Alert archive / Texas / Flash Flood Warnings in 1998

Flash Flood Warning 8, NWS Corpus Christi, TX

August 6, 1998La Salle County, Texas

NWS Corpus Christi, TX issued this flash flood warning at Aug 6, 1998, 10:41 AM CDT for La Salle 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 6, 1998, 10:41 AM CDT (15:41 UTC)
Expired
Aug 6, 1998, 1:35 PM CDT
In force
3 hr
Issued by
NWS Corpus Christi, TX
Area
Whole counties

County La Salle County, TX

The nearest sounding before it

Corpus Christi, TX (KCRP), launched 12:00Z, 3.7 hours before the alert went out and 186 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-pSkew-T log-p diagram, Corpus Christi, TX at 12:00Z on 1998-08-06Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2237 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Corpus Christi, TX at 12:00Z on 1998-08-06The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 54 square meters per square second.1939Sfc1 km3 km6 km9 kmRMLM
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
2237 J/kg
Mixed-layer CIN
-4 J/kg
Mixed-layer LCL
677 m above ground
0-6 km bulk shear
19 kt
0-1 km storm-relative helicity
54 m²/s²
0-3 km storm-relative helicity
31 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 061541
FFWCRP
TXC283-061835-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE CORPUS CHRISTI TX
1041 AM CDT THU AUG 6 1998

THE NATIONAL WEATHER SERVICE IN CORPUS CHRISTI HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  LA SALLE IN SOUTH CENTRAL TEXAS

* UNTIL 135 PM CDT

* AT 1020 AM CDT... NATIONAL WEATHER SERVICE DOPPLER RADAR
  AND SPOTTERS INDICATED HEAVY RAIN FROM ARTESIA WELLS TO COTULLA
..
  SLOWLY DRIFTING EAST.

* DOPPLER RADAR INDICATED ESTIMATED RAINFALL AMOUNTS OF AROUND 3
  INCHES PER HOUR WITH ISOLATED AMOUNTS OF 5 INCHES OVER SOUTHERN
  LASALLE COUNTY. ADDITIONAL RAINFALL AMOUNTS OF 2 TO 3 INCHES ARE
  EXPECTED OVER THE NEXT SEVERAL HOURS.



 AREA RESIDENTS SHOULD MONITOR FLOOD CONDITIONS... AND BE PREPARED
 TO MOVE TO HIGHER GROUND... SHOULD FLOOD WATERS THREATEN. IF FLASH
 FLOODING IS OBSERVED... ACT QUICKLY. MOVE TO HIGHER GROUND TO
 ESCAPE FLOOD WATERS. DO NOT STAY IN AREAS SUBJECT TO FLOODING WHEN
 WATER BEGINS RISING. DO NOT PLAY IN DRAINAGE BASINS.

 PARKE

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 6, 9:40 AM CDT, 1 hour 1 minute earlier.

Area forecast discussion, Aug 6, 9:40 AM CDT, 1 hour 1 minute before
COASTAL BEND FORECAST DISCUSSION
NATIONAL WEATHER SERVICE CORPUS CHRISTI TX
940 AM CDT THU AUG 6 1998

KCRP DOPPLER RADAR INDICATED HEAVY RAIN IN SOUTHERN LASALLE COUNTY
WITH A SPOTTER REPORT IN ARTESIA WELLS INDICATING AMOUNTS FROM 2 TO 3
INCHES. SPOTTER WAS VERY HAPPY WITH NO FLOODING PROBLEMS AS OF YET.

MODELS INDICATE A SHORTWAVE SWINGING AROUND SOUTHERN PERIPHERY OF
UPPER LOW TOWARD S TX. IR SAT IMAGERY VERIFIES THIS NICELY. WITH A
CONTINUED UNSTABLE AIRMASS OVER CWA AND PLENTY OF MOIST...WILL KEEP
POPS AS THEY ARE. W AND N PORTIONS OF CWA HAVE THE BEST
DYNAMICS...THUS THE BEST CHANCE.

WINDS ARE ALL OVER THE PLACE BUT AGREE WITH MIDNIGHT SHIFT THAT WINDS
SHOULD BECOME MORE EASTERLY FOR THE LRD AREA AND SOUTHERLY FOR VCT BY
AFTERNOON. WILL NOT MAKE ANY CHANGES TO FORECAST ATTM.

TP...81

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 5, 7:12 PM CDTSevere Thunderstorm WarningCRPMcMullen28 min
Aug 6, 3:00 PM CDTTornado WarningCRPNueces45 min

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.