Severe Thunderstorm Warning 90, NWS Austin/San Antonio, TX

424 
WWUS54 KEWX 122026
SVSEWX

Severe Weather Statement
National Weather Service Austin/San Antonio TX
326 PM CDT Tue May 12 2020

TXC177-122100-
/O.CON.KEWX.SV.W.0090.000000T0000Z-200512T2100Z/
Gonzales TX-
326 PM CDT Tue May 12 2020

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 400 PM CDT
FOR NORTHEASTERN GONZALES COUNTY...

At 325 PM CDT, a severe thunderstorm was located near Gonzales,
moving northeast at 25 mph.

HAZARD...Quarter size hail.

SOURCE...Radar indicated.

IMPACT...Damage to vehicles is expected.

Locations impacted include...
Gonzales, Palmeto State Park, Little New York and Thompsonville. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Tornado Watch remains in effect until 500 PM CDT for south central
Texas.

For your protection move to an interior room on the lowest floor of a
building.

&&

LAT...LON 2945 9751 2955 9763 2973 9742 2974 9741
      2957 9725
TIME...MOT...LOC 2025Z 229DEG 21KT 2951 9752 

HAIL...1.00IN
WIND...<50MPH
 
$$

KCW

457 
WWUS54 KEWX 122034
SVSEWX

Severe Weather Statement
National Weather Service Austin/San Antonio TX
334 PM CDT Tue May 12 2020

TXC177-122044-
/O.CAN.KEWX.SV.W.0090.000000T0000Z-200512T2100Z/
Gonzales TX-
334 PM CDT Tue May 12 2020

...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN GONZALES COUNTY
IS CANCELLED...
                
The storm which prompted the warning has weakened below severe
limits, and no longer poses an immediate threat to life or property.
Therefore, the warning has been cancelled.  However heavy rain is
still possible with this thunderstorm.

A Tornado Watch remains in effect until 500 PM CDT for south central
Texas.

LAT...LON 2945 9751 2955 9763 2973 9742 2974 9741
      2957 9725
TIME...MOT...LOC 2032Z 229DEG 21KT 2955 9747 

$$

KCW

Area Forecast Discussion
National Weather Service Austin/San Antonio TX
218 PM CDT Tue May 12 2020

.SHORT TERM (Tonight through Wednesday Night)...
MCV that formed from overnight and early morning convection is still
well pronounced and center of the circulation can be seen on visible
satellite spinning just northwest of Llano County, slowly tracking
east. This feature is continuing to fire convection over most of our
eastern counties, especially along and east of the I-35 corridor. A
corridor of strong low level shear has been in place along I-35 and
areas just east throughout the morning and early afternoon. This has
produced numerous brief circulations and supercellular structures as
well as two confirmed tornadoes so far. While there still is a
severe threat in place for hail, wind, and tornadoes; the main threat
is quickly transitioning to flash flooding. Some locations in
central Comal County have picked up 4 to 7 inches of rainfall with a
larger swatch of 2 to 3 inches for Hays, Travis, Caldwell, and
Bastrop Counties with additional heavy rainfall expected over the
next few hours. Seeing some additional development of the eastern
Hill Country right now with daytime destabilization and it's
proximity to the MCV but most of the activity still is along and east
of I-35.

Storms will begin to push eastward late this afternoon as focused
forcing makes it's way across the state. Low to mid level clouds
will make a return tonight under persistent southerly flow at the
surface. If winds can relax enough, we may see some fog development
over the interior Hill Country and surrounding areas given the
surplus of moisture at the surface from today's rainfall.

Wednesday, temps look to climb into the mid to upper 80s for most of
the region and low 90s along the Rio Grande. Attention will then
turn to the Tans Pecos and our far western counties, where strong to
severe storms are expected to develop along the dryline late
afternoon due to another shortwave and track eastward towards our
area. Large hail and damaging winds will be the main threats with
this activity and should be on the downward trend after daytime
heating shuts off shortly after sunset. There is a small chance that
an isolated severe storm or two could make it all the way to the I-
35 corridor, SPC does keep this area in a marginal risk but better
chances for severe weather will remain out west along the Rio Grande
and western Hill Country.

