Alert archive / Texas / Flash Flood Warnings in 2005

Flash Flood Warning 24, NWS Corpus Christi, TX

September 11, 2005Webb County, Texas

NWS Corpus Christi, TX issued this flash flood warning at Sep 11, 2005, 4:45 PM CDT for Webb 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 as issued.

The facts

Issued: Sep 11, 2005, 4:45 PM CDT (21:45 UTC)
Expired: Sep 11, 2005, 7:45 PM CDT
In force: 3 hr
Issued by: NWS Corpus Christi, TX
Area: Counties, with a storm outline in the text

County Webb County, TX

The radar

The Laughlin AFB radar (KDFX), 185 km from the middle of the area, began a volume at 21:44 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.

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, 9.8 hours before the alert went out and 220 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 112149
FFWCRP
TXC479-120045-

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

THE NATIONAL WEATHER SERVICE IN CORPUS CHRISTI HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  WESTERN WEBB COUNTY IN SOUTH TEXAS

* UNTIL 745 PM CDT

* AT 442 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED   
  A NEARLY STATIONARY THUNDERSTORM WITH VERY HEAVY RAINFALL ACROSS   
  WESTERN WEBB COUNTY...WITH THE HEAVIEST RAINFALL OVER THE CITY     
  OF LAREDO. DOPPLER RADAR ESTIMATES OF 1 TO 2 INCHES HAVE ALREADY   
  OCCURED ACROSS THE AREA WITH AN ADDITIONAL 2 INCHES POSSIBLE.

* SLOW MOVING THUNDERSTORMS ARE PRODUCING TORRENTIAL RAINFALL IN THE
  WARNED AREA. RUNOFF FROM THIS EXCESSIVE RAINFALL WILL CAUSE
  FLOODING TO OCCUR. SOME LOCATIONS THAT WILL EXPERIENCE FLOODING
  INCLUDE...LAREDO...COLUMBIA BRIDGE...EL CENIZO...LAS TIENDAS...
  ORVIL AND RIO BRAVO.

EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF SMALL
CREEKS AND STREAMS...URBAN AREAS...HIGHWAYS...STREETS AND UNDERPASSES
AS WELL AS OTHER DRAINAGE AREAS AND LOW LYING SPOTS.

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.

TO REPORT FLOODING...HAVE THE NEAREST LAW ENFORCEMENT AGENCY RELAY
YOUR REPORT TO THE NATIONAL WEATHER SERVICE FORECAST OFFICE IN CORPUS
CHRISTI.

LAT...LON 2820 9940 2804 9940 2804 9933 2728 9907
      2728 9933 2731 9938 2726 9949 2731 9954
      2738 9950 2759 9954 2765 9961 2766 9972
      2777 9985 2798 9994 2818 10014 2819 10022

$$

94

1 follow-up statement

000 
WGUS74 KCRP 112318
FFSCRP

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

TXC479-112327-
WEBB-
617 PM CDT SUN SEP 11 2005

...THE FLASH FLOOD WARNING FOR WESTERN WEBB COUNTY HAS BEEN
CANCELLED...

THE THUNDERSTORMS RESPONSIBLE FOR THE HEAVY RAINFALL HAVE WEAKEND 
AND DRIFTED TO THE SOUTHWEST IN MEXICO.  

LAT...LON 2820 9940 2804 9940 2804 9933 2728 9907
      2728 9933 2731 9938 2726 9949 2731 9954
      2738 9950 2759 9954 2765 9961 2766 9972
      2777 9985 2798 9994 2818 10014 2819 10022

$$

94

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, 3:45 PM CDT, 1 hour earlier.

Area forecast discussion, Sep 11, 3:45 PM CDT, 1 hour before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE CORPUS CHRISTI TX
345 PM CDT SUN SEP 11 2005

.SHORT-TERM (TONIGHT THROUGH MONDAY)...NUMEROUS TO WIDESPREAD
SHOWERS AND THUNDERSTORMS ERUPTED ACROSS THE AREA TODAY. OUTFLOW
BOUNDARY HAS PUSHED SOUTH INTO BRO CWA AND EAST INTO THE NEARSHORE
WATERS. AIRMASS ACROSS THE COASTAL BEND AND VICTORIA REGION WAS
PRETTY WORKED OVER AND IS BECOMING LESS UNSTABLE...AND STRATIFORM
RAIN WHICH IS LEFT ACROSS THE COASTAL BEND WILL SLOWLY END THRU THE
EVENING. SCT RWS/TSTMS WILL CONT ACROSS THE GULF WATERS HEADING INTO
THE EVENING WHERE MOISTURE CONVERGENCE IS GOOD.

