Alert archive / Texas / Flash Flood Warnings in 2002
Flash Flood Warning 221, NWS Austin/San Antonio, TX
NWS Austin/San Antonio, TX issued this flash flood warning at Sep 9, 2002, 11:48 AM CDT for 7 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 as issued.
The facts
- Issued
- Sep 9, 2002, 11:48 AM CDT (16:48 UTC)
- Expired
- Sep 9, 2002, 3:00 PM CDT
- In force
- 3 hr
- Issued by
- NWS Austin/San Antonio, TX
- Area
- Counties, with a storm outline in the text
Counties Bandera County, TX, Bexar County, TX, Comal County, TX, Gonzales County, TX, Guadalupe County, TX, Kendall County, TX, Wilson County, TX
The radar
The Austin/San Antonio radar (KEWX), 59 km from the middle of the area, began a volume at 16:47 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.
Did it verify
Not verified. The Iowa Environmental Mesonet's Cow found no qualifying storm report inside this flash flood warning while it was in force. That is not proof nothing happened: reports are thin where few people live.
Cow counts a report within 15 km of the polygon while the warning was in force: a tornado for a tornado warning; hail of 1 inch or more, a gust of 58 mph or more or wind damage for a severe thunderstorm warning; a flash flood report for a flash flood warning.
The nearest sounding before it
Del Rio, TX (KDRT), launched 12:00Z, 4.8 hours before the alert went out and 216 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
- 375 J/kg
- Mixed-layer CIN
- -14 J/kg
- Mixed-layer LCL
- 710 m above ground
- 0-6 km bulk shear
- 8 kt
- 0-1 km storm-relative helicity
- -37 m²/s²
- 0-3 km storm-relative helicity
- -4 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000
WGUS54 KEWX 091648
FFWSAT
TXC019-029-091-177-187-259-493-092000-
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
1145 AM CDT MON SEP 9 2002
THE NATIONAL WEATHER SERVICE IN AUSTIN SAN ANTONIO HAS ISSUED A
* FLASH FLOOD WARNING FOR THE FOLLOWING COUNTIES...
KENDALL
COMAL
BANDERA
GUADALUPE
GONZALES
BEXAR
WILSON
* UNTIL 300 PM CDT
* AT 1140 AM...WEATHER SERVICE RADAR INDICATED A BAND OF VERY HEAVY
RAIN MOVING NORTHWEST AT NEAR 10 MPH INTO SOUTH CENTRAL TEXAS FROM
THE COASTAL PLAINS.
A BAND OF TRAINING SHOWERS AND THUNDERSTORMS FROM CUERO TO NIXON TO
SEGUIN TO SAN ANTONIO AND PIPE CREEK WILL SLOWLY MOVE NORTHWESTWARD
OVER THE NEXT SEVERAL HOURS PRODUCING ADDITIONAL RAINFALL AMOUNTS OF
UP TO 2 TO 3 INCHES.
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 2967 9958 2971 9876 2929 9872 2910 9813
2939 9749 2962 9773 2974 9807 2987 9824
3007 9880 2977 9892 2986 99572 follow-up statements
000 WGUS74 KEWX 091904 FFSSAT TXC019-259-092000- FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX 202 PM CDT MON SEP 9 2002 ...THE FLASH FLOOD WARNING FOR KENDALL AND BANDERA COUNTIES HAS BEEN CANCELLED... NATIONAL WEATHER SERVICE RADAR INDICATED THE RAINFALL WAS ENDING ACROSS KENDALL AND BANDERA COUNTIES...AND THE FLOOD THREAT HAS DIMINISHED. HOWEVER...ADDITIONAL DEVELOPMENT IS POSSIBLE OVER THE NEXT FEW HOURS AND A FLASH FLOOD WARNING MAY HAVE TO BE REISSUED. STAY TUNED TO LOCAL MEDIA OUTLETS FOR THE LATEST WEATHER INFORMATION.
000 WGUS74 KEWX 091908 FFSSAT TXC493-092000- FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX 207 PM CDT MON SEP 9 2002 ...THE FLASH FLOOD WARNING FOR WILSON COUNTY HAS BEEN CANCELLED... NATIONAL WEATHER SERVICE RADAR INDICATED THE RAINFALL HAS ENDED ACROSS WILSON COUNTY...AND THE FLOOD THREAT HAS DIMINISHED. HOWEVER...ADDITIONAL DEVELOPMENT IS POSSIBLE OVER THE EVENING HOURS AND A FLASH FLOOD WARNING MAY HAVE TO BE REISSUED. STAY TUNED TO LOCAL MEDIA OUTLETS FOR THE LATEST WEATHER INFORMATION.
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 Austin/San Antonio, TX wrote its last area forecast discussion before this flash flood warning went out at Sep 9, 10:00 AM CDT, 1 hour 48 minutes earlier.
