Alert archive / Texas / Flash Flood Warnings in 2001
Flash Flood Warning 28, NWS Austin/San Antonio, TX
NWS Austin/San Antonio, TX issued this flash flood warning at Aug 27, 2001, 12:28 AM CDT for Hays County, Travis County, Williamson 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 outline the Iowa Environmental Mesonet reconstructed for it; the warning itself named whole counties.
The facts
- Issued
- Aug 27, 2001, 12:28 AM CDT (05:28 UTC)
- Expired
- Aug 27, 2001, 4:30 AM CDT
- In force
- 4 hr
- Issued by
- NWS Austin/San Antonio, TX
- Area
- Whole counties; the outline is the Mesonet’s reconstruction
Counties Hays County, TX, Travis County, TX, Williamson County, TX
The nearest sounding before it
Fort Worth, TX (KFWD), launched 00:00Z, 5.5 hours before the alert went out and 286 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
- 335 J/kg
- Mixed-layer CIN
- -167 J/kg
- Mixed-layer LCL
- 1308 m above ground
- 0-6 km bulk shear
- 15 kt
- 0-1 km storm-relative helicity
- 19 m²/s²
- 0-3 km storm-relative helicity
- 68 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000
WGUS54 KEWX 270534
FFWSAT
TXC209-453-491-270930-
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
1228 AM CDT MON AUG 27 2001
THE NATIONAL WEATHER SERVICE HAS ISSUED A
* FLASH FLOOD WARNING FOR...
TRAVIS
HAYS
WILLIAMSON
* UNTIL 430 AM CDT
* AT 1228 AM...WEATHER SERVICE DOPPLER RADAR INDICATED VERY HEAVY
RAIN FROM WIMBERLEY TO SAN MARCOS...MOVING NORTHEAST AT 15 MPH.
* THE THUNDERSTORM WITH EXCESSIVE RAINFALL WILL BE...
OVER KYLE AT 1250 AM
OVER BUDA AT 110 AM
OVER SOUTH AUSTIN ALONG THE I-35 CORRIDOR AT 120 AM
OVER NORTH AUSTIN ALONG THE I-35 CORRIDOR AT 140 AM
OVER ROUND ROCK AT 2 AM
* THIS WARNING INCLUDES LOCATIONS IN AND AROUND...
KYLE
BUDA
AUSTIN
MANOR
ROUND ROCK
STREAMS ARE ALREADY RUNNING HIGH DUE TO RAINS ON SUNDAY EVENING.
RAINFALL RATES OF 1 TO 3 INCHES PER HOUR WILL CAUSE THESE STREAMS TO
RISE AGAIN.
AMONG THE STREAMS THAT ARE EXPECTED TO RISE AND FLOW FAST AGAIN ARE
ONION CREEK...BARTON CREEK...SHOAL CREEK...BLUNN CREEK...AND WALNUT
CREEK.
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.
LAT...LON 3009 9826 2981 9801 3041 9740 3052 9720
3090 9784The office that day
Everything else NWS Austin/San Antonio, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 26, 7:17 PM CDT | Flash Flood Warning | EWX | Gonzales | 118 min |
| Aug 26, 7:30 PM CDT | Flash Flood Warning | EWX | Hays, Travis, Williamson | 3 hr |
| Aug 27, 3:56 PM CDT | Flash Flood Warning | EWX | Guadalupe | 2 hr |
| Aug 27, 4:09 PM CDT | Flash Flood Warning | EWX | Travis, Williamson | 111 min |
| Aug 27, 4:55 PM CDT | Flash Flood Warning | EWX | Comal, Kendall | 2 hr |
| Aug 27, 6:46 PM CDT | Flash Flood Warning | EWX | Guadalupe | 119 min |
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.