Alert archive / Texas / Flash Flood Warnings in 1999

Flash Flood Warning 46, NWS Austin/San Antonio, TX

June 13, 1999Williamson County, Texas

NWS Austin/San Antonio, TX issued this flash flood warning at Jun 13, 1999, 3:26 PM CDT for Williamson 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 counties it named.

The facts

Issued
Jun 13, 1999, 3:26 PM CDT (20:26 UTC)
Expired
Jun 13, 1999, 6:30 PM CDT
In force
3 hr
Issued by
NWS Austin/San Antonio, TX
Area
Whole counties

County Williamson County, TX

The nearest sounding before it

Fort Worth, TX (KFWD), launched 12:00Z, 8.4 hours before the alert went out and 245 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, Fort Worth, TX at 12:00Z on 1999-06-13Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 276 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, Fort Worth, TX at 12:00Z on 1999-06-13The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 9 square meters per square second.1939Sfc1 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
276 J/kg
Mixed-layer CIN
-56 J/kg
Mixed-layer LCL
818 m above ground
0-6 km bulk shear
7 kt
0-1 km storm-relative helicity
9 m²/s²
0-3 km storm-relative helicity
6 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 
TTAA00 KSAT 132027
FFWSAT
TXC491-132330-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
326 PM CDT SUN JUN 13 1999

THE NATIONAL WEATHER SERVICE IN AUSTIN/SAN ANTONIO HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  WILLIAMSON COUNTY IN TEXAS

* UNTIL 630 PM CDT

* AT 325 PM CDT... NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
  A THUNDERSTORM WITH VERY HEAVY RAIN GEORGETOWN...ROUND ROCK AND
  TAYLOR... MOVING LITTLE MOVEMENT.

* RAINFALL RATES OF 2 TO 3 INCHES PER HOUR ARE BE ESTIMATED BY RADAR

DON'T DRIVE INTO AREAS WHERE WATER COVERS THE ROAD!

DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE WATER COVERS THE
ROADWAY. THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO
CROSS SAFELY AND THE ROAD BENEATH MAY NOT BE INTACT. VEHICLES
CAUGHT IN RISING WATER SHOULD BE ABANDONED QUICKLY...IF YOU CAN DO
SO SAFELY. IT ONLY TAKES A FOOT OR TWO OF FLOWING WATER TO WASH
MOST CARS AWAY. REMEMBER...MOST DEATHS IN FLASH FLOODING OCCUR IN
AUTOMOBILES.

PASHOS

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.

In the hours before

Local storm report, Jun 13, 11:49 AM CDT, 3 hours 37 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
1149 AM CDT SUN JUN 13 1999

TIME(CDT)  .....CITY LOCATION..... STATE  ...EVENT/REMARKS...
           ....COUNTY LOCATION....

0840 PM                              TX   WIND DAMAGE
06/12/99   BEXAR                          TREES BLOWN DOWN, WINDOWS
                                          BROKEN AND POWER OUT IN
                                          SHERTZ REPORTED BY POLICE
                                          DEPARTMENT.

0845 PM                              TX   WIND DAMAGE
06/12/99   GUADALUPE                      ROOFS BLOWN OFF AND FENCES
                                          BLOWN DOWN IN CIBOLO
                                          REPORTED BY SHERIFFS
                                          DEPARTMENT.

0848 PM                              TX   55 MPH TSTM GUST

06/12/99   GUADALUPE                      WIND GUSTS UP TO 55 MPH AT
                                          THE NEW BRAUNFELS AIRPORT.

0950 PM                              TX   WIND DAMAGE
06/12/99   GUADALUPE                      ROOFS BLOWN OFF IN
                                          GERONIMO REPORTED BY
                                          SHERIFFS DEPARTMENT.
Local storm report, Jun 13, 11:49 AM CDT, 3 hours 37 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
1149 AM CDT SUN JUN 13 1999

TIME(CDT)  .....CITY LOCATION..... STATE  ...EVENT/REMARKS...
           ....COUNTY LOCATION....

0840 PM                              TX   WIND DAMAGE
06/12/99   BEXAR                          TREES BLOWN DOWN, WINDOWS
                                          BROKEN AND POWER OUT IN
                                          SHERTZ REPORTED BY POLICE
                                          DEPARTMENT.

0845 PM                              TX   WIND DAMAGE
06/12/99   GUADALUPE                      ROOFS BLOWN OFF AND FENCES
                                          BLOWN DOWN IN CIBOLO
                                          REPORTED BY SHERIFFS
                                          DEPARTMENT.

0848 PM                              TX   55 MPH TSTM GUST

06/12/99   GUADALUPE                      WIND GUSTS UP TO 55 MPH AT
                                          THE NEW BRAUNFELS AIRPORT.

0950 PM                              TX   WIND DAMAGE
06/12/99   GUADALUPE                      ROOFS BLOWN OFF IN
                                          GERONIMO REPORTED BY
                                          SHERIFFS DEPARTMENT.

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 12, 7:18 PM CDTSevere Thunderstorm WarningEWXBastrop, Caldwell57 min
Jun 12, 8:30 PM CDTFlash Flood WarningEWXVal Verde3 hr
Jun 12, 8:35 PM CDTSevere Thunderstorm WarningEWXBexar, Comal, Guadalupe, Hays55 min
Jun 12, 9:18 PM CDTSevere Thunderstorm WarningEWXBexar, Comal, Guadalupe57 min
Jun 12, 9:18 PM CDTSevere Thunderstorm WarningEWXKendall57 min
Jun 12, 9:20 PM CDTFlash Flood WarningEWXBexar, Comal, Guadalupe100 min
Jun 12, 10:10 PM CDTSevere Thunderstorm WarningEWXBexar60 min
Jun 12, 10:20 PM CDTSevere Thunderstorm WarningEWXBandera65 min
Jun 12, 11:01 PM CDTFlash Flood WarningEWXBandera, Kerr2 hr
Jun 12, 11:01 PM CDTSevere Thunderstorm WarningEWXBandera, Kerr2 hr
Jun 12, 11:35 PM CDTSevere Thunderstorm WarningEWXKinney, Maverick, Uvalde, Zavala70 min
Jun 12, 11:35 PM CDTSevere Thunderstorm WarningEWXDimmit70 min
Jun 12, 11:51 PM CDTSevere Thunderstorm WarningEWXReal64 min
Jun 13, 12:39 AM CDTFlash Flood WarningEWXUvalde, Zavala116 min
Jun 13, 1:00 AM CDTSevere Thunderstorm WarningEWXFrio, Medina75 min

Nearby

Flash Flood Warnings in Texas, 1999Every flash flood warning in 1999

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.