Alert archive / Texas / Flash Flood Warnings in 2016

Flash Flood Warning 87, NWS Austin/San Antonio, TX

August 21, 20165 counties in Texas

NWS Austin/San Antonio, TX issued this flash flood warning at Aug 21, 2016, 11:25 AM CDT for 5 counties in Texas. It was in force for 5 hr. 2 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 21, 2016, 11:25 AM CDT (16:25 UTC)
Expired: Aug 21, 2016, 4:15 PM CDT
In force: 5 hr
Issued by: NWS Austin/San Antonio, TX
Area: Storm-based polygon
Flood severity: None

Counties DeWitt County, TX, Gonzales County, TX, Guadalupe County, TX, Karnes County, TX, Wilson County, TX

The radar

The Austin/San Antonio radar (KEWX), 93 km from the middle of the area, began a volume at 16:26 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 21, 1:04 PM CDT	FLASH FLOOD	Gillett, TX	THE KARNES COUNTY SHERIFF OFFICE IS REPORTING WATER OVER HIGHWAY 80 NEAR GILLETT.
Aug 21, 1:46 PM CDT	FLASH FLOOD	Stockdale, TX	SHERIFF OFFICE IN WILSON COUNTY REPORTED HIGHWAY 87 IS CLOSED IN STOCKDALE DUE TO HIGH WATER.

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 12:00Z, 4.4 hours before the alert went out and 137 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: 3532 J/kg
Mixed-layer CIN: -3 J/kg
Mixed-layer LCL: 521 m above ground
0-6 km bulk shear: 8 kt
0-1 km storm-relative helicity: -14 m²/s²
0-3 km storm-relative helicity: -14 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

721 
WGUS54 KEWX 211625
FFWEWX
TXC123-177-187-255-493-211915-
/O.NEW.KEWX.FF.W.0087.160821T1625Z-160821T1915Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
1125 AM CDT SUN AUG 21 2016

THE NATIONAL WEATHER SERVICE IN AUSTIN SAN ANTONIO HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  KARNES COUNTY IN SOUTH CENTRAL TEXAS...
  SOUTHWESTERN DEWITT COUNTY IN SOUTH CENTRAL TEXAS...
  SOUTHWESTERN GONZALES COUNTY IN SOUTH CENTRAL TEXAS...
  SOUTHEASTERN GUADALUPE COUNTY IN SOUTH CENTRAL TEXAS...
  EASTERN WILSON COUNTY IN SOUTH CENTRAL TEXAS...

* UNTIL 215 PM CDT

* AT 1122 AM CDT...DOPPLER RADAR INDICATED THUNDERSTORMS PRODUCING
  HEAVY RAIN ACROSS THE WARNED AREA. UP TO TWO INCHES OF RAIN HAVE
  ALREADY FALLEN. FLASH FLOODING IS EXPECTED TO BEGIN SHORTLY. THIS
  AREA HAS ALREADY EXPERIENCED FLASH FLOODING OVERNIGHT AND WITH THE
  GROUND SATURATED...ADDITIONAL FLASH FLOODING IS IMMINENT AS THIS
  NEW ACTIVITY MOVES NORTH AT 20 MPH.

* SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
  KENEDY...KARNES CITY...POTH...STOCKDALE...KOSCIUSKO...NIXON...
  RUNGE...FALLS CITY...SMILEY...GILLETT...PANDORA...CESTOHOWA...
  EL OSO...WRIGHTSBORO...BELMONT...PANA MARIA...MONTHALIA...
  NEW DAVY...CHOATE AND HOBSON.

ADDITIONAL RAINFALL AMOUNTS OF 1 TO 2 INCHES ARE POSSIBLE IN THE
WARNED AREA.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 2868 9779 2867 9782 2872 9792 2869 9801
      2891 9822 2958 9782 2944 9746 2900 9762
      2874 9767 2867 9778

$$

YURA

3 follow-up statements

393 
WGUS74 KEWX 211857
FFSEWX

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

TXC123-177-187-255-493-211915-
/O.CON.KEWX.FF.W.0087.000000T0000Z-160821T1915Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
KARNES TX-DEWITT TX-GONZALES TX-GUADALUPE TX-WILSON TX-
157 PM CDT SUN AUG 21 2016

...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 215 PM CDT FOR
KARNES...SOUTHWESTERN DEWITT...SOUTHWESTERN GONZALES...SOUTHEASTERN
GUADALUPE AND EASTERN WILSON COUNTIES...

