River Flood Warning 117, NWS Austin/San Antonio, TX

295 
WGUS84 KEWX 210222
FLSEWX
FLOOD STATEMENT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
922 PM CDT SAT AUG 20 2016

...The flood warning continues for the following rivers in Texas...

  Onion Creek At Hwy 183 Affecting Travis County
PRECAUTIONARY/PREPAREDNESS ACTIONS...

All persons with interests along the river should monitor 
the latest forecasts, and be prepared to take necessary 
precautions to protect life and property. 

River stage forecasts are based on observed rainfall along with 
predicted rain for the next 12 hours. If actual rainfall varies 
from forecast values, forecast river stages will vary. 

Do not drive automobiles through flooded areas. Remember, 18 inches 
of water or less can carry away most vehicles, including trucks. 

If you see flood waters or come upon a flooded roadway, remember 
to turn around and do not drown. 

For the latest river stages and forecasts visit our web page at 
www.srh.noaa.gov/ewx.

&&

TXC453-211957-
/O.EXT.KEWX.FL.W.0117.000000T0000Z-160821T1957Z/
/ATIT2.1.ER.160821T0059Z.160821T0600Z.160821T0757Z.NO/
922 PM CDT SAT AUG 20 2016

 The flood warning continues for
  the Onion Creek At Hwy 183.
* At  9:00 PM Saturday the stage was 17.8 feet.
* Flood stage is 17.0 feet.
* Minor flooding is occurring and Minor flooding is forecast.
* Forecast...The river will continue rising to near 18.4 feet by after midnight 
  tonight. The river will fall below flood stage during the early morning 
  hours. Additional rainfall could cause additional rises on the creek. 
* Impact...At 17.0 feet...The 12000 block of Old San Antonio Road upstream may 
  be flooded. Neighborhoods along Onion Creek are not affected..

&& 

Below are the latest river stages and forecasts:


                    BF  FLD  Observed            Forecast 7AM
Location           STG  STG    STG    Day Time   Sun   Mon   Tue   Wed   Thu
 Hwy 183            15   17   17.8   Sat 09 PM  14.1   9.2   8.4   8.0   7.6


&&

LAT...LON 3012 9781 3018 9779 3023 9759 3019 9753


$$

421 
WGUS84 KEWX 210814
FLSEWX
FLOOD STATEMENT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
314 AM CDT SUN AUG 21 2016

...The flood warning is cancelled for the following rivers in Texas...

  Barton Creek At Loop 360 Affecting Travis County
  
  Onion Creek At Hwy 183 Affecting Travis County
  
PRECAUTIONARY/PREPAREDNESS ACTIONS...

All persons with interests along the river should monitor 
the latest forecasts, and be prepared to take necessary 
precautions to protect life and property. 

River stage forecasts are based on observed rainfall along with 
predicted rain for the next 12 hours. If actual rainfall varies 
from forecast values, forecast river stages will vary. 

Do not drive automobiles through flooded areas. Remember, 18 inches 
of water or less can carry away most vehicles, including trucks. 

If you see flood waters or come upon a flooded roadway, remember 
to turn around and do not drown. 

For the latest river stages and forecasts visit our web page at 
www.srh.noaa.gov/ewx.

&&

TXC453-210844-
/O.CAN.KEWX.FL.W.0119.000000T0000Z-160821T1851Z/
/ABTT2.1.ER.160821T0551Z.160821T0635Z.160821T0700Z.NO/
314 AM CDT SUN AUG 21 2016

The flood warning is cancelled for
  the Barton Creek At Loop 360.
* At  3:00 AM Sunday the stage was 7.4 feet.
* Flood stage is 8.0 feet.
* Forecast...The creek crested at 8.1 feet at 1 AM and
  has since fallen below flood stage and will continue
  falling steadily.

