Alert archive / Texas / Flash Flood Warnings in 2001

Flash Flood Warning 15, NWS Austin/San Antonio, TX

May 4, 2001Bandera County, Uvalde County, Texas

NWS Austin/San Antonio, TX issued this flash flood warning at May 4, 2001, 8:06 PM CDT for Bandera County, Uvalde County, Texas. It was in force for 114 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline the Iowa Environmental Mesonet reconstructed for it; the warning itself named whole counties.

The facts

Issued: May 4, 2001, 8:06 PM CDT (01:06 UTC)
Expired: May 4, 2001, 10:00 PM CDT
In force: 114 min
Issued by: NWS Austin/San Antonio, TX
Area: Whole counties; the outline is the Mesonet’s reconstruction

Counties Bandera County, TX, Uvalde County, TX

The radar

The Laughlin AFB radar (KDFX), 58 km from the middle of the area, began a volume at 01:08 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, 1.1 hours before the alert went out and 110 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: 73 J/kg
Mixed-layer CIN: -35 J/kg
Mixed-layer LCL: 906 m above ground
0-6 km bulk shear: 57 kt
0-1 km storm-relative helicity: 164 m²/s²
0-3 km storm-relative helicity: 190 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.2

Open this sounding in Storm Lab

The text

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

000 
WGUS54 KEWX 050105
FFWSAT
TXC019-463-050300-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
806 PM CDT FRI MAY 4 2001

THE NATIONAL WEATHER SERVICE HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  BANDERA
  UVALDE

* UNTIL 1000 PM CDT

* AT 806 PM...WEATHER SERVICE DOPPLER RADAR INDICATED A LINE OF      
  THUNDERSTORMS WITH VERY HEAVY RAINFALL MOVING EAST AT 35 MPH       
  ACROSS BANDERA AND UVALDE COUNTIES. THIS LINE OF STORMS IS         
  SUFFICIENTLY WIDE ENOUGH TO PRODUCE FLASH FLOODING RAINS OF 2 TO 
  4 INCHES ACROSS PARTS OF UVALDE AND BANDERA COUNTIES.

SMALL STREAMS AND CREEKS WILL FLOOD THE NEXT FEW HOURS...FLOODING 
SECONVDARY ROADS...LOW BRIDGES AND CROSSINGS. MOTORISTS SHOULD USE 
GREAT CARE APPROACHING FLOOD PRONE AREAS AND IN NO CIRCUMSTANCES 
ENTER FLOODED CROSSINGS. 


LAT...LON 2928 9994 2916 9981 2947 9949 2989 9936

The office that day

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

Issued	Product	Office	Counties	Lasted
May 4, 7:12 PM CDT	Severe Thunderstorm Warning	EWX	Maverick	63 min
May 4, 7:35 PM CDT	Tornado Warning	EWX	Maverick	40 min
May 4, 7:54 PM CDT	Severe Thunderstorm Warning	EWX	Bandera, Real	66 min
May 4, 8:15 PM CDT	Severe Thunderstorm Warning	EWX	Dimmit, Zavala	60 min
May 4, 10:14 PM CDT	Tornado Warning	EWX	Frio	46 min
May 5, 2:20 AM CDT	Flash Flood Warning	EWX	Bandera, Real, Uvalde	3 hr
May 5, 3:22 PM CDT	Flash Flood Warning	EWX	Karnes	113 min
May 5, 3:45 PM CDT	Flash Flood Warning	EWX	Lavaca	2 hr
May 5, 4:01 PM CDT	Flash Flood Warning	EWX	DeWitt	119 min
May 5, 5:02 PM CDT	Flash Flood Warning	EWX	Travis, Williamson	88 min
May 5, 5:41 PM CDT	Flash Flood Warning	EWX	Lavaca	2 hr

Nearby

Flash Flood Warnings in Texas, 2001 Every flash flood warning in 2001

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.