Alert archive / Texas / Flash Flood Warnings in 1998
Flash Flood Warning 137, NWS Austin/San Antonio, TX
NWS Austin/San Antonio, TX issued this flash flood warning at Sep 10, 1998, 11:29 PM CDT for Lavaca County, Texas. It was in force for 6 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 10, 1998, 11:29 PM CDT (04:29 UTC)
- Expired
- Sep 11, 1998, 5:30 AM CDT
- In force
- 6 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, 4.5 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
- 4 J/kg
- Mixed-layer CIN
- -114 J/kg
- Mixed-layer LCL
- 501 m above ground
- 0-6 km bulk shear
- 12 kt
- 0-1 km storm-relative helicity
- 76 m²/s²
- 0-3 km storm-relative helicity
- 170 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KSAT 110431 FFWSAT TXC285-111030- BULLETIN - EAS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX 1129 PM CDT THU SEP 10 1998 THE NATIONAL WEATHER SERVICE IN AUSTIN/SAN ANTONIO HAS ISSUED A * FLASH FLOOD WARNING FOR... LAVACA COUNTY IN SOUTH CENTRAL TEXAS * UNTIL 530 AM CDT * AT 1120 PM CDT...DOPPLER RADAR INDICATED A BAND OF THUNDERSTORMS PRODUCING RAINFALL RATES OF 1 TO 2 INCHES AN HOUR MOVING INTO LAVACA COUNTY. MOVEMENT WAS WEST AT 20 MPH. ADDITIONAL THUNDERSTORMS WITH HEAVY RAIN CAN BE EXPECTED AS TROPICAL STORM FRANCES REMAINS OFFSHORE SOUTH SOUTHEAST OF PORT O'CONNOR. * IF YOU ARE IN THESE AREAS... MOVE TO HIGHER GROUND. DO NOT DRIVE THROUGH WATER COVERING THE ROAD. 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 ESCAPE FLOOD WATERS. DO NOT STAY IN AREAS SUBJECT TO FLOODINGl WHEN WATER BEGINS RISING. IT IS VERY DIFFICULT AT NIGHT TO TELL HOW MUCH WATER IS ON ROADS. MOTORISTS SHOULD NOT DRIVE THROUGH WATER OF UNKNOWN DEPTH.
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 10, 5:35 PM CDT, 5 hours 54 minutes before
TXZ171>173-183>194-202>209-217>225-228-111100- HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX 535 PM CDT THU SEP 10 1998 ...FLASH FLOOD WATCH IN EFFECT TONIGHT FOR THE SOUTHEAST COUNTIES... ...FLASH FLOOD WATCH IN EFFECT FRIDAY FOR ALL OF SOUTH CENTRAL TEXAS AND THE HILL COUNTRY... TROPICAL STORM FRANCES WAS LOCATED ABOUT 165 MILES SOUTHEAST OF CORPUS CHRISTI AND WAS NEARLY STATIONARY. HOWEVER A SLOW WEST- NORTHWEST MOVEMENT IS EXPECTED TO OCCUR THIS EVENING WITH FRANCES MAKING LANDFALL FRIDAY AFTERNOON OR EVENING ALONG THE MIDDLE TEXAS COAST. ONCE INLAND...FRANCES IS FORECASTED TO TRACK WEST NORTHWEST ACROSS SOUTH CENTRAL TEXAS...EVENTUALLY ENDING UP OVER THE EDWARDS PLATEAU SUNDAY. THIS FORECASTED TRACK AND SLOW MOVEMENT IS VERY SIMILAR TO WHAT OCCURRED WITH TROPICAL STORM CHARLEY. THIS TRACK PUTS SOUTH CENTRAL TEXAS AND THE HILL COUNTRY IN THE FAVORED NORTHEAST QUADRANT OF THE TROPICAL STORM...THUS HEAVY RAINFALL AND FLOODING IS LIKELY BEGINNING AS EARLY AS TONIGHT FOR THE SOUTHEAST COUNTIES. THE IS A POTENTIALLY VERY DANGEROUS SITUATION AND RESIDENTS ARE URGED TO CLOSELY MONITOR THE WEATHER. 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. 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 OR TUNE TO THE VOICE OF THE NATIONAL WEATHER SERVICE...NOAA WEATHER RADIO...OPERATING ON A FREQUENCY BETWEEN 162.400 MHZ AND 162.550 MHZ. 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
