Alert archive / Texas / Flash Flood Warnings in 2003

Flash Flood Warning 44, NWS Austin/San Antonio, TX

July 5, 2003Bexar County, Texas

NWS Austin/San Antonio, TX issued this flash flood warning at Jul 5, 2003, 6:50 AM CDT for Bexar 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: Jul 5, 2003, 6:50 AM CDT (11:50 UTC)
Expired: Jul 5, 2003, 9:45 AM CDT
In force: 3 hr
Issued by: NWS Austin/San Antonio, TX
Area: Counties, with a storm outline in the text

County Bexar County, TX

The radar

The Austin/San Antonio radar (KEWX), 61 km from the middle of the area, began a volume at 11:49 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, 11.8 hours before the alert went out and 221 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: 980 J/kg
Mixed-layer CIN: -5 J/kg
Mixed-layer LCL: 1120 m above ground
0-6 km bulk shear: 14 kt
0-1 km storm-relative helicity: -19 m²/s²
0-3 km storm-relative helicity: -2 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 KEWX 051151
FFWSAT
TXC029-051445-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
650 AM CDT SAT JUL 5 2003

THE NATIONAL WEATHER SERVICE IN AUSTIN SAN ANTONIO HAS ISSUED A

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

* UNTIL 945 AM CDT

* AT 648 AM...WEATHER SERVICE DOPPLER RADAR INDICATED VERY HEAVY RAIN
  VON ORMY AND SOMERSET ACROSS SAN ANTONIO TO SAINT HEDWIG AND CONVERSE
  ...MOVING NORTH AT 10 MPH. RAINFALL RATES OF 1 TO 2 INCHES PER HOUR
  WERE NOTED. RISES HAVE BEEN NOTED ALONG THE SAN ANTONIO RIVER.

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

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 2927 9879 2913 9842 2948 9820 2969 9841
          2966 9877

$$

3 follow-up statements

000 
WGUS74 KEWX 051252
FFSSAT
TXC029-051445-

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
751 AM CDT SAT JUL 5 2003

...A FLASH FLOOD WARNING CONTINUES FOR BEXAR COUNTY UNTIL 945 AM
CDT...

AT 749 AM...VERY HEAVY RAINFALL CONTINUES ACROSS MAINLY NORTHWESTERN 
BEXAR COUNTY. RAINFALL RATES OF 1 TO 2 INCHES PER HOUR CONTINUED 
WHICH WILL CAUSE STREAMS TO RISE.  THE SAN ANTONIO RIVER...SALADO 
CREEK...OLMOS CREEK...LEON CREEK...AND HELOTES CREEKS WILL CONTINUE 
TO RISE.   

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.

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.

$$

000 
WGUS74 KEWX 051355
FFSSAT
TXC029-051445-

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
843 AM CDT SAT JUL 5 2003

...A FLASH FLOOD WARNING CONTINUES FOR BEXAR COUNTY UNTIL 945 AM
CDT...

AT 845 AM...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED HEAVY 
RAINS CONTINUING OVER BEXAR COUNTY EXTENDING FROM NEAR HELOTES TO 
SAN GERONIMO AND LEON SPRINGS. RAINFALL RATES OF THREE QUARTERS OF 
AN INCH TO ONE AND ONE HALF INCHES PER HOUR WILL CONTINUE OVER THE 
NEXT HOUR. SAN ANTONIO INTERNATIONAL AIRPORT REPORTED 1.77 INCHES OF 
RAINFALL OVER THE PAST THREE HOURS. 

EXCESSIVE RUNOFF FROM HEAVY RAINS WILL CAUSE FLASH FLOODING OF SMALL 
CREEKS AND STREAMS..COUNTRY ROADS..NORMALLY DRY WASHES AND 
ARROYOS..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.

$$

000 
WGUS74 KEWX 051448
FFSSAT
TXC029-051545-

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
948 AM CDT SAT JUL 5 2003

...THE FLASH FLOOD WARNING FOR BEXAR COUNTY HAS EXPIRED...

NATIONAL WEATHER SERVICE RADAR INDICATED THE RAINFALL WAS ENDING AND
THE FLOOD THREAT WAS DIMINISHING. SOME MINOR FLOODING MAY CONTINUE...
BUT THE THREAT OF SERIOUS FLOODING HAS ENDED AND THE FLASH FLOOD
WARNING HAS EXPIRED.

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
Jul 5, 7:25 AM CDT	Flash Flood Warning	EWX	Medina, Uvalde	3 hr
Jul 5, 10:10 AM CDT	Flash Flood Warning	EWX	Medina, Uvalde	2 hr
Jul 5, 10:24 AM CDT	Flash Flood Warning	EWX	Frio, Zavala	3 hr
Jul 5, 11:57 AM CDT	Flash Flood Warning	EWX	Medina, Uvalde	2 hr
Jul 5, 1:26 PM CDT	Flash Flood Warning	EWX	Frio, Zavala	3 hr
Jul 5, 1:59 PM CDT	Flash Flood Warning	EWX	Medina, Uvalde	2 hr
Jul 5, 2:52 PM CDT	Flash Flood Warning	EWX	Dimmit, Maverick	113 min
Jul 5, 3:58 PM CDT	Flash Flood Warning	EWX	Frio, Medina, Uvalde, Zavala	4 hr

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.