&&

Below are the latest river stages and forecasts:


                    BF  FLD  Observed            Forecast 7AM
Location           STG  STG    STG    DAY TIME   Sun   Mon   Tue   Wed   Thu
  Loop 360           8    8    7.4   Sun 03 AM   7.2   4.8   4.6   4.4   4.2

&&

LAT...LON 3028 9788 3031 9785 3027 9781 3028 9778
      3025 9774 3022 9781             

$$

TXC453-210844-
/O.CAN.KEWX.FL.W.0117.000000T0000Z-160821T1957Z/
/ATIT2.1.ER.160821T0059Z.160821T0300Z.160821T0631Z.NO/
314 AM CDT SUN AUG 21 2016

The flood warning is cancelled for
  the Onion Creek At Hwy 183.
* At  3:00 AM Sunday the stage was 15.1 feet.
* Flood stage is 17.0 feet.
* Forecast...the creek crested at 18.5 feet at 10 PM 
  on Saturday night and fell below minor flood stage at
  1 AM Sunday morning. The creek is expected to continue
  falling to below action stage by 4 AM Sunday morning.

&&

Below are the latest river stages and forecasts:

                    BF  FLD  Observed            Forecast 7AM
Location           STG  STG    STG    DAY TIME   Sun   Mon   Tue   Wed   Thu
  Hwy 183           15   17   15.1   Sun 03 AM  12.5   8.5   7.9   7.5   7.3


&&

LAT...LON 3012 9781 3018 9779 3023 9759 3019 9753


$$

BMW

Area Forecast Discussion
National Weather Service Austin/San Antonio TX
418 PM CDT SAT AUG 20 2016

...Significant rainfall and flooding probable tonight through
Sunday evening...

.SHORT TERM (Tonight through Sunday Night)...
Showers and thunderstorms continued in close proximity to a weak
cold front/surface boundary sagging south over Central Texas and
an MCV over the I-35 corridor between San Antonio and Austin. In
addition, a weak mid level impulse is moving to the northeast
across Chihuahua state of Mexico to the southwest of the Big Bend
region. PWS of 2 to 2.5 inches indicate a moist tropical airmass
remains over South Central Texas. Expect scattered showers and
thunderstorms for the rest of this afternoon into evening with
some locally heavy rains likely. As the mid level impulse
approaches, showers and thunderstorms increase later this evening
into the overnight hours. A warm core rain event develops with
copious amounts of rainfall due to efficient rainfall production.
Significant flash flooding is becoming more likely. The main focus
of the rain and flooding will be along the I-35 corridor into the
Hill Country with the highest potential in the San Antonio area to
parts of the Austin area. However, there is some uncertainty on
exactly where the heaviest rains will be. The heaviest rains are
expected late this evening and continue into Sunday morning. We
have expanded the Flash Flood Watch to include all of South
Central Texas and runs through 7 PM CDT Sunday. The mid level
impulse could stall over our area by Sunday night prolonging the
heavy rain threat. The Flash Flood Watch may have to be extended
into Sunday night. In addition, there is a potential for
significant river flooding. Travel could become difficult with
numerous roads likely to be closed. We are currently expecting
widespread rainfall amounts of 4 to 8 inches with isolated areas
up to 15 inches possible through Sunday night. Severe storms are
not expected, however, some gusty winds are possible with the
strongest storms. Below normal temperatures can be expected due to
the clouds and rain.

&&

.LONG TERM (Monday through Saturday)...
Monday is a transition day. Tropical moisture lingers while the
Subtropical Ridge begins to build in from the east forcing out the
mid level features. Chances of showers and thunderstorms continue.
By Tuesday, the ridge builds overhead and the airmass dries with
no rain chances for midweek. However, cannot rule out an isolated
shower or thunderstorm along the seabreeze near the Coastal Plains
or drifting into the western Edwards Plateau from the higher
terrain of Mexico or western Texas. Late in the week into next
weekend, deeper moisture begins to move back into the coastal
areas while another weak front moves into northern and western
Texas. POPs come back in the forecast for areas near the Coastal
Plains and across Central Texas. Temperatures slowly warm during
the week as airmass dries leading to decreasing clouds. With
saturated soils, highs will remain near or below normal with no
100s expected.

