Alert archive / Texas / Flash Flood Warnings in 1999
Flash Flood Warning 27, NWS Austin/San Antonio, TX
NWS Austin/San Antonio, TX issued this flash flood warning at May 11, 1999, 10:03 PM CDT for Kerr County, Texas. It was in force for 3 hr. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- May 11, 1999, 10:03 PM CDT (03:03 UTC)
- Expired
- May 12, 1999, 1:00 AM CDT
- In force
- 3 hr
- Issued by
- NWS Austin/San Antonio, TX
- Area
- Whole counties
County Kerr County, TX
The radar
The Laughlin AFB radar (KDFX), 126 km from the middle of the area, began a volume at 03:06 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.
The nearest sounding before it
Del Rio, TX (KDRT), launched 00:00Z, 3.1 hours before the alert went out and 163 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
- 3001 J/kg
- Mixed-layer CIN
- -32 J/kg
- Mixed-layer LCL
- 1924 m above ground
- 0-6 km bulk shear
- 39 kt
- 0-1 km storm-relative helicity
- 3 m²/s²
- 0-3 km storm-relative helicity
- 148 m²/s²
- Significant tornado parameter
- 0.1
- Supercell composite
- 5.5
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KSAT 120303 FFWSAT TXC265-120600- BULLETIN - EAS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX 1003 PM CDT TUE MAY 11 1999 THE NATIONAL WEATHER SERVICE IN AUSTIN/SAN ANTONIO HAS ISSUED A * FLASH FLOOD WARNING FOR... KERR COUNTY IN TEXAS * UNTIL 100 AM CDT * AT 1000 PM CDT A LINE OF STRONG THUNDERSTORMS EXTENDED WEST TO EAST ACROSS KERR COUNTY...SAGGING SLOWLY SOUTHWARD. HOURLY RAINS OF 1 1/2 TO 2/12 INCHES WHERE OCCURING. WITH THE SLOW MOVENENT OF THE THUNDERSTORMS...RAIN WILL CONTINUE AND MOST WATER WILL RUNOFF. SMALL CREEKS AND LOW WATER CROSSINGS WILL FLOOD. MOVE TO HIGHER GROUND IF FLOOD WATERS THREATEN AND DON'T DRIVE INTO WATER THAT CROSSES THE ROAD! . MSF
What forecasters said that day
The local office's own words before this flash flood 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 11, 6:00 PM CDT, 4 hours 3 minutes before
TXZ171-172-183>190-121100- HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX 600 PM CDT TUE MAY 11 1999 ...TORNADO WATCH IN EFFECT TIL 10 PM FOR CENTRAL AND SOUTH CENTRAL TEXAS... ...FLASH FLOOD WATCH IN EFFECT TONIGHT FOR THE TEXAS HILL COUNTRY AND MUCH OF SOUTH CENTRAL TEXAS... HAZARDOUS WEATHER IS EXPECTED TONIGHT AND WEDNESDAY. A MOIST AND UNSTABLE AIRMASS REMAINS OVER SOUTH CENTRAL TEXAS AND THE HILL COUNTRY. STRONG TO SEVERE THUNDERSTORMS ARE EXPECTED TO MOVE INTO THE HILL COUNTRY AND SOUTH CENTRAL TEXAS THIS EVENING AND TONIGHT. THE TORNADO WATCH FOR CENTRAL AND SOUTH CENTRAL TEXAS MEANS CONDITIONS ARE FAVORABLE FOR TORNADOES AND SEVERE THUNDERSTORMS. TORNADOES...HAIL TO THREE INCHES IN DIAMETER...STRONG GUSTY WINDS TO 80 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE. THE FLASH FLOOD WATCH FOR THE HILL COUNTRY AND MUCH OF SOUTH CENTRAL TEXAS MEANS THIS AREA WILL RECEIVE AN ADDITIONAL ONE TO THREE INCHES OF RAIN WITH ISOLATED AMOUNTS UP TO FIVE INCHES POSSIBLE. THIS AREA HAS ALREADY RECEIVED HEAVY RAINFALL FROM THE STORMS SUNDAY NIGHT AND MONDAY. THE ADDITIONAL HEAVY RAINFALL ACROSS