Alert archive / Texas / Flash Flood Warnings in 1997

Flash Flood Warning 82, NWS Austin/San Antonio, TX

May 27, 1997Karnes County, Texas

NWS Austin/San Antonio, TX issued this flash flood warning at May 27, 1997, 9:39 PM CDT for Karnes 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 counties it named.

The facts

Issued
May 27, 1997, 9:39 PM CDT (02:39 UTC)
Expired
May 28, 1997, 12:45 AM CDT
In force
3 hr
Issued by
NWS Austin/San Antonio, TX
Area
Whole counties

County Karnes County, TX

The radar

The Austin/San Antonio radar (KEWX), 90 km from the middle of the area, began a volume at 02:43 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, 2.7 hours before the alert went out and 294 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-pSkew-T log-p diagram, Del Rio, TX at 00:00Z on 1997-05-28Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 5979 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Del Rio, TX at 00:00Z on 1997-05-28The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 11 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
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
5979 J/kg
Mixed-layer CIN
-15 J/kg
Mixed-layer LCL
887 m above ground
0-6 km bulk shear
38 kt
0-1 km storm-relative helicity
11 m²/s²
0-3 km storm-relative helicity
91 m²/s²
Significant tornado parameter
1.1
Supercell composite
6.8

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KSAT 280239
FFWSAT
TXC255-280545-
 
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
939 PM CDT TUE MAY 27 1997
 
THE NATIONAL WEATHER SERVICE IN AUSTIN/SAN ANTONIO HAS ISSUED A
FLASH FLOOD WARNING EFFECTIVE UNTIL 1245 AM CDT
FOR PEOPLE IN THE FOLLOWING LOCATION...
 
IN SOUTH CENTRAL TEXAS
 
   ...KARNES COUNTY
 
AT 930 PM CDT NATIONAL WEATHER SERVICE DOPPLER RADAR ESTIMATED THAT 2
TO 3 INCHES OF RAIN HAD FALLEN OVER THE NORTHERN PORTIONS OF THE COUNTY
FROM GILLETT TO HOBSON SINCE 8 PM. ANOTHER INCH OR TWO OF RAINFALL
IS POSSIBLE OVER THE NEXT COUPLE OF HOURS.
 
A FLASH FLOOD WARNING MEANS THAT FLOODING IS OCCURRING OR IMMINENT.
MOST FLASH FLOOD DEATH*S OCCUR IN AUTOMOBILES.  DO NOT ATTEMPT TO
CROSS BRIDGES...OR LOW SPOTS IF WATER COVERS THE ROADWAY.  NEVER TRY
TO CROSS A FLOWING STREAM...EVEN A SMALL ONE...ON FOOT TO ESCAPE
RISING WATER DURING THREATENING RAINS.

The office that day

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

IssuedProductOfficeCountiesLasted
May 27, 7:22 PM CDTSevere Thunderstorm WarningEWXEdwards, Kerr, Val Verde98 min
May 27, 7:27 PM CDTFlash Flood WarningEWXBlanco, Kendall3 hr
May 27, 7:34 PM CDTSevere Thunderstorm WarningEWXGonzales56 min
May 27, 7:38 PM CDTSevere Thunderstorm WarningEWXFrio97 min
May 27, 7:52 PM CDTSevere Thunderstorm WarningEWXMedina68 min
May 27, 8:00 PM CDTFlash Flood WarningEWXBexar60 min
May 27, 8:00 PM CDTSevere Thunderstorm WarningEWXBexar60 min
May 27, 8:01 PM CDTTornado WarningEWXGonzales59 min
May 27, 8:13 PM CDTFlash Flood WarningEWXVal Verde2 hr
May 27, 8:13 PM CDTFlash Flood WarningEWXBandera2 hr
May 27, 8:18 PM CDTTornado WarningEWXFrio57 min
May 27, 8:19 PM CDTSevere Thunderstorm WarningEWXAtascosa56 min
May 27, 8:29 PM CDTFlash Flood WarningEWXGonzales3 hr
May 27, 8:40 PM CDTSevere Thunderstorm WarningEWXDeWitt, Lavaca65 min
May 27, 8:40 PM CDTSevere Thunderstorm WarningEWXKarnes, Wilson65 min
May 27, 8:51 PM CDTSevere Thunderstorm WarningEWXVal Verde69 min
May 27, 8:58 PM CDTFlash Flood WarningEWXFrio2 hr
May 27, 9:05 PM CDTSevere Thunderstorm WarningEWXDimmit85 min
May 27, 9:56 PM CDTFlash Flood WarningEWXFayette3 hr
May 27, 10:03 PM CDTSevere Thunderstorm WarningEWXVal Verde102 min

Nearby

Flash Flood Warnings in Texas, 1997Every 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; radar from the NEXRAD Level II archive.