Alert archive / Texas / Flash Flood Warnings in 1998

Flash Flood Warning 3, NWS Austin/San Antonio, TX

January 6, 1998Frio County, Texas

NWS Austin/San Antonio, TX issued this flash flood warning at Jan 6, 1998, 11:51 AM CST for Frio County, Texas. It was in force for 69 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Jan 6, 1998, 11:51 AM CST (17:51 UTC)
Expired
Jan 6, 1998, 1:00 PM CST
In force
69 min
Issued by
NWS Austin/San Antonio, TX
Area
Whole counties

County Frio County, TX

The nearest sounding before it

Del Rio, TX (KDRT), launched 12:00Z, 5.9 hours before the alert went out and 177 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 12:00Z on 1998-01-06Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1357 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 12:00Z on 1998-01-06The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 68 square meters per square second.1939587897Sfc1 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
1357 J/kg
Mixed-layer CIN
-13 J/kg
Mixed-layer LCL
514 m above ground
0-6 km bulk shear
51 kt
0-1 km storm-relative helicity
68 m²/s²
0-3 km storm-relative helicity
156 m²/s²
Significant tornado parameter
0.0
Supercell composite
4.3

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KSAT 061753
FFWSAT
TXC163-061900-
 
BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM AND FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
1151 AM CST TUE JAN 6 1998
 
THE NATIONAL WEATHER SERVICE IN AUSTIN/SAN ANTONIO HAS ISSUED A
SEVERE THUNDERSTORM AND FLASH FLOOD WARNING
EFFECTIVE UNTIL  100 PM CST
FOR PEOPLE IN THE FOLLOWING LOCATION...
 
IN SOUTH CENTRAL TEXAS
 
   ...FRIO COUNTY
 
AT 11:50 AM...RADAR INDICATED A SEVERE THUNDERSTORM NORTH OF
PEARSALL MOVING NORTHEAST AT 10 MPH. THIS STORM IS PRODUCING
RAINFALL RATES GREATER THAN TWO INCHES PER HOUR.
 
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 CROSSINGS.

The office that day

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

IssuedProductOfficeCountiesLasted
Jan 5, 10:40 PM CSTSevere Thunderstorm WarningEWXBurnet50 min
Jan 6, 6:56 AM CSTFlash Flood WarningEWXBandera, Gillespie, Kerr5 hr
Jan 6, 8:11 AM CSTFlash Flood WarningEWXLlano4 hr
Jan 6, 8:45 AM CSTSevere Thunderstorm WarningEWXGillespie60 min
Jan 6, 9:52 AM CSTSevere Thunderstorm WarningEWXWilliamson68 min
Jan 6, 11:02 AM CSTSevere Thunderstorm WarningEWXFrio43 min
Jan 6, 11:51 AM CSTSevere Thunderstorm WarningEWXFrio69 min
Jan 6, 12:17 PM CSTFlash Flood WarningEWXMedina3 hr
Jan 6, 12:41 PM CSTFlash Flood WarningEWXBexar2 hr
Jan 6, 12:55 PM CSTFlash Flood WarningEWXFrio2 hr
Jan 6, 1:31 PM CSTSevere Thunderstorm WarningEWXAtascosa59 min
Jan 6, 2:08 PM CSTFlash Flood WarningEWXAtascosa2 hr
Jan 6, 2:32 PM CSTFlash Flood WarningEWXBexar, Comal118 min
Jan 6, 4:13 PM CSTFlash Flood WarningEWXDeWitt, Gonzales, Lavaca3 hr

Nearby

Flash Flood Warnings in Texas, 1998Every flash flood warning in 1998

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.