Alert archive / Texas / Flash Flood Warnings in 1996
Flash Flood Warning 45, NWS Austin/San Antonio, TX
NWS Austin/San Antonio, TX issued this flash flood warning at Sep 19, 1996, 11:58 PM CDT for Williamson County, Texas. It was in force for 2 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 19, 1996, 11:58 PM CDT (04:58 UTC)
- Expired
- Sep 20, 1996, 2:00 AM CDT
- In force
- 2 hr
- Issued by
- NWS Austin/San Antonio, TX
- Area
- Whole counties
County Williamson County, TX
The radar
The Ft Hood radar (KGRK), 22 km from the middle of the area, began a volume at 04:59 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
Fort Worth, TX (KFWD), launched 00:00Z, 5.0 hours before the alert went out and 245 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
- 670 J/kg
- Mixed-layer CIN
- -29 J/kg
- Mixed-layer LCL
- 1365 m above ground
- 0-6 km bulk shear
- 18 kt
- 0-1 km storm-relative helicity
- 60 m²/s²
- 0-3 km storm-relative helicity
- 165 m²/s²
- Significant tornado parameter
- 0.1
- Supercell composite
- 2.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KSAT 200502 FFWSAT TXC491-200700- BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM AND FLASH FLOOD WARNING NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX 1158 PM CDT THU SEP 19 1996 THE NATIONAL WEATHER SERVICE IN AUSTIN/SAN ANTONIO HAS ISSUED A SEVERE THUNDERSTORM AND FLASH FLOOD WARNING EFFECTIVE UNTIL 2 AM CDT FOR PEOPLE IN THE FOLLOWING LOCATION... IN SOUTH CENTRAL TEXAS ...WILLIAMSON COUNTY...INCLUDING THE CITY OF GEORGETOWN... AT 1155 PM CDT...NEXRAD DOPPLER RADAR CONTINUED TO INDICATE A SEVERE THUNDERSTORM IN WILLIAMSON COUNTY. THE STORM WAS MOVING TOWARD THE SOUTH AT 15 MPH. RADAR ESTIMATES THAT OVER AN INCH OF RAIN HAS FALLEN IN AND AROUND GEORGETOWN AND ADJACENT AREAS OF WILLIAMSON COUNTY DURING THE PAST HOUR OR TWO. SINCE LOCALLY HEAVY RAINFALL OCCURRED IN THESE AREAS WEDNESDAY...THE GROUND IS ALREADY SOAKED. THIS ADDITIONAL RAINFALL WILL NOT SOAK IN BUT RUN OFF RAPIDLY... INCREASING THE THREAT FOR FLASH FLOODING. 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-LYING 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.
What forecasters said that day
The local office's own words before this flash flood warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
In the hours before
Special weather statement, Sep 19, 9:15 PM CDT, 2 hours 43 minutes before
TXZ171>173-190>194-208-200400- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX 905 PM CDT THU SEP 19 1996 ...SEVERE THUNDERSTORM WATCH IN EFFECT FOR CENTRAL TEXAS... INCLUDING THE GEORGETOWN AND AUSTIN METROPOLITAN AREAS... THE STORM PREDICTION CENTER OF THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM WATCH FOR CENTRAL TEXAS VALID UNTIL 1 AM CDT FRIDAY MORNING. THE WATCH IN WITHIN AN AREA ALONG AND 60 MILES EITHER SIDE OF A LINE FROM 30 MILES WEST OF AUSTIN TO 55 MILES EAST-NORTHEAST OF WACO. THE METROPOLITAN AREAS OF GEORGETOWN AND AUSTIN ARE INCLUDED IN THE WATCH. A SEVERE THUNDERSTORM WATCH MEANS SEVERE THUNDERSTORMS MAY OCCUR IN THE AFFECTED AREA. PERSONS IN LLANO...BURNET...BLANCO...HAYS... WILLIAMSON...TRAVIS...LEE...BASTROP AND CALDWELL COUNTIES SHOULD MONITOR THE LATEST WEATHER BULLETINS AND FORECASTS AND BE READY TO MOVE TO A PLACE OF SAFETY IF A SEVERE WEATHER WARNING IS ISSUED. IN ADDITION TO LARGE HAIL...DAMAGING WINDS AND FREQUENT DEADLY LIGHTNING...SEVERE THUNDERSTORMS ALSO CAN PRODUCE TORNADOES... LOCALLY HEAVY RAINFALL AND FLASH FLOODING. ADDITIONAL STATEMENTS OR BULLETINS CONCERNING THIS WEATHER SITUATION WILL BE ISSUED AS CONDITIONS WARRANT...SO PLEASE STAY TUNED TO LOCAL RADIO...TV OR NOAA WEATHER RADIO STATIONS.
Local storm report, Sep 19, 11:50 PM CDT, 8 minutes before
PRELIMINARY LOCAL STORM REPORT...
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TEXAS
1145 PM CDT THU SEP 18 1996
TIME(CDT) .....CITY LOCATION..... STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
1115 PM KINGSLAND TX TREE LIMBS AND MAIL BOXES
09/19/96 LLANO DOWN DUE TO HIGH WINDS.
LLANO SHERIFF
1122 PM KINGSLAND TX .75 HAIL
09/19/96 LLANO AT KNOB HILL IN KINGSLAND
LLANO SHERIFFThe office that day
Everything else NWS Austin/San Antonio, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 19, 9:55 PM CDT | Flash Flood Warning | EWX | Williamson | 2 hr |
| Sep 19, 9:55 PM CDT | Severe Thunderstorm Warning | EWX | Williamson | 2 hr |
| Sep 19, 10:45 PM CDT | Flash Flood Warning | EWX | Burnet | 2 hr |
| Sep 19, 10:45 PM CDT | Severe Thunderstorm Warning | EWX | Burnet | 2 hr |
| Sep 19, 10:56 PM CDT | Severe Thunderstorm Warning | EWX | Llano | 64 min |
| Sep 19, 11:25 PM CDT | Severe Thunderstorm Warning | EWX | Travis | 65 min |
| Sep 19, 11:58 PM CDT | Severe Thunderstorm Warning | EWX | Williamson | 2 hr |
| Sep 20, 12:24 AM CDT | Flash Flood Warning | EWX | Travis | 2 hr |
| Sep 20, 12:24 AM CDT | Severe Thunderstorm Warning | EWX | Travis | 2 hr |
| Sep 20, 1:02 AM CDT | Severe Thunderstorm Warning | EWX | Burnet, Llano | 58 min |
| Sep 20, 1:09 AM CDT | Flash Flood Warning | EWX | Bastrop | 2 hr |
| Sep 20, 1:09 AM CDT | Severe Thunderstorm Warning | EWX | Bastrop | 2 hr |
| Sep 20, 1:26 AM CDT | Flash Flood Warning | EWX | Burnet, Llano | 2 hr |
| Sep 20, 1:26 AM CDT | Severe Thunderstorm Warning | EWX | Burnet, Llano | 2 hr |
| Sep 20, 1:43 AM CDT | Severe Thunderstorm Warning | EWX | Caldwell | 62 min |
| Sep 20, 2:26 AM CDT | Flash Flood Warning | EWX | Fayette, Gonzales | 2 hr |
| Sep 20, 2:26 AM CDT | Severe Thunderstorm Warning | EWX | Fayette, Gonzales | 2 hr |
| Sep 20, 6:30 PM CDT | Severe Thunderstorm Warning | EWX | Burnet | 60 min |
| Sep 20, 6:53 PM CDT | Tornado Warning | EWX | Burnet | 67 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; radar from the NEXRAD Level II archive.