Alert archive / Texas / Flash Flood Warnings in 2002

Flash Flood Warning 33, NWS Corpus Christi, TX

July 15, 2002La Salle County, McMullen County, Texas

NWS Corpus Christi, TX issued this flash flood warning at Jul 15, 2002, 9:48 AM CDT for La Salle County, McMullen 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 outline as issued.

The facts

Issued
Jul 15, 2002, 9:48 AM CDT (14:48 UTC)
Expired
Jul 15, 2002, 12:45 PM CDT
In force
3 hr
Issued by
NWS Corpus Christi, TX
Area
Counties, with a storm outline in the text

Counties La Salle County, TX, McMullen County, TX

Did it verify

Not verified. The Iowa Environmental Mesonet's Cow found no qualifying storm report inside this flash flood warning while it was in force. That is not proof nothing happened: reports are thin where few people live.

Cow counts a report within 15 km of the polygon while the warning was in force: a tornado for a tornado warning; hail of 1 inch or more, a gust of 58 mph or more or wind damage for a severe thunderstorm warning; a flash flood report for a flash flood warning.

The nearest sounding before it

Corpus Christi, TX (KCRP), launched 12:00Z, 2.8 hours before the alert went out and 172 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 2002-07-15Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1885 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Corpus Christi, TX at 12:00Z on 2002-07-15The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 134 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
1885 J/kg
Mixed-layer CIN
-10 J/kg
Mixed-layer LCL
623 m above ground
0-6 km bulk shear
28 kt
0-1 km storm-relative helicity
134 m²/s²
0-3 km storm-relative helicity
389 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 
WGUS54 KCRP 151448
FFWCRP
TXC283-311-151745-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE CORPUS CHRISTI TX
945 AM CDT MON JUL 15 2002

THE NATIONAL WEATHER SERVICE IN CORPUS CHRISTI HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  LA SALLE COUNTY IN TEXAS
  MCMULLEN COUNTY IN TEXAS

* UNTIL 1245 PM CDT

* AT 940 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED  
  AN AREA OF HEAVY RAIN WITH EMBEDDED THUNDERSTORMS OVER LA SALLE    
  AND MCMULLEN COUNTIES. THESE STORMS ARE MOVING NORTHEAST AT 15     
  MPH.   ADDITIONAL RAINFALL AMOUNTS OF UP TO 2 INCHES               
  ARE EXPECTED OVER SOME AREAS.  THIS WILL ADD TO THE              
  SEVERAL INCHES OF RAIN ALREADY OBTAINED IN SPOTS.  

EXCESSIVE RUNOFF FROM THIS STORM WILL CAUSE FLASH FLOODING OF SMALL 
CREEKS AND STREAMS...HIGHWAYS AND UNDERPASSES. ADDITIONALLY...COUNTRY
ROADS AND FARMLANDS ALONG THE BANKS OF CREEKS AND STREAMS AND OTHER 
LOW LYING AREAS ARE SUBJECT TO FLASH FLOODING.  

DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE
ROADWAY. THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO CROSS
SAFELY. VEHICLES CAUGHT IN RISING WATER SHOULD BE ABANDONED QUICKLY.
MOVE TO HIGHER GROUND.

LAT...LON 2825 9932 2813 9918 2818 9848 2856 9842
          2859 9901
2 follow-up statements
000 
WGUS74 KCRP 151625
FFSCRP
TXC283-311-151715-

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE CORPUS CHRISTI TX
1115 AM CDT MON JUL 15 2002

...FLASH FLOOD WARNING CONTINUES FOR LA SALLE AND MCMULLEN COUNTIES 
UNTIL 1245 PM CDT...

AT 1110 AM...NATIONAL WEATHER DOPPLER RADAR INDICATED AN AREA OF 
RAIN WITH EMBEDDED THUNDERSTORMS OVER THE NORTHERN TWO THIRDS OF 
LA SALLE AND MCMULLEN COUNTIES.  THIS AREA IS EXPECTED TO DECREASE 
IN COVERAGE THROUGH EARLY AFTERNOON. AN ADDITIONAL INCH OF RAINFALL 
IS STILL POSSIBLE OVER THE WARNED AREA THROUGH 1230 PM.  

