Alert archive / Texas / Flash Flood Warnings in 2001

Flash Flood Warning 31, NWS Corpus Christi, TX

September 5, 2001McMullen County, Texas

NWS Corpus Christi, TX issued this flash flood warning at Sep 5, 2001, 9:40 PM CDT for 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 the Iowa Environmental Mesonet reconstructed for it; the warning itself named whole counties.

The facts

Issued
Sep 5, 2001, 9:40 PM CDT (02:40 UTC)
Expired
Sep 6, 2001, 12:45 AM CDT
In force
3 hr
Issued by
NWS Corpus Christi, TX
Area
Whole counties; the outline is the Mesonet’s reconstruction

County McMullen County, TX

The radar

The Corpus Christi radar (KCRP), 123 km from the middle of the area, began a volume at 02:44 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.

The nearest sounding before it

Corpus Christi, TX (KCRP), launched 00:00Z, 2.7 hours before the alert went out and 141 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 2001-09-06Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 3006 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 2001-09-06The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 42 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
3006 J/kg
Mixed-layer CIN
-1 J/kg
Mixed-layer LCL
749 m above ground
0-6 km bulk shear
17 kt
0-1 km storm-relative helicity
42 m²/s²
0-3 km storm-relative helicity
78 m²/s²
Significant tornado parameter
0.0
Supercell composite
2.1

Open this sounding in Storm Lab

The text

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

000 
WGUS54 KCRP 060238
FFWCRP
TXC311-060545-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE CORPUS CHRISTI TX
940 PM CDT WED SEP 5 2001

THE NATIONAL WEATHER SERVICE HAS ISSUED A

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

* UNTIL 1245 AM CDT

* AT 935 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
  VERY HEAVY RAIN 13 MILES SOUTH OF TILDEN...MOVING NORTHEAST AT 15
  MPH.

* SOME LOCATIONS AFFECTED INCLUDE....
  TILDEN...
  CROSS...

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 2809 9878 2809 9837 2862 9838 2862 9880

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 5, 9:35 PM CDT, 5 minutes earlier.

Area forecast discussion, Sep 5, 9:35 PM CDT, 5 minutes before
COASTAL BEND FORECAST DISCUSSION...UPDATED
NATIONAL WEATHER SERVICE CORPUS CHRISTI TX
935 PM CDT WED SEP 5 2001

AFTER FURTHER CONSIDERATION...WILL REMOVE FLASH FLOOD WATCH FOR
KLEBERG...NUECES...SAN PATRICIO...REFUGIO...ARANSAS...AND CALHOUN
COUNTIES AS EXPECT PRECIP...IF ANY TO CAUSE ISOLATED FLOOD PROBLEMS.
ALSO...WONT GO WITH FFA WITH POPS BELOW 50%.  WILL ISSUE FFS FOR
UPDATE. ZONES HAVE BEEN UPDATED.  PREVIOUS DISCUSSION BELOW.

------------------------------------------------------------------

FOR NOW...WILL MAKE UPDATES ONLY WHERE NECESSARY AND LEAVE PRECIP
FORECAST EASTERN SECTIONS INTACT AT THIS TIME...AS CONVECTION OVER
THE EASTERN SECTIONS (CRP/RKP ZONES) STILL HAS SOME SHOT IN GETTING
INTO AREA.  WILL UPDATE FOR LRD AREA FOR LOWER MINS AND MENTIONING
LESS ACTIVITY AFTER MIDNIGHT.

H20 LOOP NICELY SHOWS S/W CAUSING EVENING CONVECTION.  MOST OF THE
STRONGER STORMS SHOULD REMAIN NORTH OF CWFA...ALTHOUGH LOW LEVEL
CONVERGENCE COULD HELP STORMS DEVELOP FURTHER SOUTH AND EAST.

NO CHANGES TO LATER PERIODS.  NO SIG CHANGES TO MARINE FORECAST.

.CRP...FLASH FLOOD WATCH TXZ229>234-239>240 TONIGHT.

86/GW...73/MSL

In the hours before

Local storm report, Sep 5, 7:26 PM CDT, 2 hours 14 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE CORPUS CHRISTI,TX
726 PM CDT WED SEP 5 2001

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

0715 PM    ENCINAL                        FLOODING
09/06/01   LASALLE/WEBB                  REPORTED BY LOCAL SPOTTER
                                          2.2 INCHES OF RAIN IN LESS THAN
                                          1 HOUR. WATER ON ROAD.
Local storm report, Sep 5, 7:26 PM CDT, 2 hours 14 minutes before
PRELIMINARY LOCAL STORM REPORT...CORRECTED DATE
NATIONAL WEATHER SERVICE CORPUS CHRISTI,TX
726 PM CDT WED SEP 5 2001

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

0715 PM    ENCINAL                        FLOODING
09/05/01   LASALLE/WEBB                  REPORTED BY LOCAL SPOTTER
                                          2.2 INCHES OF RAIN IN LESS THAN
                                          1 HOUR. WATER ON ROAD.

The office that day

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

IssuedProductOfficeCountiesLasted
Sep 6, 11:14 AM CDTFlash Flood WarningCRPVictoria3 hr

Nearby

Flash Flood Warnings in Texas, 2001Every flash flood warning in 2001

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.