Alert archive / Texas / Flash Flood Warnings in 2002

Flash Flood Warning 23, NWS Corpus Christi, TX

July 14, 2002La Salle County, Texas

NWS Corpus Christi, TX issued this flash flood warning at Jul 14, 2002, 4:47 PM CDT for La Salle County, Texas. It was in force for 118 min. 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 14, 2002, 4:47 PM CDT (21:47 UTC)
Expired: Jul 14, 2002, 6:45 PM CDT
In force: 118 min
Issued by: NWS Corpus Christi, TX
Area: Counties, with a storm outline in the text

County La Salle 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

Del Rio, TX (KDRT), launched 12:00Z, 9.8 hours before the alert went out and 192 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: 1420 J/kg
Mixed-layer CIN: -57 J/kg
Mixed-layer LCL: 867 m above ground
0-6 km bulk shear: 2 kt
0-1 km storm-relative helicity: -79 m²/s²
0-3 km storm-relative helicity: -18 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 142147
FFWCRP
TXC283-142345-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE CORPUS CHRISTI TX
445 PM CDT SUN JUL 14 2002

THE NATIONAL WEATHER SERVICE IN CORPUS CHRISTI HAS ISSUED A

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

* UNTIL 645 PM CDT

* AT 445 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED   
VERY HEAVY RAIN OVER COTULLA.  THE AREA OF HEAVY RAIN WAS SLOWLY 
MOVING NORTH AT 5 MPH.  UP TO 3 TO 5 INCHES OF RAIN IS POSSIBLE 
THROUGH 7 PM THIS EVENING.

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 2817 9937 2832 9908 2863 9889 2864 9941

1 follow-up statement

000 
WGUS74 KCRP 142342
FFSCRP
TXC283-150000-

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE CORPUS CHRISTI TX
645 PM CDT SUN JUL 14 2002

...FLASH FLOOD WARNING FOR NORTHERN LASALLE HAS EXPIRED...

NATIONAL WEATHER SERVICE RADAR INDICATED THE HEAVY RAINFALL HAS 
ENDED ACROSS NORTHERN LASALLE COUNTY...AND THE FLOOD THREAT HAS 
DIMINISHED. SOME MINOR FLOODING MAY CONTINUE...BUT THE THREAT OF 
SERIOUS FLOODING HAS ENDED. THUS...THE FLASH FLOOD WARNING IS BEING 
ALLOWED TO EXPIRE.

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

$$

TR

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 14, 2:15 PM CDT, 2 hours 32 minutes earlier.

Area forecast discussion, Jul 14, 2:15 PM CDT, 2 hours 32 minutes before

COASTAL BEND FORECAST DISCUSSION
NATIONAL WEATHER SERVICE CORPUS CHRISTI TX
215 PM CDT SUN JUL 14 2002

ETA NOW MORE IN LINE WITH AVN...BRINGING 2+INCH PWATS ACROSS ALL OF
CWA FROM THE SOUTH. UPPER LEV TROF AXIS WILL DRAW MOISTURE FROM
PAC...WHILE MID/LOW LEVELS WILL BECOME INCREASINGLY S DRAWING
MOISTURE FROM MEX/S GULF. MODELS SHOW AN INCREASE TO 2
INCHES...MAINLY W AND NW CWA THIS EVENING (RADAR ALREADY SHOWING
DEVELOPMENT IN WEBB CO)...WITH THE POOL OF MOISTURE SHIFTING NW
OVERNIGHT. THEN ANOTHER MUCH LARGER AREA OF ABUNDANT MOIST ON MON.
NE CWA ALSO LOOKS GOOD FOR CHANCE OF RAIN TONIGHT...AS THAT AREA IS
CLOSER TO RRQ OF JET...MSAS ANALYSIS HAS GOOD THETA-E RIDGING...LIS
AND MOISTURE CONVERGE...WHICH SHOULD ALLOW CONVECTION TO THE N TO
SINK SWD INTO N CWA.

THUS...FFA LOOKS GOOD BEGINNING TONIGHT FOR N AND W CWA THEN ALL
AREAS MON. WILL ISSUE FFA WITH AFTERNOON PACKAGE...HEADLINING FFA
TONIGHT N AND W AND FFA MON SE CWA.

MODELS KEEP ABUNDANT MOIST AND UPPER TROF AXIS ACROSS THE REGION
THROUGH MON NIGHT AND TUE MORNING...ETA BEING MORE AGRESSIVE WITH
WETTER SCENARIO ON TUE...BEFORE UPPER TROF SHIFTS FARTHER N OF CWA
AND UPPER RIDGE/DRIER AIRMASS BEGINS TO BUILD ACROSS THE REGION.

IN ADDITION TO ABUNDANT MOISTURE AND VCNTY OF UPPER TROF...AREA WILL
BE UNDER INFLUENCE OF RRQ OF JET/OPTIMAL DIFFLUENCE
ALOFT...RESULTING IN POSSIBLE ISOL SVR...ALTHOUGH HVY
RAINFALL/FLOODING WILL BE MAIN THREAT.

BY THU...LATEST AVN RUN TAKES A TROP WAVE OVER BAY OF CAMPECHE INTO
MEX...WELL S OF TX. RIDGE WILL CONT TO KEEP LITTLE TO NO PRECIP THRU
NEXT WEEKEND WITH TEMPS NEAR CLIMO.

MARINE...SFC RIDGE OVER NORTH CENTRAL GULF COMBINED WITH LOW
PRESSURE ALONG THE RIO GRANDE WILL RESULT IN INCREASING WINDS AND
PRECIP OVER THE TX COASTAL WATERS THROUGH TUE. EXPECT SCEC
CONDITIONS TONIGHT AND MONDAY AND SCA CONDITIONS MONDAY NIGHT AND
TUESDAY. WINDS DIMINISH TUESDAY NIGHT AS THE LOW IN TX WEAKENS.
ATMOS DRIES OUT WED-FRI AS HIGH PRESSURE BUILDS OVER THE WRN
GULF...STEARING ELY WAVES WELL TO OUR SOUTH INTO MX.

PRELIMS FOLLOW...
CRP TE 077/088 078/089 077 36552
VCT TE 075/087 077/088 076 57552
LRD TE 078/090 078/091 078 57552

TE...81
JM...75

.CRP...FFA TXZ229>234-239>247 .

Nearby

Flash Flood Warnings in Texas, 2002 Every 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.