM DEVELOPING THUNDERSTORMS COULD LIKELY RESULT IN A RAPID DEVELOPMENT OF FURTHER STORMS ALONG THE OUTFLOW WHICH IN THIS AIRMASS..COULD REACH SEVERE LIMITS RATHER QUICKLY. RAINFALL AMOUNTS FROM THE SCATTERED SHOWERS AND THUNDERSTORMS TONIGHT WILL RESULT IN AVERAGE AMOUNTS BETWEEN A QUARTER AND ONE HALF INCH WITH BRIEF HEAVY RAINS OF 1 TO 2 INCHES POSSIBLE IN SOME OF THE STRONGER THUNDERSTORMS. THE THREAT OF SEVERE WEATHER SHOULD END ACROSS SOUTH CENTRAL TEXAS SATURDAY AS AN UPPER LEVEL RIDGE BUILDS OVER THE AREA. THE HAZARDOUS WEATHER OUTLOOK NORMALLY WILL BE UPDATED BY MEANS OF THE ZONE FORECASTS..SHORT TERM FORECASTS..WATCHES..WARNINGS AND ADVISORIES. THE HAZARDOUS WEATHER OUTLOOK ITSELF WILL BE UPDATED ONLY IF UNFORECAST WEATHER DEVELOPS OR IF FORECAST HAZARDOUS WEATHHER NO LONGER IS EXPECTED.
The office that day
Everything else NWS Austin/San Antonio, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 30, 8:57 PM CDT | Severe Thunderstorm Warning | EWX | Llano | 63 min |
| May 30, 9:13 PM CDT | Severe Thunderstorm Warning | EWX | Blanco | 62 min |
| May 30, 10:20 PM CDT | Severe Thunderstorm Warning | EWX | Kendall | 55 min |
| May 31, 3:01 AM CDT | Severe Thunderstorm Warning | EWX | Edwards, Real | 59 min |
| May 31, 4:15 AM CDT | Severe Thunderstorm Warning | EWX | DeWitt | 30 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.