Severe Thunderstorm Warning 96, NWS Austin/San Antonio, TX

157 
WWUS54 KEWX 270401
SVSEWX

Severe Weather Statement
National Weather Service Austin/San Antonio TX
1001 PM CST WED DEC 26 2018

TXC491-270500-
/O.CON.KEWX.SV.W.0096.000000T0000Z-181227T0500Z/
Williamson TX-
1001 PM CST WED DEC 26 2018

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1100 PM CST
FOR NORTH CENTRAL WILLIAMSON COUNTY...

At 1001 PM CST, a severe thunderstorm was located near Jarrell, or
near Serenada, moving east at 25 mph.

HAZARD...60 mph wind gusts. 

SOURCE...Radar indicated. 

IMPACT...Expect damage to roofs, siding, and trees. 

Locations impacted include...
Georgetown, Granger, Serenada, Bartlett, Jarrell, Sun City, Theon,
Walburg and Schwertner.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Remain alert for a possible tornado! Tornadoes can develop quickly
from severe thunderstorms. If you spot a tornado go at once into the
basement or small central room in a sturdy structure.

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

&&

A Tornado Watch remains in effect until midnight CST for south
central Texas.

LAT...LON 3088 9767 3087 9762 3079 9741 3071 9742
      3070 9780 3087 9772 3088 9768
TIME...MOT...LOC 0401Z 280DEG 22KT 3075 9763 

TORNADO...POSSIBLE
HAIL...<.75IN
WIND...60MPH
 
$$

MO

999 
WWUS54 KEWX 270408
SVSEWX

Severe Weather Statement
National Weather Service Austin/San Antonio TX
1008 PM CST WED DEC 26 2018

TXC491-270500-
/O.CON.KEWX.SV.W.0096.000000T0000Z-181227T0500Z/
Williamson TX-
1008 PM CST WED DEC 26 2018

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1100 PM CST
FOR NORTH CENTRAL WILLIAMSON COUNTY...

At 1007 PM CST, a severe thunderstorm was located near Jarrell, or
near Granger, moving east at 35 mph.

HAZARD...60 mph wind gusts and penny size hail. 

SOURCE...Radar indicated. 

IMPACT...Expect damage to roofs, siding, and trees. 

Locations impacted include...
Georgetown, Granger, Serenada, Bartlett, Jarrell, Sun City, Theon,
Walburg and Schwertner.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Remain alert for a possible tornado! Tornadoes can develop quickly
from severe thunderstorms. If you spot a tornado go at once into the
basement or small central room in a sturdy structure.

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

&&

A Tornado Watch remains in effect until midnight CST for south
central Texas.

LAT...LON 3088 9767 3087 9762 3079 9741 3071 9742
      3070 9780 3087 9772 3088 9768
TIME...MOT...LOC 0407Z 268DEG 31KT 3077 9753 

TORNADO...POSSIBLE
HAIL...0.75IN
WIND...60MPH
 
$$

MO

052 
WWUS54 KEWX 270414
SVSEWX

Severe Weather Statement
National Weather Service Austin/San Antonio TX
1014 PM CST WED DEC 26 2018

TXC491-270500-
/O.CON.KEWX.SV.W.0096.000000T0000Z-181227T0500Z/
Williamson TX-
1014 PM CST WED DEC 26 2018

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1100 PM CST
FOR NORTH CENTRAL WILLIAMSON COUNTY...

At 1014 PM CST, a severe thunderstorm was located near Granger,
moving east at 35 mph.

HAZARD...60 mph wind gusts and penny size hail. 

SOURCE...Radar indicated. 

IMPACT...Expect damage to roofs, siding, and trees. 

Locations impacted include...
Georgetown, Granger, Serenada, Bartlett, Jarrell, Sun City, Theon,
Walburg and Schwertner.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Remain alert for a possible tornado! Tornadoes can develop quickly
from severe thunderstorms. If you spot a tornado go at once into the
basement or small central room in a sturdy structure.

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

Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.

&&

A Tornado Watch remains in effect until midnight CST for south
central Texas.

