River Flood Warning 16, NWS Austin/San Antonio, TX

066 
WGUS84 KEWX 041336
FLSEWX
Flood Statement
National Weather Service Austin/San Antonio TX
836 AM CDT Tue Sep 4 2018

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

  Sabinal At Sabinal Affecting Uvalde 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.weather.gov/ewx.

&&

TXC463-041406-
/O.CAN.KEWX.FL.W.0016.000000T0000Z-180905T0651Z/
/SABT2.N.ER.000000T0000Z.000000T0000Z.000000T0000Z.NO/
836 AM CDT Tue Sep 4 2018

The flood warning is cancelled for
  the Sabinal At Sabinal.
* At  7:30 AM Tuesday the stage was 6.0 feet.
* Flood stage is 12.0 feet.
* Forecast...The river will crest below flood stage at 7.2 feet this evening.
* Impact...At 16.0 feet...Moderate lowland flooding inundates lowest secondary 
  roads and bridges in the flood plain from the headwaters to the Frio River 
  confluence..

&& 

Below are the latest river stages and forecasts:
                    BF  FLD  Observed            Forecast 7AM
Location           STG  STG    STG    Day Time   Wed   Thu   Fri   Sat   Sun
 Sabinal            10   12    6.0   Tue  7 AM   5.9   5.3   5.0   4.8   4.6


&&

LAT...LON 2962 9956 2962 9948 2914 9941 2901 9921
      2894 9925 2910 9949             

$$

Area Forecast Discussion
National Weather Service Austin/San Antonio TX
347 AM CDT Tue Sep 4 2018

.SHORT TERM (Today through Wednesday)...
An MCV is over the Rio Grande Plains with a tropical airmass with
PWs of 2 to 2.4 inches over all of South Central Texas and the Hill
Country. Showers and thunderstorms with pockets of heavy rains have
been redeveloping over the last hour or so as the low level jet has
strengthened. This was well indicated in most models and expect this
trend to continue into this morning. These rains are falling over
areas that have received upwards of 4 to 9 inches of rain since
Sunday evening. Have expanded the Flash Flood Watch into the southern
Hill Country and east to the I-37 corridor, including the San Antonio
Metro area and extended it until 1 PM. Expect an additional 2 to 5
inches of rain with isolated spots up to 7 inches. Renewed or
additional flash flooding is likely along with possibly river and
larger stream flooding. The heavy rain and flood threat will become
more isolated this afternoon. An upper level trough will maintain a
moist airmass with plumes from the Pacific and Gulf of Mexico
continuing the high chances of showers and thunderstorms tonight into
Wednesday. Locally heavy rains are possible and may cause additional
or renewed isolated flooding. Wind gusts to 40 mph are also possible
with the stronger storms. Clouds and rain will keep temperatures
slightly below normal.

&&

.LONG TERM (Wednesday Night through Monday)...
Although some models try to rebuild the Subtropical Ridge back over
our area late week, expect a weakness in the height field or a shear
axis will likely occur. This maintains the plumes of moisture and
results in periods of showers and thunderstorms through next Monday.
The main threats are locally heavy rain possibly causing flooding
and gusty winds. Some models bring a surface boundary into our area.
This would enhance the rain and flood threat. Similar to the short
term, slightly below normal temperatures are expected.

&&

.PRELIMINARY POINT TEMPS/POPS...
Austin Camp Mabry              90  74  92  74  93 /  60  40  50  30  50
Austin Bergstrom Intl Airport  89  73  92  73  93 /  60  40  50  30  40
New Braunfels Muni Airport     88  73  91  73  93 /  80  40  50  30  40
Burnet Muni Airport            87  72  90  72  90 /  60  50  50  40  50
Del Rio Intl Airport           86  74  88  74  89 /  40  50  40  50  50
Georgetown Muni Airport        89  73  92  73  92 /  60  30  40  30  50
Hondo Muni Airport             90  74  91  73  92 /  80  50  50  50  40
San Marcos Muni Airport        89  73  91  72  92 /  70  40  50  30  40
La Grange - Fayette Regional   90  74  92  74  93 /  60  30  50  30  40
San Antonio Intl Airport       89  75  91  75  92 /  80  50  50  40  40
Stinson Muni Airport           90  75  91  75  93 /  80  50  50  40  40

&&

.EWX WATCHES/WARNINGS/ADVISORIES...
Flash Flood Watch until 1 PM CDT this afternoon for Atascosa-
Bandera-Bexar-Dimmit-Frio-Kinney-Maverick-Medina-Real-Uvalde-Zavala.

&&

Mesoscale/Aviation...Treadway
Synoptic/Grids...04

Hazardous Weather Outlook
National Weather Service Austin/San Antonio TX
335 AM CDT Tue Sep 4 2018

TXZ171>173-183>194-202>209-217>225-228-050845-
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-
335 AM CDT Tue Sep 4 2018

This Hazardous Weather Outlook is for South-Central Texas..

.DAY ONE...Today And Tonight.

A Flash Flood Watch is in effect for parts of the Edwards Plateau
and Rio Grande Plains as additional rainfall is expected over
areas that saw 4 to 9 inches of rain since Sunday evening.
Scattered showers and thunderstorms are possible across much of
South Central Texas today. Locally heavy rainfall could lead to
flash flooding and river flooding concerns mainly across areas
west of I-10, including the San Antonio metro area. Wind gusts up
to 40 mph are also possible in the stronger storms.

.DAYS TWO THROUGH SEVEN...Wednesday through Monday.

Isolated to scattered showers and thunderstorms are possible
across much of South Central Texas each day into the weekend.
Isolated pockets of locally heavy rainfall could lead to some
flash flooding and river concerns, especially in areas that have
seen significant rains Sunday evening through Tuesday. Wind gusts
up to 40 mph will also be possible in the stronger storms.

.SPOTTER INFORMATION STATEMENT...

While Spotter activation is not anticipated, any reports of heavy
rainfall or flooding are appreciated.

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
1056 PM CDT MON SEP 3 2018

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

1055 PM     FLASH FLOOD      CASTLE HILLS            29.52N 98.51W
09/03/2018                   BEXAR              TX   LAW ENFORCEMENT

            CARS STRANDED IN HIGH WATER AT LOOP 410 AND
            NW MILITARY DRIVE. DOZENS OF ROAD CLOSURES
            ACROSS SAN ANTONIO DUE TO HIGH WATER.

&&

BMW

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
1127 PM CDT MON SEP 3 2018

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

1120 PM     FLASH FLOOD      1 SSE HILL COUNTRY VILL 29.56N 98.48W
09/03/2018                   BEXAR              TX   AMATEUR RADIO

            HAM RADIO REPORT OF WATER OVER THE ROADWAY
            AT BITTERS RD. AND HWY 281. ESTIMATED ABOUT
            8 INCHES OF RAINFALL.

&&

AAT