Alert archive / Texas / Flash Flood Warnings in 2003
Flash Flood Warning 79, NWS Austin/San Antonio, TX
NWS Austin/San Antonio, TX issued this flash flood warning at Sep 5, 2003, 2:55 PM CDT for Atascosa County, Wilson 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 5, 2003, 2:55 PM CDT (19:55 UTC)
- Expired
- Sep 5, 2003, 6:00 PM CDT
- In force
- 3 hr
- Issued by
- NWS Austin/San Antonio, TX
- Area
- Counties, with a storm outline in the text
Counties Atascosa County, TX, Wilson County, TX
The radar
The Austin/San Antonio radar (KEWX), 92 km from the middle of the area, began a volume at 19:57 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, 7.9 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.
- Mixed-layer CAPE
- 1835 J/kg
- Mixed-layer CIN
- -19 J/kg
- Mixed-layer LCL
- 611 m above ground
- 0-6 km bulk shear
- 7 kt
- 0-1 km storm-relative helicity
- -13 m²/s²
- 0-3 km storm-relative helicity
- -11 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000
WGUS54 KEWX 051957
FFWSAT
TXC013-493-052300-
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
255 PM CDT FRI SEP 5 2003
THE NATIONAL WEATHER SERVICE IN AUSTIN SAN ANTONIO HAS ISSUED A
* FLASH FLOOD WARNING FOR THE FOLLOWING COUNTIES...
WILSON
ATASCOSA
* UNTIL 600 PM CDT
* AT 255 PM...WEATHER SERVICE DOPPLER RADAR INDICATED VERY HEAVY RAIN
OVER SOUTHEAST WILSON COUNTY AND OVER NORTHERN ATASCOSA. THESE
AREAS ARE EXPECTED TO MERGE OVER ATASCOSA OVER THE NEXT HOUR AND
PRODUCE 1 TO 2 INCHES OF RAIN OVER THE NEXT COUPLE OF HOURS.
EXCESSIVE RUNOFF FROM THIS STORM WILL CAUSE FLASH FLOODING OF 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.
LAT...LON 2868 9876 2870 9838 2910 9798 2933 9815
2905 9840 2926 9879
$$2 follow-up statements
000 WGUS74 KEWX 052137 FFSSAT TXC013-493-052300- FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX 437 PM CDT FRI SEP 5 2003 ...A FLASH FLOOD WARNING CONTINUES FOR WILSON AND ATASCOSA COUNTIES UNTIL 600 PM CDT... AT 435 PM...THE HEAVIEST RAINFALL WAS ALONG THE ATASCOSA COUNTY LINE WITH MCMULLEN AND LIVE OAK COUNTIES WITH RAINFALL RATES OF 1 TO 2 INCHES PER HOUR. THIS RAIN WAS MOVING SOUTH AND WILL EXIT ATASCOSA COUNTY BY 5 PM. HOWEVER...LIGHT RAIN WILL PERSIST AND STREAMS WILL CONTINUE TO RISE FOR THE NEXT HOUR OR SO WITH LOW LYING AREAS AND LOW WATER CROSSINGS FLOODED. DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE WATER COVERS THE ROAD. VEHICLES CAUGHT IN RISING WATER SHOULD BE ABANDONED QUICKLY. MOVE TO HIGHER GROUND. STAY TUNED TO LOCAL MEDIA OUTLETS FOR THE LATEST WEATHER INFORMATION. $$
000 WGUS74 KEWX 052310 FFSSAT TXC013-493-060000- FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX 608 PM CDT FRI SEP 5 2003 ...THE FLASH FLOOD WARNING FOR WILSON AND ATASCOSA COUNTIES HAS EXPIRED... NATIONAL WEATHER SERVICE RADAR INDICATED ONLY ISOLATED PATCHES OF LIGHT RAIN OVER ATASCOSA AND WILSON COUNTY. THE FLOOD THREAT WAS DIMINISHING. SOME MINOR FLOODING OF LOW LYING AREAS AND LOW WATER CROSSINGS MAY CONTINUE...BUT THE THREAT OF SERIOUS FLOODING HAS ENDED AND THE FLASH FLOOD WARNING HAS EXPIRED. 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 |
|---|---|---|---|---|
| Sep 5, 1:02 PM CDT | Flash Flood Warning | EWX | Bexar | 3 hr |
| Sep 5, 2:23 PM CDT | Flash Flood Warning | EWX | Bandera | 3 hr |
Nearby
Flash Flood Warnings in Texas, 2003Every 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.