EXCESSIVE RUNOFF FROM THIS STORM WILL CAUSE FLASH FLOODING OF SMALL 
CREEKS AND STREAMS...HIGHWAYS AND UNDERPASSES. ADDITIONALLY...COUNTRY
ROADS AND FARMLANDS ALONG THE BANKS OF CREEKS AND STREAMS AND OTHER 
LOW LYING AREAS ARE SUBJECT TO FLASH FLOODING. 

STAY TUNED TO LOCAL MEDIA OUTLETS AND NOAA WEATHER RADIO FOR THE 
LATEST WEATHER INFORMATION.

$$

AP
000 
WGUS74 KCRP 151742
FFSCRP
TXC283-311-151800-

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE CORPUS CHRISTI TX
1235 PM CDT MON JUL 15 2002

...FLASH FLOOD WARNING FOR LA SALE AND MCMULLEN COUNTIES ALLOWED TO 
EXPIRE...

AT 1230 PM...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED AN 
AREA OF RAIN OVER EXTREME NORTHERN LA SALLE AND MCMULLEN COUNTIES.  
ADDITIONAL SHOWERS AND THUNDERSTORMS WEST OF THE COTULLA AREA IN 
DIMMIT COUNTY ARE EXPECTED TO WEAKEN DURING THE NEXT HOUR.  

SIGNIFICANT HEAVY RAINFALL IS NOT EXPECTED FOR AT LEAST THE NEXT 
HOUR.  THEREFORE...THE FLASH FLOOD WARNING FOR LA SALLE AND MCMULLEN 
COUNTIES HAS BEEN ALLOWED TO EXPIRE.

STAY TUNED TO LOCAL MEDIA OUTLETS AND NOAA WEATHER RADIO FOR THE 
LATEST WEATHER INFORMATION.

$$

AP

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 Jul 15, 2:38 AM CDT, 7 hours 10 minutes earlier.

Area forecast discussion, Jul 15, 2:38 AM CDT, 7 hours 10 minutes before
COASTAL BEND FORECAST DISCUSSION
NATIONAL WEATHER SERVICE CORPUS CHRISTI TX
238 AM CDT MON JUL 15 2002

AN ACTIVE WX PATTERN IS IN STORE FOR SOUTH TX THROUGH TUE.  SOUTH TX
WL CONTINUE TO HAVE A DECENT DIFLUENT PATTERN IN THE UPR LVLS.  THIS
WL BE FURTHER ENHANCED BY THE RRQ OF A JET STREAK MOVING THROUGH
NERN TX.  ALSO...FAVORABLE DYNAMICS WL BE COMING FROM AN IMPRESSIVE
UPR LOW/VORT MAX CURRENTLY IN NERN MEXICO.  THE LATTER APPEARS TO BE
MAINLY RESPONSIBLE FOR THE CURRENT MCSS AFFECTING THE NWRN PART OF
THE CWFA.  THIS UPR LOW IS PROGGED TO REMAIN TO OUR WEST THROUGH
TUE.  MEANWHILE...PWS WL BE SURGING EVEN HIGHER AND WL REACH 2.2 TO
2.4 INCHES IN MANY AREAS.  SATL IMAGERY AND THE MODELS HAVE PICKED
UP ON ANOTHER SLUG OF MOISTURE FROM THE SRN GULF WHICH WL AFFECT THE
CWFA LATER TDA.  ON TOP OF THIS...THERE IS A WK SFC BOUNDARY
STRETCHING FROM VCT TO SWWD TO TO THE SOUTH OF LRD.  THIS FEATURE
SHOULD TEND TO MOVE SLOWLY EWD TDA.  ALL OF THESE PARAMETERS WL KEEP
THE HEAVY RAIN/FLOODING THREAT GOING THROUGH TUE.  THUS...THE FFA WL
BE CONTINUED AND EXTENDED THROUGH TUE TO COVER THE ENTIRE CWFA.

WL BE A BIT MORE PESSIMISTIC FOR THE PERIOD TUE NIGHT AND WED.  BLV
THE ETA SOLN IS HANDLING THE SYNOPTIC FEATURES...ESPECIALLY THE UPR
LOW IN MEXICO BETTER THAN THE AVN.  THE AVN LOOKS TO BE A BIT TOO
AGGRESSIVE WITH DRYING US OUT SO QUICKLY.  AFTER WED...WL NOT MAKE
ANY CHANGES TO THE PREV FCST TREND.

