Alert archive / Texas / Flash Flood Warnings in 2000

Flash Flood Warning 41, NWS San Angelo, TX

October 23, 2000Sterling County, Texas

NWS San Angelo, TX issued this flash flood warning at Oct 23, 2000, 10:53 PM CDT for Sterling 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 the Iowa Environmental Mesonet reconstructed for it; the warning itself named whole counties.

The facts

Issued
Oct 23, 2000, 10:53 PM CDT (03:53 UTC)
Expired
Oct 24, 2000, 2:00 AM CDT
In force
3 hr
Issued by
NWS San Angelo, TX
Area
Whole counties; the outline is the Mesonet’s reconstruction

County Sterling County, TX

The radar

The San Angelo radar (KSJT), 74 km from the middle of the area, began a volume at 03:52 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

Midland Regional, TX (KMAF), launched 00:00Z, 3.9 hours before the alert went out and 106 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, Midland Regional, TX at 00:00Z on 2000-10-24Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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, Midland Regional, TX at 00:00Z on 2000-10-24The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 81 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
1524 m above ground
0-6 km bulk shear
44 kt
0-1 km storm-relative helicity
81 m²/s²
0-3 km storm-relative helicity
175 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

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

000 
WGUS54 KSJT 240356
FFWSJT
TXC431-240700-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE SAN ANGELO TX
1053 PM CDT MON OCT 23 2000

THE NATIONAL WEATHER SERVICE IN SAN ANGELO HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  STERLING COUNTY IN WEST CENTRAL TEXAS

* UNTIL 200 AM CDT

* AT 1048 PM CDT...WEATHER SERVICE DOPPLER RADAR INDICATED VERY HEAVY
  RAIN 9 MILES SOUTHWEST OF STERLING CITY...MOVING NORTHEAST AT 20
  MPH.

* RAINFALL TOTALING UP TO ONE INCH HAS FALLEN IN THE WARNED          
  AREA...WITH ADDITIONAL RAINFALL UP TO 2 INCHES EXPECTED THROUGH    
  200 AM CDT. THE HEAVY RAIN WILL CAUSE FLOODING OF STREAMS AND LOW  
  WATER CROSSINGS...ESPECIALLY ALONG HIGHWAY 163.   

A FLASH FLOOD WARNING MEANS THAT FLOODING IS OCCURRING OR IS
IMMINENT. MOST FLASH FLOOD DEATHS OCCUR IN AUTOMOBILES. DO NOT
ATTEMPT TO CROSS BRIDGES...DIPS...OR OTHER LOW SPOTS IF WATER COVERS
THE ROADWAY. NEVER TRY TOo CROSS A FLOWING STREAM...EVEN A SMALL
ONE...ON FOOT. TO ESCAPE RISING WATER MOVE UP TO HIGHER GROUND.

LAT...LON 3158 10126 3159 10089 3211 10082 3209 10126

17

What forecasters said that day

The local office's own words before this flash flood warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS San Angelo, TX wrote its last area forecast discussion before this flash flood warning went out at Oct 23, 9:13 PM CDT, 1 hour 40 minutes earlier.

Area forecast discussion, Oct 23, 9:13 PM CDT, 1 hour 40 minutes before
WEST CENTRAL TEXAS FORECAST DISCUSSION...UPDATED
NATIONAL WEATHER SERVICE SAN ANGELO TX
913 PM CDT MON OCT 23 2000

THE REGIONAL RADAR LOOP SHOWS AN MCS EXTENDING FROM MIDLAND TO EAST OF
SANDERSON AND WAS MOVING EAST. DUE TO THE SUBTROPICAL AIRMASS IN PLACE...
THIS THUNDERSTORM COMPLEX WILL BE A VERY EFFICIENT RAINFALL PRODUCER.
WITH THE ALREADY SATURATED GROUND... ANY ADDITIONAL RAINFALL FROM THIS
SYSTEM COULD CAUSE FLASH FLOODING... AS WELL AS AGGRAVATE THE EXISTING
FLOODING IN OUR SRN ZONES. AS A RESULT... UPDATED THE FFA TO INCLUDE THE
CONCHO VALLEY.

.SJT...FLASH FLOOD WATCH TONIGHT FOR NORTHERN EDWARDS PLATEAU...
       NORTHWEST HILL COUNTRY AND CONCHO VALLEY.

TEW

The office that day

Everything else NWS San Angelo, TX issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Oct 23, 7:14 PM CDTFlash Flood WarningSJTSan Saba3 hr
Oct 23, 9:18 PM CDTSevere Thunderstorm WarningSJTCrockett42 min
Oct 23, 10:37 PM CDTFlash Flood WarningSJTIrion3 hr
Oct 23, 11:57 PM CDTFlash Flood WarningSJTCoke3 hr
Oct 24, 12:43 AM CDTFlash Flood WarningSJTTom Green3 hr
Oct 24, 12:54 AM CDTTornado WarningSJTCrockett66 min
Oct 24, 2:34 AM CDTFlash Flood WarningSJTTaylor3 hr
Oct 24, 3:41 AM CDTFlash Flood WarningSJTCrockett3 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.