Alert archive / Texas / Flash Flood Warnings in 2000

Flash Flood Warning 39, NWS Houston/Galveston, TX

November 6, 20004 counties in Texas

NWS Houston/Galveston, TX issued this flash flood warning at Nov 6, 2000, 12:48 AM CST for 4 counties in 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 the Iowa Environmental Mesonet reconstructed for it; the warning itself named whole counties.

The facts

Issued
Nov 6, 2000, 12:48 AM CST (06:48 UTC)
Expired
Nov 6, 2000, 3:45 AM CST
In force
3 hr
Issued by
NWS Houston/Galveston, TX
Area
Whole counties; the outline is the Mesonet’s reconstruction

Counties Austin County, TX, Burleson County, TX, Colorado County, TX, Washington County, TX

The nearest sounding before it

Corpus Christi, TX (KCRP), launched 00:00Z, 6.8 hours before the alert went out and 276 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, Corpus Christi, TX at 00:00Z on 2000-11-06Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 18 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, Corpus Christi, TX at 00:00Z on 2000-11-06The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 79 square meters per square second.1939587897117Sfc1 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
18 J/kg
Mixed-layer CIN
-301 J/kg
Mixed-layer LCL
1211 m above ground
0-6 km bulk shear
44 kt
0-1 km storm-relative helicity
79 m²/s²
0-3 km storm-relative helicity
121 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 
WGUS54 KHGX 060652
FFWHGX
TXC015-051-089-477-060945-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX
1248 AM CST MON NOV 6 2000

THE NATIONAL WEATHER SERVICE IN HOUSTON/GALVESTON TX HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  BURLESON COUNTY IN SOUTHEAST TEXAS
  COLORADO COUNTY IN SOUTHEAST TEXAS
  WASHINGTON COUNTY IN SOUTHEAST TEXAS
  AUSTIN COUNTY IN SOUTHEAST TEXAS

* UNTIL 345 AM CST

* AT 1246 AM CST...DOPPLER RADAR INDICATED VERY HEAVY RAINFALL OF 1
  TO 2 INCHES PER HOUR SPREADING NORTHEAST ACROSS THE AREA.

* FLOODING IS POSSIBLE GENERALLY ALONG AND NORTH OF A LINE FROM...
  SHERIDAN TO EAGLE LAKE TO SEALY...

ANOTHER SWATH OF HEAVY RAINFALL WILL SPREAD OVER THE REGION
FURTHER INCREASING THE THREAT FOR FLOODING...AVOID LOW LYING AREAS
NEAR SMALL STREAMS AND RIVERS.

DO NOT CROSS ANY LOCATION WHERE WATER COVERS THE ROAD!

PLEASE REPORT FLOODING TO THE COUNTY SHERIFF...LOCAL POLICE...OR
DEPARTMENT OF PUBLIC SAFETY. THEY WILL RELAY YOUR REPORT TO THE
NATIONAL WEATHER SERVICE.

LAT...LON 3052 9639 2959 9623 2940 9662 3045 9684

The office that day

Everything else NWS Houston/Galveston, TX issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Nov 5, 9:45 PM CSTSevere Thunderstorm WarningHGXAustin, Colorado, Washington, Wharton60 min
Nov 5, 9:45 PM CSTSevere Thunderstorm WarningHGXBrazos, Burleson60 min
Nov 5, 10:26 PM CSTSevere Thunderstorm WarningHGXFort Bend, Waller, Wharton64 min
Nov 5, 10:26 PM CSTSevere Thunderstorm WarningHGXGrimes, Madison64 min
Nov 5, 10:44 PM CSTSevere Thunderstorm WarningHGXHarris, Montgomery46 min
Nov 5, 10:44 PM CSTSevere Thunderstorm WarningHGXWalker46 min
Nov 5, 10:55 PM CSTTornado WarningHGXGrimes, Montgomery, Walker50 min
Nov 5, 11:04 PM CSTFlash Flood WarningHGXBrazos, Grimes, Madison, Walker3 hr
Nov 5, 11:22 PM CSTSevere Thunderstorm WarningHGXHouston, Trinity53 min
Nov 5, 11:22 PM CSTSevere Thunderstorm WarningHGXPolk, San Jacinto53 min
Nov 5, 11:30 PM CSTTornado WarningHGXMontgomery, San Jacinto60 min
Nov 5, 11:30 PM CSTTornado WarningHGXWalker45 min
Nov 5, 11:40 PM CSTSevere Thunderstorm WarningHGXBrazoria, Chambers, Galveston, Harris65 min
Nov 5, 11:40 PM CSTSevere Thunderstorm WarningHGXLiberty65 min
Nov 5, 11:40 PM CSTSevere Thunderstorm WarningHGXFort Bend65 min
Nov 6, 12:09 AM CSTSevere Thunderstorm WarningHGXJackson, Matagorda, Wharton51 min
Nov 6, 12:18 AM CSTFlash Flood WarningHGXHouston, Montgomery, Polk, San Jacinto, Trinity102 min
Nov 6, 12:30 AM CSTSevere Thunderstorm WarningHGXPolk45 min
Nov 6, 1:42 AM CSTFlash Flood WarningHGXMadison, San Jacinto, Walker2 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.