Alert archive / Texas / Flash Flood Warnings in 2002

Flash Flood Warning 46, NWS Corpus Christi, TX

September 8, 2002Goliad County, Texas

NWS Corpus Christi, TX issued this flash flood warning at Sep 8, 2002, 8:44 AM CDT for Goliad 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
Sep 8, 2002, 8:44 AM CDT (13:44 UTC)
Expired
Sep 8, 2002, 10:45 AM CDT
In force
2 hr
Issued by
NWS Corpus Christi, TX
Area
Counties, with a storm outline in the text

County Goliad County, TX

The radar

The Corpus Christi radar (KCRP), 95 km from the middle of the area, began a volume at 13:45 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 12:00Z, 1.7 hours before the alert went out and 101 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 2002-09-08Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2633 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 2002-09-08The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 101 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
2633 J/kg
Mixed-layer CIN
-3 J/kg
Mixed-layer LCL
594 m above ground
0-6 km bulk shear
16 kt
0-1 km storm-relative helicity
101 m²/s²
0-3 km storm-relative helicity
212 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 081344
FFWCRP
TXC175-081545-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE CORPUS CHRISTI TX
845 AM CDT SUN SEP 8 2002

THE NATIONAL WEATHER SERVICE IN CORPUS CHRISTI HAS ISSUED A

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

* UNTIL 1045 AM CDT

* AT 845 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
  VERY HEAVY RAIN STRETCHING FROM GOLIAD TO 10 MILES EAST OF
  BERCLAIR TO NEAR BLANCONIA.  THIS BAND OF HEAVY RAIN WAS PART OF
  A LARGER AREA OF HEAVY RAIN AND EMBEDDED THUNDERSTORMS THAT WAS
  MOVING NORTHWARD ACROSS SOUTH TEXAS.  RAINFALL AMOUNTS SINCE
  MIDNIGHT ACROSS WESTERN AND CENTRAL GOLIAD COUNTY HAVE BEEN
  BETWEEN 3 AND 6 INCHES.  AN ADDITIONAL 1 TO 3 INCHES OF RAIN WILL
  BE POSSIBLE WITH THE CURRENT BAND OF HEAVY RAIN.

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 2892 9741 2884 9730 2886 9722 2878 9718
          2854 9716 2839 9738 2840 9744 2845 9749
          2846 9755 2854 9758 2854 9770 2867 9778
1 follow-up statement
000 
WGUS74 KCRP 081440
FFSCRP
TXC175-081600-

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE CORPUS CHRISTI TX
941 AM CDT SUN SEP 8 2002

...A FLASH FLOOD WARNING CONTINUES FOR GOLIAD COUNTIES UNTIL 1045 AM 
CDT...

AT 935 AM CDT...DOPPLER RADAR INDICATED A BAND OF HEAVY RAIN AND 
THUNDERSTORMS STRETCHING FROM EASTERN GOLIAD COUNTY SOUTHWARD TO 
CORPUS CHRISTI.  THE MOVEMENT OF THIS ENTIRE BAND WAS TO THE NORTH 
AT AROUND 20 MPH.  THIS WILL MEAN GOLIAD COUNTY WILL RECEIVE MORE 
HEAVY RAIN THIS MORNING.  RAINFALL ESTIMATES FOR THE COUNTY INDICATE 
THAT 3 TO 6 INCHES OF RAIN HAS ALREADY FALLEN ACROSS MUCH OF GOLIAD 
COUNTY.  AN ADDITIONAL 1 TO 4 INCHES OF RAIN IS POSSIBLE LATER THIS 
MORNING.

THIS WILL PRODUCE DANGEROUS FLOODING CONDITIONS.  THE TEXAS 
DEPARTMENT OF TRANSPORTATION HAS REPORTED THAT HIGHWAY 59 SOUTH OF 
GOLIAD BETWEEN FM1351 AND FM883 HAS BEEN REDUCED TO ONLY ONE LANE 
DUE TO HIGH WATER.  ADDITIONAL ROADS ARE LIKELY UNDER WATER IN MANY 
LOCATIONS IN GOLIAD COUNTY.  MOTORISTS SHOULD DRIVE WITH EXTREME 
CAUTION THIS MORNING.  ALTERNATE ROUTES WILL NEED TO BE MADE.  NEVER 
DRIVE THROUGH WATER OF UNKNOWN DEPTH.

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.

ADDITIONAL WARNINGS AND STATEMENTS MAY BE REQUIRED THROUGH THE DAY 
AS TROPICAL MOISTURE FROM FAY AFFECTS SOUTH TEXAS.

$$

MB

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 8, 3:35 AM CDT, 5 hours 9 minutes earlier.

Area forecast discussion, Sep 8, 3:35 AM CDT, 5 hours 9 minutes before
COASTAL BEND FORECAST DISCUSSION...ADDED CCF
NATIONAL WEATHER SERVICE CORPUS CHRISTI TX
335 AM CDT SUN SEP 8 2002

