Severe Thunderstorm Warning 153, NWS Austin/San Antonio, TX

716 
WWUS54 KEWX 260428
SVSEWX

Severe Weather Statement
National Weather Service Austin/San Antonio TX
1128 PM CDT Mon May 25 2020

TXC163-325-463-507-260445-
/O.CON.KEWX.SV.W.0153.000000T0000Z-200526T0445Z/
Medina TX-Uvalde TX-Zavala TX-Frio TX-
1128 PM CDT Mon May 25 2020

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1145 PM CDT
FOR SOUTHWESTERN MEDINA...SOUTHEASTERN UVALDE...NORTHEASTERN ZAVALA
AND NORTHWESTERN FRIO COUNTIES...

At 1127 PM CDT, a severe thunderstorm was located 10 miles south of
Sabinal, or 15 miles east of Uvalde, moving east at 35 mph.

HAZARD...Golf ball size hail.

SOURCE...Public.

IMPACT...People and animals outdoors will be injured. Expect damage 
         to roofs, siding, windows, and vehicles.

Locations impacted include...
Sabinal, Frio Town and D'Hanis. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Prepare immediately for large hail and deadly cloud to ground
lightning. Seek shelter inside a well-built structure. Stay away from
windows.

&&

LAT...LON 2908 9966 2933 9960 2932 9922 2895 9930
TIME...MOT...LOC 0427Z 277DEG 30KT 2918 9952 

HAIL...1.75IN
WIND...<50MPH
 
$$

BF

Area Forecast Discussion...UPDATED
National Weather Service Austin/San Antonio TX
924 PM CDT Mon May 25 2020

.UPDATE...
Severe Thunderstorm Watch #227 is in effect until 4 AM for the Rio
Grande plains, southern Edwards Plateau into the I-35 corridor
including Bexar county. Convection is developing along the Rio Grande
plains and will likely develop into a MCS as we head into the late
evening and overnight hours. Large hail looks to be favored over the
Rio Grande plains and southern Edwards Plateau. Farther east, the
concerns for hail should ease a bit, but we could still see some
damaging winds. In addition, locally heavy rainfall remains a concern
across most of the region tonight.

Please see the 00Z aviation discussion below.

&&

.AVIATION...
Overall, little change has been made from the previous forecast
package. TS chances will initially be along the Rio Grande at DRT
through roughly 06Z this evening. SAT and SSF should see the best TS
chances between 03-08Z. AUS could also see a storm between 05-07Z,
but coverage should be less across this terminal and will only
include a 2 hour TEMPO group for now.

&&

.PREV DISCUSSION... /ISSUED 257 PM CDT Mon May 25 2020/

SHORT TERM (Tonight through Tuesday Night)...
A second strong MCV in as many days has altered the influence of the
upper low that was earlier projected to cut off from the polar
westerlies and bring several days of rain opportunities. The MCV
responsible for the heavy rains Sunday night continues to spin away
over North Central TX and has taken on a more synoptic scale of
influence, including an early cold frontal push all the way into a
HDO to VCT line. While the upstream larger trough remains potent
enough to generate another broad coverage event for storms when the
rest of the front arrives, the likelihood of strong storms over
Central TX and the Austin metro area looks much reduced. The frontal
zone should retract in the evening with winds returning to more
easterly over and south of HWY 90 and broaden the marginal severe
threat for later tonight, and a few strong cells may still cross over
the inversion to around HWY 281 and just to the west of Austin for
mainly a hail threat. Timing has been fairly consistent among most of
the finer res models in terms of seeing the storms materialize over
the Edwards Plateau and possibly Rio Grande Plains, so we should see
the next round of storms ramp up over our CWA by right around 00Z. A
possible caveat is the radar trends of deep layer shower activity
west of CRP, but perhaps this ties in with some of the model
solutions that fire activity over the Rio Grande plains also at
around 00Z. CAPE values will be lower than from last night and only
the Rio Grande and Pecos river basin areas look ripe for the Slight
Risk level of storms while areas east of Hwy 83 look more prone to a
marginal threat. Thus the largest storm concern going into tonight
would be for another round of rain over saturated soils. Expect with
any areas that get 1-2 inches that area rivers and streams could bump
up to minor flood stage. However, the expected round of rains
tonight should be mainly less than 1 inch over the counties that are
most prone to run-off.

By daybreak, the rains should be retreating into East TX, and dry
air wrap-around flow below the broad upper trough should make for a
mostly stable and cool day for late Tuesday. Blended guidance
influences and past forecast influences over areas east of I-35 may
over-advertise the rain chance. Our QPF forecast for late Tuesday
into Tuesday night might tell the story more accurately.

