Alert archive / Texas / Flash Flood Warnings in 2016

Flash Flood Warning 80, NWS Austin/San Antonio, TX

August 20, 20164 counties in Texas

NWS Austin/San Antonio, TX issued this flash flood warning at Aug 20, 2016, 7:03 PM CDT for 4 counties in Texas. It was in force for 9 hr. 4 reports 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: Aug 20, 2016, 7:03 PM CDT (00:03 UTC)
Expired: Aug 21, 2016, 4:00 AM CDT
In force: 9 hr
Issued by: NWS Austin/San Antonio, TX
Area: Storm-based polygon
Flood severity: None

Counties Atascosa County, TX, Gonzales County, TX, Guadalupe County, TX, Wilson County, TX

The radar

The Austin/San Antonio radar (KEWX), 69 km from the middle of the area, began a volume at 00:02 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
Aug 20, 7:45 PM CDT	FLASH FLOOD	1 Nnw Floresville, TX	MULTIPLE COUNTY ROADS CLOSED OR IN THE PROCESS OF BEING CLOSED ACROSS THE COUNTY. CR 301 IS SHUT DOWN...CR 307 AND 539 IN THE PROCESS OF BEING CLOSED DUE TO WATER.
Aug 20, 8:45 PM CDT	FLASH FLOOD	4 Nne Coughran, TX	WATER RESCUES AND CARS STALLED DUE TO TO FLOOD WATER EAST OF PLEASANTON. PARTS OF HWY 97 ALSO CLOSED DUE TO FLOODING BETWEEN PLEASANTON AND FLORESVILLE.
Aug 20, 11:59 PM CDT	FLASH FLOOD	8 Sse Zipp, TX	500 BLOCK OF JAMES COLONY ROAD AND THE 200 BLOCK OF GOOD LUCK ROAD ARE CLOSED DUE TO FLOODING.
Aug 21, 12:31 AM CDT	FLASH FLOOD	Floresville, TX	HIGHWATER RESCUES EARLIER IN STOCKDALE WITH ONGOING WATER RESCUE NEAR ROSEBUD OFF OF SUTHERLAND SPRINGS ROAD. WATER IS NEAR BUT NOT IN HOMES NEAR ROSEBUD. OTHER HIGH WATER RESCUES EARLIER AT GOLIAD ROAD AND PEACH STREET NEAR FM 536. ALSO PARTS OF HWY 181 BLOCK

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, 0.1 hours before the alert went out and 172 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: 1565 J/kg
Mixed-layer CIN: -34 J/kg
Mixed-layer LCL: 1049 m above ground
0-6 km bulk shear: 21 kt
0-1 km storm-relative helicity: 43 m²/s²
0-3 km storm-relative helicity: 96 m²/s²
Significant tornado parameter: 0.5
Supercell composite: 3.8

Open this sounding in Storm Lab

The text

As transmitted.

499 
WGUS54 KEWX 210003
FFWEWX
TXC013-177-187-493-210300-
/O.NEW.KEWX.FF.W.0080.160821T0003Z-160821T0300Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
703 PM CDT SAT AUG 20 2016

THE NATIONAL WEATHER SERVICE IN AUSTIN SAN ANTONIO HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  WESTERN GONZALES COUNTY IN SOUTH CENTRAL TEXAS...
  SOUTHEASTERN GUADALUPE COUNTY IN SOUTH CENTRAL TEXAS...
  WILSON COUNTY IN SOUTH CENTRAL TEXAS...
  EASTERN ATASCOSA COUNTY IN SOUTH CENTRAL TEXAS...

* UNTIL 1000 PM CDT

* AT 701 PM CDT...DOPPLER RADAR INDICATED THUNDERSTORMS PRODUCING
  HEAVY RAIN ACROSS THE WARNED AREA. FLASH FLOODING IS BEGINNING AND
  EXPECTED TO WORSEN OVER THE NEXT FEW HOURS. AREAS SUCH AS
  FLORESVILLE HAVE ALREADY RECEIVED MULTIPLE INCHES OF RAIN WITH
  ANOTHER 2-4 INCHES OF RAIN POSSIBLE OVER THE NEXT 3 HOURS.

* SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
  PLEASANTON...GONZALES...FLORESVILLE...JOURDANTON...POTH...
  STOCKDALE...CHRISTINE...CAMPBELLTON...KOSCIUSKO...NIXON...
  ST. HEDWIG...LA VERNIA...NEW BERLIN...PANDORA...PALMETO...
  SUTHERLAND SPRINGS...WRIGHTSBORO...BELMONT...MONTHALIA AND OTTINE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TURN AROUND...DON'T DROWN WHEN ENCOUNTERING FLOODED ROADS. MOST FLOOD
DEATHS OCCUR IN VEHICLES.

PLEASE REPORT FLOODING TO YOUR LOCAL LAW ENFORCEMENT AGENCY WHEN YOU
CAN DO SO SAFELY.

A FLASH FLOOD WARNING MEANS THAT FLOODING IS IMMINENT OR OCCURRING.
IF YOU ARE IN THE WARNED AREA MOVE TO HIGHER GROUND IMMEDIATELY.
RESIDENTS LIVING ALONG STREAMS AND CREEKS SHOULD TAKE IMMEDIATE
PRECAUTIONS TO PROTECT LIFE AND PROPERTY.

&&

LAT...LON 2865 9866 2913 9844 2912 9840 2944 9814
      2960 9783 2966 9765 2947 9739 2888 9819
      2879 9811 2865 9831

$$

TB3

4 follow-up statements

236 
WGUS74 KEWX 210133
FFSEWX

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
833 PM CDT SAT AUG 20 2016

TXC013-177-187-493-210300-
/O.CON.KEWX.FF.W.0080.000000T0000Z-160821T0300Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
GONZALES TX-GUADALUPE TX-WILSON TX-ATASCOSA TX-
833 PM CDT SAT AUG 20 2016

...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 1000 PM CDT FOR
WESTERN GONZALES...SOUTHEASTERN GUADALUPE...WILSON AND EASTERN
ATASCOSA COUNTIES...

AT 830 PM CDT...DOPPLER RADAR AND AUTOMATED RAIN GAUGES INDICATED
NEARLY STATIONARY THUNDERSTORMS PRODUCING HEAVY RAIN OVER THE WARNED
AREA. OVER 4 INCHES OF RAIN HAVE FALLEN IN PARTS OF WILSON AND
ATASCOSA COUNTIES. ANOTHER 2 TO 3 INCHES OF RAIN ARE POSSIBLE OVER
THE NEXT COUPLE HOURS. FLASH FLOODING IS EXPECTED TO CONTINUE OR
WORSEN ACROSS THE WARNED AREA.

SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
PLEASANTON...GONZALES...FLORESVILLE...JOURDANTON...POTH...
STOCKDALE...CHRISTINE...CAMPBELLTON...KOSCIUSKO...NIXON...
ST. HEDWIG...LA VERNIA...NEW BERLIN...PANDORA...PALMETO...
SUTHERLAND SPRINGS...WRIGHTSBORO...BELMONT...MONTHALIA AND OTTINE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TURN AROUND...DON'T DROWN WHEN ENCOUNTERING FLOODED ROADS. MOST FLOOD
DEATHS OCCUR IN VEHICLES.

PLEASE REPORT FLOODING TO YOUR LOCAL LAW ENFORCEMENT AGENCY WHEN YOU
CAN DO SO SAFELY.

A FLASH FLOOD WARNING MEANS THAT FLOODING IS IMMINENT OR OCCURRING.
IF YOU ARE IN THE WARNED AREA MOVE TO HIGHER GROUND IMMEDIATELY.
RESIDENTS LIVING ALONG STREAMS AND CREEKS SHOULD TAKE IMMEDIATE
PRECAUTIONS TO PROTECT LIFE AND PROPERTY.

