Alert archive / Texas / Flash Flood Warnings in 2000

Flash Flood Warning 71, NWS Austin/San Antonio, TX

November 3, 2000Llano County, Texas

NWS Austin/San Antonio, TX issued this flash flood warning at Nov 3, 2000, 5:58 PM CST for Llano County, Texas. It was in force for 4 hr. 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
Nov 3, 2000, 5:58 PM CST (23:58 UTC)
Expired
Nov 3, 2000, 10:00 PM CST
In force
4 hr
Issued by
NWS Austin/San Antonio, TX
Area
Whole counties; the outline is the Mesonet’s reconstruction

County Llano County, TX

The radar

The Austin/San Antonio radar (KEWX), 129 km from the middle of the area, began a volume at 00:00 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, 12.0 hours before the alert went out and 250 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 2000-11-03Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 262 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 2000-11-03The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 71 square meters per square second.19395878Sfc1 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
262 J/kg
Mixed-layer CIN
-63 J/kg
Mixed-layer LCL
663 m above ground
0-6 km bulk shear
43 kt
0-1 km storm-relative helicity
71 m²/s²
0-3 km storm-relative helicity
157 m²/s²
Significant tornado parameter
0.1
Supercell composite
1.0

Open this sounding in Storm Lab

The text

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

000 
WGUS54 KEWX 040002
FFWEWX
TXC299-040400-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
558 PM CST FRI NOV 3 2000

THE NATIONAL WEATHER SERVICE IN AUSTIN SAN ANTONIO HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  LLANO COUNTY

* UNTIL 1000 PM CST

* AT 558 PM CST...WEATHER SERVICE DOPPLER RADAR INDICATED VERY HEAVY
HEAVY RAINS CONTINUING TO MOVE NORTHWARD ACROSS LLANO COUNTY.
REPEATED STORMS SOUTH OF LLANO COUNTY WILL CONTINUE TO SPREAD INTO
THE COUNTY.

MANY ROADS AND LOWLYING AREAS ARE CLOSED THROUGHOUT THE
COUNTIES.  STREAMS ARE OVER BANKS AND SOME RIVERS ARE IN FLOOD.
PEOPLE NEAR OR IN LOW LYING AREAS SHOULD MOVE TO HIGHER GROUND.
MOTORISTS SHOULD AVOID THE AREA IF POSSIBLE...OTHERWISE AVOID
FLOODED AND BARACADED LOW AREAS.  THIS EVENT IS VERY SERIOUS AND
PEOPLE SHOULD BE PREPARED TO PROTECT LIFE AND PROPERTY.

LAT...LON 3055 9893 3054 9843 3091 9847 3090 9892

The office that day

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

IssuedProductOfficeCountiesLasted
Nov 2, 6:03 PM CSTTornado WarningEWXBlanco, Comal, Hays57 min
Nov 2, 7:12 PM CSTFlash Flood WarningEWXBlanco, Comal, Hays, Kendall4 hr
Nov 2, 10:45 PM CSTFlash Flood WarningEWXBastrop, Bexar, Blanco, Caldwell, Comal, Guadalupe and 4 more6 hr
Nov 3, 12:07 AM CSTFlash Flood WarningEWXBandera, Medina, Uvalde6 hr
Nov 3, 12:50 AM CSTFlash Flood WarningEWXKerr4 hr
Nov 3, 1:06 AM CSTFlash Flood WarningEWXEdwards, Real4 hr
Nov 3, 1:14 AM CSTFlash Flood WarningEWXGillespie4 hr
Nov 3, 4:20 AM CSTFlash Flood WarningEWXVal Verde3 hr
Nov 3, 7:42 AM CSTFlash Flood WarningEWXEdwards, Val Verde3 hr
Nov 3, 9:48 AM CSTFlash Flood WarningEWXTravis3 hr
Nov 3, 10:56 AM CSTFlash Flood WarningEWXEdwards, Real, Uvalde3 hr
Nov 3, 11:43 AM CSTFlash Flood WarningEWXBastrop3 hr
Nov 3, 12:02 PM CSTFlash Flood WarningEWXKerr3 hr
Nov 3, 2:04 PM CSTFlash Flood WarningEWXEdwards, Real, Val Verde4 hr
Nov 3, 2:55 PM CSTFlash Flood WarningEWXGillespie, Kerr, Llano3 hr
Nov 3, 3:22 PM CSTFlash Flood WarningEWXTravis3 hr
Nov 3, 3:39 PM CSTFlash Flood WarningEWXWilliamson2 hr
Nov 3, 4:57 PM CSTFlash Flood WarningEWXAtascosa, Bastrop, Caldwell, Fayette, Gonzales, Guadalupe and 3 more4 hr

Nearby

Flash Flood Warnings in Texas, 2000Every flash flood warning in 2000

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.