Alert archive / Texas / Flash Flood Warnings in 1998

Flash Flood Warning 6, NWS Corpus Christi, TX

February 1, 1998Kleberg County, Texas

NWS Corpus Christi, TX issued this flash flood warning at Feb 1, 1998, 2:40 PM CST for Kleberg 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
Feb 1, 1998, 2:40 PM CST (20:40 UTC)
Expired
Feb 1, 1998, 6:00 PM CST
In force
3 hr
Issued by
NWS Corpus Christi, TX
Area
Whole counties

County Kleberg County, TX

The radar

The Corpus Christi radar (KCRP), 43 km from the middle of the area, began a volume at 20:43 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

The nearest sounding before it

Corpus Christi, TX (KCRP), launched 12:00Z, 8.7 hours before the alert went out and 47 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 1998-02-01Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 673 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 1998-02-01The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 6 square meters per square second.19395878Sfc1 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
673 J/kg
Mixed-layer CIN
-86 J/kg
Mixed-layer LCL
598 m above ground
0-6 km bulk shear
28 kt
0-1 km storm-relative helicity
6 m²/s²
0-3 km storm-relative helicity
15 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 012038
FFWCRP
TXC273-020000-
 
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE CORPUS CHRISTI TX
240 PM CST SUN FEB 1 1998
 
THE NATIONAL WEATHER SERVICE IN CORPUS CHRISTI HAS ISSUED A
FLASH FLOOD WARNING EFFECTIVE UNTIL  600 PM CST
FOR PEOPLE IN THE FOLLOWING COUNTY......
 
IN SOUTH CENTRAL TEXAS
 
   ...KLEBERG COUNTY
 
...HEAVY RAINFALL MOVING INTO KLEBERG COUNTY...
 
AT 235 PM CST CORPUS CHRISTI DOPPLER RADAR INDICATED A LARGE AREA OF
SCATTERED TO NUMEROUS SHOWERS AND THUNDERSTORMS FROM THE JIM WELLS
KLEBERG COUNTY LINE SOUTH INTO THE LOWER VALLEY.
 
THE SHOWERS AND THUNDERSTORMS WERE MOVING TO THE EAST AT 15 TO 20 MPH
AND WILL EFFECT AREAS FROM RIVERIA TO KINGSVILLE.  THE SHOWERS AND
THUNDERSTORMS WILL PRODUCE VERY HEAVY RAINFALL...WITH
FLOODING...DANGEROUS LIGHTNING...STRONG GUSTY WINDS AND SMALL HAIL.
 
THIS HEAVY RAIN WILL ONLY AGGRAVATE FLOODING PROBLEMS THAT OCCURRED
EARLIER TODAY.
 
A FLASH FLOOD WARNING MEANS THAT FLOODING IS IMMINENT. IT IS
IMPORTANT TO KNOW WHERE YOU ARE RELATIVE TO STREAMS...RIVERS...OR
CREEKS WHICH CAN BECOME KILLERS IN HEAVY RAINS. CAMPERS SHOULD AVOID
CAMPING ALONG STREAMS OR CREEKS DURING THREATENING RAINS. DO NOT PLAY
IN DRAINAGE BASINS OR OTHER AREAS WHICH HAVE BECOME FLOODED.
 
LENZ

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 Feb 1, 2:40 PM CST, 0 minutes earlier.

Area forecast discussion, Feb 1, 2:40 PM CST, 0 minutes before
COASTAL BEND FORECAST DISCUSSION
NATIONAL WEATHER SERVICE CORPUS CHRISTI TX
240 PM CST SUN FEB 01 1998

CONVECTIVE COMPLEX OVER S TX LOOKS TO PUSH OFF THE COAST BY 6PM
BRINGING AND END TO THE HVY RAIN AND SVR WX THREAT.  WILL NEED TO
KEEP FFA/SVR HEADLINED UNTIL 6PM.  WILL DROP FFA/SVR MENTION IN VCT
ZONE GROUP ALTOGETHER.  ATMOSPHERE SHOULD STABILIZE CONSIDERABLY
BEHIND THIS SYSTEM AS SFC BASED INSTABILITY IS LOST.  LATEST SPENES
REPORTED MENTIONED CLOUD TOP WARMING OVER OUR WRN COUNTIES.  BEST
CELLS ARE NOW PUSHING INTO JIM WELLS/KLEBERG.  SOME ELEVATED SH/TSRA
ARE STILL PSBL OVNT AS FINAL WV FROM UPPER S/W MOVES THRU.

