Alert archive / Texas / Flash Flood Warnings in 2010

Flash Flood Warning 39, NWS Austin/San Antonio, TX

June 8, 2010Atascosa County, Wilson County, Texas

NWS Austin/San Antonio, TX issued this flash flood warning at Jun 8, 2010, 9:47 PM CDT for Atascosa County, Wilson County, Texas. It was in force for 3 hr. 1 report came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued: Jun 8, 2010, 9:47 PM CDT (02:47 UTC)
Expired: Jun 9, 2010, 12:45 AM CDT
In force: 3 hr
Issued by: NWS Austin/San Antonio, TX
Area: Storm-based polygon
Flood severity: None

Counties Atascosa County, TX, Wilson County, TX

The radar

The Austin/San Antonio radar (KEWX), 92 km from the middle of the area, began a volume at 02:48 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.

What was reported inside it

Time	Report	Where	Remark
Jun 8, 11:05 PM CDT	FLASH FLOOD	10 Ne Pleasanton, TX	COUNTY RD 536 CLOSED FROM I37 TO THE WILSON CO LINE... FM 1784 CLOSED NORTH OF VERDE ADDITIONAL RAODS CLOSED IN THE NORTHEAST CORNER OF THE CO.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Corpus Christi, TX (KCRP), launched 00:00Z, 2.8 hours before the alert went out and 162 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: 1547 J/kg
Mixed-layer CIN: -2 J/kg
Mixed-layer LCL: 729 m above ground
0-6 km bulk shear: 30 kt
0-1 km storm-relative helicity: 128 m²/s²
0-3 km storm-relative helicity: 229 m²/s²
Significant tornado parameter: 1.6
Supercell composite: 12.4

Open this sounding in Storm Lab

The text

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

530 
WGUS54 KEWX 090247
FFWEWX
TXC013-493-090545-
/O.NEW.KEWX.FF.W.0039.100609T0247Z-100609T0545Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
947 PM CDT TUE JUN 8 2010

THE NATIONAL WEATHER SERVICE IN AUSTIN SAN ANTONIO HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  EASTERN ATASCOSA COUNTY...
  WILSON COUNTY...

* UNTIL 1245 AM CDT.

* AT 942 PM CDT...NATIONAL WEATHER SERVICE RADAR CONTINUED TO SHOW
  AN AREA OF SHOWERS AND THUNDERSTORMS FROM THE EASTERN PART OF
  ATASCOSA COUNTY TO PARTS OF WILSON COUNTY...MOVING SLOWLY TO
  THE NORTHEAST AT 5 MPH. 

HIGHWAY 97 EAST OF INTERSTATE 37 WAS CLOSED FOR HIGH WATER...THAT
HAS COME FROM LOCALLY HEAVY RAINS OVER THE EASTERN PART OF
ATASCOSA COUNTY.  

PRECAUTIONARY/PREPAREDNESS ACTIONS...

WHEN WATER COVERS THE ROAD...TURN AROUND DON'T DROWN. THE LIFE YOU
SAVE MAY BE YOUR OWN.

&&

LAT...LON 2869 9852 2898 9854 2938 9815 2915 9789
      2888 9819 2886 9818 2868 9839

$$

1 follow-up statement

688 
WGUS74 KEWX 090401
FFSEWX

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
1101 PM CDT TUE JUN 8 2010

TXC013-493-090545-
/O.CON.KEWX.FF.W.0039.000000T0000Z-100609T0545Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
WILSON TX-ATASCOSA TX-
1101 PM CDT TUE JUN 8 2010

...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 1245 AM CDT FOR
EASTERN ATASCOSA AND WILSON COUNTIES...

AT 1054 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR SHOWS 
SHOWERS AND THUNDERSTORMS PRODUCING LOCALLY HEAVY RAINFALL AND 
RAINFALL AMOUNTS OVER AN INCH.  THIS STORM WAS LOCATED 8 MILES SOUTHWEST 
OF POTH...MOVING NORTHEAST AT 5 MPH.

OTHER LOCATIONS IN THE WARNING AREA INCLUDE FLORESVILLE AND
SUTHERLAND SPRINGS.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

WHEN WATER COVERS THE ROAD...TURN AROUND DON'T DROWN. THE LIFE YOU
SAVE MAY BE YOUR OWN.

