Alert archive / Texas / Flash Flood Warnings in 2004

Flash Flood Warning 8, NWS Austin/San Antonio, TX

January 16, 2004Medina County, Williamson County, Texas

NWS Austin/San Antonio, TX issued this flash flood warning at Jan 16, 2004, 6:26 PM CST for Medina County, Williamson County, Texas. It was in force for 260 days. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued
Jan 16, 2004, 6:26 PM CST (00:26 UTC)
Expired
Oct 2, 2004, 11:45 AM CDT
In force
260 days
Issued by
NWS Austin/San Antonio, TX
Area
Counties, with a storm outline in the text

Counties Medina County, TX, Williamson County, TX

The radar

The Austin/San Antonio radar (KEWX), 101 km from the middle of the area, began a volume at 00:25 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

Del Rio, TX (KDRT), launched 00:00Z, 0.4 hours before the alert went out and 175 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, Del Rio, TX at 00:00Z on 2004-01-17Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 623 joules per kilogram.LCLLFCEL10008507005003002001001 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, Del Rio, TX at 00:00Z on 2004-01-17The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 41 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
623 J/kg
Mixed-layer CIN
-1 J/kg
Mixed-layer LCL
619 m above ground
0-6 km bulk shear
36 kt
0-1 km storm-relative helicity
41 m²/s²
0-3 km storm-relative helicity
61 m²/s²
Significant tornado parameter
0.1
Supercell composite
1.0

Open this sounding in Storm Lab

The text

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

000 
WGUS54 KEWX 170025
FFWSAT
TXC491-170330-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
626 PM CST FRI JAN 16 2004

THE NATIONAL WEATHER SERVICE IN AUSTIN SAN ANTONIO HAS ISSUED A

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

* UNTIL 930 PM CST

* AT 626 PM...WEATHER SERVICE DOPPLER RADAR INDICATED PATCHY VERY 
  HEAVY RAIN...MOVING NORTH AT 25 MPH.

RAINFALL RATES OF AROUND ONE INCH PER HOUR WERE NOTED.  THIS RAIN IS 
MAINTAIN LOCAL FLASH FLOOD CONDITIONS DUE TO SATURATED SOILS CAUSING 
RAPID RUNOFF.   THIS MAY BECOME A DANGEROUS SITUATION IF RAINFALL 
RATES INCREASE.  

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. IF YOUR VEHICLE STALLS, ABANDON IT IMMEDIATELY AND SEEK
HIGHER GROUND. LAT...LON 3072 9797 3044 9740 3052 9721 3092 9785

$$
1 follow-up statement
000 
WGUS54 KEWX 021352
FFWSAT
TXC325-021645-
/X.NEW.KEWX.FF.W.0008.041002T1351Z-041002T1645Z/
/0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
851 AM CDT SAT OCT 2 2004

THE NATIONAL WEATHER SERVICE IN AUSTIN SAN ANTONIO HAS ISSUED A

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

* UNTIL 1145 AM CDT

* AT 825 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED 
  VERY HEAVY RAIN FROM SHOWERS AND THUNDERSTORM OVER THE WARNED AREA.

* LOCATIONS IN THE WARNING INCLUDE LACOSTE...RIO MEDINA...MICO...
  HONDO...DHANIS AND CASTROVILLE.

LOCALLY HEAVY RAINS OF 1 TO 3 INCHES ARE EXPECTED IN THE NEXT FEW 
HOURS FROM SHOWERS AND THUNDERSTORMS.  THIS WILL CAUSE FLOODING AT 
LOW WATER CROSSINGS AND IN LOW LYING AREAS.

HEAVY RAINFALL WILL CAUSE FLOODING OF SMALL CREEKS AND STREAMS...
COUNTRY ROADS...AND FARMLAND ALONG THE BANKS OF CREEKS AND STREAMS.

FLASH FLOODING IS OCCURRING OR IS IMMINENT. MOST FLOOD DEATHS OCCUR
IN AUTOMOBILES. DO NOT ATTEMPT TO CROSS WATER COVERED AREAS. A LITTLE
OVER A FOOT OF WATER CAN CARRY AWAY MOST CARS AND TRUCKS. TURN AROUND
- DONT DROWN.

LAT...LON 2962 9941 2962 9899 2957 9899 2955 9897
      2956 9893 2968 9882 2935 9882 2933 9881
      2909 9882 2909 9941

$$

The office that day

Everything else NWS Austin/San Antonio, TX issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jan 16, 6:15 PM CSTFlash Flood WarningEWXBandera, Blanco, Gillespie, Kendall, Kerr, Medina260 days
Jan 16, 8:56 PM CSTFlash Flood WarningEWXBurnet, Comal, Llano260 days
Jan 16, 8:59 PM CSTFlash Flood WarningEWXBlanco, Travis, Williamson260 days

Nearby

Flash Flood Warnings in Texas, 2004Every flash flood warning in 2004

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.