Alert archive / Texas / Flash Flood Warnings in 1999
Flash Flood Warning 77, NWS Austin/San Antonio, TX
NWS Austin/San Antonio, TX issued this flash flood warning at Jun 25, 1999, 6:50 PM CDT for DeWitt County, Gonzales County, Guadalupe County, Texas. It was in force for 2 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
- Jun 25, 1999, 6:50 PM CDT (23:50 UTC)
- Expired
- Jun 25, 1999, 9:00 PM CDT
- In force
- 2 hr
- Issued by
- NWS Austin/San Antonio, TX
- Area
- Whole counties
Counties DeWitt County, TX, Gonzales County, TX, Guadalupe County, TX
The radar
The Austin/San Antonio radar (KEWX), 55 km from the middle of the area, began a volume at 23:53 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
Corpus Christi, TX (KCRP), launched 12:00Z, 11.8 hours before the alert went out and 185 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
- 2721 J/kg
- Mixed-layer CIN
- -2 J/kg
- Mixed-layer LCL
- 519 m above ground
- 0-6 km bulk shear
- 4 kt
- 0-1 km storm-relative helicity
- -56 m²/s²
- 0-3 km storm-relative helicity
- 22 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KEWX 252351 FFWSAT TXC187-493-260200- BULLETIN - EAS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX 650 PM CDT FRI JUN 25 1999 THE NATIONAL WEATHER SERVICE IN AUSTIN/SAN ANTONIO HAS ISSUED A * FLASH FLOOD WARNING FOR THE FOLLOWING... DEWITT COUNTY IN TEXAS GUADALUPE COUNTY IN TEXAS * UNTIL 900 PM CDT * DOPPLER RADAR INDICATED THUNDERSTORMS PRODUCING VERY HEAVY RAINFALL OVER GONZALES COUNTY AND MOVING INTO DEWITT COUNTY. RAINFALL RATES WERE ESTIMATED AT 1 TO 2 INCHES AN HOUR. MOVEMENT WAS SOUTH AT 10 TO 15 MPH. EXCESSIVE RUNOFF FROM THESE STORMS WILL CAUSE FLASH FLOODING OF SMALL CREEKS AND STREAMS...LOW WATER CROSSINGS AND UNDERPASSES. ADDITIONALLY...COUNTRY ROADS AND FARMLANDS ALONG THE BANKS OF CREEKS AND STREAMS AND OTHER LOW LYING AREAS ARE SUBJECT TO FLASH FLOODING. DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE ROADWAY. THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO CROSS SAFELY. VEHICLES CAUGHT IN RISING WATER SHOULD BE ABANDONED QUICKLY. MOVE TO HIGHER GROUND.
1 follow-up statement
000 TTAA00 KEWX 252354 RRA FFWSAT TXC177-493-260200- BULLETIN - EAS ACTIVATION REQUESTED...CORRECTION TO COUNTIES FLASH FLOOD WARNING NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX 650 PM CDT FRI JUN 25 1999 THE NATIONAL WEATHER SERVICE IN AUSTIN/SAN ANTONIO HAS ISSUED A * FLASH FLOOD WARNING FOR THE FOLLOWING... DEWITT COUNTY IN TEXAS GONZALES COUNTY IN TEXAS * UNTIL 900 PM CDT * DOPPLER RADAR INDICATED THUNDERSTORMS PRODUCING VERY HEAVY RAINFALL OVER GONZALES COUNTY AND MOVING INTO DEWITT COUNTY. RAINFALL RATES WERE ESTIMATED AT 1 TO 2 INCHES AN HOUR. MOVEMENT WAS SOUTH AT 10 TO 15 MPH. EXCESSIVE RUNOFF FROM THESE STORMS WILL CAUSE FLASH FLOODING OF SMALL CREEKS AND STREAMS...LOW WATER CROSSINGS AND UNDERPASSES. ADDITIONALLY...COUNTRY ROADS AND FARMLANDS ALONG THE BANKS OF CREEKS AND STREAMS AND OTHER LOW LYING AREAS ARE SUBJECT TO FLASH FLOODING. DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE ROADWAY. THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO CROSS SAFELY. VEHICLES CAUGHT IN RISING WATER SHOULD BE ABANDONED QUICKLY. MOVE TO HIGHER GROUND.
The office that day
Everything else NWS Austin/San Antonio, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 24, 7:56 PM CDT | Flash Flood Warning | EWX | Frio | 79 min |
| Jun 24, 8:08 PM CDT | Flash Flood Warning | EWX | Atascosa | 3 hr |
| Jun 25, 3:31 PM CDT | Flash Flood Warning | EWX | Fayette, Gonzales, Lavaca | 119 min |
| Jun 25, 5:00 PM CDT | Flash Flood Warning | EWX | Gonzales, Lavaca | 2 hr |
| Jun 25, 5:00 PM CDT | Flash Flood Warning | EWX | Caldwell, Guadalupe | 2 hr |
| Jun 25, 5:00 PM CDT | Flash Flood Warning | EWX | Caldwell, Gonzales, Guadalupe | 60 min |
| Jun 25, 5:00 PM CDT | Flash Flood Warning | EWX | Lavaca | 60 min |
| Jun 25, 5:55 PM CDT | Flash Flood Warning | EWX | Karnes, Wilson | 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.