MARINE...MODERATE TO STRONG ONSHORE FLOW WL CONTINUE THROUGH THE
SHORT RANGE FCST.   WL MAINTAIN SCTD TO NUM SHRAS/TSRAS IN THE FCST
FOR THE SAME REASONS NOTED ABV.  THINGS BEGIN TO SLOWLY IMPROVE BY
WED WITH GENERALLY MORE TRANQUIL CONDITIONS AFTER THAT.

PRELIMS FOLLOW...
CRP TT 088/077 084/078 091 56642
VCT TT 086/074 082/076 089 88853
LRD TT 086/075 084/077 088 77653
NGP TT 087/079 086/080 089 56642

MB(80)...SYNOPTIC
GW(86)...MESO/MARINE

.CRP...FLASH FLOOD WATCH FOR TXZ229>234-239>247 THROUGH TUE.

In the hours before

Local storm report, Jul 15, 4:38 AM CDT, 5 hours 10 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE CORPUS CHRISTI,TX
438 AM CDT MON JUL 15 2002

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

0407 AM    2 N LOMA ALTA             TX   FLOOD
07/15/02   MCMULLEN                       FM624 IS FLOODED.
Local storm report, Jul 15, 5:25 AM CDT, 4 hours 23 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE CORPUS CHRISTI,TX
525 AM CDT MON JUL 15 2002

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

0518 AM    2 N LOMA ALTA             TX   FLOOD
07/15/02   MCMULLEN                       FM624 BETWEEN HIGHWAYS 59
                                          AND 16 IS CLOSED DUE TO
                                          HIGH WATER.

0518 AM    1 N FREER                 TX   FLOOD
07/15/02   DUVAL                          HIGHWAY 16 IS CLOSED DUE
                                          TO HIGH WATER.
Local storm report, Jul 15, 6:52 AM CDT, 2 hours 56 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE CORPUS CHRISTI,TX
652 AM CDT MON JUL 15 2002

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

0652 AM    CLEGG                     TX   FLOOD
07/15/02   LIVE OAK                       SEVERAL ROADS HAVE BEEN
                                          REPORTED CLOSED DUE
                                          TO HIGH WATER IN SOUTHERN
                                          LIVE OAK COUNTY.

0700 AM    SEVEN SISTERS             TX   FLOOD
07/15/02   DUVAL                          HIGHWAY 2359 IS CLOSED DUE
                                          TO HIGH WATER.

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 14, 9:22 PM CDTFlash Flood WarningCRPMcMullen113 min
Jul 14, 11:14 PM CDTFlash Flood WarningCRPMcMullen2 hr
Jul 15, 1:04 AM CDTSevere Thunderstorm WarningCRPLive Oak41 min
Jul 15, 1:04 AM CDTSevere Thunderstorm WarningCRPJim Wells, Nueces21 days
Jul 15, 1:15 AM CDTTornado WarningCRPLive Oak45 min
Jul 15, 1:24 AM CDTFlash Flood WarningCRPLive Oak, McMullen3 hr
Jul 15, 3:33 AM CDTFlash Flood WarningCRPBee, Live Oak3 hr
Jul 15, 3:57 AM CDTFlash Flood WarningCRPDuval, Jim Wells, Webb3 hr
Jul 15, 4:20 AM CDTFlash Flood WarningCRPMcMullen115 min
Jul 15, 6:00 AM CDTFlash Flood WarningCRPVictoria3 hr
Jul 15, 6:31 AM CDTFlash Flood WarningCRPLive Oak3 hr
Jul 15, 6:47 AM CDTFlash Flood WarningCRPDuval, Webb3 hr
Jul 15, 1:10 PM CDTSpecial Marine WarningCRP2 hr
Jul 15, 1:10 PM CDTSpecial Marine WarningCRP2 hr
Jul 15, 1:50 PM CDTFlash Flood WarningCRPLa Salle3 hr
Jul 15, 3:52 PM CDTFlash Flood WarningCRPDuval3 hr
Jul 15, 4:57 PM CDTFlash Flood WarningCRPMcMullen3 hr

Nearby

Flash Flood Warnings in Texas, 2002Every flash flood warning in 2002

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.