LAT...LON 3088 9767 3087 9762 3079 9741 3071 9742
      3070 9780 3087 9772 3088 9768
TIME...MOT...LOC 0414Z 274DEG 29KT 3075 9749 

TORNADO...POSSIBLE
HAIL...0.75IN
WIND...60MPH
 
$$

MO

734 
WWUS54 KEWX 270426
SVSEWX

Severe Weather Statement
National Weather Service Austin/San Antonio TX
1026 PM CST WED DEC 26 2018

TXC491-270435-
/O.CAN.KEWX.SV.W.0096.000000T0000Z-181227T0500Z/
Williamson TX-
1026 PM CST WED DEC 26 2018

...THE SEVERE THUNDERSTORM WARNING FOR NORTH CENTRAL WILLIAMSON
COUNTY IS CANCELLED...
        
The storm which prompted the warning has moved out of the area.
Therefore, the warning has been cancelled.  However gusty winds and
heavy rain are still possible with this thunderstorm.

A Tornado Watch remains in effect until midnight CST for south
central Texas.

LAT...LON 3088 9767 3087 9762 3079 9741 3071 9742
      3070 9780 3087 9772 3088 9768
TIME...MOT...LOC 0424Z 279DEG 34KT 3073 9736 

$$

MO

Area Forecast Discussion
National Weather Service Austin/San Antonio TX
553 PM CST Wed Dec 26 2018

.UPDATE...
Ran a quick update to the zones to include the new Tornado Watch that
encompasses much of the CWA. Line of convection continues to
strengthen over Edwards County and is now building to the southwest.
Damaging winds will be the main threat, but the environment will
support tornado chances with strong low-level winds in place across
the region. Current timing has the line to the I35 corridor around
10-11 PM then eastern counties through 2-3 AM.

&&

.PREV DISCUSSION... /ISSUED 553 PM CST Wed Dec 26 2018/

AVIATION.../00Z TAFS/
A squall line over the Edwards Plateau is expected to expand Swd by
the rapid refresh models so will maintain a couple hours of tempo
Thunder for DRT although there is an equal chance the the convection
misses the vcnty. As a new Tornado watch has just been issued, a few
of these cells could create a equal threats for isolated hail, wind
and tornadoes. Will keep with a more typical wind gusts potential to
around 30 knots and escalate if bowing segments look more imminent
for the I-35 sites. Wind shifts from the squall should develop
between 04Z and 05Z over all 3 I-35 locations. Improvements should
happen by 10Z with a steady W/NW wind to follow.

PREV DISCUSSION... /ISSUED 343 PM CST Wed Dec 26 2018/

SHORT TERM (Tonight through Thursday Night)...
Strong to severe thunderstorms are expected the rest of this
afternoon and evening across parts of the Edwards Plateau and Hill
Country ahead of a Pacific front. A newly issued Tornado Watch is in
effect for Llano, Burnet and Williamson Counties until 10 PM this
evening as storms continue to develop and low level jet increases.
Expect all severe weather hazards with primary threats of isolated
tornadoes and thunderstorm wind gusts up to 70 mph with stronger
storms. Isolated large hail of one inch in diameter possible.

As the afternoon progresses, the Pacific front will continue to push
eastward into the Rio Grande Plains and southern Edwards Plateau.
The boundary will interact with the warm sector and increased
moisture while upper level support and instability become favorable
for all severe weather hazards. Storms are expected to be discrete in
nature at first but rapidly growing into a line of thunderstorms
late this afternoon into the evening. Large hail of one inch in
diameter and damaging winds are possible across these areas. The time
frame for this to occur is a bit earlier than anticipated based on
current radar trends, which is now to about 9 PM. Then the line gets
better organized as approaching the I-35 corridor and looks like the
line will slow down a bit. With that said, the timing for the line
of strong to severe thunderstorms to affect the I-35 corridor stays
intact as previous mentioned 10 PM through midnight tonight.

By the time this is happening, the main severe threats are expected
to be isolated tornadoes and damaging winds as MLCAPE values
increase to 2000-2500 J/Kg and surface to 6Km shear of 60 knots.

The line of storms will continue to advance to the east and into the
eastern counties of south central Texas overnight. The threat for
isolated tornadoes and damaging winds will eventually diminish and
come to an end from west to east as westerly winds and cooler airmass
spreads across the area.

