Alert archive / Texas / Flash Flood Warnings in 2006

Flash Flood Warning 2, NWS Austin/San Antonio, TX

March 29, 2006Lavaca County, Texas

NWS Austin/San Antonio, TX issued this flash flood warning at Mar 29, 2006, 4:40 PM CST for Lavaca 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
Mar 29, 2006, 4:40 PM CST (22:40 UTC)
Expired
Mar 29, 2006, 7:45 PM CST
In force
3 hr
Issued by
NWS Austin/San Antonio, TX
Area
Counties, with a storm outline in the text

County Lavaca County, TX

The radar

The Austin/San Antonio radar (KEWX), 125 km from the middle of the area, began a volume at 22:41 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 12:00Z, 10.7 hours before the alert went out and 176 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 2006-03-29Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 388 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 2006-03-29The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -11 square meters per square second.19395878Sfc1 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
388 J/kg
Mixed-layer CIN
-276 J/kg
Mixed-layer LCL
1744 m above ground
0-6 km bulk shear
53 kt
0-1 km storm-relative helicity
-11 m²/s²
0-3 km storm-relative helicity
105 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.2

Open this sounding in Storm Lab

The text

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

000 
WGUS54 KEWX 292242
FFWEWX
TXC285-300145-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
440 PM CST WED MAR 29 2006

THE NATIONAL WEATHER SERVICE IN AUSTIN SAN ANTONIO HAS ISSUED A

* FLASH FLOOD WARNING FOR THE FOLLOWING COUNTIES...
  LAVACA

* UNTIL 745 PM CST

* AT 429 PM CST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
  VERY HEAVY RAIN FROM A STRONG THUNDERSTORM LOCATED SOUTH OF
  HALLETTSVILLE BETWEEN YOAKUM AND SPEAKS. MOVEMENT WAS EAST AT
  5 TO 10 MPH. RAINFALL RATES WERE ESTIMATED AT 4 INCHES AN HOUR.

* LOCATIONS IN THE WARNING INCLUDE SPEAKS AND EZZELL.

WHEN WATER COVERS THE ROAD...TURN AROUND DONT DROWN. THE LIFE YOU
SAVE MAY BE YOUR OWN.

LAT...LON 2916 9698 2912 9686 2932 9661 2941 9670
      2934 9698

$$
5 follow-up statements
000 
WGUS74 KEWX 292302
FFSEWX

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
500 PM CST WED MAR 29 2006

TXC285-300145-
LAVACA TX-
500 PM CST WED MAR 29 2006

...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 745 PM CST FOR
LAVACA COUNTY...

AT 452 PM CST...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A STRONG THUNDERSTORM PRODUCING VERY HEAVY RAIN OVER SOUTHERN
LAVACA COUNTY. MOVEMENT WAS EAST SOUTHEAST AT 5 TO 10 MPH. RAINFALL
RATES WERE ESTIMATED AT 4 TO 6 INCHES AN HOUR JUST SOUTHEAST OF EZZELL.  

LOCATIONS IN THE WARNING INCLUDE SPEAKS AND EZZELL.

WHEN WATER COVERS THE ROAD...TURN AROUND DONT DROWN. THE LIFE YOU
SAVE MAY BE YOUR OWN.

LAT...LON 2916 9698 2912 9686 2932 9661 2941 9670
      2934 9698

$$
000 
WGUS74 KEWX 292332
FFSEWX

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
528 PM CST WED MAR 29 2006

TXC285-300145-
LAVACA TX-
528 PM CST WED MAR 29 2006

...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 745 PM CST FOR
LAVACA COUNTY...

AT 521 PM CST...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A STRONG THUNDERSTORM PRODUCING VERY HEAVY RAIN OVER SOUTHERN
LAVACA COUNTY. THE HEAVY RAINS WERE OCCURRING JUST SOUTHEAST OF
EZZELL. THE STORM WAS DRIFTING SOUTHEAST AT 5 MPH AND RAINFALL RATES
WERE ESTIMATED AT 4 INCHES AN HOUR. PEA SIZED HAIL HAS ALSO BEEN
REPORTED WITH THIS STORM. 

LOCATIONS IN THE WARNING INCLUDE SPEAKS AND EZZELL.

WHEN WATER COVERS THE ROAD...TURN AROUND DONT DROWN. THE LIFE YOU
SAVE MAY BE YOUR OWN.

LAT...LON 2916 9698 2912 9686 2932 9661 2941 9670
      2934 9698

$$
000 
WGUS74 KEWX 300002
FFSEWX

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
556 PM CST WED MAR 29 2006

TXC285-300145-
LAVACA TX-
556 PM CST WED MAR 29 2006

...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 745 PM CST FOR
LAVACA COUNTY...

AT 550 PM CST...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A THUNDERSTORM PRODUCING VERY HEAVY RAIN OVER SOUTHERN
LAVACA COUNTY. THE STORM HAS WEAKENED AND IS NEARLY STATIONARY.
THE HEAVIEST RAINS CONTINUE SOUTHEAST OF EZZELL.

4.5 INCHES OF RAINFALL HAS BEEN RECORDED AT THE EZZELL SCHOOL.
COUNTY AND PRIVATE ROADS SOUTHEAST OF EZZELL ARE LIKELY
EXPERIENCING FLOODING WHERE THEY CROSS THE NORMALLY DRY BRANCHES
OF THE LAVACA RIVER.  

LOCATIONS IN THE WARNING INCLUDE SPEAKS AND EZZELL.

WHEN WATER COVERS THE ROAD...TURN AROUND DONT DROWN. THE LIFE YOU
SAVE MAY BE YOUR OWN.

LAT...LON 2916 9698 2912 9686 2932 9661 2941 9670
      2934 9698

$$
000 
WGUS74 KEWX 300029
FFSEWX

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
626 PM CST WED MAR 29 2006

TXC285-300145-
LAVACA TX-
626 PM CST WED MAR 29 2006

...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 745 PM CST FOR
LAVACA COUNTY...

AT 618 PM CST...THUNDERSTORMS HAVE ENDED ACROSS LAVACA COUNTY. HOWEVER
RUNOFF MAY STILL BE CAUSING FLASH FLOODING SOUTHEAST OF EZZELL. DOPPLER
RADAR HAS ESTIMATED THAT 4 TO 6 INCHES OF RAINFALL FELL IN AND AROUND
EZZELL.  

LOCATIONS IN THE WARNING INCLUDE EZZELL.

DO NOT DRIVE WHERE WATER COVERS THE ROAD. TWO FEET OF RUSHING WATER
CAN CARRY AWAY MOST VEHICLES...INCLUDING SUVS AND PICKUPS. TURN
AROUND DONT DROWN.

LAT...LON 2916 9698 2912 9686 2932 9661 2941 9670
      2934 9698

$$
000 
WGUS74 KEWX 300102
FFSEWX

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
701 PM CST WED MAR 29 2006

TXC285-300111-
LAVACA TX-
701 PM CST WED MAR 29 2006

...THE FLASH FLOOD WARNING FOR LAVACA COUNTY IS CANCELLED...

THUNDERSTORMS HAVE ENDED ACROSS LAVACA COUNTY. NO REPORTS OF FLASH
FLOODING WERE RECEIVED. 

LAT...LON 2916 9698 2912 9686 2932 9661 2941 9670
      2934 9698

$$

Nearby

Flash Flood Warnings in Texas, 2006Every flash flood warning in 2006

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.