LONG TERM (Wednesday through Monday)...
The center of the upper low is expected to be near the Arklatex
region with northwest flow aloft over our area. This flow should be
mostly subsident with a mostly dry forecast expected on Wednesday.
The blends kept a 20 PoP across the northern CWA and trimmed the
spatial area back a bit. If the drier trend continues for another
model run, these PoPs may be taken completely out of the forecast.
Mostly dry weather is expected to continue into Thursday with highs
in the 80s and 90s expected.

A vort max on the backside of the upper low should arrive to the area
on Thursday/Thursday night with a possible frontal boundary
accompanying it. The GFS is the most bullish with an MCS moving
through the area with the higher intensity in the west, while the
ECMWF keeps the bulk of the thunderstorm activity in Mexico. Will
keep PoPs at 20 percent for now with slightly higher PoPs into the
weekend as south flow returns to the area increasing moisture once
again.

&&

.PRELIMINARY POINT TEMPS/POPS...
Austin Camp Mabry              64  79  63  84  65 /  70  50  20  10  10
Austin Bergstrom Intl Airport  63  78  63  84  64 /  70  50  20  10  10
New Braunfels Muni Airport     63  79  61  87  64 /  80  50  20  10  10
Burnet Muni Airport            61  77  60  82  62 /  60  40  20  20  20
Del Rio Intl Airport           66  87  63  95  68 /  70  20   0  -   -
Georgetown Muni Airport        62  77  61  83  63 /  60  50  20  20  20
Hondo Muni Airport             65  82  61  91  65 /  80  30  -   -   -
San Marcos Muni Airport        63  78  61  87  63 /  80  50  20  10  10
La Grange - Fayette Regional   65  78  63  84  65 /  60  60  30  20  10
San Antonio Intl Airport       64  81  63  89  66 /  80  40  10  10  -
Stinson Muni Airport           65  82  64  89  67 /  80  40  10  -   -

&&

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

Short-Term/Aviation...Platt
Long-Term...05
Decision Support...YBVP

Hazardous Weather Outlook
National Weather Service Austin/San Antonio TX
313 AM CDT Mon May 25 2020

TXZ171>173-183>194-202>209-217>225-228-260815-
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-
313 AM CDT Mon May 25 2020

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

.DAY ONE...Today And Tonight.

One more round of strong to severe thunderstorms are expected
later today through tonight with all severe weather hazards
possible. A small tornado threat will exist over the southern
Edwards Plateau/northern portions of the Rio Grande, and large to
very large hail will be possible there. As the night goes on and
storms move southeast across the area, the threat will transition
to damaging wind gusts.

In addition after heavy rain just fell, localized flooding will
again be of concern with 1-3 inches of rain possible in many
locations, and isolated higher totals near or in excess of 5
inches possible.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday.

No hazardous weather is expected at this time.

.SPOTTER INFORMATION STATEMENT...

Spotter activation will likely be needed tonight.

Special Weather Statement
National Weather Service Austin/San Antonio TX
928 PM CDT Mon May 25 2020

TXZ183-260315-
Val Verde TX-
928 PM CDT Mon May 25 2020

...SIGNIFICANT WEATHER ADVISORY FOR NORTHEASTERN VAL VERDE COUNTY
UNTIL 1015 PM CDT...

At 928 PM CDT, Doppler radar was tracking a strong thunderstorm 9
miles southwest of Juno, moving east at 35 mph.

Nickel size hail and winds in excess of 40 mph will be possible with
this storm.

Locations impacted include...
Juno, Bakers Crossing, and Devils River State Nat Area Del Norte.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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.

&&

A Severe Thunderstorm Watch remains in effect until 400 AM CDT for
south central Texas.

LAT...LON 2996 10131 3014 10133 3022 10083 2996 10079
TIME...MOT...LOC 0228Z 264DEG 29KT 3006 10123

BF

Special Weather Statement
National Weather Service Austin/San Antonio TX
930 PM CDT Mon May 25 2020

TXZ184-202-203-260315-
Uvalde TX-Kinney TX-Edwards TX-
930 PM CDT Mon May 25 2020

...SIGNIFICANT WEATHER ADVISORY FOR NORTHEASTERN KINNEY...
NORTHWESTERN UVALDE AND SOUTH CENTRAL EDWARDS COUNTIES UNTIL 1015 PM
CDT...

At 930 PM CDT, Doppler radar was tracking a strong thunderstorm 11
miles north of Alamo Village, or 18 miles north of Brackettville,
moving east at 30 mph.