Last but not least, the line of storms bring a potential for minor
flooding across the affected areas. Storm totals of 1 to 3 inches
are possible mainly across the Hill Country and areas along and east
of I-35.

Quick summary of the above information:

1) There is a Tornado Watch in effect for Llano, Burnet and
Williamson Counties through 10 PM this evening. All severe weather
threats possible.

2)A Pacific front over the northwest part of the area will continue
to push to the east. This system will become the next severe weather
threat across the Rio Grande/Southern Edwards Plateau. All severe
hazards possible.

3) The Pacific front will become the main focus for
organized super cellular storms with the potential for isolated
tornadoes and damaging winds as it moves across the I-35 corridor
between 10 PM and midnight tonight.

4) Minor flooding possible as storm totals could reach 1 to 3 inches
of rain accumulations over already saturated soils.

Once the line of storms move east of the area early Thursday, expect
a cooler day with highs in the mid 60s to lower 70s and mostly sunny
skies.

LONG TERM (Friday through Wednesday)...
Dry Thursday and Friday with rain chances returning on Saturday and
Sunday as another upper level system approaches the area from the
west. Cooler and cloudy for the upcoming weekend with highs only in
the 40s. Things dry out early next week with highs in the 50s and
lows in the 30s and 40s.

&&

.PRELIMINARY POINT TEMPS/POPS...
Austin Camp Mabry              55  69  42  59  40 /  90  10   0   0  10
Austin Bergstrom Intl Airport  55  69  40  59  40 /  90  10   0   0  10
New Braunfels Muni Airport     55  70  41  61  41 /  90  10   0   0  20
Burnet Muni Airport            48  65  38  55  35 /  90  -    0   0  10
Del Rio Intl Airport           46  69  41  67  43 /  40   0   0   0  20
Georgetown Muni Airport        52  67  38  56  37 /  90  -    0   0  10
Hondo Muni Airport             48  71  40  65  42 /  80   0   0   0  20
San Marcos Muni Airport        55  70  41  60  40 /  90  10   0   0  10
La Grange - Fayette Regional   58  71  43  61  43 /  90  10   0  -   20
San Antonio Intl Airport       54  70  43  62  42 /  80  -    0   0  20
Stinson Muni Airport           55  70  44  64  44 /  80  -    0   0  20

&&

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

Aviation...Oaks
Short-Term/Long-Term...Hampshire

Hazardous Weather Outlook...UPDATED
National Weather Service Austin/San Antonio TX
217 PM CST Wed Dec 26 2018

TXZ171>173-183>194-202>209-217>225-228-272030-
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-
217 PM CST Wed Dec 26 2018

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

.DAY ONE...This Afternoon And Tonight.

Numerous to widespread showers and thunderstorms are expected this
afternoon and tonight. Some thunderstorms may be strong to severe
and will be capable of producing damaging straight line winds,
large hail, and isolated tornadoes.

A Tornado Watch is currently in effect this afternoon through
10 PM CST for Llano, Burnet and Williamson counties. The threat
for severe weather is expected to expand beyond these counties
later this evening through portions of the overnight.

Brief heavy rainfall is also possible which could lead to some
minor flooding of low water crossings and could cause some minor
rises on area creeks and rivers. The best chance for moderate to
heavy rainfall is along and east of Interstate 35 and north of
Interstate 10.

.DAYS TWO THROUGH SEVEN...Thursday through Tuesday.

No hazardous weather is expected at this time.

.SPOTTER INFORMATION STATEMENT...

Please report any severe weather you observe tonight via phone or
social media.

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
907 PM CST WED DEC 26 2018

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

0845 PM     HAIL             9 NE ENCHANTED ROCK STA 30.59N 98.70W
12/26/2018  E0.25 INCH       LLANO              TX   COCORAHS

            PEA SIZED HAIL REPORTED SOUTH OF LLANO.
            COCORAHS OBSERVER REPORTED THAT THE SMALL
            HAIL LASTED ABOUT 15 MINUTES.

&&

AAT

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
913 PM CST WED DEC 26 2018

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

0830 PM     HAIL             12 E BRACKETTVILLE      29.34N 100.22W
12/26/2018  E2.00 INCH       KINNEY             TX   PUBLIC

            PICTURE OF 2 INCH HAIL FOUND ON FACEBOOK.
            REPORT LOCATION IS ESTIMATED BUT CAME FROM A
            RANCH NEAR THE KDFX RADAR.

