Alert archive / Texas / Flash Flood Warnings in 2002

Flash Flood Warning 75, NWS Corpus Christi, TX

September 19, 2002Nueces County, Texas

NWS Corpus Christi, TX issued this flash flood warning at Sep 19, 2002, 11:07 PM CDT for Nueces County, Texas. It was in force for 113 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
Sep 19, 2002, 11:07 PM CDT (04:07 UTC)
Expired
Sep 20, 2002, 1:00 AM CDT
In force
113 min
Issued by
NWS Corpus Christi, TX
Area
Counties, with a storm outline in the text

County Nueces 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 00:00Z, 4.1 hours before the alert went out and 15 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 2002-09-20Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 3776 joules per kilogram.LCLEL10008507005003002001001 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 00:00Z on 2002-09-20The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 64 square meters per square second.193958Sfc1 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
3776 J/kg
Mixed-layer CIN
-3 J/kg
Mixed-layer LCL
748 m above ground
0-6 km bulk shear
24 kt
0-1 km storm-relative helicity
64 m²/s²
0-3 km storm-relative helicity
68 m²/s²
Significant tornado parameter
0.9
Supercell composite
4.7

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
WGUS54 KCRP 200407
FFWCRP
TXC355-200600-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE CORPUS CHRISTI TX
1105 PM CDT THU SEP 19 2002

THE NATIONAL WEATHER SERVICE IN CORPUS CHRISTI HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  NUECES COUNTY IN TEXAS

* UNTIL 100 AM CDT

* AT 1100 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR      
  INDICATED VERY HEAVY RAIN OVER CENTRAL NUECES COUNTY...
  FROM ROBSTOWN TO CORPUS CHRISTI AND MOVING SOUTH AT 30 MPH.

ADDITIONAL 1 TO 3 INCH RAINFALL AMOUNTS CAN BE EXPECTED ACROSS MUCH 
NUECES COUNTY.

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.

BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE
DANGERS OF FLOODS AND FLASH FLOODS. IF FLASH FLOODING IS OBSERVED ACT
QUICKLY. MOVE UP TO HIGHER GROUND TO ESCAPE FLOOD WATERS. DO NOT STAY
IN AREAS SUBJECT TO FLOODING WHEN WATER BEGINS RISING.

LAT...LON 2783 9739 2784 9760 2759 9768 2758 9740

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 Sep 19, 9:20 PM CDT, 1 hour 47 minutes earlier.

Area forecast discussion, Sep 19, 9:20 PM CDT, 1 hour 47 minutes before
COASTAL BEND FORECAST DISCUSSION
NATIONAL WEATHER SERVICE CORPUS CHRISTI TX
920 PM CDT THU SEP 19 2002

ACTIVE BURST OF CONVECTION THIS EVENING AHEAD OF THE SFC TROF.
EXPECT CONVECTION TO CONTINUE ALONG THE COAST THROUGH MIDNIGHT
BEFORE FINALLY MOVING OFFSHORE. CELL MERGERS OVER KENEDY COUNTY
COULD ROTATE UP THE COAST INTO EASTERN NUECES COUNTY...BRINGING
HEAVY RAIN...AND THE POTENTIAL FOR LOCALIZED FLOODING. WILL CONTINUE
TO WATCH THIS VERY CLOSELY. WILL DROP POPS BEHIND THE TROF.

9PM MSAS ANALYSIS SHOWS THE COLD FRONT ALONG A LINE FROM EAGLE PASS
TO AUSTIN LINE. 01Z RUC STILL BRINGS THE COLD FRONT TO THE COAST
BEFORE SUNRISE. DWPTS ARE IN THE 50S BEHIND THE FRONT.

MARINE...CWF IS IN GOOD SHAPE. MAINLY A SHORT TERM EVENT RIGHT NOW
WITH CONVECTION MOVING OFF THE COAST. WILL HANDLE THIS WITH SPECIAL
MARINE WARNINGS.

.CRP...NONE

75/81

In the hours before

Local storm report, Sep 19, 10:11 PM CDT, 56 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE CORPUS CHRISTI,TX
1011 PM CDT THU SEP 19 2002

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

1011 PM    5 NW HOLIDAY BEACH        TX   65 MPH TSTM WIND GUST
09/19/02   ARANSAS                        HAM OPERATOR REPORTED 65
                                          MPH WINDS WITH TREES DOWN
                                          IN COPANO COVE. FUNNEL
                                          CLOUD WAS ALSO
                                          OBSERVED.

JM

The office that day

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

IssuedProductOfficeCountiesLasted
Sep 19, 7:17 PM CDTFlash Flood WarningCRPDuval3 hr
Sep 19, 7:24 PM CDTSevere Thunderstorm WarningCRPDuval36 min
Sep 19, 7:24 PM CDTSevere Thunderstorm WarningCRPAransas4 hr
Sep 19, 7:39 PM CDTFlash Flood WarningCRPGoliad3 hr
Sep 19, 8:48 PM CDTFlash Flood WarningCRPKleberg3 hr
Sep 19, 9:05 PM CDTSpecial Marine WarningCRP55 min
Sep 19, 9:29 PM CDTSpecial Marine WarningCRP61 min
Sep 19, 9:50 PM CDTTornado WarningCRPRefugio25 min
Sep 19, 10:02 PM CDTFlash Flood WarningCRPBee, Refugio, San Patricio3 hr
Sep 19, 10:10 PM CDTSevere Thunderstorm WarningCRPDuval33 days
Sep 19, 10:15 PM CDTSpecial Marine WarningCRP60 min
Sep 19, 10:30 PM CDTSpecial Marine WarningCRP3 hr
Sep 19, 10:44 PM CDTSevere Thunderstorm WarningCRPNueces, San Patricio61 min
Sep 20, 12:00 AM CDTSpecial Marine WarningCRP2 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.