Nickel size hail and winds in excess of 40 mph will be possible with
this storm.

Locations impacted include...
Kickapoo Cavern State Park.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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.

&&

A Severe Thunderstorm Watch remains in effect until 400 AM CDT for
south central Texas.

LAT...LON 2976 10006 2947 10002 2948 10052 2966 10054
TIME...MOT...LOC 0230Z 264DEG 28KT 2958 10044

BF

Special Weather Statement
National Weather Service Austin/San Antonio TX
942 PM CDT Mon May 25 2020

TXZ204-205-260330-
Bexar TX-Medina TX-
942 PM CDT Mon May 25 2020

...SIGNIFICANT WEATHER ADVISORY FOR EAST CENTRAL MEDINA AND
SOUTHWESTERN BEXAR COUNTIES UNTIL 1030 PM CDT...

At 941 PM CDT, Doppler radar was tracking a strong thunderstorm near
Castroville, moving east at 35 mph.

Nickel size hail and winds in excess of 40 mph will be possible with
this storm.

Locations impacted include...
San Antonio, Universal City, Live Oak, Selma, Castroville, San
Antonio Int Airport, Stinson Municipal Airport, Leon Valley, Kirby,
Alamo Heights, Windcrest, Terrell Hills, Lytle, Olmos Park, Somerset,
Elmendorf, China Grove, Lacoste, Noonan, and Pearson.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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.

&&

A Severe Thunderstorm Watch remains in effect until 400 AM CDT for
south central Texas.

LAT...LON 2922 9872 2925 9880 2923 9881 2925 9892
      2950 9887 2959 9832 2918 9835 2916 9837
TIME...MOT...LOC 0241Z 271DEG 29KT 2937 9881

BF

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
1026 PM CDT MON MAY 25 2020

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

1128 PM     FLASH FLOOD      2 NW OLMOS PARK         29.50N 98.50W
05/24/2020                   BEXAR              TX   PUBLIC

            REPORT FROM MPING: STREET/ROAD FLOODING;
            STREET/ROAD CLOSED; VEHICLES STRANDED.

&&

Special Weather Statement
National Weather Service Austin/San Antonio TX
1035 PM CDT Mon May 25 2020

TXZ205-207-220-221-223-260415-
Guadalupe TX-Bexar TX-Atascosa TX-Gonzales TX-Wilson TX-
1035 PM CDT Mon May 25 2020

...SIGNIFICANT WEATHER ADVISORY FOR SOUTH CENTRAL GUADALUPE...WESTERN
GONZALES...CENTRAL ATASCOSA...WILSON AND SOUTHEASTERN BEXAR COUNTIES
UNTIL 1115 PM CDT...

At 1035 PM CDT, Doppler radar was tracking strong thunderstorms along
a line extending from near St. Hedwig to 6 miles southwest of
Elmendorf to near Poteet. Movement was east at 35 mph.

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

Locations impacted include...
Pleasanton, Floresville, Jourdanton, Poteet, Poth, Stockdale, St.
Hedwig, Elmendorf, La Vernia, New Berlin, Calaveras Lake, Sutherland
Springs, Leming, Sandy Oaks, Iuka, Canada Verde, Sayers, Graytown,
Coughran and Espey.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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.

&&

A Severe Thunderstorm Watch remains in effect until 400 AM CDT for
south central Texas.

LAT...LON 2945 9773 2912 9793 2881 9854 2904 9878
      2919 9845 2948 9825
TIME...MOT...LOC 0335Z 279DEG 28KT 2940 9825 2919 9838 2907 9860

BF

Special Weather Statement
National Weather Service Austin/San Antonio TX
1038 PM CDT Mon May 25 2020

TXZ203-260430-
Uvalde TX-
1038 PM CDT Mon May 25 2020

...SIGNIFICANT WEATHER ADVISORY FOR CENTRAL UVALDE COUNTY UNTIL 1130
PM CDT...

At 1038 PM CDT, Doppler radar was tracking a strong thunderstorm 7
miles southeast of Laguna, or 12 miles northwest of Uvalde, moving
east at 30 mph.

Penny size hail and winds in excess of 40 mph will be possible with
this storm.

Locations impacted include...
Uvalde, Uvalde Estates, Laguna, Knippa, Concan and Blewett.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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.

&&

A Severe Thunderstorm Watch remains in effect until 400 AM CDT for
south central Texas.

LAT...LON 2917 10005 2944 10007 2958 9954 2914 9950
TIME...MOT...LOC 0338Z 264DEG 28KT 2933 9995

BF