Alert archive / Texas / Flash Flood Warnings in 1998
Flash Flood Warning 149, NWS Austin/San Antonio, TX
NWS Austin/San Antonio, TX issued this flash flood warning at Sep 11, 1998, 7:00 PM CDT for Bexar 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 11, 1998, 7:00 PM CDT (00:00 UTC)
- Expired
- Sep 11, 1998, 10:00 PM CDT
- In force
- 3 hr
- Issued by
- NWS Austin/San Antonio, TX
- Area
- Whole counties
County Bexar County, TX
The nearest sounding before it
Corpus Christi, TX (KCRP), launched 00:00Z, 0.0 hours before the alert went out and 223 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
- 15 J/kg
- Mixed-layer CIN
- 0 J/kg
- Mixed-layer LCL
- 487 m above ground
- 0-6 km bulk shear
- 16 kt
- 0-1 km storm-relative helicity
- 28 m²/s²
- 0-3 km storm-relative helicity
- 60 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 112358 FFWSAT TXC029-120300- BULLETIN - EAS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX 700 PM CDT FRI SEP 11 1998 THE NATIONAL WEATHER SERVICE IN AUSTIN/SAN ANTONIO HAS ISSUED A * FLASH FLOOD WARNING FOR... BEXAR COUNTY IN SOUTH CENTRAL TEXAS * UNTIL 1000 PM CDT * AT 700 PM...A LARGE AREA OF RAIN WAS MOVING INTO NORTHEAST BEXAR COUNTY. THE AREA OF RAINFALL WILL MOVE ACROSS BEXAR COUNTY DURING THE NEXT FEW HOURS. RAINFALL RATES WITH THESE STORMS ARE NEAR ONE INCH. DUE TO RECENT RAINS FROM EARLIER TODAY...RUNOFF WILL BE RAPID...FLOODING LOW LYING AREAS...SECONDARY ROADS...CREEKS AND STREAMS. MOTORISTS ARE URGED TO USE EXTREME CAUTION. ROADS WILL BE SLICK...VISIBILITIES WILL BE REDUCED AND DRIVING CONDITIONS WILL BE DANGEROUS. ROADS MAY ALSO BE FLOODED AND MOTORISTS ARE ENCOURAGED NOT TO DRIVE ACROSS FLOODED ROADWAYS...THE WATER WILL BE DEEPER THAN IT LOOKS. * IF YOU ARE IN THESE AREAS... MOVE TO HIGHER GROUND. PLEASE DO NOT DRIVE THROUGH WATER COVERING THE ROAD. STREETS...SECONDARY ROADS...AND LOW WATER CROSSINGS ACROSS BEXAR COUNTY WILL BE VERY DANGEROUS THE NEXT FEW HOURS. MOTORISTS SHOULD AVOID TRAVEL IN THIS AREA IF POSSIBLE...AND UNDER NO CIRCUMSTANCES ENTER FLOODED STREETS AND CROSSINGS.
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 11, 6:00 PM CDT, 1 hour before
TXZ171>173-183>194-202>209-217>225-228-121100- HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX 600 PM CDT FRI SEP 11 1998 ...FRANCES NEARLY STATIONARY... ...TORRENTIAL RAINS POSSIBLE TONIGHT MAINLY OVER THE EASTERN HALF OF THE HILL COUNTRY AND SOUTH CENTRAL TEXAS... ...FLASH FLOOD WATCH IN EFFECT... THE CENTER OF TROPICAL STORM FRANCES WAS LOCATED ABOUT 20 MILES SOUTH-SOUTHWEST OF VICTORIA AT 4 PM...ACCORDING TO THE NATIONAL HURRICANE CENTER IN MIAMI. IT IS EXPECTED TO DRIFT SLOWLY NORTH OR NORTHWEST OVER THE NEXT DAY OR SO. AS WITH ANY TROPICAL SYSTEM...NIGHTTIME CORE RAINS REMAIN A DANGEROUS THREAT. THESE ARE THE TORRENTIAL DOWNPOURS WHICH OCCUR DURING THE NIGHT HOURS NEAR THE CENTER OF A TROPICAL LOW. AS THE LOW TRACKS SLOWLY NORTH OR NORTHWEST ACROSS SOUTH CENTRAL TEXAS AND THE EASTERN HILL COUNTRY...CORE RAINS COULD DEVELOP...WITH AMOUNTS OF 5 TO 10 INCHES POSSIBLE IN A SHORT AMOUNT OF TIME. THE EASTERN HILL COUNTRY...WITH ITS CHARACTERISTICALLY ROCKY NATURE...WILL EXACERBATE THE THREAT AS RAPID RUNOFF WILL RESULT IN DANGEROUS...LIFE THREATENING FLASH FLOODS. ALSO THE CITIES OF SAN ANTONIO AND AUSTIN WILL BE VERY SUSCEPTIBLE TO FLOODING DUE TO THE AMOUNT OF PAVED SURFACES. THE NATIONAL WEATHER SERVICE WARNS RESIDENTS OF THESE AREAS TO TAKE NECESSARY PRECAUTIONS TO PROTECT LIFE AND PROPERTY. IF YOU LIVE IN A LOW LYING OR FLOOD PRONE AREA...KEEP ABREAST OF THE LATEST WEATHER DEVELOPMENTS TONIGHT AND BE READY TO MOVE TO HIGHER GROUND IF FLASH FLOODING OCCURS OR A WARNING IS ISSUED. CAMPERS AND PEOPLE TEMPORARILY IN THE FLOOD PLAIN SHOULD BE AWARE THAT HEAVY RAIN AND FLOODING CONDITIONS CAN INUNDATE THE FLOOD PLAIN WITH TENS OF FEET OF TURBULENT FLOW IN LESS THAN AN HOUR IN FLASHY STREAMS. SECONDARY ROADS AND LOW BRIDGES WILL BE EXTREMELY DANGEROUS... ESPECIALLY ALONG THE ESCARPMENT TONIGHT. TRAVEL IS DISCOURAGED ACROSS THE THREATENED COUNTIES TONIGHT. 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 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. 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
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.