Alert archive / Texas / Flash Flood Warnings in 2005

Flash Flood Warning 98, NWS Austin/San Antonio, TX

September 10, 2005Frio County, Medina County, Texas

NWS Austin/San Antonio, TX issued this flash flood warning at Sep 10, 2005, 9:48 PM CDT for Frio County, Medina 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 as issued.

The facts

Issued
Sep 10, 2005, 9:48 PM CDT (02:48 UTC)
Expired
Sep 11, 2005, 12:45 AM CDT
In force
3 hr
Issued by
NWS Austin/San Antonio, TX
Area
Counties, with a storm outline in the text

Counties Frio County, TX, Medina County, TX

The radar

The Austin/San Antonio radar (KEWX), 119 km from the middle of the area, began a volume at 02:51 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

Del Rio, TX (KDRT), launched 00:00Z, 2.8 hours before the alert went out and 178 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, Del Rio, TX at 00:00Z on 2005-09-11Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1412 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Del Rio, TX at 00:00Z on 2005-09-11The 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
1412 J/kg
Mixed-layer CIN
-21 J/kg
Mixed-layer LCL
1756 m above ground
0-6 km bulk shear
19 kt
0-1 km storm-relative helicity
9 m²/s²
0-3 km storm-relative helicity
-27 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 110249
FFWEWX
TXC163-325-110545-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
948 PM CDT SAT SEP 10 2005

THE NATIONAL WEATHER SERVICE IN AUSTIN SAN ANTONIO HAS ISSUED A

* FLASH FLOOD WARNING FOR THE FOLLOWING COUNTIES...
  MEDINA
  FRIO

* UNTIL 1245 AM CDT

* AT 942 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
  VERY HEAVY RAIN FROM NEARLY STATIONARY THUNDERSTORMS OVER SOUTHERN
  MEDINA AND NORTHERN FRIO COUNTIES.

* LOCATIONS IN THE WARNING INCLUDE NATALIA...DEVINE AND MOORE.

RAINFALL AMOUNTS OF THREE TO FOUR INCHES WILL BE COMMON IN THE
STRETCH OF INTERSTATE 35 NORTH OF PEARSALL AND SOUTH OF LYTLE.

BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE
DANGERS OF FLOODING. IF FLASH FLOODING IS OBSERVED ACT QUICKLY. MOVE
UP TO HIGHER GROUND. DO NOT STAY IN FLOOD PRONE AREAS.

LAT...LON 2933 9882 2899 9883 2883 9900 2887 9920
      2901 9940 2927 9914

$$
1 follow-up statement
000 
WGUS74 KEWX 110418
FFSEWX

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
1116 PM CDT SAT SEP 10 2005

TXC163-325-110545-
MEDINA TX-FRIO TX-
1116 PM CDT SAT SEP 10 2005

...A FLASH FLOOD WARNING CONTINUES UNTIL 1245 AM CDT FOR FRIO AND
MEDINA COUNTIES...

AT 1112 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE MODERATE RAIN OVER NORTHERN FRIO AND SOUTHERN MEDINA 
COUNTIES. RAIN WILL GRADUALLY DIMINISH...BUT RUNOFF WILL CONTINUE
UNTIL AFTER MIDNIGHT.

LOCATIONS IN THE WARNING INCLUDE BIG FOOT...YANCEY...NATALIA AND
DEVINE.

HEAVY RAINFALL WILL CAUSE FLASH FLOODING OVER SMALL CREEKS AND
STREAMS...URBAN AREAS...HIGHWAYS...STREETS...UNDERPASSES AND POORLY
DRAINED AREAS.

BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE
DANGERS OF FLOODING. IF FLASH FLOODING IS OBSERVED ACT QUICKLY. MOVE
UP TO HIGHER GROUND. DO NOT STAY IN FLOOD PRONE AREAS.

LAT...LON 2933 9882 2899 9883 2883 9900 2887 9920
      2901 9940 2927 9914

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Sep 11, 6:54 AM CDTFlash Flood WarningEWXMedina3 hr
Sep 11, 11:18 AM CDTFlash Flood WarningEWXCaldwell, Hays, Travis3 hr
Sep 11, 1:10 PM CDTFlash Flood WarningEWXMedina3 hr
Sep 11, 1:17 PM CDTFlash Flood WarningEWXAtascosa, Bexar3 hr

Nearby

Flash Flood Warnings in Texas, 2005Every flash flood warning in 2005

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.