Flash Flood Warning 198, NWS Austin/San Antonio, TX

Issued

Oct 18, 1998, 4:24 AM CDT (09:24 UTC)

Expired

Oct 18, 1998, 8:00 AM CDT

In force

4 hr

Issued by

NWS Austin/San Antonio, TX

Area

Whole counties

Counties DeWitt County, TX, Karnes County, TX

000 
TTAA00 KSAT 180927 RRA
FFWSAT
TXC123-255-181300-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
424 AM CDT SUN OCT 18 1998

THE NATIONAL WEATHER SERVICE IN AUSTIN/SAN ANTONIO HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  DEWITT COUNTY IN TEXAS
  KARNES COUNTY IN TEXAS

* UNTIL 800 AM CDT

* AT 420 PM CDT... NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
  THUNDERSTORMS WITH VERY HEAVY RAIN FROM FALLS CITY TO CUERO...
  MOVING MOVING SLOWLY NORTHEASTWARD BUT DEVELOPING SOUTHWARD.

* SHOWERS AND THUNDERSTORMS WITH HEAVY RAIN WERE DEVELOPING
  SOUTHWARD INTO DEWITT AND KARNES COUNTIES WITH RAINFALL RATES OF 1
  TO 3 INCHES PER HOUR.  THE SLOW MOVEMENT WILL RESULT IN RAINFALL
  AMOUNTS OF UP TO 3 TO 5 INCHES OVER THE NEXT FEW HOURS WITH FLASH
  FLOODING EXPECTED.

MOVE TO HIGHER GROUND IF FLOOD WATERS THREATEN.


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 FLOODING WHEN WATER BEGINS RISING. IT IS VERY DIFFICULT
AT NIGHT TO TELL HOW MUCH WATER IS ON ROADS. MOTORISTS SHOULD NOT
DRfIVE THROUGH WATER OF UNKNOWN DEPTH.

NWS Austin/San Antonio, TX wrote its last area forecast discussion before this flash flood warning went out at Oct 17, 8:20 PM CDT, 8 hours 4 minutes earlier.

COASTAL BEND FORECAST DISCUSSION
NATIONAL WEATHER SERVICE CORPUS CHRISTI TX
820 PM CDT SAT OCT 17 1998

MSTR CONTINUES TO ADVECT FM MADELINE ACRS MEXICO INTO TX. THIS MSTR
COMBINED WITH THE SFC FNT TO THE NORTH AND UPR DYNAMICS TO GENERATE
COPIOUS RAIN/TSTMS TDA JUST NORTH OF OUR CWA. NEVERTHELESS...
SCATTERED SHOWERS AND THUNDERSTORMS HAVE AFFECTED MAINLY THE CNTRL
AND ERN CWA TDA IN PART DUE TO THE RRQ OF THE UPR JET STREAK. THIS
STREAK IS PROGD BY ALL MODELS TO LIFT NEWD. THE AVN IS PREFERRED
ATTM SINCE COMPARISON WITH LAPS INDICATES THAT IT IS BETTER THAN NGM
AND ETA IN FCSTG THE SFC PRES FIELD OVR THE WRN CWA. THE AVN PROGD A
SFC LOW TO DVLP FM 00 TO 06 UTC OVR THE WRN CWA AND LAPS PRES PTNS
INDICATES SUCH. THUS EXPECT PCPN TO DVLP OVR THE WRN CWA TNGT.
WSR-88D IS BEGINNING TO INDICATE SUCH. AVN PROGS THE WRN CWA LOW TO
DMSH YET DRAGS THE SFC FNT INTO THE CWA SUN...AND KEEPS IT
QUASI-STATIONARY...WHICH WL ENHANCE CHANCE FOR SHOWERS AND
THUNDERSTORMS. SFC THETA-E VALUES ARE ALREADY GREATER THAN THAT
PROGD BY THE NGM/ETA/AVN. HIGH LOW LVL AND MID LVL MSTR WL LIKELY
RESULT IN COPIOUS RAINS OVR PTNS OF THE CWA SUN. NO CHGS TO CURRENT
PERIOD ATTM...HWR SUGGEST MENTION OF PSBL HVY RAIN IN THE ZNS FOR
SUN...AND CONSIDER PSBL ISSUANCE OF FFA.

87

Flash Flood Warnings in Texas, 1998Every flash flood warning in 1998

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.