Special weather statement, Sep 10, 5:35 PM CDT, 5 hours 54 minutes before
TXZ171>173-183>194-202>209-217>225-228-111100- HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX 535 PM CDT THU SEP 10 1998 ...FLASH FLOOD WATCH IN EFFECT TONIGHT FOR THE SOUTHEAST COUNTIES... ...FLASH FLOOD WATCH IN EFFECT FRIDAY FOR ALL OF SOUTH CENTRAL TEXAS AND THE HILL COUNTRY... TROPICAL STORM FRANCES WAS LOCATED ABOUT 165 MILES SOUTHEAST OF CORPUS CHRISTI AND WAS NEARLY STATIONARY. HOWEVER A SLOW WEST- NORTHWEST MOVEMENT IS EXPECTED TO OCCUR THIS EVENING WITH FRANCES MAKING LANDFALL FRIDAY AFTERNOON OR EVENING ALONG THE MIDDLE TEXAS COAST. ONCE INLAND...FRANCES IS FORECASTED TO TRACK WEST NORTHWEST ACROSS SOUTH CENTRAL TEXAS...EVENTUALLY ENDING UP OVER THE EDWARDS PLATEAU SUNDAY. THIS FORECASTED TRACK AND SLOW MOVEMENT IS VERY SIMILAR TO WHAT OCCURRED WITH TROPICAL STORM CHARLEY. THIS TRACK PUTS SOUTH CENTRAL TEXAS AND THE HILL COUNTRY IN THE FAVORED NORTHEAST QUADRANT OF THE TROPICAL STORM...THUS HEAVY RAINFALL AND FLOODING IS LIKELY BEGINNING AS EARLY AS TONIGHT FOR THE SOUTHEAST COUNTIES. THE IS A POTENTIALLY VERY DANGEROUS SITUATION AND RESIDENTS ARE URGED TO CLOSELY MONITOR THE WEATHER. 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. 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 OR TUNE TO THE VOICE OF THE NATIONAL WEATHER SERVICE...NOAA WEATHER RADIO...OPERATING ON A FREQUENCY BETWEEN 162.400 MHZ AND 162.550 MHZ. 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 office that day
Everything else NWS Austin/San Antonio, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 11, 12:24 AM CDT | Flash Flood Warning | EWX | DeWitt | 5 hr |
| Sep 11, 5:09 AM CDT | Flash Flood Warning | EWX | DeWitt, Gonzales, Lavaca | 5 hr |
| Sep 11, 5:09 AM CDT | Flash Flood Warning | EWX | Karnes | 5 hr |
| Sep 11, 8:16 AM CDT | Flash Flood Warning | EWX | Wilson | 4 hr |
| Sep 11, 8:53 AM CDT | Flash Flood Warning | EWX | Bastrop, Lee, Travis, Williamson | 4 hr |
| Sep 11, 9:58 AM CDT | Flash Flood Warning | EWX | DeWitt, Karnes | 3 hr |
| Sep 11, 11:08 AM CDT | Flash Flood Warning | EWX | Guadalupe | 112 min |
| Sep 11, 11:16 AM CDT | Flash Flood Warning | EWX | Comal | 104 min |
| Sep 11, 11:23 AM CDT | Flash Flood Warning | EWX | Bexar | 3 hr |
| Sep 11, 12:22 PM CDT | Flash Flood Warning | EWX | Wilson | 98 min |
| Sep 11, 6:03 PM CDT | Flash Flood Warning | EWX | Fayette, Lee | 2 hr |
Nearby
Flash Flood Warnings in Texas, 1998Every flash flood warning in 1998
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.