&&

.LONG TERM (Thursday through Tuesday)...
An upper level shortwave trough will move across East Texas and there
will be a chance for showers and thunderstorms over the eastern half
of our CWA during the day Thursday. Friday an upper level trough will
move into West Texas and then continue across Texas over the weekend.
This will bring an extended period of showers and thunderstorms.
Initially thunderstorms will develop along the dryline over West
Texas and then move to the east into our CWA. Rainfall will become
more widespread Friday night and Saturday. In the low levels of the
atmosphere the winds will be from the southeast bringing deep
moisture over the area. PW values will increase to 1.5 to 2.0 inches.
This will make for the possibility of locally heavy rain and flash
flooding. It is still too early to pinpoint where and when heavy rain
will be, but models have been consistent with this activity over the
last few runs. The upper trough will close off and stall along the
Texas coast. This will keep low rain chances in the forecast for the
first part of next week.

&&

.PRELIMINARY POINT TEMPS/POPS...
Austin Camp Mabry              68  83  70  88  71 /  40  20  20  30  10
Austin Bergstrom Intl Airport  68  83  70  88  71 /  40  20  20  30  10
New Braunfels Muni Airport     69  83  70  88  71 /  30  20  20  20  -
Burnet Muni Airport            67  83  67  85  69 /  20  10  20  10  -
Del Rio Intl Airport           71  92  72  93  73 /  10  10  20  -   -
Georgetown Muni Airport        67  83  70  87  71 /  30  10  20  20  -
Hondo Muni Airport             70  88  70  91  71 /  20  20  20  10  -
San Marcos Muni Airport        69  83  69  88  70 /  40  20  20  20  -
La Grange - Fayette Regional   69  83  71  88  71 /  40  20  20  30  10
San Antonio Intl Airport       70  86  70  88  72 /  30  20  20  20  -
Stinson Muni Airport           70  88  71  89  73 /  30  20  10  20  -

&&

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

Short-Term/Aviation...EWilliams
Long-Term...05
Decision Support...Treadway

Hazardous Weather Outlook
National Weather Service Austin/San Antonio TX
507 AM CDT Tue May 12 2020

TXZ171>173-183>194-202>209-217>225-228-131100-
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-
507 AM CDT Tue May 12 2020

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

.DAY ONE...Today And Tonight.

Through this afternoon, there is a potential for strong to severe
storms with locally heavy rainfall over the eastern half of South
Central Texas.

The potential for severe storms will be mainly for hail and
strong gusty winds, and the stronger storms are expected during
the afternoon hours and mainly east of a line from Lake Buchanan
to Hondo to Pearsall. Areas east of a Lake Buchanan to Pearsall
line may also see broad areas of 1 to 2 inch rainfall totals,
with isolated totals up to 4 inches possible.

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

Wednesday evening into the overnight a few strong to severe
storms will be possible across Val Verde, Edwards, and Kinney
Counties. The main threats will be hail and damaging thunderstorm
winds.

Friday night through Saturday, pockets of heavy rainfall will
be possible and potentially lead to flooding. Further details on
timing, locations, and rainfall amounts will become available
later in the week.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not anticipated.

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
130 PM CDT TUE MAY 12 2020

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

1248 PM     FLASH FLOOD      1 NNW ONION CREEK       30.15N 97.80W
05/12/2020                   TRAVIS             TX   PUBLIC

            REPORTS OF WATER OVER THE ROAD WAY VIA
            AUSTIN FEWS CAMERA AT OLD SAN ANTONIO ROAD
            IN SOUTH AUSTIN. OTHER MPING REPORTS AROUND
            AUSTIN OF PONDING ON ROADWAYS.

&&

AAT

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
131 PM CDT TUE MAY 12 2020

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

0912 AM     TORNADO          6 SSE DALE              29.85N 97.52W
05/12/2020                   CALDWELL           TX   EMERGENCY MNGR

            POWER LINES DOWN AND LARGE OAK TREES
            UPROOTED ROUGHLY 1/2 MILE EAST OF THE
            INTERSECTION OF FM 713 AND FM 86. TIME
            ESTIMATED BY RADAR.

