Alert archive / Texas / Flash Flood Warnings in 2003
Flash Flood Warning 80, NWS Austin/San Antonio, TX
NWS Austin/San Antonio, TX issued this flash flood warning at Sep 11, 2003, 5:31 PM CDT for Llano 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 as issued.
The facts
- Issued
- Sep 11, 2003, 5:31 PM CDT (22:31 UTC)
- Expired
- Sep 11, 2003, 8:30 PM CDT
- In force
- 3 hr
- Issued by
- NWS Austin/San Antonio, TX
- Area
- Counties, with a storm outline in the text
County Llano County, TX
The nearest sounding before it
Del Rio, TX (KDRT), launched 12:00Z, 10.5 hours before the alert went out and 257 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
- 2364 J/kg
- Mixed-layer CIN
- -29 J/kg
- Mixed-layer LCL
- 738 m above ground
- 0-6 km bulk shear
- 9 kt
- 0-1 km storm-relative helicity
- 11 m²/s²
- 0-3 km storm-relative helicity
- 75 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 112234 FFWSAT TXC299-120130- BULLETIN - EAS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX 531 PM CDT THU SEP 11 2003 THE NATIONAL WEATHER SERVICE IN AUSTIN SAN ANTONIO HAS ISSUED A * FLASH FLOOD WARNING FOR THE FOLLOWING COUNTIES... LLANO * UNTIL 830 PM CDT * AT 531 PM...WEATHER SERVICE DOPPLER RADAR INDICATED VERY HEAVY RAIN OVER LLANO...MOVING EAST AT 15 MPH. THUNDERSTORMS WILL TRAIN OVER THE SAME AREAS OF LLANO COUNTY...MAINLY ALONG HIGHWAYS 71 AND 29...AND PRODUCE HEAVY RAINFALL TOTALS OF 2 TO 4 INCHES WITHIN THE NEXT HOUR. THESE HEAVY RAINFALL AMOUNTS WILL PRODUCE FLASH FLOODING. ANOTHER WAVE OF HEAVY RAIN COULD MOVE IN FROM THE NORTH BETWEEN 630 AND 730 WHICH WOULD WORSEN THE FLOODING SITUATION. 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 3092 9895 3066 9895 3068 9845 3093 9848 $$
1 follow-up statement
000 WGUS74 KEWX 120010 FFSSAT TXC299-120130- FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX 710 PM CDT THU SEP 11 2003 ...A FLASH FLOOD WARNING CONTINUES FOR LLANO COUNTY UNTIL 830 PM CDT... AT 710 PM...WEATHER SERVICE DOPPLER RADAR INDICATED A LINE OF THUNDERSTORMS TRAINING OVER LLANO COUNTY. THIS LINE WILL LIKELY PRODUCE RAINFALL AMOUNTS OF 1 TO 2 INCHES OF ADDITIONAL RAINFALL OVER ALREADY SATURATED SOILS. 3-HOUR RAINFALL TOTALS OVER WESTERN LLANO COUNTY MAY REACH 5 INCHES OVER AN AREA ALONG HIGHWAY 29 BETWEEN 5 AND 10 MILES WEST OF LLANO. TRAVEL ACROSS LLANO COUNTY IS DISCOURAGED FOR THE NEXT HOUR OR TWO AS MANY LOW WATER CROSSINGS IN WESTERN LLANO COUNTY IS LIKELY FLOODED. DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE WATER COVERS THE ROAD. VEHICLES CAUGHT IN RISING WATER SHOULD BE ABANDONED QUICKLY. MOVE TO HIGHER GROUND. STAY TUNED TO LOCAL MEDIA OUTLETS FOR THE LATEST WEATHER INFORMATION. $$
The office that day
Everything else NWS Austin/San Antonio, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 11, 5:16 PM CDT | Severe Thunderstorm Warning | EWX | Llano | 59 min |
Nearby
Flash Flood Warnings in Texas, 2003Every flash flood warning in 2003
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.