Alert archive / Texas / Flash Flood Warnings in 1998

Flash Flood Warning 9, NWS Corpus Christi, TX

August 16, 1998Webb County, Texas

NWS Corpus Christi, TX issued this flash flood warning at Aug 16, 1998, 9:37 PM CDT for Webb 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: Aug 16, 1998, 9:37 PM CDT (02:37 UTC)
Expired: Aug 17, 1998, 12:35 AM CDT
In force: 3 hr
Issued by: NWS Corpus Christi, TX
Area: Whole counties

County Webb County, TX

The nearest sounding before it

Corpus Christi, TX (KCRP), launched 00:00Z, 2.6 hours before the alert went out and 196 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.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 2783 J/kg
Mixed-layer CIN: -52 J/kg
Mixed-layer LCL: 1047 m above ground
0-6 km bulk shear: 10 kt
0-1 km storm-relative helicity: 33 m²/s²
0-3 km storm-relative helicity: 44 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
TTAA00 KCRP 170236
FFWCRP
TXC479-170535-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE CORPUS CHRISTI TX
937 PM CDT SUN AUG 16 1998

THE NATIONAL WEATHER SERVICE IN CORPUS CHRISTI HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  EASTERN WEBB IN SOUTH CENTRAL TEXAS

* UNTIL 1235 AM CDT

* AT 930 PM CDT... NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  CLUSTER OF THUNDERSTORMS WITH VERY HEAVY RAIN LOCATED ALONG HIGHWAY
  44 SOUTHWARD TO MIRANDO CITY...MOVING SLOWLY NORTHEAST.

DOPPLER RADAR HAS INDICATED THAT 2 TO 4 INCHES OF RAIN HAVE FALLEN
ACROSS EASTERN WEBB COUNTY FROM HIGHWAY 44 SOUTHWARD TO MIRANDO
CITY.  COUNTY OFFICIALS REPORT FLOODED ROADWAYS IN MIRANDO CITY AND
BRUNI AND ALSO HIGHWAY 359 FROM 12 MILES EAST OF LAREDO TO THE WEBB-
DUVAL COUNTY LINE.

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
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.

NWS Corpus Christi, TX wrote its last area forecast discussion before this flash flood warning went out at Aug 16, 8:10 PM CDT, 1 hour 27 minutes earlier.

Area forecast discussion, Aug 16, 8:10 PM CDT, 1 hour 27 minutes before

COASTAL BEND FORECAST DISCUSSION
NATIONAL WEATHER SERVICE CORPUS CHRISTI TX
810 PM CDT SUN AUG 16 1998

CONVECTION WAS MORE WIDESPREAD TODAY AND WILL LIKELY SEE REPEAT ON
MONDAY.  HAD SEVERAL RAINFALL ESTIMATES TODAY OF 2 INCHES PLUS PER
HOUR.  WITH GROUND EXTREMELY DRY...ONLY MINOR PROBLEMS.  IF THE
GROUND WERE MOIST PROBLEMS WOULD BE MUCH WORSE  CURRENT 88D REF
SHOWING AN ABUNDANCE OF RW/TRW OVER FAR WESTERN SECTIONS OF THE CWA
AND MOVG N.  MAY SEE SOME ADDITIONAL FLOOD PROBLEMS OUT THERE WITH
NEW STORMS FORMING TO THE S AND TRAINING OVER THE SAME AREAS.

OVERALL THE H5 PATTERN IS FCST TO EVOLVE INTO ONE OF A WEST COAST
TROF AND RIDING DOMINATING ELSEWHERE.  THIS WOULD NORMALLY SIGNAL THE
RETURN TO A DRIER AND HOTTER PATTERN FOR THE FORECAST AREA.  THIS
TIME AROUND WE WILL CONTINUE TO HAVE A WEAK SHEAR AXIS OVER THE
REGION AND H5 LOW TO THE W BETWEEN LRD AND THE BIG BEND AREA.  THIS
WILL CONTINUE TO PROVIDE MOISTURE TO THE REGION...HEATING AND THE
SEABREEZE WILL PROVIDE THE LIFT AND THE END RESULT WILL BE WIDELY SCT
TO SCT RW/TRW INTO MID WEEK.  PWAT FCST TO REMAIN AT 2+ THRU 48 HRS.
00Z CRP SOUNDING SHOWED PWAT OF 2.10...CAPES OF 4700 J/KG...LI OF
-9...CAP OF 1.5 DEG C AND K INDEX OF 34.  WELCOMED RAINFALL LIKELY TO
CONTINUE WITH SOME DRYING TAKE PLACE BY LATE WEEK.

CONVECTIVE DEBRIS WILL MAINTAIN CLOUDS OF THE MID AND HIGH VARIETY
TONIGHT AND WILL MAKE SOME ADJUSTMENTS TO AFTERNOON FCST IN THIS
REGARD.  WINDS STAY GENERALLY SE...EXCEPT NEAR TSTMS WHERE THEY WILL
BE VARIABLE AND GUSTY.  TEMPS LOOK ON TRACK WITH THE CLOUDS NOT
ALLOWING FOR MUCH OF A COOL DOWN.  WOULD LIKE TO INCREASE POPS FOR
WEBB...LASALLE...MCMULLEN TO 60 PERCENT THRU MIDNIGHT...WITH THE
POTENTIAL FOR SOME RAIN TO BE HEAVY.

CHGS... (WESTERN COUNTIES)
.TONIGHT...CLOUDY WITH A 60 PERCENT CHANCE OF SHOWERS AND
THUNDERSTORMS THROUGH MIDNIGHT.  HEAVY RAINFALL IS POSSIBLE.  LOWS IN
THE UPPER 70S.  E/SE WIND 10 TO 15 MPH.

CRP/VCT
.TONIGHT...MOSTLY CLOUDY WITH A 20 PERCENT OF SHOWERS AND
THUNDERSTORMS.  LOWS IN THE UPPER 70S(VCT)...UPPER 70S TO NEAR
80(CRP).  SE WIND NEAR 10 MPH (CRP)...SE WIND 5 TO 10 MPH (VCT).

MSL..73..

In the hours before

Local storm report, Aug 16, 9:25 PM CDT, 12 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE CORPUS CHRISTI TX
925 PM CDT SUN AUG 16 1998

TIME(CDT)  .....CITY LOCATION.....STATE...EVENT/REMARKS...
           ....COUNTY LOCATION....

0600 PM    CALLIHAM                  TX   WIND DAMAGE
08/16/98   MCMULLEN                       POWER LINES DOWN AND
                                          SMALL METAL BUILDING BLOWN
                                          OVER. REPORTED BY LIzVE OAK
                                          COUNTY SHERIFF.

GARRARD/BUCHANAN

Local storm report, Aug 16, 9:25 PM CDT, 12 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE CORPUS CHRISTI TX
925 PM CDT SUN AUG 16 1998

TIME(CDT)  .....CITY LOCATION.....STATE...EVENT/REMARKS...
           ....COUNTY LOCATION....

0600 PM    CALLIHAM                  TX   WIND DAMAGE
08/16/98   MCMULLEN                       POWER LINES DOWN AND
                                          SMALL METAL BUILDING BLOWN
                                          OVER. REPORTED BY LIzVE OAK
                                          COUNTY SHERIFF.

GARRARD/BUCHANAN

The office that day

Everything else NWS Corpus Christi, TX issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Aug 16, 10:50 PM CDT	Flash Flood Warning	CRP	Duval	3 hr
Aug 17, 12:32 AM CDT	Flash Flood Warning	CRP	Webb	3 hr

Nearby

Flash Flood Warnings in Texas, 1998 Every 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.