Alert archive / Texas / Flash Flood Warnings in 2005

Flash Flood Warning 23, NWS Corpus Christi, TX

September 11, 2005Nueces County, Texas

NWS Corpus Christi, TX issued this flash flood warning at Sep 11, 2005, 1:40 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: Sep 11, 2005, 1:40 PM CDT (18:40 UTC)
Expired: Sep 11, 2005, 3:45 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

The radar

The Corpus Christi radar (KCRP), 23 km from the middle of the area, began a volume at 18:39 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, 6.7 hours before the alert went out and 5 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: 2485 J/kg
Mixed-layer CIN: -6 J/kg
Mixed-layer LCL: 568 m above ground
0-6 km bulk shear: 7 kt
0-1 km storm-relative helicity: 24 m²/s²
0-3 km storm-relative helicity: 47 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 111843
FFWCRP
TXC355-112045-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE CORPUS CHRISTI TX
140 PM CDT SUN SEP 11 2005

THE NATIONAL WEATHER SERVICE IN CORPUS CHRISTI HAS ISSUED A

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

* UNTIL 345 PM CDT

* AT 138 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED   
THUNDERSTORMS WITH VERY HEAVY RAINFALL FROM CHAPMAN RANCH TO FLOUR 
BLUFF MOVING NORTHWEST...INTO THE SOUTH SIDE OF CORPUS CHRISTI.

RADAR HAS ESTIMATED WIDESPREAD AMOUNTS OF 1 INCH OF RAINFALL HAS 
OCCURRED WITH ISOLATED TOTALS OF 2 TO 3 INCHES. AN ADDITIONAL 1 TO 3 
INCHES WILL BE POSSIBLE OVER THE NEXT 2 HOURS ACROSS THE SOUTH SIDE 
OF CORPUS CHRISTI...AS WELL AS CHAPMAN RANCH AND FLOUR BLUFF.

EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF SMALL 
CREEKS AND STREAMS...HIGHWAYS AND UNDERPASSES. ADDITIONALLY...COUNTRY
ROADS AND FARMLANDS ALONG THE BANKS OF CREEKS...STREAMS AND OTHER LOW
LYING AREAS ARE SUBJECT TO FLOODING.

A FLASH FLOOD WARNING MEANS THAT FLOODING IS IMMINENT OR OCCURRING.
IF YOU ARE IN THE WARNING AREA MOVE TO HIGHER GROUND IMMEDIATELY.
RESIDENTS LIVING ALONG STREAMS AND CREEKS SHOULD TAKE IMMEDIATE
PRECAUTIONS TO PROTECT LIFE AND PROPERTY. DO NOT ATTEMPT TO CROSS
SWIFTLY FLOWING WATERS OR WATERS OF UNKNOWN DEPTH BY FOOT OR BY
AUTOMOBILE.

LAT...LON 2784 9749 2784 9749 2782 9738 2775 9738
      2770 9726 2761 9731 2759 9728 2765 9726
      2762 9721 2774 9714 2775 9711 2775 9711
      2774 9711 2758 9722 2756 9747

$$

JR

1 follow-up statement

000 
WGUS74 KCRP 111949
FFSCRP

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE CORPUS CHRISTI TX
245 PM CDT SUN SEP 11 2005

TXC355-111955-
NUECES-
245 PM CDT SUN SEP 11 2005

...THE FLASH FLOOD WARNING FOR EASTERN NUECES COUNTY HAS BEEN
CANCELLED...

AT 243 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR HAS INDICATED 
THE HEAVY RAINFALL THAT WAS OVER FLOUR BLUFF AND THE SOUTH SIDE OF 
CORPUS CHRISTI HAS WEAKENED. MODERATE RAINFALL WILL CONTINUE ACROSS 
NUECES COUNTY FOR THE NEXT HOUR...PRODUCING RAINFALL AMOUNTS OF 
AROUND 1/2 OF AN INCH.

MINOR FLOODING OF SOME CITY STREETS AND WELL AS PONDING OF WATER ON 
AREA ROADWAYS MAY STILL OCCUR. MOTORISTS SHOULD DRIVE WITH EXTREME 
CAUTION AND SLOW DOWN THIS AFTERNOON.


LAT...LON 2784 9749 2784 9749 2782 9738 2775 9738
      2770 9726 2761 9731 2759 9728 2765 9726
      2762 9721 2774 9714 2775 9711 2775 9711
      2774 9711 2758 9722 2756 9747

$$

JR

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 11, 10:40 AM CDT, 3 hours earlier.

Area forecast discussion, Sep 11, 10:40 AM CDT, 3 hours before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE CORPUS CHRISTI TX
1040 AM CDT SUN SEP 11 2005

.UPDATE...NO MAJOR UPDATES ARE NEEDED TO THE INHERITED FORECAST.
UNLIKE YESTERDAY...AXIS OF THE DEEPEST TROPICAL MOISTURE HAS
SITUATED ITSELF ACROSS S TX...AS OPPOSED TO YESTERDAY WHERE IT WAS
OVER THE GULF WATERS. AN AREA OF GOOD MOISTURE CONVERGENCE...AS WELL
AS A SFC THETA-E BOUNDARY...REMAINS SITUATED ALONG THE COAST.
NUMEROUS SHOWERS AND THUNDERSTORMS HAVE DEVELOPED FROM PORT ARANSAS
UP INTO REFUGIO COUNTY. WITH MOISTURE FLUX CONVERGENCE AXIS SITUATED
IN THIS AREA AND NOT MOVING MUCH...ALONG WITH DEEP LAYER SRLY
FLOW...TRAINING OF STORMS HAS BECOME AN ISSUE RESULTING IN A FEW
FLASH FLOOD WARNINGS. ALSO...GIVEN TROPICAL NATURE OF AIRMASS AND
CLOUD TOPS COOLING TO -70 TO -74 DEG C...HEAVY 1HR RAINFALL RATES
WILL OCCUR IN THIS AREA.