THE WATCH AREA WILL RESULT IN RAPID RUNOFF AND FLASH FLOODING. RESIDENTS IN THE WATCH AREA SHOULD MONITOR THE LATEST WEATHER DEVELOPMENTS CONCERNING THIS HEAVY RAINFALL EVENT. STAY INFORMED OF THE WEATHER AND RIVER FORECASTS AND BULLETINS...AND BE READY TO TAKE IMMEDIATE ACTION TO SAFEGUARD LIFE AND PROPERTY IF FLASH FLOODING OR VERY HEAVY RAINFALL IS OBSERVED... OR IF A WARNING IS ISSUED. IF YOU ARE IN A VEHICLE...DO NOT ATTEMPT TO DRIVE ACROSS FLOODED ROADWAYS STAY TUNED TO NOAA WEATHER RADIO...COMMERCIAL RADIO OR TELEVISION STATIONS...OR YOUR CABLE TELEVISION PROVIDER FOR LATER STATEMENTS CONCERNING THIS DANGEROUS SEVERE WEATHER AND FLASH FLOOD THREATS. LAW ENFORCEMENT AGENCIES...EMERGENCY MANAGEMENT OFFICIALS...STORM SPOTTER GROUPS...AND OTHER INTERESTED CONCERNS SHOULD MONITOR THIS SITUATION AND TAKE APPROPRIATE ACTION SHOULD SEVERE WEATHER THREATEN YOUR AREA.
Special weather statement, May 11, 9:30 PM CDT, 33 minutes before
TXZ171-172-183>190-121100- HAZARDOUS WEATHER OUTLOOK...UPDATE NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX 930 PM CDT TUE MAY 11 1999 ...TORNADO WATCH IN EFFECT TIL 12 MIDNIGHT FOR ALL THE TEXAS HILL COUNTRY AND MOST OF SOUTH CENTRAL TEXAS... ...FLASH FLOOD WATCH IN EFFECT TONIGHT FOR THE TEXAS HILL COUNTRY AND MUCH OF SOUTH CENTRAL TEXAS... HAZARDOUS WEATHER IS OCCURRING OVER THE TEXAS HILL COUNTRY AND IS EXPECTED THROUGHOUT THE NIGHT AREAWIDE. A MOIST AND UNSTABLE AIRMASS REMAINS OVER SOUTH CENTRAL TEXAS AND THE HILL COUNTRY. STRONG TO SEVERE THUNDERSTORMS WILL CONTINUE TO MOVE SLOWLY SOUTHEAST THROUGH THE HILL COUNTRY AND SOUTH CENTRAL TEXAS TONIGHT. THE TORNADO WATCH FOR THE HILL COUNTRY AND MOST OF SOUTH CENTRAL TEXAS MEANS CONDITIONS ARE FAVORABLE FOR TORNADOES AND SEVERE THUNDERSTORMS. TORNADOES...HAIL TO THREE INCHES IN DIAMETER...STRONG GUSTY WINDS TO 80 MPH...AND DANGEROUS LIGHTNING WILL CONTINUE TO BE VERY POSSIBLE. THE FLASH FLOOD WATCH FOR THE HILL COUNTRY AND MUCH OF SOUTH CENTRAL TEXAS MEANS THIS AREA WILL RECEIVE AN ADDITIONAL ONE TO THREE INCHES OF RAIN WITH ISOLATED AMOUNTS UP TO FIVE INCHES POSSIBLE. THIS AREA HAS ALREADY RECEIVED HEAVY RAINFALL FROM THE STORMS SUNDAY NIGHT AND MONDAY. THE ADDITIONAL HEAVY RAINFALL ACROSS THE WATCH AREA WILL RESULT IN RAPID RUNOFF AND FLASH FLOODING. RESIDENTS IN THE WATCH AREA SHOULD MONITOR THE LATEST WEATHER DEVELOPMENTS CONCERNING THIS HEAVY RAINFALL EVENT. STAY INFORMED OF THE WEATHER AND RIVER FORECASTS AND BULLETINS...AND BE READY TO TAKE IMMEDIATE ACTION TO SAFEGUARD LIFE AND PROPERTY IF FLASH FLOODING OR VERY HEAVY RAINFALL IS OBSERVED... OR IF A WARNING IS ISSUED. IF YOU ARE IN A VEHICLE...DO NOT ATTEMPT TO DRIVE ACROSS FLOODED ROADWAYS STAY TUNED TO NOAA WEATHER RADIO...COMMERCIAL RADIO OR TELEVISION STATIONS...OR YOUR CABLE TELEVISION PROVIDER FOR LATER STATEMENTS CONCERNING THIS DANGEROUS SEVERE WEATHER AND FLASH FLOOD THREATS. LAW ENFORCEMENT AGENCIES...EMERGENCY MANAGEMENT OFFICIALS...STORM SPOTTER GROUPS...AND OTHER INTERESTED CONCERNS SHOULD MONITOR THIS SITUATION AND TAKE APPROPRIATE ACTION SHOULD SEVERE WEATHER THREATEN YOUR AREA.
