Alert archive / Texas / Flash Flood Warnings in 2002

Flash Flood Warning 204, NWS Austin/San Antonio, TX

September 7, 2002Burnet County, Gillespie County, Llano County, Texas

NWS Austin/San Antonio, TX issued this flash flood warning at Sep 7, 2002, 8:47 PM CDT for Burnet County, Gillespie County, Llano County, Texas. It was in force for 118 min. 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 7, 2002, 8:47 PM CDT (01:47 UTC)
Expired: Sep 7, 2002, 10:45 PM CDT
In force: 118 min
Issued by: NWS Austin/San Antonio, TX
Area: Counties, with a storm outline in the text

Counties Burnet County, TX, Gillespie County, TX, Llano County, TX

The nearest sounding before it

Del Rio, TX (KDRT), launched 00:00Z, 1.8 hours before the alert went out and 260 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 152 J/kg
Mixed-layer CIN: -29 J/kg
Mixed-layer LCL: 1982 m above ground
0-6 km bulk shear: 16 kt
0-1 km storm-relative helicity: 27 m²/s²
0-3 km storm-relative helicity: 25 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 KEWX 080147
FFWSAT
TXC053-171-299-080345-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
843 PM CDT SAT SEP 7 2002

THE NATIONAL WEATHER SERVICE IN AUSTIN SAN ANTONIO HAS ISSUED A

* FLASH FLOOD WARNING FOR THE FOLLOWING COUNTIES...
  BURNET
  LLANO
  GILLESPIE

* UNTIL 1045 PM CDT

* AT 843 PM...WEATHER SERVICE DOPPLER RADAR INDICATED TWO TO FOUR
  INCH RAINFALL AMOUNTS OCCURRING ACROSS BURNET...LLANO AND
  GILLESPIE COUNTIES. ADDITIONAL RAINS ARE EXPECTED THROUGH THE
  NIGHT.

EXCESSIVE RUNOFF FROM THIS STORM WILL CAUSE FLASH FLOODING OF SMALL 
CREEKS...STREAMS...HIGHWAYS...UNDERPASSES AND COUNTRY ROADS.

DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE 
ROADWAY. VEHICLES CAUGHT IN RISING WATER SHOULD BE ABANDONED QUICKLY.
MOVE TO HIGHER GROUND.


LAT...LON 3047 9925 3019 9927 3019 9864 3054 9864
          3054 9835 3041 9819 3093 9792 3090 9789
          3100 9798 3098 9839 3088 9840 3087 9892
          3048 9893

The office that day

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

Issued	Product	Office	Counties	Lasted
Sep 7, 7:03 PM CDT	Flash Flood Warning	EWX	Uvalde	117 min
Sep 7, 8:00 PM CDT	Flash Flood Warning	EWX	Travis, Williamson	2 hr
Sep 7, 10:00 PM CDT	Flash Flood Warning	EWX	Travis, Williamson	3 hr
Sep 7, 11:03 PM CDT	Flash Flood Warning	EWX	Burnet, Llano	117 min
Sep 8, 1:01 AM CDT	Flash Flood Warning	EWX	Llano	119 min
Sep 8, 4:18 AM CDT	Flash Flood Warning	EWX	Bexar	3 hr
Sep 8, 9:15 AM CDT	Flash Flood Warning	EWX	DeWitt	3 hr
Sep 8, 9:59 AM CDT	Flash Flood Warning	EWX	Blanco, Burnet, Llano, Travis, Williamson	2 hr
Sep 8, 12:06 PM CDT	Flash Flood Warning	EWX	Burnet, Williamson	114 min
Sep 8, 1:42 PM CDT	Flash Flood Warning	EWX	Lavaca	2 hr
Sep 8, 2:00 PM CDT	Flash Flood Warning	EWX	Atascosa	3 hr
Sep 8, 4:53 PM CDT	Flash Flood Warning	EWX	Bexar, Karnes, Wilson	3 hr

Nearby

Flash Flood Warnings in Texas, 2002 Every 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.