Alert archive / Texas / Flash Flood Warnings in 1999
Flash Flood Warning 83, NWS Austin/San Antonio, TX
NWS Austin/San Antonio, TX issued this flash flood warning at Jul 11, 1999, 3:30 AM CDT for Medina County, Uvalde County, Texas. It was in force for 4 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
- Jul 11, 1999, 3:30 AM CDT (08:30 UTC)
- Expired
- Jul 11, 1999, 7:30 AM CDT
- In force
- 4 hr
- Issued by
- NWS Austin/San Antonio, TX
- Area
- Whole counties
Counties Medina County, TX, Uvalde County, TX
The nearest sounding before it
Del Rio, TX (KDRT), launched 00:00Z, 8.5 hours before the alert went out and 136 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
- 1412 J/kg
- Mixed-layer CIN
- -35 J/kg
- Mixed-layer LCL
- 1085 m above ground
- 0-6 km bulk shear
- 19 kt
- 0-1 km storm-relative helicity
- 13 m²/s²
- 0-3 km storm-relative helicity
- -10 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 110830 FFWSAT TXC325-463-111230- BULLETIN - EAS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX 330 AM CDT SUN JUL 11 1999 THE NATIONAL WEATHER SERVICE IN AUSTIN/SAN ANTONIO HAS ISSUED A * FLASH FLOOD WARNING FOR THE FOLLOWING COUNTIES IN TEXAS... UVALDE COUNTY MEDINA COUNTY * UNTIL 730 AM CDT * PERSISTENT SHOWERS AND THUNDERSTORMS TONIGHT HAVE PRODUCED RAINS OF UP TO 4 INCHES IN UVALDE COUNTY BETWEEN THE CITY OF UVALDE AND KNIPPA AND OVER PARTS OF NORTHERN MEDINA COUNTY INCLUDING THE AREA JUST SOUTH OF MEDINA LAKE. SHOWERS AND THUNDERSTORMS WILL BE MOVING SLOWLY NORTHWEST AND SHOULD EFFECT THE CONCAN AND GARNER STATE PARK AREAS WITHIN THE NEXT COUPLE OF HOURS. CAMPERS ALONG THE FRIO AND DRY FRIO RIVERS IN UVALDE COUNTY SHOULD MOVE TO HIGHER GROUND. CAMPERS ALONG MEDINA LAKE SHOULD BE ALERT FOR POSSIBLE RISING WATER. 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 HIGHER GROUND TO ESCAPE FLOOD WATERS. DO NOT STAY IN AREAS SUBJECT TO FLOODING WHEN WATER BEGINS RISING. A FLASH FLOOD WARNING MEANS THAT FLOODING IbS IMMINENT. IT IS IMPORTANT TO KNOW WHERE YOU ARE RELATIVE TO STREAMS...RIVERS...OR CREEKS WHICH CAN BECOME KILLERS IN HEAVY RAINS. CAMPERS SHOULD AVOID CAMPING ALONG STREAMS OR CREEKS DURING THREATENING RAINS.
The office that day
Everything else NWS Austin/San Antonio, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 10, 10:45 PM CDT | Flash Flood Warning | EWX | Bandera | 2 hr |
| Jul 11, 7:15 AM CDT | Flash Flood Warning | EWX | Bandera, Medina, Uvalde | 5 hr |
| Jul 11, 8:00 AM CDT | Flash Flood Warning | EWX | Val Verde | 4 hr |
| Jul 11, 8:31 AM CDT | Flash Flood Warning | EWX | Kendall | 3 hr |
| Jul 11, 11:50 AM CDT | Flash Flood Warning | EWX | Val Verde | 3 hr |
| Jul 11, 3:20 PM CDT | Flash Flood Warning | EWX | Lee | 100 min |
| Jul 11, 6:10 PM CDT | Flash Flood Warning | EWX | Karnes | 110 min |
| Jul 11, 6:47 PM CDT | Flash Flood Warning | EWX | Bexar, Comal, Kendall | 2 hr |
| Jul 11, 6:47 PM CDT | Flash Flood Warning | EWX | Bandera, Real, Uvalde | 2 hr |
| Jul 11, 6:47 PM CDT | Flash Flood Warning | EWX | Medina | 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.