Special weather statement, May 11, 9:30 PM CDT, 33 minutes before
TXZ171-172-183>190-121100- HAZARDOUS WEATHER OUTLOOK...UPDATE NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX 930 PM CDT TUE MAY 11 1999 ...TORNADO WATCH IN EFFECT TIL 12 MIDNIGHT FOR ALL THE TEXAS HILL COUNTRY AND MOST OF SOUTH CENTRAL TEXAS... ...FLASH FLOOD WATCH IN EFFECT TONIGHT FOR THE TEXAS HILL COUNTRY AND MUCH OF SOUTH CENTRAL TEXAS... HAZARDOUS WEATHER IS OCCURRING OVER THE TEXAS HILL COUNTRY AND IS EXPECTED THROUGHOUT THE NIGHT AREAWIDE. A MOIST AND UNSTABLE AIRMASS REMAINS OVER SOUTH CENTRAL TEXAS AND THE HILL COUNTRY. STRONG TO SEVERE THUNDERSTORMS WILL CONTINUE TO MOVE SLOWLY SOUTHEAST THROUGH THE HILL COUNTRY AND SOUTH CENTRAL TEXAS TONIGHT. THE TORNADO WATCH FOR THE HILL COUNTRY AND MOST OF SOUTH CENTRAL TEXAS MEANS CONDITIONS ARE FAVORABLE FOR TORNADOES AND SEVERE THUNDERSTORMS. TORNADOES...HAIL TO THREE INCHES IN DIAMETER...STRONG GUSTY WINDS TO 80 MPH...AND DANGEROUS LIGHTNING WILL CONTINUE TO BE VERY POSSIBLE. THE FLASH FLOOD WATCH FOR THE HILL COUNTRY AND MUCH OF SOUTH CENTRAL TEXAS MEANS THIS AREA WILL RECEIVE AN ADDITIONAL ONE TO THREE INCHES OF RAIN WITH ISOLATED AMOUNTS UP TO FIVE INCHES POSSIBLE. THIS AREA HAS ALREADY RECEIVED HEAVY RAINFALL FROM THE STORMS SUNDAY NIGHT AND MONDAY. THE ADDITIONAL HEAVY RAINFALL ACROSS THE WATCH AREA WILL RESULT IN RAPID RUNOFF AND FLASH FLOODING. RESIDENTS IN THE WATCH AREA SHOULD MONITOR THE LATEST WEATHER DEVELOPMENTS CONCERNING THIS HEAVY RAINFALL EVENT. STAY INFORMED OF THE WEATHER AND RIVER FORECASTS AND BULLETINS...AND BE READY TO TAKE IMMEDIATE ACTION TO SAFEGUARD LIFE AND PROPERTY IF FLASH FLOODING OR VERY HEAVY RAINFALL IS OBSERVED... OR IF A WARNING IS ISSUED. IF YOU ARE IN A VEHICLE...DO NOT ATTEMPT TO DRIVE ACROSS FLOODED ROADWAYS STAY TUNED TO NOAA WEATHER RADIO...COMMERCIAL RADIO OR TELEVISION STATIONS...OR YOUR CABLE TELEVISION PROVIDER FOR LATER STATEMENTS CONCERNING THIS DANGEROUS SEVERE WEATHER AND FLASH FLOOD THREATS. LAW ENFORCEMENT AGENCIES...EMERGENCY MANAGEMENT OFFICIALS...STORM SPOTTER GROUPS...AND OTHER INTERESTED CONCERNS SHOULD MONITOR THIS SITUATION AND TAKE APPROPRIATE ACTION SHOULD SEVERE WEATHER THREATEN YOUR AREA.
