Alert archive / Texas / Flash Flood Warnings in 2007

Flash Flood Warning 18, NWS Austin/San Antonio, TX

January 13, 2007Comal County, Guadalupe County, Texas

NWS Austin/San Antonio, TX issued this flash flood warning at Jan 13, 2007, 10:32 AM CST for Comal County, Guadalupe 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
Jan 13, 2007, 10:32 AM CST (16:32 UTC)
Expired
Jan 13, 2007, 1:30 PM CST
In force
3 hr
Issued by
NWS Austin/San Antonio, TX
Area
Whole counties

Counties Comal County, TX, Guadalupe County, TX

The radar

The Austin/San Antonio radar (KEWX), 8 km from the middle of the area, began a volume at 16:31 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

Corpus Christi, TX (KCRP), launched 12:00Z, 4.5 hours before the alert went out and 231 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, Corpus Christi, TX at 12:00Z on 2007-01-13Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 624 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, Corpus Christi, TX at 12:00Z on 2007-01-13The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 123 square meters per square second.19395878Sfc1 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
624 J/kg
Mixed-layer CIN
-16 J/kg
Mixed-layer LCL
621 m above ground
0-6 km bulk shear
41 kt
0-1 km storm-relative helicity
123 m²/s²
0-3 km storm-relative helicity
220 m²/s²
Significant tornado parameter
0.5
Supercell composite
4.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
WGUS54 KEWX 131634
FFWEWX
TXC091-187-131930-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
1032 AM CST SAT JAN 13 2007

THE NATIONAL WEATHER SERVICE IN AUSTIN SAN ANTONIO HAS ISSUED A

* FLASH FLOOD WARNING FOR THE FOLLOWING COUNTIES...
  COMAL
  GUADALUPE

* UNTIL 130 PM CST

* AT 1026 AM CST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
  MODERATE TO HEAVY RAINS FROM NORTH OF SEGUIN TO NEW BRAUNFELS TO
  CANYON LAKE. RAINFALL RATES OF UP TO ONE INCH PER HOUR WERE NOTED.
  THE RAINS WERE MOVING NORTHEAST AT 25 MPH. THIS RAIN WILL ADD
  TO THE FLASH FLOODING CURRENTLY OCCURRING IN THE WARNING AREA.

* LOCATIONS IN THE WARNING INCLUDE ZORN AND SMITHSON VALLEY

WHEN WATER COVERS THE ROAD...TURN AROUND DONT DROWN. THE LIFE YOU
SAVE MAY BE YOUR OWN.

MOST FLOOD DEATHS OCCUR IN AUTOMOBILES. DO NOT DRIVE THROUGH FLOODED
AREAS...ESPECIALLY AT NIGHT. STAY TUNED TO NOAA WEATHER RADIO OR
LOCAL NEWS MEDIA FOR THE LATEST FLOOD INFORMATION.

REPORT FLASH FLOODING TO THE NEAREST LAW ENFORCEMENT AGENCY FOR RELAY
TO THE NATIONAL WEATHER SERVICE.

LAT...LON 2964 9835 2941 9809 2966 9779 2994 9823

$$
2 follow-up statements
000 
WGUS74 KEWX 131816
FFSEWX

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
1215 PM CST SAT JAN 13 2007

TXC091-187-131930-
COMAL TX-GUADALUPE TX-
1215 PM CST SAT JAN 13 2007

...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 130 PM CST FOR
GUADALUPE AND COMAL COUNTIES...

AT 1209 PM CST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED 
ONLY LIGHT RAINS ACROSS COMAL AND GUADALUPE COUNTIES. RAINFALL RATES 
OF LESS THAN ONE QUARTER INCH WERE NOTED. THE RAINS WERE MOVING... 
NORTHEAST AT 25 MPH.

NUMEROUS ROADS REMAIN CLOSED ACROSS COMAL AND GUADALUPE COUNTIES. 

LOCATIONS IN THE WARNING INCLUDE ZORN...SMITHSON VALLEY...NEW
BRAUNFELS AND GERONIMO

WHEN WATER COVERS THE ROAD...TURN AROUND DONT DROWN. THE LIFE YOU
SAVE MAY BE YOUR OWN.

LAT...LON 2964 9835 2941 9809 2966 9779 2994 9823

$$
000 
WGUS74 KEWX 131932
FFSEWX

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
131 PM CST SAT JAN 13 2007

TXC091-187-131941-
COMAL TX-GUADALUPE TX-
131 PM CST SAT JAN 13 2007

...THE FLASH FLOOD WARNING HAS EXPIRED FOR GUADALUPE AND COMAL
COUNTIES...

AT 130 PM CST...NATIONAL WEATHER SERVICE DOPPLER RADAR SHOWED ONLY 
LIGHT RAINS ACROSS COMAL AND GUADALUPE COUNTIES. AS A RESULT...THE 
THREAT FOR ADDITIONAL FLASH FLOODING HAS ENDED. HOWEVER...NUMEROUS 
ROADS REMAIN CLOSED AND STREAMS ARE RUNNING HIGH FROM EARLIER HEAVY 
RAINS. 

LAT...LON 2964 9835 2941 9809 2966 9779 2994 9823

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Jan 13, 6:25 AM CSTFlash Flood WarningEWXHays, Travis3 hr
Jan 13, 7:24 AM CSTFlash Flood WarningEWXComal, Guadalupe3 hr
Jan 13, 8:44 AM CSTFlash Flood WarningEWXWilliamson2 hr
Jan 13, 9:25 AM CSTFlash Flood WarningEWXHays, Travis2 hr
Jan 13, 10:13 AM CSTFlash Flood WarningEWXBlanco, Kendall3 hr
Jan 13, 10:45 AM CSTFlash Flood WarningEWXWilliamson3 hr
Jan 13, 11:11 AM CSTFlash Flood WatchEWXAtascosa, Bastrop, Bexar, Blanco, Burnet, Caldwell and 15 more9 hr
Jan 13, 11:16 AM CSTFlash Flood WarningEWXHays, Travis2 hr
Jan 13, 12:20 PM CSTWinter Storm WatchEWXAtascosa, Bexar, DeWitt, Dimmit, Frio, Gonzales and 10 more16 hr
Jan 13, 12:20 PM CSTWinter Storm WarningEWXAtascosa, Bandera, Bastrop, Bexar, Blanco, Burnet and 27 more4 days
Jan 13, 1:16 PM CSTFlash Flood WarningEWXBlanco119 min

Nearby

Flash Flood Warnings in Texas, 2007Every flash flood warning in 2007

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.