&&

EMP

Special Weather Statement
National Weather Service Austin/San Antonio TX
136 PM CDT Tue May 12 2020

TXZ191-207-208-121915-
Guadalupe TX-Caldwell TX-Hays TX-
136 PM CDT Tue May 12 2020

...SIGNIFICANT WEATHER ADVISORY FOR WESTERN CALDWELL...SOUTHEASTERN
HAYS AND NORTHEASTERN GUADALUPE COUNTIES UNTIL 215 PM CDT...

At 136 PM CDT, Doppler radar was tracking a strong thunderstorm near
Schertz, moving northeast at 25 mph.

Winds in excess of 40 mph will be possible with this storm.

Locations impacted include...
San Marcos, Seguin, Lockhart, Martindale, Uhland, Kingsbury,
Niederwald, Staples, Fentress, Zorn, Geronimo, Joliet, San Marcos
Regional Airport, Maxwell, Reedville and Redwood.

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.

&&

A Tornado Watch remains in effect until 500 PM CDT for south central
Texas.

LAT...LON 2981 9755 2964 9794 2974 9802 2976 9800
      2980 9802 2981 9802 3001 9770
TIME...MOT...LOC 1836Z 239DEG 20KT 2961 9822

KCW

Special Weather Statement
National Weather Service Austin/San Antonio TX
210 PM CDT Tue May 12 2020

TXZ208-223-122000-
Caldwell TX-Gonzales TX-
210 PM CDT Tue May 12 2020

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHEASTERN CALDWELL AND
NORTHEASTERN GONZALES COUNTIES UNTIL 300 PM CDT...

At 210 PM CDT, Doppler radar was tracking a strong thunderstorm over
Palmeto State Park, or 7 miles northwest of Gonzales, moving
northeast at 20 mph.

Half inch hail will be possible with this storm.

Locations impacted include...
Gonzales, Luling, Waelder, Palmeto State Park, Delhi, Oak Forest,
Thompsonville and Ottine.

A Tornado Watch remains in effect until 500 PM CDT for south central
Texas.

LAT...LON 2945 9755 2959 9768 2986 9740 2977 9730
      2968 9718
TIME...MOT...LOC 1910Z 228DEG 18KT 2957 9756

KCW

Special Weather Statement
National Weather Service Austin/San Antonio TX
236 PM CDT Tue May 12 2020

TXZ223-122015-
Gonzales TX-
236 PM CDT Tue May 12 2020

...SIGNIFICANT WEATHER ADVISORY FOR CENTRAL GONZALES COUNTY UNTIL 315
PM CDT...

At 236 PM CDT, Doppler radar was tracking a strong thunderstorm 9
miles south of Palmeto State Park, or 10 miles west of Gonzales,
moving east at 20 mph.

Half inch hail will be possible with this storm.

Locations impacted include...
Gonzales, Palmeto State Park, Oak Forest, Ottine, Belmont, Bebe,
Cost, Monthalia and Wrightsboro.

A Tornado Watch remains in effect until 500 PM CDT for south central
Texas.

LAT...LON 2934 9765 2951 9773 2969 9744 2947 9726
TIME...MOT...LOC 1936Z 249DEG 16KT 2946 9761

KCW

Special Weather Statement
National Weather Service Austin/San Antonio TX
257 PM CDT Tue May 12 2020

TXZ207-223-122030-
Guadalupe TX-Gonzales TX-
257 PM CDT Tue May 12 2020

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHEASTERN GUADALUPE AND
NORTHWESTERN GONZALES COUNTIES UNTIL 330 PM CDT...

At 256 PM CDT, Doppler radar was tracking a strong thunderstorm near
Seguin, moving northeast at 20 mph.

Half inch hail will be possible with this storm.

Locations impacted include...
Seguin, McQueeney, Kingsbury, Belmont and Zipp.

A Tornado Watch remains in effect until 500 PM CDT for south central
Texas.

LAT...LON 2942 9797 2955 9806 2972 9776 2953 9760
TIME...MOT...LOC 1956Z 239DEG 17KT 2952 9797

KCW