Alert archive / Texas / Flash Flood Warnings in 2003

Flash Flood Warning 18, NWS Austin/San Antonio, TX

March 25, 2003Kendall County, Texas

NWS Austin/San Antonio, TX issued this flash flood warning at Mar 25, 2003, 5:46 PM CST for Kendall 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
Mar 25, 2003, 5:46 PM CST (23:46 UTC)
Expired
Mar 25, 2003, 9:00 PM CST
In force
3 hr
Issued by
NWS Austin/San Antonio, TX
Area
Counties, with a storm outline in the text

County Kendall County, TX

The radar

The Austin/San Antonio radar (KEWX), 83 km from the middle of the area, began a volume at 23:50 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 12:00Z, 11.8 hours before the alert went out and 203 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 2003-03-25Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1059 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Del Rio, TX at 12:00Z on 2003-03-25The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 113 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
1059 J/kg
Mixed-layer CIN
-217 J/kg
Mixed-layer LCL
590 m above ground
0-6 km bulk shear
50 kt
0-1 km storm-relative helicity
113 m²/s²
0-3 km storm-relative helicity
129 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.5

Open this sounding in Storm Lab

The text

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

000 
WGUS54 KEWX 252349
FFWSAT
TXC259-260300-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
546 PM CST TUE MAR 25 2003

THE NATIONAL WEATHER SERVICE IN AUSTIN SAN ANTONIO HAS ISSUED A

* FLASH FLOOD WARNING FOR THE FOLLOWING COUNTIES...
  KENDALL

* UNTIL 900 PM CST

* AT 544 PM...WEATHER SERVICE DOPPLER RADAR INDICATED VERY HEAVY RAIN
  3 MILES EAST OF COMFORT...MOVING EAST AT 10 MPH.

* THE THUNDERSTORM WITH EXCESSIVE RAINFALL WILL BE...
  5 MILES NORTHWEST OF SISTERDALE AT 555 PM

BLOCK CREEK BETWEEN HIGHWAY 87 AND HIGHWAY 473 WILL BE RISING.  LOW 
WATER CROSSINGS WILL ALSO BE FLOODED.  FM1888 WILL ALSO BE SUBJECT 
TO FLOODING.

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 2985 9895 2976 9881 3012 9862 3011 9891

$$
2 follow-up statements
000 
WGUS74 KEWX 260023
FFSSAT
TXC259-260115-

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
621 PM CST TUE MAR 25 2003

...A FLASH FLOOD WARNING CONTINUES FOR KENDALL COUNTY UNTIL 900 PM
CST...

NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED THUNDERSTORMS 
PRODUCING VERY HEAVY RAINFALL LOCATED FROM INTERSTATE 10 EASTWARD
TO SISTERDALE.  MOVEMENT IS SOUTHEAST AT 10 TO 15 MPH.

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 260212
FFSSAT
TXC171-259-260315-

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
811 PM CST TUE MAR 25 2003

...THE FLASH FLOOD WARNING FOR GILLESPIE AND KENDALL COUNTIES HAS
BEEN CANCELLED...

NATIONAL WEATHER SERVICE RADAR INDICATED THE RAINFALL HAS ENDED
ACROSS THE WARNED AREA...AND THE FLOOD THREAT HAS DIMINISHED. SOME
MINOR FLOODING MAY CONTINUE...BUT THE THREAT OF SERIOUS FLOODING HAS
ENDED...AND THE FLASH FLOOD WARNING HAS BEEN CANCELLED.

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.

IssuedProductOfficeCountiesLasted
Mar 25, 5:01 PM CSTSevere Thunderstorm WarningEWXKendall59 min
Mar 25, 5:08 PM CSTSevere Thunderstorm WarningEWXBandera52 min
Mar 25, 5:13 PM CSTSevere Thunderstorm WarningEWXUvalde62 min
Mar 25, 5:18 PM CSTSevere Thunderstorm WarningEWXGillespie42 min
Mar 25, 5:27 PM CSTSevere Thunderstorm WarningEWXBlanco63 min
Mar 25, 5:32 PM CSTFlash Flood WarningEWXGillespie3 hr
Mar 25, 5:37 PM CSTSevere Thunderstorm WarningEWXBurnet53 min
Mar 25, 5:51 PM CSTSevere Thunderstorm WarningEWXWilliamson54 min
Mar 25, 5:58 PM CSTSevere Thunderstorm WarningEWXKendall62 min

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.