&&

LAT...LON 2865 9866 2913 9844 2912 9840 2944 9814
      2960 9783 2966 9765 2947 9739 2888 9819
      2879 9811 2865 9831

$$

TB3

168 
WGUS54 KEWX 210232
FFWEWX
TXC013-177-187-493-210700-
/O.EXT.KEWX.FF.W.0080.000000T0000Z-160821T0700Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
932 PM CDT SAT AUG 20 2016

THE NATIONAL WEATHER SERVICE IN AUSTIN SAN ANTONIO HAS EXTENDED THE

* FLASH FLOOD WARNING FOR...
  WESTERN GONZALES COUNTY IN SOUTH CENTRAL TEXAS...
  SOUTHEASTERN GUADALUPE COUNTY IN SOUTH CENTRAL TEXAS...
  WILSON COUNTY IN SOUTH CENTRAL TEXAS...
  EASTERN ATASCOSA COUNTY IN SOUTH CENTRAL TEXAS...

* UNTIL 200 AM CDT

* AT 929 PM CDT...EMERGENCY MANAGEMENT OFFICIALS REPORTED HEAVY RAIN
  AND FLASH FLOODING ACROSS THE WARNED AREA. DOPPLER RADAR ESTIMATES
  OVER 6 INCHES OF RAIN HAVE FALLEN NEAR SUTHERLAND
  SPRINGS...STOCKDALE...AND FLORESVILLE. THIS HAS RESULTED IN
  MULTIPLE ROAD CLOSURES ACROSS THE COUNTY. AN ADDITIONAL 2 TO 3
  INCHES OF RAIN IS POSSIBLE OVER THE NEXT SEVERAL HOURS. 

* SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
  PLEASANTON...GONZALES...FLORESVILLE...JOURDANTON...POTH...
  STOCKDALE...CHRISTINE...CAMPBELLTON...KOSCIUSKO...NIXON...
  ST. HEDWIG...LA VERNIA...NEW BERLIN...PANDORA...PALMETO...
  SUTHERLAND SPRINGS...WRIGHTSBORO...BELMONT...MONTHALIA AND OTTINE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TURN AROUND...DON'T DROWN WHEN ENCOUNTERING FLOODED ROADS. MOST FLOOD
DEATHS OCCUR IN VEHICLES.

BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE
DANGERS OF FLOODING.

PLEASE REPORT FLOODING TO YOUR LOCAL LAW ENFORCEMENT AGENCY WHEN YOU
CAN DO SO SAFELY.

&&

LAT...LON 2865 9866 2913 9844 2912 9840 2944 9814
      2960 9783 2966 9765 2947 9739 2888 9819
      2879 9811 2865 9831

$$

TB3

505 
WGUS74 KEWX 210531
FFSEWX

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
1231 AM CDT SUN AUG 21 2016

TXC013-177-187-493-210700-
/O.CON.KEWX.FF.W.0080.000000T0000Z-160821T0700Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
GONZALES TX-GUADALUPE TX-WILSON TX-ATASCOSA TX-
1231 AM CDT SUN AUG 21 2016

...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 200 AM CDT FOR
WESTERN GONZALES...SOUTHEASTERN GUADALUPE...WILSON AND EASTERN
ATASCOSA COUNTIES...

AT 1224 AM CDT...LAW ENFORCEMENT REPORTS THUNDERSTORMS PRODUCING
HEAVY RAIN OVER THE WARNED AREA. NEARLY 6 TO 9 INCHES OF RAIN HAVE
FALLEN OVER THE PAST 4 HOURS PER MEASURED REPORTS AND RADAR
ESTIMATION. FLASH FLOODING IS ONGOING WITH NUMEROUS ROADS CLOSED AND
HIGH WATER RESCUES OCCURRING PER LAW ENFORCEMENT AND EMERGENCY
MANAGEMENT, ESPECIALLY NEAR FLORESVILLE AND STOCKDALE IN WILSON
COUNTY. DO NOT DRIVE INTO FLOODED ROADWAYS ACROSS THESE AREAS!
RAINFALL RATES WILL DECREASE OVER THE NEXT HOUR BUT LIGHT RAIN WILL
CONTINUE THROUGH THE EARLY MORNING HOURS. 

SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
PLEASANTON...GONZALES...FLORESVILLE...JOURDANTON...POTH...
STOCKDALE...CHRISTINE...CAMPBELLTON...KOSCIUSKO...NIXON...
ST. HEDWIG...LA VERNIA...NEW BERLIN...PANDORA...PALMETO...
SUTHERLAND SPRINGS...WRIGHTSBORO...BELMONT...MONTHALIA AND OTTINE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE
DANGERS OF FLOODING.

PLEASE REPORT FLOODING TO YOUR LOCAL LAW ENFORCEMENT AGENCY WHEN YOU
CAN DO SO SAFELY.

A FLASH FLOOD WARNING MEANS THAT FLOODING IS IMMINENT OR OCCURRING.
IF YOU ARE IN THE WARNED AREA MOVE TO HIGHER GROUND IMMEDIATELY.
RESIDENTS LIVING ALONG STREAMS AND CREEKS SHOULD TAKE IMMEDIATE
PRECAUTIONS TO PROTECT LIFE AND PROPERTY.

&&

LAT...LON 2865 9866 2913 9844 2912 9840 2944 9814
      2960 9783 2966 9765 2947 9739 2888 9819
      2879 9811 2865 9831

$$

ALLEN

186 
WGUS54 KEWX 210653
FFWEWX
TXC013-177-187-493-210900-
/O.EXT.KEWX.FF.W.0080.000000T0000Z-160821T0900Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
153 AM CDT SUN AUG 21 2016

THE NATIONAL WEATHER SERVICE IN AUSTIN SAN ANTONIO HAS EXTENDED THE

* FLASH FLOOD WARNING FOR...
  WESTERN GONZALES COUNTY IN SOUTH CENTRAL TEXAS...
  SOUTHEASTERN GUADALUPE COUNTY IN SOUTH CENTRAL TEXAS...
  WILSON COUNTY IN SOUTH CENTRAL TEXAS...
  EASTERN ATASCOSA COUNTY IN SOUTH CENTRAL TEXAS...

* UNTIL 400 AM CDT

* AT 146 AM CDT...DOPPLER RADAR CONTINUED TO DETECT MODERATE TO
  ISOLATED SHOWERS AFFECTING THE WARNED AREAS. THESE SHOWERS ARE
  EXPECTED TO CONTINUE FOR THE NEXT COUPLE OF HOURS. SOME OF THESE
  AREAS HAVE RECEIVED BETWEEN 5 TO 10 INCHES OF RAINFALL PAST 24
  HOURS. ADDITIONAL RAINFALL AMOUNTS OF ONE HALF TO ONE INCH IS
  POSSIBLE.

* SOME LOCATIONS THAT WILL CONTINUE TO EXPERIENCE FLOODING INCLUDE...
  PLEASANTON...GONZALES...FLORESVILLE...JOURDANTON...POTH...
  STOCKDALE...CHRISTINE...CAMPBELLTON...KOSCIUSKO...NIXON...
  ST. HEDWIG...LA VERNIA...NEW BERLIN...PANDORA...PALMETO...
  SUTHERLAND SPRINGS...WRIGHTSBORO...BELMONT...MONTHALIA AND OTTINE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE
DANGERS OF FLOODING.

PLEASE REPORT FLOODING TO YOUR LOCAL LAW ENFORCEMENT AGENCY WHEN YOU
CAN DO SO SAFELY.

A FLASH FLOOD WARNING MEANS THAT FLOODING IS IMMINENT OR OCCURRING.
IF YOU ARE IN THE WARNED AREA MOVE TO HIGHER GROUND IMMEDIATELY.
RESIDENTS LIVING ALONG STREAMS AND CREEKS SHOULD TAKE IMMEDIATE
PRECAUTIONS TO PROTECT LIFE AND PROPERTY.