&&

.PRELIMINARY POINT TEMPS/POPS...
Austin Camp Mabry              72  82  73  88  75 / 100 100  60  40  20
Austin Bergstrom Intl Airport  72  82  73  89  74 / 100 100  60  40  20
New Braunfels Muni Airport     73  83  73  89  75 / 100 100  60  40  20
Burnet Muni Airport            70  80  71  87  73 / 100 100  50  40  20
Del Rio Intl Airport           73  85  73  88  75 /  60  60  70  50  20
Georgetown Muni Airport        71  80  72  87  75 / 100 100  50  40  20
Hondo Muni Airport             73  83  73  90  74 / 100  90  60  40  10
San Marcos Muni Airport        72  81  73  88  75 / 100 100  60  40  20
La Grange - Fayette Regional   74  85  75  91  76 /  70  80  50  40  10
San Antonio Intl Airport       73  83  73  90  76 / 100 100  60  40  20
Stinson Muni Airport           74  84  74  91  76 / 100 100  50  40  10

&&

.EWX WATCHES/WARNINGS/ADVISORIES...
Flash Flood Watch through Sunday evening for the following
counties: Atascosa...Bandera...Bastrop...Bexar...Blanco...Burnet...
Caldwell...Comal...De Witt...Dimmit...Edwards...Fayette...Frio...
Gillespie...Gonzales...Guadalupe...Hays...Karnes...Kendall...Kerr...
Kinney...Lavaca...Lee...Llano...Maverick...Medina...Real...Travis...
Uvalde...Val Verde...Williamson...Wilson...Zavala.

&&

Mesoscale/Aviation...09
Synoptic/Grids...04
Public Service/Data Collection...33

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
408 PM CDT SAT AUG 20 2016

TXZ171>173-183>194-202>209-217>225-228-212115-
LLANO-BURNET-WILLIAMSON-VAL VERDE-EDWARDS-REAL-KERR-BANDERA-
GILLESPIE-KENDALL-BLANCO-HAYS-TRAVIS-BASTROP-LEE-KINNEY-UVALDE-
MEDINA-BEXAR-COMAL-GUADALUPE-CALDWELL-FAYETTE-MAVERICK-ZAVALA-
FRIO-ATASCOSA-WILSON-KARNES-GONZALES-DE WITT-LAVACA-DIMMIT-
408 PM CDT SAT AUG 20 2016

THIS HAZARDOUS WEATHER OUTLOOK IS FOR SOUTH CENTRAL TEXAS.

.DAY ONE...THIS AFTERNOON AND TONIGHT.

SHOWERS AND THUNDERSTORMS WILL BE LIKELY ACROSS SOUTH CENTRAL
TEXAS TODAY AND TONIGHT...MOST NUMEROUS ALONG THE INTERSTATE 35
CORRIDOR AND THE HILL COUNTRY. SOME STORMS COULD PRODUCE LOCALLY
HEAVY RAINFALL WITH TOTALS OF 4 TO 8 INCHES. ISOLATED AMOUNTS UP
TO 15 INCHES ARE POSSIBLE SOMEWHERE ACROSS SOUTH CENTRAL TEXAS
THROUGH SUNDAY. SIGNIFICANT FLASH FLOODING MAY RESULT. A FLASH
FLOOD WATCH IS IN EFFECT FOR ALL OF SOUTH CENTRAL TEXAS.

.DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY.

FLASH FLOODING MAY BE ONGOING ACROSS PORTIONS OF SOUTH CENTRAL
TEXAS SUNDAY MORNING. SEVERAL INCHES OF ADDITIONAL RAIN ARE
POSSIBLE ON SUNDAY AND SUNDAY AFTERNOON. CREEK AND RIVER FLOODING
MAY BE ONGOING AND COULD LAST FOR SEVERAL DAYS DEPENDING ON THE
FINAL RAIN TOTALS. A FLASH FLOOD WATCH IS IN EFFECT THROUGH SUNDAY
AFTERNOON.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS NOT ANTICIPATED. HOWEVER SPOTTERS AND
COCORAHS OBSERVERS ARE ENCOURAGED TO REPORT ANY SIGNIFICANT
RAINFALL AMOUNTS OR FLOODING TO THE NATIONAL WEATHER SERVICE.

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
413 PM CDT SAT AUG 20 2016

TXZ191-192-202200-
TRAVIS TX-HAYS TX-
413 PM CDT SAT AUG 20 2016

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHEASTERN TRAVIS AND EAST
CENTRAL HAYS COUNTIES UNTIL 500 PM CDT...