AT 152 PM CDT...DOPPLER RADAR INDICATED SCATTERED RAIN SHOWERS AND
ISOLATED THUNDERSTORMS ACROSS THE WARNED AREA. UP TO TWO INCHES OF
RAIN HAVE ALREADY FALLEN AND AN ADDITIONAL ONE TO TWO INCHES IS
LIKELY OVER THE REMAINDER OF THE AFTERNOON HOURS. MULTIPLE ROADS ARE
CLOSED AS SOME AREAS HAVE SEEN RAIN TOTALS OVER 10 INCHES SINCE LATE
LAST NIGHT.  ROADS IN BETWEEN KARNES CITY...STOCKDALE...AND NIXON
ARE FLOODED.  AVOID THAT AREA AS TRAVEL IS DIFFICULT AND HAZARDOUS.

SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
KENEDY...KARNES CITY...POTH...STOCKDALE...KOSCIUSKO...NIXON...
RUNGE...FALLS CITY...SMILEY...GILLETT...PANDORA...CESTOHOWA...
EL OSO...WRIGHTSBORO...BELMONT...PANA MARIA...MONTHALIA...NEW DAVY...
CHOATE AND HOBSON.


PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 2868 9779 2867 9782 2872 9792 2869 9801
      2891 9822 2958 9782 2944 9746 2900 9762
      2874 9767 2867 9778

$$

YURA

325 
WGUS54 KEWX 211911
FFWEWX
TXC123-177-187-255-493-212115-
/O.EXT.KEWX.FF.W.0087.000000T0000Z-160821T2115Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

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

THE NATIONAL WEATHER SERVICE IN AUSTIN SAN ANTONIO HAS EXTENDED THE

* FLASH FLOOD WARNING FOR...
  KARNES COUNTY IN SOUTH CENTRAL TEXAS...
  SOUTHWESTERN DEWITT COUNTY IN SOUTH CENTRAL TEXAS...
  SOUTHWESTERN GONZALES COUNTY IN SOUTH CENTRAL TEXAS...
  SOUTHEASTERN GUADALUPE COUNTY IN SOUTH CENTRAL TEXAS...
  EASTERN WILSON COUNTY IN SOUTH CENTRAL TEXAS...

* UNTIL 415 PM CDT

* AT 206 PM CDT...DOPPLER RADAR INDICATED AREAS OF LIGHT TO MODERATE
  RAIN ACROSS THE WARNED AREA. TWO TO THREE INCHES OF ADDITIONAL
  RAIN HAS FALLEN OVER THE PAST SEVERAL HOURS LEADING TO CONTINUED
  FLOODING CONCERNS. MANY ROADS REMAIN INUNDATED MAKING TRAVEL
  DIFFICULT. FLASH FLOODING WILL CONTINUE TO BE A THREAT OVER THE
  NEXT FEW HOURS DESPITE MUCH OF THE HEAVIEST RAIN SHIFTING TO THE
  EAST. REMEMBER...TURN AROUND DON'T DROWN.

* SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
  KENEDY...KARNES CITY...POTH...STOCKDALE...KOSCIUSKO...NIXON...
  RUNGE...FALLS CITY...SMILEY...GILLETT...PANDORA...CESTOHOWA...
  EL OSO...WRIGHTSBORO...BELMONT...PANA MARIA...MONTHALIA...
  NEW DAVY...CHOATE AND HOBSON.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 2868 9779 2867 9782 2872 9792 2869 9801
      2891 9822 2958 9782 2944 9746 2900 9762
      2874 9767 2867 9778

$$

YURA

733 
WGUS74 KEWX 212122
FFSEWX

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

TXC123-177-187-255-493-212125-
/O.EXP.KEWX.FF.W.0087.000000T0000Z-160821T2115Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
KARNES TX-DEWITT TX-GONZALES TX-GUADALUPE TX-WILSON TX-
422 PM CDT SUN AUG 21 2016

...THE FLASH FLOOD WARNING FOR KARNES...SOUTHWESTERN DEWITT...
SOUTHWESTERN GONZALES...SOUTHEASTERN GUADALUPE AND EASTERN WILSON
COUNTIES HAS EXPIRED...

THE HEAVY RAIN HAS ENDED. FLOODING IS NO LONGER EXPECTED TO POSE
A THREAT. HOWEVER...RUNOFF FROM EARLIER HEAVY RAINFALL WILL 
CONTINUE THROUGH THIS EVENING. PLEASE CONTINUE TO HEED ANY 
REMAINING ROAD CLOSURES.

LAT...LON 2868 9779 2867 9782 2872 9792 2869 9801
      2891 9822 2958 9782 2944 9746 2900 9762
      2874 9767 2867 9778

$$

PLATT

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 20, 7:03 PM CDT	Flash Flood Warning	EWX	Atascosa, Gonzales, Guadalupe, Wilson	9 hr
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, 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.