NGM APPEARS TO HAVE A BETTER HANDLE ON NLY SFC WINDS.  COLD FRONT
SHOULD MV OFF THE COAST THIS EVENING IN WAKE OF TDYS CONVECTION.
LOW PRES IN THE NW GULF DEEPENS 4MBS MONDAY AFTN/NGT WITH CENTRAL
PRESSURE DOWN TO 996MBS FORCING DVLPMT OF STG NW-N WINDS OVER THE
COASTAL BEND DURING THE DAY.  WIND ADVISORIES MAY BE NEEDED MON AFTN.
SCAS WITH GUSTS TO GALE LOOKS GOOD FOR COASTAL WATERS MONDAY
AFTN/NIGHT.

MON-TUE FCST...DECREASING CLOUDS WITH RAIN ENDING EARLY
MONDAY...BECMG MOSTLY SUNNY AND WINDY IN AFTN. CLEAR AND COOL MONDAY
NIGHT.  SUNNY AND BREEZY TUESDAY WITH GRADIENT LETTING UP AS SFC LOW
MVS FURTHER AWAY.  WILL NOT ARGUE WITH A BLEND OF NGM/AVN GUIDANCE.

WRKZONES UNTIL BOX IS DROPPED...
CRP/LRD
...FLASH FLOOD WATCH IN EFFECT THIS EVENING...
...SVR BOX UNTIL 6PM...
.TNGT...M/C WITH CHC OF SH/TSRA...SOME POSSIBLY SVR WITH LCLY HVY
RAIN THIS EVENING.  N WINDS NR 15 MPH.
.MON...M/C WITH CHC OF SHOWERS...DECREASING CLOUDS AND WINDY.
N WINDS 20 TO 30 MPH AND GUSTY.  (N WINDS 15-25 MPH LRD)
.MON NGT...MOSTLY CLEAR AND COOL.  N WINDS DIMINISHING TO NR 15 MPH.
.TUE...SUNNY AND BREEZY.  NW WINDS 15 TO 20 MPH.

VCT
.TNGT...M/C WITH CHC OF SH/TSRA.  N WINDS 10 TO 15 MPH.
.MON...M/C WITH CHC OF SHOWERS...DECREASING CLOUDS AND WINDY.
N WINDS 20 TO 30 MPH AND GUSTY.
.MON NGT...MOSTLY CLEAR AND COOL.  N WINDS DIMINISHING TO 10 TO 15
MPH.
.TUE...SUNNY AND BREEZY.  NW WINDS 15 TO 20 MPH.

PRELIMS...
.CRP...050/068 043/076 6200
.VCT...048/066 041/074 3200
.LRD...048/070 042/072 4200

JM...075

The office that day

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

IssuedProductOfficeCountiesLasted
Feb 1, 9:15 AM CSTSevere Thunderstorm WarningCRPKleberg75 min
Feb 1, 10:26 AM CSTFlash Flood WarningCRPKleberg94 min
Feb 1, 11:02 AM CSTSevere Thunderstorm WarningCRPWebb73 min
Feb 1, 12:02 PM CSTFlash Flood WarningCRPWebb118 min
Feb 1, 1:43 PM CSTFlash Flood WarningCRPDuval3 hr
Feb 1, 2:25 PM CSTFlash Flood WarningCRPJim Wells3 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; radar from the NEXRAD Level II archive.