DO NOT DRIVE WHERE WATER COVERS THE ROAD. EVEN SUVS AND PICKUPS WILL
BE SWEPT AWAY BY AS LITTLE AS TWO FEET OF RUSHING WATER. TURN AROUND
DON'T DROWN.

&&

LAT...LON 2869 9852 2898 9854 2938 9815 2915 9789
      2888 9819 2886 9818 2868 9839

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 8, 8:21 PM CDT	Areal Flood Advisory	EWX	Atascosa, Wilson	2 hr
Jun 8, 10:10 PM CDT	Areal Flood Advisory	EWX	Bexar, Comal, Guadalupe	110 min
Jun 8, 10:51 PM CDT	Flash Flood Warning	EWX	Bexar, Comal, Guadalupe	4 hr
Jun 9, 12:47 AM CDT	Flash Flood Warning	EWX	Atascosa, Bexar, Guadalupe, Wilson	3 hr
Jun 9, 1:57 AM CDT	Areal Flood Advisory	EWX	Caldwell, Guadalupe, Hays, Travis	2 hr
Jun 9, 2:47 AM CDT	Flash Flood Warning	EWX	Caldwell, Comal, Guadalupe, Hays, Travis	4 hr
Jun 9, 3:21 AM CDT	Areal Flood Advisory	EWX	Bexar	3 hr
Jun 9, 3:28 AM CDT	Areal Flood Advisory	EWX	Williamson	3 hr
Jun 9, 3:44 AM CDT	Flash Flood Warning	EWX	Travis, Williamson	4 hr
Jun 9, 4:08 AM CDT	Flash Flood Warning	EWX	Bexar, Comal, Guadalupe	4 hr
Jun 9, 4:33 AM CDT	Areal Flood Advisory	EWX	Bastrop, Caldwell, Lee, Travis, Williamson	117 min
Jun 9, 5:57 AM CDT	Flash Flood Warning	EWX	Bastrop, Lee	3 hr
Jun 9, 6:49 AM CDT	Areal Flood Advisory	EWX	Caldwell, Guadalupe, Hays, Travis	2 hr
Jun 9, 6:59 AM CDT	Hydrologic Warning	EWX	Comal, Gonzales, Guadalupe	8 hr
Jun 9, 7:01 AM CDT	Areal Flood Advisory	EWX	Lee	119 min
Jun 9, 7:55 AM CDT	Flash Flood Warning	EWX	Comal, Guadalupe, Hays	4 hr
Jun 9, 8:29 AM CDT	River Flood Warning	EWX	Comal, Guadalupe	13 hr
Jun 9, 8:29 AM CDT	River Flood Warning	EWX	Comal, Guadalupe	13 hr
Jun 9, 8:29 AM CDT	Severe Thunderstorm Warning	EWX	Caldwell, Gonzales, Guadalupe	61 min
Jun 9, 9:01 AM CDT	River Flood Warning	EWX	Guadalupe	13 hr
Jun 9, 9:18 AM CDT	Areal Flood Advisory	EWX	Bastrop, Lee	2 hr
Jun 9, 9:21 AM CDT	Severe Thunderstorm Warning	EWX	Fayette, Gonzales, Lavaca	54 min
Jun 9, 9:40 AM CDT	Areal Flood Advisory	EWX	Fayette, Gonzales, Lavaca	110 min
Jun 9, 10:13 AM CDT	River Flood Warning	EWX	Caldwell, Gonzales	34 hr
Jun 9, 10:13 AM CDT	River Flood Warning	EWX	Gonzales	58 hr
Jun 9, 10:14 AM CDT	Severe Thunderstorm Warning	EWX	Fayette	61 min
Jun 9, 10:22 AM CDT	Areal Flood Advisory	EWX	Fayette	2 hr
Jun 9, 1:13 PM CDT	Areal Flood Advisory	EWX	Bastrop, Fayette	107 min
Jun 9, 2:48 PM CDT	Areal Flood Advisory	EWX	Llano	2 hr
Jun 9, 3:42 PM CDT	Areal Flood Advisory	EWX	Gillespie, Llano	108 min
Jun 9, 4:07 PM CDT	Severe Thunderstorm Warning	EWX	Gillespie, Llano	53 min
Jun 9, 4:13 PM CDT	River Flood Warning	EWX	DeWitt	3 days
Jun 9, 4:43 PM CDT	Severe Thunderstorm Warning	EWX	Gillespie	47 min

Nearby

Flash Flood Warnings in Texas, 2010 Every flash flood warning in 2010

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.