Alert archive / Texas / Flash Flood Warnings in 2001
Flash Flood Warning 74, NWS Austin/San Antonio, TX
NWS Austin/San Antonio, TX issued this flash flood warning at Sep 5, 2001, 5:29 PM CDT for Blanco County, Kendall 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 outline the Iowa Environmental Mesonet reconstructed for it; the warning itself named whole counties.
The facts
- Issued
- Sep 5, 2001, 5:29 PM CDT (22:29 UTC)
- Expired
- Sep 5, 2001, 8:00 PM CDT
- In force
- 3 hr
- Issued by
- NWS Austin/San Antonio, TX
- Area
- Whole counties; the outline is the Mesonet’s reconstruction
Counties Blanco County, TX, Kendall County, TX
The radar
The Austin/San Antonio radar (KEWX), 75 km from the middle of the area, began a volume at 22:30 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.
The nearest sounding before it
Del Rio, TX (KDRT), launched 12:00Z, 10.5 hours before the alert went out and 236 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
- 392 J/kg
- Mixed-layer CIN
- -126 J/kg
- Mixed-layer LCL
- 1047 m above ground
- 0-6 km bulk shear
- 17 kt
- 0-1 km storm-relative helicity
- 121 m²/s²
- 0-3 km storm-relative helicity
- 143 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.5
The text
As transmitted, in the capitals the NWS used until 2016.
000
WGUS54 KEWX 052229
FFWSAT
FFWSAT
TXC031-259-060100-
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
529 PM CDT WED SEP 5 2001
THE NATIONAL WEATHER SERVICE HAS ISSUED A
* FLASH FLOOD WARNING FOR THE FOLLOWING COUNTIES IN TEXAS...
KENDALL
BLANCO
* UNTIL 8 PM CDT
* AT 529 PM...WEATHER SERVICE DOPPLER RADAR INDICATED VERY HEAVY RAIN
FROM JOHNSON CITY TO 8 MILES SOUTH OF SISTERDALE...OR FROM 11 MILES
SOUTH OF ROUND MOUNTAIN TO 4 MILES NORTHEAST OF BOERNE...MOVING
NORTHEAST AT 20 MPH.
* THUNDERSTORMS WITH EXCESSIVE RAINFALL WILL BE...
7 MILES SOUTHEAST OF ROUND MOUNTAIN AT 545 PM
OVER CYPRESS MILL AT 555 PM
OVER KENDALIA AT 600 PM
OVER BLANCO AT 625 PM
EXCESSIVE RUNOFF FROM THIS STORM WILL CAUSE FLASH FLOODING OF CREEKS
AND STREAMS...LOW WATER CROSSINGS AND ROADSIDE CULVERTS.
A FLASH FLOOD WARNING MEANS THAT FLOODING IS OCCURRING OR IS
IMMINENT. MOST FLASH FLOOD DEATHS OCCUR IN AUTOMOBILES. DO NOT
ATTEMPT TO CROSS BRIDGES...DIPS...OR OTHER LOW SPOTS IF WATER COVERS
THE ROADWAY. NEVER TRY TO CROSS A FLOWING STREAM...EVEN A SMALL
ONE...ON FOOT. TO ESCAPE RISING WATER MOVE UP TO HIGHER GROUND.
LAT...LON 3048 9853 3012 9858 3008 9885 2977 9883
2988 9855 3042 9819The office that day
Everything else NWS Austin/San Antonio, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 5, 9:33 AM CDT | Flash Flood Warning | EWX | Lavaca | 4 hr |
| Sep 5, 12:23 PM CDT | Flash Flood Warning | EWX | DeWitt, Gonzales | 3 hr |
| Sep 5, 12:41 PM CDT | Flash Flood Warning | EWX | Caldwell, Comal, Guadalupe, Hays, Travis, Williamson | 3 hr |
| Sep 5, 12:59 PM CDT | Flash Flood Warning | EWX | Lavaca | 3 hr |
| Sep 5, 1:34 PM CDT | Flash Flood Warning | EWX | Karnes | 3 hr |
| Sep 5, 1:51 PM CDT | Flash Flood Warning | EWX | Real | 3 hr |
| Sep 5, 2:44 PM CDT | Flash Flood Warning | EWX | Bastrop, Fayette, Lee | 3 hr |
| Sep 5, 2:50 PM CDT | Flash Flood Warning | EWX | Wilson | 115 min |
| Sep 5, 3:01 PM CDT | Flash Flood Warning | EWX | Bandera, Kerr | 3 hr |
| Sep 5, 3:21 PM CDT | Flash Flood Warning | EWX | Comal, Gonzales, Guadalupe | 3 hr |
| Sep 5, 4:39 PM CDT | Flash Flood Warning | EWX | Karnes, Wilson | 4 hr |
| Sep 5, 5:57 PM CDT | Flash Flood Warning | EWX | Bandera | 2 hr |
| Sep 5, 6:03 PM CDT | Flash Flood Warning | EWX | Medina | 2 hr |
| Sep 5, 6:49 PM CDT | Flash Flood Warning | EWX | Bexar, Comal | 2 hr |
Nearby
Flash Flood Warnings in Texas, 2001Every flash flood warning in 2001
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.