&&

AAT

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
922 PM CST WED DEC 26 2018

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

0831 PM     HAIL             CAMP WOOD               29.67N 100.01W
12/26/2018  E1.75 INCH       REAL               TX   PUBLIC

            MORE PICTURES OF QUARTER TO GOLF BALL SIZED
            HAIL FOUND ON TWITTER. TIME ESTIMATED VIA
            RADAR.

&&

AAT

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
929 PM CST WED DEC 26 2018

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

0910 PM     HAIL             BURNET                  30.75N 98.23W
12/26/2018  E0.25 INCH       BURNET             TX   PUBLIC

            PEA SIZED HAIL REPORTED IN BURNET VIA
            TWITTER.

&&

AAT

Special Weather Statement
National Weather Service Austin/San Antonio TX
932 PM CST WED DEC 26 2018

TXZ171>173-188-190>192-270430-
Blanco TX-Gillespie TX-Williamson TX-Llano TX-Hays TX-Burnet TX-
Travis TX-
932 PM CST WED DEC 26 2018

...SIGNIFICANT WEATHER ADVISORY FOR WESTERN WILLIAMSON...NORTHWESTERN
HAYS...NORTHWESTERN TRAVIS...BLANCO...EASTERN GILLESPIE...EASTERN
LLANO AND BURNET COUNTIES UNTIL 1030 PM CST...

At 932 PM CST, Doppler radar was tracking strong thunderstorms along
a line extending from 8 miles northeast of Briggs to near Luckenbach.
Movement was east at 25 mph.

Winds in excess of 40 mph and small hail will be possible with these
storms.

Locations impacted include...
Austin, Round Rock, Cedar Park, Georgetown, Fredericksburg, Burnet,
Marble Falls, Kingsland, Dripping Springs, Bertram, Round Mountain,
Serenada, Anderson Mill, Buchanan Dam, Leander, Gainesville, Lakeway,
Lago Vista, Bee Cave and Granite Shoals.

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.

&&

A Tornado Watch remains in effect until 1000 PM CST for south central
Texas. A Tornado Watch also remains in effect until 200 AM CST for
south central Texas.

LAT...LON 3091 9783 3087 9763 3079 9743 3016 9809
      3014 9911 3103 9833 3103 9791
TIME...MOT...LOC 0332Z 271DEG 23KT 3097 9783 3016 9870

MO

Special Weather Statement
National Weather Service Austin/San Antonio TX
945 PM CST WED DEC 26 2018

TXZ185>191-203>206-270445-
Comal TX-Bexar TX-Uvalde TX-Blanco TX-Gillespie TX-Kerr TX-Medina TX-
Hays TX-Real TX-Bandera TX-Kendall TX-
945 PM CST WED DEC 26 2018

...SIGNIFICANT WEATHER ADVISORY FOR CENTRAL MEDINA...BANDERA...WEST
CENTRAL HAYS...SOUTHEASTERN KERR...EASTERN UVALDE...SOUTHWESTERN
BLANCO...SOUTHEASTERN GILLESPIE...KENDALL...NORTHWESTERN BEXAR...
SOUTHEASTERN REAL AND CENTRAL COMAL COUNTIES UNTIL 1045 PM CST...

At 945 PM CST, Doppler radar was tracking strong thunderstorms along
a line extending from near Sisterdale to near Sabinal. Movement was
east at 35 mph.

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

Locations impacted include...
San Antonio, Medina, Kerrville, Uvalde, Boerne, Hondo, Castroville,
Wimberley, Comfort, Blanco, Bandera, Tarpley, Vanderpool, Canyon Lake
Dam, Canyon Lake, Leon Valley, Helotes, Fair Oaks Ranch, Bulverde and
Shavano Park.

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.

These storms 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.

&&

A Tornado Watch remains in effect until 200 AM CST for south central
Texas.

LAT...LON 3014 9787 2934 9877 2921 9992 2983 9959
      3015 9910 3016 9790
TIME...MOT...LOC 0345Z 260DEG 31KT 3002 9866 2941 9947

MO