The office that day
Everything else NWS Austin/San Antonio, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 11, 7:03 PM CDT | Tornado Warning | EWX | Llano | 62 min |
| May 11, 7:22 PM CDT | Severe Thunderstorm Warning | EWX | Gillespie | 63 min |
| May 11, 7:28 PM CDT | Tornado Warning | EWX | Gillespie | 62 min |
| May 11, 8:14 PM CDT | Flash Flood Warning | EWX | Gillespie | 3 hr |
| May 11, 8:14 PM CDT | Flash Flood Warning | EWX | Burnet | 3 hr |
| May 11, 8:26 PM CDT | Tornado Warning | EWX | Gillespie | 64 min |
| May 11, 8:29 PM CDT | Tornado Warning | EWX | Burnet | 61 min |
| May 11, 8:34 PM CDT | Severe Thunderstorm Warning | EWX | Kerr | 61 min |
| May 11, 8:50 PM CDT | Severe Thunderstorm Warning | EWX | Williamson | 60 min |
| May 11, 9:16 PM CDT | Flash Flood Warning | EWX | Williamson | 3 hr |
| May 11, 9:35 PM CDT | Severe Thunderstorm Warning | EWX | Kerr | 60 min |
| May 11, 9:39 PM CDT | Severe Thunderstorm Warning | EWX | Real | 2 hr |
| May 11, 9:57 PM CDT | Severe Thunderstorm Warning | EWX | Kinney, Maverick | 63 min |
| May 11, 10:20 PM CDT | Severe Thunderstorm Warning | EWX | Bandera | 70 min |
| May 11, 10:56 PM CDT | Severe Thunderstorm Warning | EWX | Real | 34 min |
| May 11, 11:03 PM CDT | Severe Thunderstorm Warning | EWX | Kinney | 62 min |
| May 11, 11:14 PM CDT | Severe Thunderstorm Warning | EWX | Uvalde | 61 min |
| May 11, 11:26 PM CDT | Severe Thunderstorm Warning | EWX | Val Verde | 79 min |
| May 11, 11:31 PM CDT | Severe Thunderstorm Warning | EWX | Medina | 64 min |
| May 11, 11:56 PM CDT | Flash Flood Warning | EWX | Kinney, Maverick | 4 hr |
| May 12, 12:03 AM CDT | Severe Thunderstorm Warning | EWX | Kinney | 57 min |
| May 12, 12:15 AM CDT | Severe Thunderstorm Warning | EWX | Uvalde | 60 min |
| May 12, 12:31 AM CDT | Severe Thunderstorm Warning | EWX | Medina | 59 min |
| May 12, 12:35 AM CDT | Flash Flood Warning | EWX | Medina, Uvalde | 3 hr |
| May 12, 12:49 AM CDT | Severe Thunderstorm Warning | EWX | Zavala | 91 min |
| May 12, 1:10 AM CDT | Severe Thunderstorm Warning | EWX | Maverick | 65 min |
| May 12, 1:20 AM CDT | Severe Thunderstorm Warning | EWX | Frio | 80 min |
| May 12, 3:59 AM CDT | Severe Thunderstorm Warning | EWX | Karnes | 61 min |
| May 12, 4:51 AM CDT | Flash Flood Warning | EWX | DeWitt, Karnes | 2 hr |
Nearby
Flash Flood Warnings in Texas, 1999Every flash flood warning in 1999
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.