Area forecast discussion, Sep 9, 10:00 AM CDT, 1 hour 48 minutes before
SOUTH CENTRAL TEXAS FORECAST DISCUSSION...UPDATED NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX 1000 AM CDT MON SEP 9 2002 REMAINS OF FAY IN NE DIMMIT COUNTY WITH SW DRIFT EXPECTED TAKING CENTER ACROSS RIO GRANDE BY THIS TIME TUESDAY. STRONG FEEDER BAND CURRENTLY ACROSS SOUTHERN DEWITT COUNTY TO SOUTHERN BEXAR TO MEDINA COUNTY WITH RAINFALL RATES TO 3 INCHES PER HOUR. AVN INDICATES SOME SLACKENING OF ACTIVITY THIS AFTERNOON AND EVENING. WILL CONTINUE WITH FLASH FLOOD WATCH AS IS THROUGH THE DAY AND RECONFIGURE WITH AFTERNOON ZONE PACKAGE. WILL BOOST POPS FOR THIS AFTERNOON EXTREME WEST. 3/13/PM PREVIOUS DISCUSSION... CENTER OF WHAT WAS TROPICAL STORM FAY NOW IN LA SALLE COUNTY AND WILL CONTINUE DRIFTING SLOWLY SOUTHWEST. ANOTHER DAY OF DEVELOPING CONVECTION WITH DAYTIME HEATING AROUND THE CENTER WILL ENCOMPASS MUCH OF SOUTH CENTRAL TEXAS EXCEPT EXTREME WESTERN PORTIONS. WILL CONTINUE A FLASH FLOOD WATCH THROUGH 6 PM TODAY FOR ALL OF THE AREA EXCEPT VAL VERDE AND EDWARDS COUNTIES. CENTER SHOULD MOVE INTO MEXICO BY TUESDAY WITH PRECIPITATION TAPERING OFF OVER ALL BUT RIO GRANDE VALLEY BY TUESDAY. BY MID WEEK A SHALLOW FRONT AND ASSOCIATED WEAK UPPER DISTURBANCE MOVE ACROSS (WEDNESDAY) WITH MORE STABLE LOW LEVEL CONDITIONS. REST OF WEEK SHOWS A GRADUAL WESTERLY FLOW ALOFT WITH INCREASINGLY ZONAL FLOW ALOFT...THIS WILL PUT A CAP ON ACTIVITY FROM FORMING FRIDAY AND SATURDAY WITH A SLIGHT CHANCE SUNDAY AS A WEAK UPPER DISTURBANCE MOVES SOUTH. .EWX...FLASH FLOOD WATCH THROUGH 6 PM MONDAY FOR ALL EXCEPT EDWARDS AND VAL VERDE COUNTIES. 02/06/DC PRELIMS... AUS TB 084/073 092/069 088 732 DRT TT 091/073 087/072 086 474 SAT TB 081/072 090/070 087 952
In the hours before
Local storm report, Sep 9, 6:25 AM CDT, 5 hours 23 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO, TX
625 AM CDT MON SEP 9 2002
TIME(CDT) .....CITY LOCATION.....STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
0615 AM DILLEY TX FLASH FLOODS
09/09/02 FRIO STATE HWY 85 EAST AND WEST
CLOSED
REPORTED BY LAW
ENFORCEMENT
0615 AM DILLEY TX FLASH FLOODS
09/09/02 FRIO FM 117 EAST AND WEST
CLOSED
REPORTED BY LAW
ENFORCEMENT
0615 AM DIVOT TX FLASH FLOODS
09/09/02 FRIO FM 1581 CLOSED
REPORTED BY
LAW ENFORCEMENT
0615 AM PEARSALL TX FLASH FLOODS
09/09/02 FRIO FM 140 EAST AND WEST
CLOSED
REPORTED BY LAW
ENFORCEMENT
DCThe office that day
Everything else NWS Austin/San Antonio, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 8, 7:25 PM CDT | Flash Flood Warning | EWX | Medina | 3 hr |
| Sep 8, 8:57 PM CDT | Flash Flood Warning | EWX | Atascosa, Frio, Medina | 4 hr |
| Sep 9, 12:25 AM CDT | Flash Flood Warning | EWX | Atascosa, Frio, Medina | 6 hr |
| Sep 9, 5:45 AM CDT | Flash Flood Warning | EWX | Frio | 3 hr |
| Sep 9, 6:01 AM CDT | Flash Flood Warning | EWX | Atascosa, Bexar | 3 hr |
| Sep 9, 8:48 AM CDT | Flash Flood Warning | EWX | Atascosa, Bexar, Frio, Karnes, Medina, Wilson | 3 hr |
| Sep 9, 11:16 AM CDT | Flash Flood Warning | EWX | DeWitt | 4 hr |
Nearby
Flash Flood Warnings in Texas, 2002Every flash flood warning in 2002
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.