AT 408 PM CDT...DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM OVER
BUDA...OR NEAR TANGLEWOOD FOREST...MOVING NORTHEAST AT 25 MPH.

WIND GUSTS UP TO 50 MPH WILL BE POSSIBLE WITH THIS STORM.

LOCATIONS IMPACTED INCLUDE...
AUSTIN...AUSTIN BERGSTROM INTERNATIONAL AIRPORT...KYLE...BUDA...
TANGLEWOOD FOREST...ONION CREEK...BARTON CREEK...SUNSET VALLEY...
CREEDMOOR AND MOTORISTS ON INTERSTATE 35.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TORRENTIAL RAINFALL IS ALSO OCCURRING WITH THIS STORM...AND MAY LEAD
TO LOCALIZED FLOODING. DO NOT DRIVE YOUR VEHICLE THROUGH FLOODED
ROADWAYS.

FREQUENT CLOUD TO GROUND LIGHTNING IS OCCURRING WITH THIS STORM.
LIGHTNING CAN STRIKE 10 MILES AWAY FROM A THUNDERSTORM. SEEK A SAFE
SHELTER INSIDE A BUILDING OR VEHICLE.

THIS STORM MAY INTENSIFY...SO BE CERTAIN TO MONITOR LOCAL RADIO
STATIONS AND AVAILABLE TELEVISION STATIONS FOR ADDITIONAL INFORMATION
AND POSSIBLE WARNINGS FROM THE NATIONAL WEATHER SERVICE.

IF ON OR NEAR LADY BIRD LAKE OR THE COLORADO RIVER...GET OUT OF THE
WATER AND MOVE INDOORS OR INSIDE A VEHICLE. REMEMBER...LIGHTNING CAN
STRIKE OUT TO 10 MILES FROM THE PARENT THUNDERSTORM. IF YOU CAN HEAR
THUNDER...YOU ARE CLOSE ENOUGH TO BE STRUCK BY LIGHTNING. MOVE TO
SAFE SHELTER NOW! DO NOT BE CAUGHT ON THE WATER IN A THUNDERSTORM.

&&

LAT...LON 2996 9779 3006 9797 3042 9779 3023 9750
TIME...MOT...LOC 2108Z 217DEG 24KT 3010 9783

PLATT

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
510 PM CDT SAT AUG 20 2016

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0455 PM     FLASH FLOOD      1 SSE HAYS              30.11N  97.87W
08/20/2016                   HAYS               TX   PUBLIC

            PUBLIC REPORT VIA TWITTER OF WATER OVER THE ROAD IN
            LEISUREWOODS NEAR BUDA.

&&

EVENT NUMBER EWX1600622

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
513 PM CDT SAT AUG 20 2016

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0512 PM     FLASH FLOOD      3 ESE SUNSET VALLEY     30.21N  97.77W
08/20/2016                   TRAVIS             TX   CITY OFFICIAL

            MULTIPLE LOW WATER CROSSINGS BEING CLOSED ACROSS TRAVIS
            COUNTY VIA ATXFLOODS.

&&

EVENT NUMBER EWX1600623

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
550 PM CDT SAT AUG 20 2016

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0527 PM     FLASH FLOOD      4 SSW MANOR             30.29N  97.57W
08/20/2016                   TRAVIS             TX   TRAINED SPOTTER

            WATER OVER THE ROADWAY AT THE SH 130 ACCESS ROAD AND
            BLOOR ROAD. REPORTED VIA TWITTER.

&&

EVENT NUMBER EWX1600624

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
552 PM CDT SAT AUG 20 2016

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0544 PM     FLASH FLOOD      JONAH                   30.64N  97.54W
08/20/2016                   WILLIAMSON         TX   AMATEUR RADIO

            HAM REPORTED 1 TO 2 INCHES OF WATER OVER THE ROAD ALONG
            1660 NEAR JONAH.

&&

EVENT NUMBER EWX1600625

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
553 PM CDT SAT AUG 20 2016

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0544 PM     FLASH FLOOD      CEDAR PARK              30.51N  97.83W
08/20/2016                   WILLIAMSON         TX   BROADCAST MEDIA

            VIEWERS REPORTING WATER OVER THE ROADS IN AND AROUND
            CEDAR PARK.

&&

EVENT NUMBER EWX1600626