LIKE THE CURRENT GFS RUNS HANDLING OF THE QPF FOR THE REMAINDER OF
TODAY. WONT BE MAKING TOO MANY CHANGES TO POPS. TEMPS ON THE OTHER
HAND ARE GOING TO ONCE AGAIN BE VERY TRICKY FROM VICTORIA DOWN
THROUGH CORPUS CHRISTI...BENEATH THE CLOUDS AND RAIN. MAY LOWER
HIGHS A FEW DEGREES IN THIS AREA.

&&

.AVIATION...SCATTERED TO NUMEROUS RWS/TSTMS WILL CONT THRU AT LEAST
18Z FROM VCT TO RAS. IFR CONDS WILL OCCUR IN THE STRONGEST STORMS...
CURRENTLY ACROSS REFUGIO...ARANSAS AND SAN PATRICIO COUNTIES.
ELSEWHERE...SCT RWS/TSTMS WILL CONT TO DEVELOP HEADING INTO THE AFTN.

&&

.CRP WATCHES/WARNINGS/ADVISORIES...
TX...NONE.
GM...NONE.

&&

JR...SHORT-TERM

Hazardous weather outlook, Sep 11, 6:00 AM CDT, 7 hours 40 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE CORPUS CHRISTI TX
600 AM CDT SUN SEP 11 2005

GMZ230-235-250-255-270-275-TXZ229>234-239>247-112100-
ARANSAS-BAYS AND WATERWAYS FROM BAFFIN BAY TO PORT ARANSAS-
BAYS AND WATERWAYS FROM PORT ARANSAS TO PORT OCONNOR-BEE-CALHOUN-
COASTAL WATERS BAFFIN BAY TO PORT ARANSAS OUT 20 NM-
COASTAL WATERS PORT ARANSAS TO MATAGORDA SHIP CHANNEL OUT 20 NM-
DUVAL-GOLIAD-JIM WELLS-KLEBERG-LASALLE-LIVE OAK-MCMULLEN-NUECES-
REFUGIO-SAN PATRICIO-VICTORIA-
WATERS BAFFIN BAY TO PORT ARANSAS 20 TO 60 NM-
WATERS PORT ARANSAS TO MATAGORDA SHIP CHANNEL 20 TO 60 NM-WEBB-
600 AM CDT SUN SEP 11 2005

THIS HAZARDOUS WEATHER OUTLOOK IS FOR SOUTH TEXAS AND THE MIDDLE
TEXAS COASTAL WATERS.

.DAY ONE...TODAY AND TONIGHT

SCATTERED TO NUMEROUS SHOWERS AND THUNDERSTORMS WILL AFFECT PARTS OF
SOUTH TEXAS TODAY AND TONIGHT AS DEEP TROPICAL MOISTURE REMAINS IN
PLACE.  THE MAIN THREAT WITH THESE STORMS WILL BE LOCALLY HEAVY
RAINFALL.  WIDESPREAD RAINFALL AMOUNTS OF 1 TO 2 INCHES IS LIKELY
WITH ISOLATED HEAVIER AMOUNTS.  SOME FLOODING OF LOW LYING ROADS
IS POSSIBLE THROUGH TONIGHT.  NO ORGANIZED SEVERE WEATHER IS
EXPECTED AT THIS TIME.

.DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY

SCATTERED SHOWERS AND THUNDERSTORMS ARE EXPECTED MONDAY. THE MAIN
IMPACT FROM THESE SHOWERS AND STORMS WILL BE ISOLATED LOCALLY HEAVY
RAINFALL.  THERE IS A SLIGHT SHOWERS AND THUNDERSTORMS SHOWERS AND
THUNDERSTORMS TUESDAY THROUGH THURSDAY. AT THIS TIME...NO ORGANIZED
SEVERE WEATHER IS ANTICIPATED THROUGH THE PERIOD. NO HAZARDOUS
WEATHER IS ANTICIPATED ON FRIDAY AND SATURDAY.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS NOT EXPECTED.

91/86

In the hours before

Local storm report, Sep 11, 11:30 AM CDT, 2 hours 10 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE CORPUS CHRISTI TX
1130 AM CDT SUN SEP 11 2005

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

1115 AM     FLASH FLOOD      ROCKPORT                28.04N 97.05W
09/11/2005                   ARANSAS            TX   LAW ENFORCEMENT

            LOCAL LAW ENFORCEMENT REPORTED SEVERAL AREA ROADWAYS
            BEGINNING TO FLOOD. MOST NOTABLE WAS THE STATE HIGHWAY 35
            BYPASS AT MARKET STREET.

&&

RUNYEN

The office that day

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

Issued	Product	Office	Counties	Lasted
Sep 10, 8:20 PM CDT	Flash Flood Warning	CRP	Webb	3 hr
Sep 11, 9:29 AM CDT	Flash Flood Warning	CRP	Aransas, Refugio	2 hr
Sep 11, 10:16 AM CDT	Marine Weather Statement	CRP		3 hr
Sep 11, 11:23 AM CDT	Flash Flood Warning	CRP	Aransas	2 hr
Sep 11, 4:45 PM CDT	Flash Flood Warning	CRP	Webb	3 hr

Nearby

Flash Flood Warnings in Texas, 2005 Every flash flood warning in 2005

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.