Alert archive / Texas / Flash Flood Warnings in 2002

Flash Flood Warning 15, NWS Corpus Christi, TX

July 5, 2002Duval County, McMullen County, Texas

NWS Corpus Christi, TX issued this flash flood warning at Jul 5, 2002, 12:36 AM CDT for Duval 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 5, 2002, 12:36 AM CDT (05:36 UTC)
Expired
Jul 5, 2002, 3:30 AM CDT
In force
3 hr
Issued by
NWS Corpus Christi, TX
Area
Counties, with a storm outline in the text

Counties Duval County, TX, McMullen County, TX

The radar

The Corpus Christi radar (KCRP), 113 km from the middle of the area, began a volume at 05:38 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.

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 00:00Z, 5.6 hours before the alert went out and 131 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 00:00Z on 2002-07-05Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2421 joules per kilogram.LCLEL10008507005003002001001 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 00:00Z on 2002-07-05The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 56 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
2421 J/kg
Mixed-layer CIN
-2 J/kg
Mixed-layer LCL
818 m above ground
0-6 km bulk shear
20 kt
0-1 km storm-relative helicity
56 m²/s²
0-3 km storm-relative helicity
53 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 050536
FFWCRP
TXC131-311-050830-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE CORPUS CHRISTI TX
1230 AM CDT FRI JUL 5 2002

THE NATIONAL WEATHER SERVICE IN CORPUS CHRISTI HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  NORTHERN DUVAL COUNTY IN TEXAS
  SOUTHERN MCMULLEN COUNTY IN TEXAS

* UNTIL 330 AM CDT

* AT 1230 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
  VERY HEAVY RAIN 11 MILES NORTH OF FREER...MOVING NORTH AT 5 MPH.
  RAINFALL TOTALS AS HIGH AS 2 INCHES CAN BE EXPECTED.

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 2782 9878 2781 9837 2841 9837 2836 9881

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 4, 8:30 PM CDT, 4 hours 6 minutes earlier.

Area forecast discussion, Jul 4, 8:30 PM CDT, 4 hours 6 minutes before
COASTAL BEND FORECAST DISCUSSION...UPDATED
NATIONAL WEATHER SERVICE CORPUS CHRISTI TX
830 PM CDT THU JUL 4 2002

RSM/ETA ENSEMBLES AND ETA/AVN SUGGEST THAT THE UPPER TROUGH AXIS MAY
SHIFT SLIGHTLY WESTWARD OVERNIGHT. NEVERTHELESS...EXPECT TRAINING
ECHOES TO CONTINUE ACROSS THE RIO GRANDE PLAINS OVERNIGHT. WL ADD
DUVAL AND MCMULLEN TO THE FLASH FLOOD WATCH AND INCREASE POPS OVER
PORTIONS OF THE CWFA.

.CRP...FLASH FLOOD WATCH FOR TONIGHT TXZ229-230-239-240.

87

In the hours before

Local storm report, Jul 4, 7:09 PM CDT, 5 hours 27 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE CORPUS CHRISTI,TX
709 PM CDT THU JUL 4 2002

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

615 PM    5 W ALICE                 TX   WIND DAMAGE
07/04/02   JIM WELLS                      TREES BLOWN DOWN ALONG
                                          STATE ROAD 44 BETWEEN
                                          ALICE AND SAN DIEGO.

WC

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 5, 1:17 AM CDTFlash Flood WarningCRPKleberg, Nueces3 hr
Jul 5, 2:38 AM CDTFlash Flood WarningCRPJim Wells, Live Oak2 hr
Jul 5, 3:03 AM CDTFlash Flood WarningCRPDuval3 hr
Jul 5, 3:39 AM CDTFlash Flood WarningCRPBee81 min
Jul 5, 5:06 AM CDTFlash Flood WarningCRPLa Salle, Live Oak, McMullen3 hr
Jul 5, 7:24 AM CDTFlash Flood WarningCRPLa Salle, McMullen3 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; radar from the NEXRAD Level II archive.