&&

LAT...LON 2865 9866 2913 9844 2912 9840 2944 9814
      2960 9783 2966 9765 2947 9739 2888 9819
      2879 9811 2865 9831

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 20, 9:15 PM CDT	Areal Flood Advisory	EWX	Fayette, Gonzales, Lavaca	3 hr
Aug 20, 9:46 PM CDT	River Flood Warning	EWX	Gonzales	3 days
Aug 20, 10:59 PM CDT	Areal Flood Advisory	EWX	Bexar	3 hr
Aug 20, 11:23 PM CDT	River Flood Warning	EWX	Travis	14 hr
Aug 20, 11:32 PM CDT	Areal Flood Advisory	EWX	DeWitt, Gonzales, Karnes	3 hr
Aug 21, 12:39 AM CDT	River Flood Warning	EWX	Karnes	38 hr
Aug 21, 12:45 AM CDT	Areal Flood Advisory	EWX	Lee, Williamson	3 hr
Aug 21, 12:50 AM CDT	Areal Flood Advisory	EWX	DeWitt	3 hr
Aug 21, 1:04 AM CDT	Areal Flood Advisory	EWX	Atascosa, Frio	3 hr
Aug 21, 1:39 AM CDT	Areal Flood Advisory	EWX	Bexar	3 hr
Aug 21, 1:48 AM CDT	Flash Flood Warning	EWX	Atascosa, Bexar, Frio	5 hr
Aug 21, 1:54 AM CDT	Areal Flood Advisory	EWX	Bastrop, Travis	3 hr
Aug 21, 2:27 AM CDT	Areal Flood Advisory	EWX	Comal	3 hr
Aug 21, 3:06 AM CDT	Flash Flood Warning	EWX	Comal	3 hr
Aug 21, 3:17 AM CDT	Areal Flood Advisory	EWX	Travis, Williamson	3 hr
Aug 21, 3:29 AM CDT	River Flood Warning	EWX	DeWitt	58 hr
Aug 21, 4:03 AM CDT	River Flood Warning	EWX	Karnes	24 hr
Aug 21, 4:07 AM CDT	Areal Flood Advisory	EWX	Medina	113 min
Aug 21, 5:04 AM CDT	Areal Flood Advisory	EWX	Bexar	116 min
Aug 21, 5:17 AM CDT	Flash Flood Warning	EWX	Medina	3 hr
Aug 21, 5:21 AM CDT	River Flood Warning	EWX	Gonzales	20 hr
Aug 21, 5:41 AM CDT	River Flood Warning	EWX	Bexar, Wilson	49 hr
Aug 21, 5:41 AM CDT	River Flood Warning	EWX	Bexar	23 hr
Aug 21, 5:52 AM CDT	Flash Flood Warning	EWX	Comal	113 min
Aug 21, 6:01 AM CDT	Areal Flood Advisory	EWX	Kendall	3 hr
Aug 21, 6:19 AM CDT	Areal Flood Advisory	EWX	Travis, Williamson	116 min
Aug 21, 6:38 AM CDT	Flash Flood Warning	EWX	Atascosa, Bexar, Frio	3 hr
Aug 21, 8:41 AM CDT	Areal Flood Advisory	EWX	Uvalde, Zavala	2 hr
Aug 21, 9:23 AM CDT	Flash Flood Warning	EWX	Zavala	3 hr
Aug 21, 10:55 AM CDT	Areal Flood Advisory	EWX	DeWitt, Gonzales, Guadalupe, Karnes, Wilson	110 min
Aug 21, 11:25 AM CDT	Flash Flood Warning	EWX	DeWitt, Gonzales, Guadalupe, Karnes, Wilson	5 hr
Aug 21, 2:42 PM CDT	Areal Flood Advisory	EWX	Fayette	2 hr

Nearby

Flash Flood Warnings in Texas, 2016 Every flash flood warning in 2016

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.