Alert archive / Texas / Flash Flood Warnings in 1999
Flash Flood Warning 3, NWS Austin/San Antonio, TX
NWS Austin/San Antonio, TX issued this flash flood warning at Jan 1, 1999, 9:25 PM CST for Lavaca 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
- Jan 1, 1999, 9:25 PM CST (03:25 UTC)
- Expired
- Jan 1, 1999, 11:55 PM CST
- In force
- 3 hr
- Issued by
- NWS Austin/San Antonio, TX
- Area
- Whole counties
County Lavaca County, TX
The nearest sounding before it
Corpus Christi, TX (KCRP), launched 00:00Z, 3.4 hours before the alert went out and 188 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
- 1786 J/kg
- Mixed-layer CIN
- -11 J/kg
- Mixed-layer LCL
- 589 m above ground
- 0-6 km bulk shear
- 67 kt
- 0-1 km storm-relative helicity
- 228 m²/s²
- 0-3 km storm-relative helicity
- 301 m²/s²
- Significant tornado parameter
- 3.3
- Supercell composite
- 10.6
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KSAT 020325 FFWSAT TXC285-020555- BULLETIN - EAS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX 925 PM CST FRI JAN 1 1999 THE NATIONAL WEATHER SERVICE IN AUSTIN/SAN ANTONIO HAS ISSUED A * FLASH FLOOD WARNING FOR... LAVACA IN TEXAS * UNTIL 1155 PM CST * AT 915 PM CST... NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A THUNDERSTORM WITH VERY HEAVY RAIN NORTHERN LAVACA COUNTY... MOVING EAST NEAR 30 MPH. * HEAVY RAINS OF 1.5 TO 2 INCHES OVER LAVACA COUNTY DURING THE LAST ONE TO TWO HOURS AND WITH ADDITIONAL RAIN EXPECTED... FLASH FLOODING WILL LIKELY OCCUR. LOW WATER CROSSINGS...STREAMS AND CREEKS MAY BE FLOODED OR IN THE PROCESS OF FLOODING. MOTORISTS SHOULD USE EXRA CAUTION DUE TO DARKNESS. DON'T DRIVE INTO AREAS WHERE WATER COVERS THE ROAD! JDS REMEMBER... A TORNADO WATCH MEANS THAT TORNADOES ARE POSSIBLE IN AND NEAR THE WATCH AREA. LARGE HAIL... DAMAGING WINDS... AND TORRENTIAL RAINFALL MAY ALSO OCCUR. BE READY TO SEEK A PLACE OF SAFETY IF A WARNING IS ISSUED FOR YOUR AREA. AREA RESIDENTS SHOULD MONITOR FLOOD CONDITIONS... AND BE PREPARED TO MOVE TO HIGHER GROUND... SHOULD FLOOD WATERS THREATEN. IF FLASH FLOODING IS OFBSERVED... ACT QUICKLY. MOVE TO HIGHER GROUND TO ESCAPE FLOOD WATERS. DO NOT STAY IN AREAS SUBJECT TO FLOODING WHEN WATER BEGINS RISING.
