Alert archive / Texas / Flash Flood Warnings in 1999
Flash Flood Warning 19, NWS Austin/San Antonio, TX
NWS Austin/San Antonio, TX issued this flash flood warning at May 10, 1999, 12:25 AM CDT for Edwards 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 10, 1999, 12:25 AM CDT (05:25 UTC)
- Expired
- May 10, 1999, 3:25 AM CDT
- In force
- 3 hr
- Issued by
- NWS Austin/San Antonio, TX
- Area
- Whole counties
County Edwards County, TX
The radar
The Laughlin AFB radar (KDFX), 79 km from the middle of the area, began a volume at 05:27 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, 5.4 hours before the alert went out and 86 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
- 4039 J/kg
- Mixed-layer CIN
- -4 J/kg
- Mixed-layer LCL
- 1039 m above ground
- 0-6 km bulk shear
- 27 kt
- 0-1 km storm-relative helicity
- 91 m²/s²
- 0-3 km storm-relative helicity
- 172 m²/s²
- Significant tornado parameter
- 2.5
- Supercell composite
- 15.2
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KSAT 100524 FFWSAT TXC137-100825- BULLETIN - EAS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX 1225 AM CDT MON MAY 10 1999 THE NATIONAL WEATHER SERVICE IN AUSTIN/SAN ANTONIO HAS ISSUED A * FLASH FLOOD WARNING FOR... EDWARDS COUNTY IN TEXAS * UNTIL 325 AM CDT * AT 1220 AM CDT... NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A THUNDERSTORM WITH VERY HEAVY RAIN 20 MILES WEST OF ROCKSPRINGS. .. MOVING SLOWLY EAST. * RAINFALL RATES OF 2 TO 3 INCHES PER HOURS WILL PERSIST ACROSS RURAL AREAS OF EDWARDS COUNTY BETWEEN HIGHWAYS 55...377...AND 277 IN THE BUFFALO...WITTENBERG AND TURKEY DRAWS. BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE DANGERS OF FLOODS AND FLASH FLOODS. IF FLASH FLOODING IS OBSERVED... ACT QUICKLY. MOVE UP TO ESCAPE FLOOD WATERS. DO NOT STAY IN AREAS SUBJECT TO FLOODING WHEN WATER BEGINS RISING. IT IS VERY DIFFICULT AT NIGHT TO TELL HOW MUCH WATER IS ON ROADS. MOTORISTS SHOULD NOT DRIVE THROUGH WATER OF UNKNOWN DEPTH. PASHOS
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 9, 8:15 PM CDT, 4 hours 10 minutes before
TXZ171>173-183>194-202>209-217>225-228-101100- HAZARDOUS WEATHER OUTLOOK...UPDATE NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX 815 PM CDT SUN MAY 9 1999 ...A TORNADO WATCH IS IN EFFECT TIL 12 MIDNIGHT FOR THE COUNTIES OF VAL VERDE...KINNEY...AND EDWARDS... STRONG THUNDERSTORMS CONTINUE TO DEVELOP OVER SOUTHWEST TEXAS NEAR VAL VERDE COUNTY AND WILL MOVE EASTWARD TONIGHT. THE EXTREME WESTERN PORTIONS OF THE TEXAS HILL COUNTRY AND SOUTH CENTRAL TEXAS HAVE A CHANCE OF THUNDERSTORM DEVELOPMENT TONIGHT WITH SOME STORMS POSSIBLY SEVERE. COUNTIES IN THE WATCH AREA MAY HAVE THE DEVELOPMENT OF TORNADOES... HAIL TO THREE INCHES IN DIAMETER...STRONG THUNDERSTORM WIND GUSTS TO 70 MPH...AND DANGEROUS LIGHTNING. ADDITIONAL SHOWER AND THUNDERSTORM DEVELOPMENT IS ALSO EXPECTED MONDAY MORNING AREAWIDE THEN BECOMING PARTLY CLOUDY MONDAY AFTERNOON. 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. FOR INFORMATION ON WEATHER THREATS IN AREAS SURROUNDING SOUTH CENTRAL TEXAS...PLEASE REFER TO THE HAZARDOUS WEATHER OUTLOOKS FROM NWS OFFICES IN MIDLAND...SAN ANGELO...FORT WORTH...HOUSTON/GALVESTON AND CORPUS CHRISTI.
