Alert archive / Texas / Flash Flood Warnings in 2002

Flash Flood Warning 44, NWS Corpus Christi, TX

August 14, 2002Nueces County, Texas

NWS Corpus Christi, TX issued this flash flood warning at Aug 14, 2002, 5:00 PM CDT for Nueces County, Texas. It was in force for 2 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: Aug 14, 2002, 5:00 PM CDT (22:00 UTC)
Expired: Aug 14, 2002, 7:00 PM CDT
In force: 2 hr
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 12:00Z, 10.0 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-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: 2456 J/kg
Mixed-layer CIN: -4 J/kg
Mixed-layer LCL: 590 m above ground
0-6 km bulk shear: 6 kt
0-1 km storm-relative helicity: -18 m²/s²
0-3 km storm-relative helicity: 96 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 142200
FFWCRP
TXC355-150000-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE CORPUS CHRISTI TX
458 PM CDT WED AUG 14 2002

THE NATIONAL WEATHER SERVICE IN CORPUS CHRISTI HAS ISSUED A

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

* UNTIL 700 PM CDT

* AT 452 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED   
  VERY HEAVY RAIN...FROM NEAR ROBSTOWN...EXTENDING SOUTHWEST TO      
  DRISCOLL AND BISHOP...SHOWING LITTLE MOVEMENT.  ADDITIONAL         
  RAINFALL AMOUNTS OF 1 TO 3 INCHES ARE LIKELY THROUGH 630 PM. 

EXCESSIVE RUNOFF FROM THIS STORM WILL CAUSE 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 FLOODING.

A FLASH FLOOD WARNING MEANS THAT FLOODING IS OCCURRING OR IS
IMMINENT. MOST FLASH FLOOD DEATHS OCCUR IN AUTOMOBILES. DO NOT
ATTEMPT TO CROSS BRIDGES...DIPS...OR OTHER LOW SPOTS IF WATER COVERS
THE ROADWAY. NEVER TRY TO CROSS A FLOWING STREAM...EVEN A SMALL
ONE...ON FOOT. TO ESCAPE RISING WATER MOVE UP TO HIGHER GROUND.

LAT...LON 2781 9794 2766 9794 2757 9782 2757 9766
          2790 9765 2793 9776

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 Aug 14, 2:45 PM CDT, 2 hours 15 minutes earlier.

Area forecast discussion, Aug 14, 2:45 PM CDT, 2 hours 15 minutes before

COASTAL BEND FORECAST DISCUSSION
NATIONAL WEATHER SERVICE CORPUS CHRISTI TX
245 PM CDT WED AUG 14 2002

DISCUSSION...OUTFLOW BOUNDARY ORIGINATING FROM ONGOING CONVECTION
ACROSS THE SAN PATRICIO/REFUGIO AREA THIS AFTERNOON CONTINUES TO
INTERSECT SEABREEZE FRONT TO THE SOUTHEAST..INITIATING ADDITIONAL
CONVECTION.  WEAK BOUNDARY LAYER AND ENVIRONMENTAL STEERING CURRENTS
PROMOTES LOCALLY HEAVY RAINFALL WITH THE POTENTIAL FOR URBAN
FLOODING THIS EVENING.  CONVECTION WILL AFFECT CENTRAL/WESTERN FA
THIS EVENING AS SEABREEZE PUSHES FARTHER INLAND.  MOISTURE PROFILES
DECREASE SLIGHTLY ON THURSDAY WITH A PULSE OF HIGHER PWAT EXPECTED
ON FRIDAY.  SFC PRESSURE GRADIENT WILL BE MODERATE..HOWEVER FLOW IN
THE LOWER BOUNDARY LAYER WILL REMAIN RELATIVELY WEAK PROMOTING
RELEASE OF LATENT INSTABILITY.  AREAL COVERAGE WILL BE LESS OVER THE
NEXT COUPLE OF DAYS WHEN COMPARED TO TODAY/THIS EVENING.
SUBTROPICAL RIDGE AXIS EXTENDING OVER THE GULF OF MEXICO WILL REMAIN
JUST TO THE EAST OF THE REGION AND SIMILAR SCENARIO OF LIGHT BLAYER
WINDS WILL ALLOW FOR ISOLATED CONVECTION DURING THE MORNING HOURS
ACROSS THE EASTERN COASTAL COUNTIES AND FARTHER INLAND ALONG THE
SEABREEZE FRONT THROUGH THE FORECAST CYCLE.  THE ONLY EXCEPTION WILL
BE THE FAR WESTERN COUNTIES..LASALLE/WEBB WHERE CROSS-SECTIONAL DATA
AND HISTORY OF SEABREEZE PROGRESSION OVER THE PAST FEW DAYS WILL
INHIBIT MENTION OF CONVECTION BEYOND THU EVENING.

MARINE...STRONG LOW-LEVEL JET/SURFACE PRESSURE GRADIENT WILL PRODUCE
SCEC/LOW-END SCA THROUGH THE PERIOD...ESPECIALLY TONIGHT THROUGH
FRIDAY. SUFFICIENT MOISTURE AND DYNAMICAL/BOUNDARY LAYER FORCING
SUPPORTS SCATTERED CONVECTION THROUGH THURSDAY MORNING. MARGINAL
MOISTURE/FORCING WILL RESULT IN ISOLATED CONVECTION THEREAFTER.

THE FORECAST NUMBERS ARE NEXT...
CRP EB 076/093 077/094 077 76522
VCT EB 075/091 076/093 076 76432
LRD BB 077/098 077/098 077 762-2=

BML.76 / BB.85

.CRP...SCA GMZ250-255-270-275.

In the hours before

Local storm report, Aug 14, 3:30 PM CDT, 1 hour 30 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE CORPUS CHRISTI,TX
330 PM CDT WED AUG 14 2002

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

0310 PM    2 N ROBSTOWN              TX   FLOODING
08/14/02   NUECES                         DPS REPORT OF WATER ON
                                          CR30 AND HIGHWAY 77
                                          WITH 1 MOTOR VEHICLE
                                          ACCIDENT DUE TO
                                          HYDROPLANING.

0315 PM    ROBSTOWN                  TX   FLOODING
08/14/02   NUECES                         FARMER REPORT OF
                                          FLOODING.

LAMARRE

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 14, 2:52 PM CDT	Flash Flood Warning	CRP	San Patricio	83 min
Aug 14, 3:28 PM CDT	Flash Flood Warning	CRP	Nueces	92 min

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.