Special Weather Statement, NWS Austin/San Antonio, TX

Area Forecast Discussion
National Weather Service Austin/San Antonio TX
238 PM CDT Sun Jun 4 2017

.SHORT TERM (Tonight through Monday Night)...
The ITCZ-like atmosphere continues across TX/LA today with scattered
showers and thunderstorms, some with intense downpours and gusty
winds, and outflow boundaries and differential heating providing the
lift for new convection. While overall PoPs are moderate for any
given location, driving 100 miles around the area would likely cause
drivers to turn on the wipers at least once. More important is
drivers Turn Around and Don't Drown if approaching any location
where water is rushing across the road. The storms should wane this
evening with the loss of diurnal heating, but like last night, the
Low Level Jet might support isolated storms around throughout the
night.

&&

.LONG TERM (Tuesday through Sunday)...
The longwave trough that has locked-in a seasonally-cool and wet
period the last few days will begin to move east and get absorbed in
a large trough centered over the Great Lakes. This will result in reduced
chances for rain areawide on Monday, and rain chances only for the
coastal plains east of I-35 on Tuesday. Weak subtropical ridging will
bring a return to dry weather and seasonal temperatures from
Wednesday onward, but the longer ranges of the GFS and ECMWF
indicate the ridge will not become established over the Desert
Southwest as it usually does this time of year.

In fact, a high amplitude trough-ridge-trough pattern will progress
across the northern two-thirds of the U.S. during the week of June
11th -- with a roller coaster of conditions at many locations. South
Central Texas is on the southern periphery of this pattern, so the
sensible weather for us should be near normal temperatures with only
isolated afternoon showers and thunderstorms each day.

&&

.PRELIMINARY POINT TEMPS/POPS...
Austin Camp Mabry              70  88  70  89  69 /  40  60  20  10  10
Austin Bergstrom Intl Airport  69  87  70  88  68 /  40  60  20  10  10
New Braunfels Muni Airport     69  88  69  88  68 /  40  60  20  10  10
Burnet Muni Airport            67  85  68  87  67 /  40  50  10  10  10
Del Rio Intl Airport           71  94  71  92  72 /  20  -   10  -   10
Georgetown Muni Airport        68  86  69  88  67 /  50  60  20  10  10
Hondo Muni Airport             69  91  69  90  68 /  40  40  10  10  10
San Marcos Muni Airport        69  88  69  89  68 /  40  60  20  10  10
La Grange - Fayette Regional   70  87  70  88  70 /  50  60  30  20  10
San Antonio Intl Airport       71  89  71  90  70 /  50  50  20  10  10
Stinson Muni Airport           71  90  71  90  70 /  40  50  20  10  10

&&

.EWX WATCHES/WARNINGS/ADVISORIES...
None.
&&

Mesoscale/Aviation...24
Synoptic/Grids...26
Public Service/Data Collection...Treadway

Hazardous Weather Outlook
National Weather Service Austin/San Antonio TX
223 PM CDT Sun Jun 4 2017

TXZ171>173-183>194-202>209-217>225-228-051930-
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-
223 PM CDT Sun Jun 4 2017

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

.DAY ONE...This Afternoon And Tonight.

Chances of showers and thunderstorms continue today and tonight.
Locally heavy rain causing minor flooding is possible along with
isolated strong storms producing damaging wind gusts and large
hail.

.DAYS TWO THROUGH SEVEN...Monday through Saturday.

Chances of showers and thunderstorms continue Monday and Tuesday.
Isolated strong storms with hail and gusty winds as well as
locally heavy rain causing minor flooding are possible.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not anticipated at this time.

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PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
405 PM CDT SUN JUN 4 2017

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

0348 PM     HAIL             BEE CAVE                30.31N 97.96W
06/04/2017  E0.25 INCH       TRAVIS             TX   TRAINED SPOTTER

            PEA SIZE HAIL WITH WIND GUSTS ESTIMATED IN
            EXCESS OF 50 MPH.

&&

SBS

Special Weather Statement
National Weather Service Austin/San Antonio TX
413 PM CDT SUN JUN 4 2017

TXZ173-191>193-207-208-042200-
Guadalupe TX-Caldwell TX-Williamson TX-Bastrop TX-Hays TX-Travis TX-
413 PM CDT SUN JUN 4 2017

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHEASTERN WILLIAMSON...
CALDWELL...SOUTHEASTERN HAYS...NORTH CENTRAL GUADALUPE...EASTERN
TRAVIS AND WESTERN BASTROP COUNTIES UNTIL 500 PM CDT...

At 412 PM CDT, Doppler radar was tracking strong thunderstorms along
a line extending from near Austin to near Mustang Ridge to near
Martindale. Movement was east at 30 mph.

Dime size hail and wind gusts up to 50 mph will be possible with
these storms.

Locations impacted include...
Austin, Round Rock, San Marcos, Cedar Park, Pflugerville, Kyle,
Taylor, Lockhart, Buda, Elgin, Bastrop, Tanglewood Forest, Austin
Bergstrom Int Ap, Windemere, Anderson Mill, Hutto, Manor, West Lake
Hills, Rollingwood and Martindale.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Torrential rainfall is also occurring with these storms, and may lead
to localized flooding. Do not drive your vehicle through flooded
roadways.

Frequent cloud to ground lightning is occurring with these storms.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.

&&

LAT...LON 3042 9727 3040 9733 3037 9727 3009 9728
      2977 9748 2975 9799 3052 9778 3056 9726
TIME...MOT...LOC 2112Z 271DEG 31KT 3036 9770 3010 9772 2985 9789

ALLEN

Special Weather Statement
National Weather Service Austin/San Antonio TX
508 PM CDT SUN JUN 4 2017

TXZ172-173-192-042315-
Williamson TX-Burnet TX-Travis TX-
508 PM CDT SUN JUN 4 2017

...SIGNIFICANT WEATHER ADVISORY FOR WILLIAMSON...NORTH CENTRAL TRAVIS
AND EAST CENTRAL BURNET COUNTIES UNTIL 615 PM CDT...

At 508 PM CDT, Doppler radar was tracking a strong thunderstorm near
Bertram, moving east at 30 mph.

Nickel size hail and wind gusts up to 50 mph will be possible with
this storm.

Locations impacted include...
Austin, Round Rock, Cedar Park, Georgetown, Granger, Bertram,
Anderson Mill, Serenada, Windemere, Leander, Hutto, Lago Vista,
Florence, Jarrell, Liberty Hill, Weir, Georgetown Dam, Granger Dam,
Andice and Briggs.

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.

&&

LAT...LON 3076 9733 3073 9727 3036 9781 3068 9820
      3092 9788
TIME...MOT...LOC 2208Z 288DEG 24KT 3073 9800

MSL

Special Weather Statement
National Weather Service Austin/San Antonio TX
519 PM CDT SUN JUN 4 2017

TXZ223-042300-
Gonzales TX-
519 PM CDT SUN JUN 4 2017

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHWESTERN GONZALES COUNTY
UNTIL 600 PM CDT...

At 519 PM CDT, Doppler radar was tracking a strong thunderstorm over
Smiley, or 17 miles east of Stockdale, moving east at 20 mph.

Nickel size hail and wind gusts up to 50 mph will be possible with
this storm.

Locations impacted include...
Smiley, Cheapside and Sample.

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.

&&

LAT...LON 2913 9759 2915 9766 2924 9775 2935 9773
      2934 9730
TIME...MOT...LOC 2219Z 276DEG 17KT 2926 9767

ALLEN