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, Jan 1, 6:12 PM CST, 3 hours 13 minutes before
TXZ171>173-183>194-202>209-217>225-228-021200- HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX 612 PM CST FRI JAN 1 1999 THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS AND FLASH FLOODING THIS EVENING ACROSS EASTERN SECTIONS OF SOUTH CENTRAL TEXAS. A LINE OF HEAVY RAIN PRODUCING AND POTENTIALLY SEVERE THUNDERSTORMS WILL BE MOVING THROUGH THE AREA. THE LINE OF STORMS EXTENDS FROM EASTERN BEXAR COUNTY NORTHEAST TO EASTERN WILLIAMSON COUNTY. THIS LINE OF STORMS IS MOVING SLOWLY TO THE EAST AND WILL BRING HEAVY RAIN AND STRONG GUSTY WINDS THROUGH GUADALUPE...CALDWELL... BASTROP AND LEE COUNTIES UNTIL AROUND 900 PM. THESE STORMS WILL PRODUCE RAINFALL RATES OF 1 TO 2 INCHES PER HOUR. HEAVY AND PERSISTENT RAIN MAY BRING FLASH FLOODING TO THOSE COUNTIES EAST OF THE I-35 CORRIDOR FROM AROUND SAN ANTONIO TO AUSTIN. THE THREAT OF SEVERE WEATHER WILL END FROM WEST TO EAST AND SHOULD BE AFTER MIDNIGHT. SPOTTER NETWORKS WILL NEED TO BE ACTIVATED EAST OF THE HILL COUNTRY THIS EVENING. NEARBY HAZARDOUS WEATHER OUTLOOKS INCLUDE: SOUTHWEST TEXAS FROM MIDLAND LBBSPSMAF...WWUS35 KMAF CONCHO VALLEY FROM SAN ANGELO LBBSPSSJT...WWUS35 KSJT NORTH TEXAS FROM FORT WORTH FTWSPSFTW...WWUS35 KFTW SOUTHEAST TEXAS FROM HOUSTON/GALVESTON SATSPSHOU...WWUS35 KHOU COASTAL BEND/ FROM CORPUS CHRISTI SATSPSCRP...WWUS35 KCRP RIO GRANDE PLAINS THE HAZARDOUS WEATHER OUTLOOK NORMALLY WILL BE UPDATED BY MEANS OF THE ZONE FORECASTS...SHORT TERM FORECAST...WATCHES...WARNINGS AND ADVISORIES. THE HAZARDOUS WEATHER OUTLOOK ITSELF WILL BE UPDATED ONLY IF UNEXPECTED HAZARDOUS WEATHER DEVELOPS OR IF EXPECTED HAZARDOUS WEATHER NO LONGER IS FORECAST TO DEVELOP. THE OFFICIAL SOURCE OF NATIONAL WEATHER SERVICE DATA AND PRODUCTS IS THE NOAA WEATHER RADIO...NOAA WEATHER WIRE...FAMILY OF SERVICES AND EMWIN. THE VOICE OF THE NATIONAL WEATHER SERVICE...NOAA WEATHER RADIO... OPERATING ON A FREQUENCY BETWEEN 162.400 MHZ AND 162.550 MHZ. ADDITIONAL WEATHER INFORMATION IS AVAILABLE ON THE NATIONAL WEATHER SERVICE CENTRAL AND SOUTH CENTRAL TEXAS HOME PAGE OF THE INTERNET WORLD WIDE WEB AT WWW.SRH.NOAA.GOV/EWX. TIMELY DELIVERY OF DATA AND PRODUCTS FROM THIS SERVER THROUGH THE INTERNET IS NOT GUARANTEED... UNLIKE DATA AND PRODUCTS DELIVERED FROM THE OFFICIAL NATIONAL WEATHER SERVICE SOURCES.
The office that day
Everything else NWS Austin/San Antonio, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jan 1, 6:20 PM CST | Severe Thunderstorm Warning | EWX | Bastrop, Travis, Williamson | 75 min |
| Jan 1, 6:58 PM CST | Tornado Warning | EWX | Lee | 47 min |
| Jan 1, 7:03 PM CST | Tornado Warning | EWX | Guadalupe, Wilson | 62 min |
| Jan 1, 7:12 PM CST | Severe Thunderstorm Warning | EWX | Gonzales | 93 min |
| Jan 1, 7:19 PM CST | Tornado Warning | EWX | Caldwell | 61 min |
| Jan 1, 7:32 PM CST | Tornado Warning | EWX | Gonzales | 63 min |
| Jan 1, 8:05 PM CST | Flash Flood Warning | EWX | Gonzales | 2 hr |
| Jan 1, 8:26 PM CST | Severe Thunderstorm Warning | EWX | Fayette, Lavaca | 89 min |
| Jan 1, 8:50 PM CST | Tornado Warning | EWX | Lavaca | 65 min |
| Jan 1, 9:19 PM CST | Tornado Warning | EWX | Gonzales, Lavaca | 61 min |
| Jan 1, 10:43 PM CST | Flash Flood Warning | EWX | Fayette, Gonzales | 92 min |
| Jan 1, 10:43 PM CST | Severe Thunderstorm Warning | EWX | Fayette, Gonzales | 92 min |
| Jan 1, 11:31 PM CST | Flash Flood Warning | EWX | Fayette, Lavaca | 119 min |
Nearby
Flash Flood Warnings in Texas, 1999Every flash flood warning in 1999
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.