Alert archive / Texas / Flash Flood Warnings in 1997

Flash Flood Warning 50, NWS Austin/San Antonio, TX

April 26, 1997Dimmit County, Texas

NWS Austin/San Antonio, TX issued this flash flood warning at Apr 26, 1997, 1:11 AM CDT for Dimmit County, Texas. It was in force for 2 hr. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Apr 26, 1997, 1:11 AM CDT (06:11 UTC)
Expired: Apr 26, 1997, 3:15 AM CDT
In force: 2 hr
Issued by: NWS Austin/San Antonio, TX
Area: Whole counties

County Dimmit County, TX

The nearest sounding before it

Del Rio, TX (KDRT), launched 00:00Z, 6.2 hours before the alert went out and 149 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: 22 J/kg
Mixed-layer CIN: -210 J/kg
Mixed-layer LCL: 1669 m above ground
0-6 km bulk shear: 65 kt
0-1 km storm-relative helicity: 13 m²/s²
0-3 km storm-relative helicity: 379 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.3

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KSAT 260613
FFWSAT
TXC127-260815-
 
BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM AND FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
111 AM CDT SAT APR 26 1997
 
THE NATIONAL WEATHER SERVICE IN AUSTIN/SAN ANTONIO HAS ISSUED A
SEVERE THUNDERSTORM AND FLASH FLOOD WARNING
EFFECTIVE UNTIL  315 AM CDT
FOR PEOPLE IN THE FOLLOWING LOCATION...
 
IN SOUTH CENTRAL TEXAS
 
   ...DIMMIT COUNTY
 
AT 110 AM CDT STRONG THUNDERSTORMS WERE CONVERGING OVER DIMMIT COUNTY.
STORMS WERE MOVING NORTH FROM MAVERICK COUNTY AND ANOTHER STORM WITH
POSSIBLE HAIL WAS MOVING INTO THE SOUTHWEST CORNER FROM MEXICO.
 
HAIL UP TO 2 INCHES IN DIAMETER AND 2 TO 3 INCHES OF RAIN ARE POSSIBLE
FROM THESE STORMS.
 
PEOPLE IN THE PATH OF THIS STORM SHOULD BE ALERT TO THE POSSIBILITY
OF LARGE HAIL AND DAMAGING WINDS.  FREQUENT LIGHTNING AND LOCALLY
HEAVY RAIN CAN ALSO OCCUR WITH SEVERE THUNDERSTORMS...FLOODING SMALL
STREAMS...LOW AREAS...AND LOW WATER CROSSIZNGS.

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 25, 9:56 PM CDT	Flash Flood Warning	EWX	Val Verde	3 hr
Apr 25, 11:04 PM CDT	Severe Thunderstorm Warning	EWX	Edwards, Real	56 min
Apr 25, 11:11 PM CDT	Severe Thunderstorm Warning	EWX	Maverick	2 hr
Apr 25, 11:50 PM CDT	Flash Flood Warning	EWX	Uvalde	115 min
Apr 25, 11:50 PM CDT	Severe Thunderstorm Warning	EWX	Uvalde	115 min
Apr 25, 11:54 PM CDT	Severe Thunderstorm Warning	EWX	Kerr	66 min
Apr 26, 12:53 AM CDT	Flash Flood Warning	EWX	Bandera	2 hr
Apr 26, 1:11 AM CDT	Severe Thunderstorm Warning	EWX	Dimmit	2 hr
Apr 26, 1:25 AM CDT	Flash Flood Warning	EWX	Gillespie, Kerr	65 min
Apr 26, 1:25 AM CDT	Severe Thunderstorm Warning	EWX	Gillespie, Kerr	65 min
Apr 26, 2:55 AM CDT	Severe Thunderstorm Warning	EWX	Atascosa	65 min
Apr 26, 3:12 AM CDT	Flash Flood Warning	EWX	Bandera	3 hr
Apr 26, 5:03 AM CDT	Flash Flood Warning	EWX	Hays, Travis	3 hr
Apr 26, 5:43 AM CDT	Flash Flood Warning	EWX	Williamson	3 hr

Nearby

Flash Flood Warnings in Texas, 1997 Every flash flood warning in 1997

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.