OUT FAR WEST...AIR MASS HAS DESTABILIZED AS TEMPS HAVE CLIMBED INTO
THE MID/UPR 90S. FOCUS THRU REMAINDER OF THE AFTN FOR STRONG STORMS
WILL BE ALONG AND WEST OF I-35.

WILL TAPER POPS BACK AFTER MIDNIGHT TO 30 PERCENT. DEEP TROPICAL
MOISTURE OF 2-2.2 PWS WILL REMAIN ACROSS S TX TOMORROW...AND
AIRMASS SHOULD RECOVER TO YIELD AT LEAST SCT CONVECTION.

&&

.AVIATION...SCT TSTMS WILL CONT THRU 02Z ALONG AND WEST OF A COT-LRD
LINE. IFR/MVFR CONDS POSSIBLE IN THESE STORMS. ALONG AND EAST OF A
VCT-ALI-BKS LINE AREAS OF RAIN AND ISOLD TSTMS WILL CONT THRU
00Z...THEN SLOWLY DIMINISH. IFR/MVFR CIGS AND VSBLTYS WILL OCCUR IN
PRECIP.

&&

.MARINE...SCATTERED SHOWERS AND THUNDERSTORMS WILL CONTINUE THRU THE
EARLY EVENING THEN DIMINISH. EXPECT RE-DEVELOPMENT OF SCATTERED
SHOWERS AND THUNDERSTORMS EARLY MONDAY MORNING. THE OFFSHORE FLOW
THAT HAS DEVELOPED ACROSS THE BAYS AND NEARSHORE WATERS WAS THE
RESULT OF AN OUTFLOW BOUNDARY. WEAK TO MODERATE ONSHORE FLOW WILL
RE-ESTABLISH ITSELF EARLY THIS EVENING.

&&

.LONG-TERM (MONDAY NIGHT THROUGH SUNDAY)...GFS/NOGAPS APPEAR TO
CONVERGE WITH RESPECT TO THE UPPER PATTERN...WITH BOTH SOLNS
CONFINING THE UPPER LOW TO SOUTH TX BY TUE. GOES SOUNDER DATA
ALREADY REVEALS LOWER PW VALUES NEAR THE SUBSIDENT SIDE OF THE UPPER
LOW OVER THE CNTRL GULF...WITH GREATER MSTR TO THE E/SE OF IT.
EXPECT DRYING CONDITIONS MON NGT-WED OWING TO THE FOREGOING
SUBSIDENT MOTION. WL FCST VERY LOW POPS TUE/WED AS A BALANCE BETWEEN
LARGER SCALE DRYING/SUBSIDENCE AND LOCAL MSTR CONVERGENCE. (THE
REGION IS PROGD TO BE UNDER THE VERTICAL ASCENT SIDE OF THE UPPER
LOW BY WED...HWR EXPECT MSTR TO BE LIMITED.) WL INCREASE THE CHANCE
FOR PCPN FOR THU OWING TO INCREASING MSTR. THE GFS/NOGAPS ARE
CONSISTENT WITH RESPECT TO THE BUILDING OF THE UPPER RIDGE OVER THE
REGION. WL FCST DRY CONDITIONS SAT/SUN. EXPECT SEAS TO REMAIN WELL
BELOW SCEC DRG THE PERIOD.

&&

.PRELIMINARY POINT TEMP/POPS

CORPUS CHRISTI  074 088 076 090 075 / 40 50 30 10 05
VICTORIA        072 089 075 092 074 / 30 40 30 10 05
LAREDO          077 096 078 094 077 / 50 40 40 05 10
ALICE           073 090 075 093 074 / 40 50 30 10 05
ROCKPORT        075 088 079 088 078 / 30 40 30 10 05
COTULLA         073 092 075 093 074 / 50 50 40 05 10

&&

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

&&

76...SHORT-TERM
87...LONG-TERM

Hazardous weather outlook, Sep 11, 6:00 AM CDT, 10 hours 45 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, 5 hours 15 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

Local storm report, Sep 11, 3:00 PM CDT, 1 hour 45 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE CORPUS CHRISTI TX
300 PM CDT SUN SEP 11 2005

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

0215 PM     LIGHTNING        FLOUR BLUFF             27.65N 97.30W
09/11/2005                   NUECES             TX   LAW ENFORCEMENT

            LAW ENFORCEMENT REPORTED 14 YR OLD GIRL POSSIBLY STRUCK
            BY LIGHTNING ON GRAHAM RD...AND HAS BEEN TRANSPORTED TO
            LOCAL HOSPITAL. NO MAJOR INJURIES WERE REPORTED.

&&

JR

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, 1:40 PM CDT	Flash Flood Warning	CRP	Nueces	2 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.