A STATIONARY RIDGE TO THE WEST AND NORTH OF TEXAS WILL KEEP THE
REMNANTS OF FAY ANCHORED OVER THE CWA. A CONSENSUS OF THE MODELS
SHOWS THE CENTER OF CIRCULATION WILL STALL OVER THE RIO GRANDE
PLAINS...PLACING THE COASTAL BEND IN A REGION OF STRONG DEEP
CONVERGENCE...BETWEEN THE SWLY WINDS TO THE SOUTH OF FAY AND
MODERATE SELY WINDS FROM THE GULF WATERS. THUNDERSTORMS HAVE ALREADY
ERRUPTED THIS MORNING IN THIS CONVERGENCE ZONE AIDED BY THE LEFT
EXIT REGION OF A 35-40KT UPPER JET...AND 30 KT SLY LOW LVL JET.
SEVERAL STORMS WERE SHOWING ROTATION IN MOD-STG LOW LVL SHEARED
ENVIRONMENT. WILL ISSUE AN SPS HIGHLIGHTING POTENTIAL FOR TROPICAL
FUNNELS TODAY. THIS PATTERN SHOWS LTL CHANGE THROUGH MON NGT. PWATS
WILL STEADILY RISE TO 2.50 INCHES THROUGH MON NGT AS THE SELY LOW
LVL FLOW BRINGS ADDITIONAL MOISTURE IN OFF THE GULF. THUS
CONSIDERING ALL FACTORS WILL EXPAND THE FFA TO COVER ALL OF OUR NRN
COUNTIES FROM LASALLE TO CALHOUN.

EXTENDED...THE UPPER TROF WILL FINALLY MOVE OUT TUE AS THE UPPER
RIDGE BUILDS SOUTH OVER THE STATE AND A TROF DEVELOPS ON THE EAST
COAST. A BACK DOOR COOL FRONT WILL PUSH THROUGH THE REGION TUE WHICH
SHOULD DRY US OUT. A MORE WESTERLY FLOW WILL BECOME ESTABLISHED OVER
THE CONUS TOWARD THE END OF THE WEEK...WITH A DISTURBANCE MOVING
THROUGH ON SAT. THE EXTENDED FCST IS IN GOOD SHAPE.

MARINE...FAY WL CONTINUE TO BE A SIGNIFICANT PLAYER IN THE FCST
THROUGH THE SHORT RANGE.  PERIODIC CONVECTION WL DEVELOP ON ITS ERN
PERIPHERY THROUGH MON AND AFFECT THE WATERS.  TNT APPEARS TO BE THE
BEST CONVECTIVE EPISODE WITH ALL THE MODELS ADVERTISING SOME DECENT
OMEGA/UPR DIV/MOISTURE CONV FIELDS.  THE SYNOPTIC PATTERN BEGINS TO
BREAK DOWN ON MON NIGHT AND TUE AS A S/WV MOVES INTO THE DEEP SOUTH
AND HELPS TO DRIVE A WK FNTL BOUNDARY SWD.  THE REMNANTS OF FAY
SHOULD EVENTUALLY BE PUSHED SWD INTO MEXICO BY MIDWEEK.  DRIER AIR
WL SLOLWLY MOVE IN FROM THE NORTHEAST AND FURTHER AID IN DIMINISHING
RAIN CHANCES.  WL GO WITH SCEC FOR TDA GIVEN THE LATEST OBS.  NO
FLAGS ARE EXPECTED.

CRP TT 090/078 090/078 088 5864
VCT TT 087/074 086/073 087 7+84
LRD TT 087/075 087/075 086 5556

.CRP...FFA TXZ229>234-244>247.

75/JM..SYN
80/MB..MESO/MARINE

In the hours before

Special weather statement, Sep 8, 3:50 AM CDT, 4 hours 54 minutes before
TXZ231>234-242>247-081445-

SEVERE WEATHER OUTLOOK
NATIONAL WEATHER SERVICE CORPUS CHRISTI TX
350 AM CDT SUN SEP 8 2002

...ISOLATED TORNADOES POSSIBLE THIS MORNING...

THERE IS A POTENTIAL FOR ISOLATED TORNADOES ACROSS THE COASTAL BEND
AND VICTORIA CROSSROADS AREA THIS MORNING. STRONG THUNDERSTORMS WILL
CONTINUE TO DEVELOP AND MOVE ACROSS THE REGION AROUND THE REMNANTS
OF TROPICAL DEPRESSION FAY.  BECAUSE OF THE STRONG WIND SHEAR IN THE
ATMOSPHERE...ISOLATED TORNADOES ARE POSSIBLE. THERE HAVE BEEN MANY
REPORTS OF FUNNEL CLOUDS FROM SHERIFF DEPUTIES IN LIVE OAK AND BEE
COUNTIES. THE STORMS WHICH PRODUCED THE FUNNELS WILL BE MOVING INTO
GOLIAD AND VICTORIA COUNTIES DURING THE NEXT SEVERAL HOURS. THE
THREAT FOR TORNADOES WILL PERSIST THROUGH THE MORNING HOURS...BEFORE
DIMINISHING.

IF A TORNADO WARNING IS ISSUED FOR YOUR LOCATION...TAKE SHELTER IN
THE CENTER OF YOUR HOME...USUALLY IN A CLOSET OR UNDER A WORKBENCH.

...STAY TUNED TO THE NATIONAL WEATHER SERVICE FOR THE LATEST
INFORMATION...

The office that day

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

IssuedProductOfficeCountiesLasted
Sep 8, 3:06 AM CDTTornado WarningCRPBee, Live Oak39 min
Sep 8, 3:47 AM CDTSpecial Marine WarningCRP118 min
Sep 8, 3:47 AM CDTSpecial Marine WarningCRP118 min
Sep 8, 4:03 AM CDTTornado WarningCRPGoliad42 min
Sep 8, 4:45 AM CDTTornado WarningCRPGoliad45 min
Sep 8, 5:56 AM CDTSpecial Marine WarningCRP2 hr
Sep 8, 6:43 AM CDTFlash Flood WarningCRPGoliad2 hr
Sep 8, 11:02 AM CDTFlash Flood WarningCRPGoliad88 min
Sep 8, 5:50 PM CDTFlash Flood WarningCRPBee3 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.