Alert archive / Texas / Flash Flood Warnings in 2003

Flash Flood Warning 35, NWS Austin/San Antonio, TX

June 13, 200310 counties in Texas

NWS Austin/San Antonio, TX issued this flash flood warning at Jun 13, 2003, 6:31 PM CDT for 10 counties in 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: Jun 13, 2003, 6:31 PM CDT (23:31 UTC)
Expired: Jun 13, 2003, 9:30 PM CDT
In force: 3 hr
Issued by: NWS Austin/San Antonio, TX
Area: Counties, with a storm outline in the text

Counties Bandera County, TX, Bexar County, TX, Blanco County, TX, Comal County, TX, Gillespie County, TX, Hays County, TX, Kendall County, TX, Kerr County, TX, Medina County, TX, Travis County, TX

The radar

The Austin/San Antonio radar (KEWX), 76 km from the middle of the area, began a volume at 23:31 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 12:00Z, 11.5 hours before the alert went out and 218 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: 3986 J/kg
Mixed-layer CIN: -55 J/kg
Mixed-layer LCL: 609 m above ground
0-6 km bulk shear: 46 kt
0-1 km storm-relative helicity: 93 m²/s²
0-3 km storm-relative helicity: 97 m²/s²
Significant tornado parameter: 2.3
Supercell composite: 9.4

Open this sounding in Storm Lab

The text

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

000 
WGUS54 KEWX 132331
FFWSAT
TXC019-029-031-091-171-209-259-265-325-453-140230-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
631 PM CDT FRI JUN 13 2003

THE NATIONAL WEATHER SERVICE IN AUSTIN SAN ANTONIO HAS ISSUED A

* FLASH FLOOD WARNING FOR THE FOLLOWING COUNTIES...
  TRAVIS
  GILLESPIE
  BLANCO
  HAYS
  KERR
  KENDALL
  COMAL
  BANDERA
  BEXAR
  MEDINA

* UNTIL 930 PM CDT

* AT 631 PM...WEATHER SERVICE DOPPLER RADAR INDICATED A LARGE AREA   
  OF VERY HEAVY RAIN DEVELOPING ALONG AND 50 MILES EITHER SIDE OF
  A JOHNSON CITY TO HONDO LINE. THIS AREA OF THUNDERSTORMS IS MOVING 
  EAST AT AROUND 20 MPH.  

THESE THUNDERSTORMS HAVE A POTENTIAL TO PRODUCE UP TO 3 INCHES OF 
RAIN THROUGH 8 PM. WITH UP TO 2 INCHES OF RAIN ALREADY RECEIVED OVER 
PARTS OF THE WARNED AREA...FLASH FLOODING IS IMMINENT OVER 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. 

DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE 
ROADWAY. THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO CROSS 
SAFELY. VEHICLES CAUGHT IN RISING WATER SHOULD BE ABANDONED QUICKLY. 
MOVE TO HIGHER GROUND.
 
LAT...LON 3040 9900 2923 9925 2928 9846 3045 9780
          3044 9879

$$

1 follow-up statement

000 
WGUS74 KEWX 140106
FFSSAT
TXC013-019-029-031-091-171-187-209-259-265-325-453-493-140230-

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
803 PM CDT FRI JUN 13 2003

...A FLASH FLOOD WARNING CONTINUES FOR TRAVIS...GILLESPIE...BLANCO...
HAYS...KERR...KENDALL...COMAL...BANDERA...BEXAR...AND MEDINA
COUNTIES UNTIL 930 PM CDT...
...A FLASH FLOOD WARNING CONTINUES FOR GUADALUPE...WILSON...AND
ATASCOSA COUNTYIES UNTIL 1100 PM CDT...

RAIN...HEAVY AT TIMES...WILL CONTINUE FROM SHOWERS AND 
THUNDERSTORMS FOR THE NEXT ONE TO TWO HOURS. 

EXCESSIVE RUNOFF FROM THIS STORM WILL CAUSE FLASH FLOODING OF SMALL
CREEKS AND STREAMS...LOW WATER CROSSINGS AND UNDERPASSES AS WELL AS
OTHER DRAINAGE AREAS AND LOW LYING AREAS.

EXCESSIVE RUNOFF FROM THIS STORM WILL CAUSE FLASH FLOODING OF SMALL 
CREEKS AND STREAMS...LOW WATER CROSSINGS...UNDERPASSESS...DRAINAGE
AREAS...COUNTRY ROADS...AS WELL AS FARMLAND ALONG THE BANKS OF 
CREEKS AND STREAMS.

DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE WATER COVERS THE ROAD.
VEHICLES CAUGHT IN RISING WATER SHOULD BE ABANDONED QUICKLY. MOVE TO
HIGHER GROUND. STAY TUNED TO LOCAL MEDIA OUTLETS FOR THE LATEST
WEATHER INFORMATION.

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 13, 10:08 AM CDT	Severe Thunderstorm Warning	EWX	Val Verde	37 min
Jun 13, 11:38 AM CDT	Severe Thunderstorm Warning	EWX	Val Verde	52 min
Jun 13, 3:16 PM CDT	Tornado Warning	EWX	Kendall	44 min
Jun 13, 3:46 PM CDT	Severe Thunderstorm Warning	EWX	Comal	59 min
Jun 13, 3:58 PM CDT	Severe Thunderstorm Warning	EWX	Hays	62 min
Jun 13, 4:15 PM CDT	Severe Thunderstorm Warning	EWX	Travis, Williamson	60 min
Jun 13, 4:32 PM CDT	Flash Flood Warning	EWX	Val Verde	118 min
Jun 13, 4:41 PM CDT	Severe Thunderstorm Warning	EWX	Bastrop, Caldwell, Guadalupe	64 min
Jun 13, 4:47 PM CDT	Severe Thunderstorm Warning	EWX	Kinney, Maverick	73 min
Jun 13, 5:18 PM CDT	Severe Thunderstorm Warning	EWX	Lee	57 min
Jun 13, 5:34 PM CDT	Severe Thunderstorm Warning	EWX	Fayette	56 min
Jun 13, 6:20 PM CDT	Severe Thunderstorm Warning	EWX	Zavala	40 min
Jun 13, 6:47 PM CDT	Severe Thunderstorm Warning	EWX	Medina	58 min
Jun 13, 6:51 PM CDT	Severe Thunderstorm Warning	EWX	Frio	54 min

Nearby

Flash Flood Warnings in Texas, 2003 Every flash flood warning in 2003

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.