Alert archive / Texas / Flash Flood Warnings in 2001
Flash Flood Warning 33, NWS Austin/San Antonio, TX
NWS Austin/San Antonio, TX issued this flash flood warning at Aug 30, 2001, 7:32 AM CDT for Karnes 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
- Aug 30, 2001, 7:32 AM CDT (12:32 UTC)
- Expired
- Aug 30, 2001, 10:30 AM CDT
- In force
- 3 hr
- Issued by
- NWS Austin/San Antonio, TX
- Area
- Whole counties; the outline is the Mesonet’s reconstruction
County Karnes County, TX
The nearest sounding before it
Corpus Christi, TX (KCRP), launched 12:00Z, 0.5 hours before the alert went out and 142 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.
- Mixed-layer CAPE
- 884 J/kg
- Mixed-layer CIN
- -8 J/kg
- Mixed-layer LCL
- 614 m above ground
- 0-6 km bulk shear
- 21 kt
- 0-1 km storm-relative helicity
- 65 m²/s²
- 0-3 km storm-relative helicity
- 230 m²/s²
- Significant tornado parameter
- 0.2
- Supercell composite
- 1.7
The text
As transmitted, in the capitals the NWS used until 2016.
000
WGUS54 KEWX 301232
FFWSAT
FFWSAT
TXC255-301530-
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
732 AM CDT THU AUG 30 2001
THE NATIONAL WEATHER SERVICE HAS ISSUED A
* FLASH FLOOD WARNING FOR...
KARNES
* UNTIL 1030 AM CDT
* AT 730 AM...WEATHER SERVICE DOPPLER RADAR INDICATED VERY HEAVY RAIN
FROM KENEDY TO HELENA AND FROM KARNES CITY TO COY...MOVING NORTH
AT 10 MPH. RAINFALL RATES OF AROUND 2 INCHES PER HOUR CAN BE
EXPECTED AND AROUND 3 INCHES HAS BEEN ESTIMATED TO ALREADY HAVE
FALLEN.
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.
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 TO CROSS A FLOWING STREAM...EVEN A SMALL
ONE...ON FOOT. TO ESCAPE RISING WATER MOVE UP TO HIGHER GROUND.
LAT...LON 2873 9799 2882 9760 2900 9778 2912 9765
2921 9773 2890 9816What 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 Austin/San Antonio, TX wrote its last area forecast discussion before this flash flood warning went out at Aug 30, 7:00 AM CDT, 32 minutes earlier.
Area forecast discussion, Aug 30, 7:00 AM CDT, 32 minutes before
SOUTH CENTRAL TEXAS FORECAST DISCUSSION...UPDATED
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
700 AM CDT WED AUG 29 2001
UPDATE...BOOSTING POPS TODAY MOST GROUPS BASED ON CURRENT TRENDS.
TEMPS YESTERDAY MORE LIKE NOVEMBER THAN AUGUST SHOULD BE MORE
MODERATE TODAY...WARMING SLOWLY NEXT FEW DAYS. WILL REISSUE FLASH
FLOOD WATCH THROUGH THIS EVENING ALONG AND EAST OF I35...ALTHOUGH
MAIN POTENTIAL SHOULD BE EASTERN PORTIONS OF WATCH AREA. ANOTHER
VORT MAX WILL BRING INCREASED ACTIVITY WEST TONIGHT. GRADUAL
DECREASE FRIDAY AND FRIDAY NIGHT THEN CHANCE POPS AREA-WIDE SATURDAY
AS WEAK FRONT EDGES INTO REGION...CONTINUING THROUGH LABOR DAY.
WARMER AND DRY TOWARD MIDDLE OF NEXT WEEK.
PRELIMINARY NUMBERS...
AUS 86/72/89/73 6332
DRT 91/73/94/75 2430
SAT 88/73/90/73 6332
.EWX...FLASH FLOOD WATCH THROUGH THIS EVENING ALONG AND EAST OF
INTERSTATE 35.
3/4/WRThe office that day
Everything else NWS Austin/San Antonio, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 30, 12:00 AM CDT | Flash Flood Warning | EWX | DeWitt, Lavaca | 2 hr |
| Aug 30, 10:00 AM CDT | Flash Flood Warning | EWX | Bexar, Comal, Guadalupe, Wilson | 3 hr |
| Aug 30, 12:56 PM CDT | Flash Flood Warning | EWX | Bexar, Comal, Guadalupe, Wilson | 3 hr |
| Aug 30, 3:45 PM CDT | Flash Flood Warning | EWX | Bexar, Gonzales, Guadalupe, Wilson | 3 hr |
| Aug 30, 6:30 PM CDT | Flash Flood Warning | EWX | Atascosa, Bexar, Gonzales, Guadalupe, Wilson | 4 hr |
Nearby
Flash Flood Warnings in Texas, 2001Every flash flood warning in 2001
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.