Alert archive / Texas / Flash Flood Warnings in 1996
Flash Flood Warning 50, NWS Austin/San Antonio, TX
NWS Austin/San Antonio, TX issued this flash flood warning at Sep 20, 1996, 7:46 PM CDT for Travis County, Williamson 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 counties it named.
The facts
- Issued
- Sep 20, 1996, 7:46 PM CDT (00:46 UTC)
- Expired
- Sep 20, 1996, 10:45 PM CDT
- In force
- 3 hr
- Issued by
- NWS Austin/San Antonio, TX
- Area
- Whole counties
Counties Travis County, TX, Williamson County, TX
The nearest sounding before it
Fort Worth, TX (KFWD), launched 00:00Z, 0.8 hours before the alert went out and 263 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
- 1680 J/kg
- Mixed-layer CIN
- -32 J/kg
- Mixed-layer LCL
- 961 m above ground
- 0-6 km bulk shear
- 51 kt
- 0-1 km storm-relative helicity
- 90 m²/s²
- 0-3 km storm-relative helicity
- 125 m²/s²
- Significant tornado parameter
- 0.9
- Supercell composite
- 4.9
The text
As transmitted, in the capitals the NWS used until 2016.
000
TTAA00 KSAT 210050
FFWSAT
TXC453-491-210345-
BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM AND FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
746 PM CDT FRI SEP 20 1996
THE NATIONAL WEATHER SERVICE IN AUSTIN/SAN ANTONIO HAS ISSUED A
SEVERE THUNDERSTORM AND FLASH FLOOD WARNING EFFECTIVE UNTIL
1045 PM CDT FOR PEOPLE IN THE FOLLOWING LOCATIONS...
IN SOUTH CENTRAL TEXAS
...TRAVIS COUNTY...WILLIAMSON COUNTY...INCLUDING THE AUSTIN AND
GEORGETOWN METRO AREAS...
AT 745 PM...DOPPLER RADAR INDICATED A LINE OF SEVERE THUNDERSTORMS
EXTENDING FROM FORT HOOD TO MARBLE FALLS. MOVEMENT WAS SOUTHEAST AT 20
MILES PER HOUR. SINCE TRAVIS AND WILLIAMSON COUNTIES RECEIVED
SIGNIFICANT AMOUNTS OF RAIN THE PAST COUPLE OF NIGHTS...ANY ADDITIONAL
RAINFALL FROM THESE STORMS WILL CAUSE FLASH FLOODING.
ALTHOUGH NO TORNADOES HAVE BEEN DETECTED WITH THIS STORM...A
TORNADO WATCH REMAINS IN EFFECT. SEVERE THUNDERSTORMS CAN AND
OCCASIONALLY DO PRODUCE TORNADOES WITH LITTLE OR NO ADVANCE WARNING
SO BE ON THE LOOKOUT.
PEOPLE IN THE PATH OF THIS STORM SHOULD BE ALERT TO THE POSSIBILITY
OF LARGE HAIL AND DAMAGING WINDS. FREQUENT LIGHTNING AND LOCALLY
HEAVY RAIN CAN ALSO OCCUR WITH SEVERE THUNDERSTORMS...FLOODING SMALL
STREAMS...LOW AREAS...AND LOW WATER CROSSINGS.
IF YOU SEE SEVERE WEATHER TAKING PLACE...CALL YOUR REPORT TO
THE NEAREST LAW ENFORCEMENT AGENCY FOR IMMEDIATE RELAY TO THE
NATIONAL WEATHER SERVICE.The office that day
Everything else NWS Austin/San Antonio, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 20, 7:46 PM CDT | Severe Thunderstorm Warning | EWX | Travis, Williamson | 3 hr |
| Sep 20, 7:56 PM CDT | Severe Thunderstorm Warning | EWX | Burnet | 64 min |
| Sep 20, 8:18 PM CDT | Tornado Warning | EWX | Burnet, Travis | 57 min |
| Sep 20, 8:56 PM CDT | Tornado Warning | EWX | Travis | 64 min |
| Sep 20, 9:16 PM CDT | Severe Thunderstorm Warning | EWX | Hays | 59 min |
| Sep 20, 9:33 PM CDT | Severe Thunderstorm Warning | EWX | Bastrop, Lee | 117 min |
| Sep 20, 10:10 PM CDT | Severe Thunderstorm Warning | EWX | Hays | 65 min |
| Sep 20, 10:31 PM CDT | Severe Thunderstorm Warning | EWX | Caldwell | 59 min |
| Sep 20, 10:50 PM CDT | Severe Thunderstorm Warning | EWX | Comal, Guadalupe | 55 min |
| Sep 21, 12:08 AM CDT | Severe Thunderstorm Warning | EWX | Lavaca | 52 min |
| Sep 21, 12:09 AM CDT | Tornado Warning | EWX | Lavaca | 51 min |
| Sep 21, 12:40 AM CDT | Tornado Warning | EWX | DeWitt | 65 min |
Nearby
Flash Flood Warnings in Texas, 1996Every flash flood warning in 1996
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.