Special weather statement, May 9, 8:15 PM CDT, 4 hours 10 minutes before
TXZ171>173-183>194-202>209-217>225-228-101100- HAZARDOUS WEATHER OUTLOOK...UPDATE NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX 815 PM CDT SUN MAY 9 1999 ...A TORNADO WATCH IS IN EFFECT TIL 12 MIDNIGHT FOR THE COUNTIES OF VAL VERDE...KINNEY...AND EDWARDS... STRONG THUNDERSTORMS CONTINUE TO DEVELOP OVER SOUTHWEST TEXAS NEAR VAL VERDE COUNTY AND WILL MOVE EASTWARD TONIGHT. THE EXTREME WESTERN PORTIONS OF THE TEXAS HILL COUNTRY AND SOUTH CENTRAL TEXAS HAVE A CHANCE OF THUNDERSTORM DEVELOPMENT TONIGHT WITH SOME STORMS POSSIBLY SEVERE. COUNTIES IN THE WATCH AREA MAY HAVE THE DEVELOPMENT OF TORNADOES... HAIL TO THREE INCHES IN DIAMETER...STRONG THUNDERSTORM WIND GUSTS TO 70 MPH...AND DANGEROUS LIGHTNING. ADDITIONAL SHOWER AND THUNDERSTORM DEVELOPMENT IS ALSO EXPECTED MONDAY MORNING AREAWIDE THEN BECOMING PARTLY CLOUDY MONDAY AFTERNOON. 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. FOR INFORMATION ON WEATHER THREATS IN AREAS SURROUNDING SOUTH CENTRAL TEXAS...PLEASE REFER TO THE HAZARDOUS WEATHER OUTLOOKS FROM NWS OFFICES IN MIDLAND...SAN ANGELO...FORT WORTH...HOUSTON/GALVESTON AND CORPUS CHRISTI.
Special weather statement, May 9, 10:45 PM CDT, 1 hour 40 minutes before
TXZ171-172-183>190-101100- HAZARDOUS WEATHER OUTLOOK...UPDATE NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX 1045 PM CDT SUN MAY 9 1999 ...A SEVERE THUNDERSTORM WATCH IS IN EFFECT TIL 4 AM CDT FOR THE COUNTIES OF VAL VERDE...EDWARDS...REAL...KERR...KENDALL... BLANCO...GILLESPIE...LLANO AND BURNET... STRONG THUNDERSTORMS WILL CONTINUE TO DEVELOP OVER SOUTHWEST TEXAS TONIGHT AND MOVE EASTWARD INTO THE TEXAS HILL COUNTRY. COUNTIES IN THE WATCH AREA MAY HAVE THE DEVELOPMENT OF HAIL UP TO TWO INCHES IN DIAMETER...STRONG THUNDERSTORM WIND GUSTS TO 60 MPH AND DANGEROUS LIGHTNING. ADDITIONAL SHOWER AND THUNDERSTORM DEVELOPMENT IS ALSO EXPECTED MONDAY MORNING AREAWIDE THEN BECOMING PARTLY CLOUDY MONDAY AFTERNOON. 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. FOR INFORMATION ON WEATHER THREATS IN AREAS SURROUNDING SOUTH CENTRAL TEXAS...PLEASE REFER TO THE HAZARDOUS WEATHER OUTLOOKS FROM NWS OFFICES IN MIDLAND...SAN ANGELO...FORT WORTH...HOUSTON/GALVESTON AND CORPUS CHRISTI.
The office that day
Everything else NWS Austin/San Antonio, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 9, 11:07 PM CDT | Severe Thunderstorm Warning | EWX | Edwards, Val Verde | 58 min |
| May 9, 11:58 PM CDT | Severe Thunderstorm Warning | EWX | Edwards | 62 min |
| May 10, 12:18 AM CDT | Tornado Warning | EWX | Edwards | 62 min |
| May 10, 12:56 AM CDT | Severe Thunderstorm Warning | EWX | Burnet, Llano | 59 min |
| May 10, 1:08 AM CDT | Severe Thunderstorm Warning | EWX | Edwards | 62 min |
| May 10, 10:02 AM CDT | Severe Thunderstorm Warning | EWX | Williamson | 58 min |
| May 10, 11:01 AM CDT | Severe Thunderstorm Warning | EWX | Williamson | 59 min |
| May 10, 1:37 PM CDT | Flash Flood Warning | EWX | Burnet, Llano | 3 hr |
| May 10, 2:08 PM CDT | Flash Flood Warning | EWX | Williamson | 2 hr |
| May 10, 2:40 PM CDT | Severe Thunderstorm Warning | EWX | Travis, Williamson | 65 min |
| May 10, 3:49 PM CDT | Severe Thunderstorm Warning | EWX | Lee | 56 min |
| May 10, 4:50 PM CDT | Flash Flood Warning | EWX | Williamson | 3 hr |
| May 10, 5:05 PM CDT | Severe Thunderstorm Warning | EWX | Travis, Williamson | 45 min |
| May 10, 6:57 PM CDT | Severe Thunderstorm Warning | EWX | Caldwell, Gonzales, Guadalupe | 48 min |
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.