Flash Flood Warning 5, NWS Austin/San Antonio, TX

909 
WGUS74 KEWX 120931
FFSEWX

Flash Flood Statement
National Weather Service Austin/San Antonio TX
431 AM CDT Sun Apr 12 2026

TXC137-465-121145-
/O.CON.KEWX.FF.W.0005.000000T0000Z-260412T1145Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Edwards TX-Val Verde TX-
431 AM CDT Sun Apr 12 2026

...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 645 AM CDT THIS 
MORNING FOR NORTHWESTERN EDWARDS AND NORTHEASTERN VAL VERDE 
COUNTIES...

At 431 AM CDT, Doppler radar indicated thunderstorms produced heavy 
rain across the warned area. Between 2 and 5 inches of rain have 
fallen. Heavy rain has subsided for the time being, but additional 
rainfall amounts up to 1 inch are possible in the warned area. Flash 
flooding is ongoing or expected to begin shortly.

HAZARD...Life threatening flash flooding. Thunderstorms producing
         flash flooding.

SOURCE...Radar.

IMPACT...Life threatening flash flooding of creeks and streams,
         urban areas, highways, streets and underpasses.

Some locations that will experience flash flooding include...
  Loma Alta, Vinegarone and Devils River State Nat Area Del Norte.

This includes the following streams and drainages...
  Buckley Draw, South Llano River, Dolan Creek, Cow Creek, Red Bluff 
  Creek, Jack Creek, Devils River, Dry Devils River, Middle Dolan 
  Creek, West Dolan Creek and Mailtrail Creek.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Turn around, don't drown when encountering flooded roads. Most flood 
deaths occur in vehicles.

Be especially cautious at night when it is harder to recognize the 
dangers of flooding.

Flooding is occurring or is imminent. It is important to know where 
you are relative to streams, rivers, or creeks which can become 
killers in heavy rains. Campers and hikers should avoid streams or 
creeks.

&&

LAT...LON 2985 10114 2999 10103 3029 10073 3029 10072
      3029 10070 3029 10069 3029 10063 3029 10059
      3029 10057 3029 10054 3029 10050 3029 10038
      3029 10026 2992 10070 2981 10083

FLASH FLOOD...RADAR INDICATED
FLASH FLOOD DAMAGE THREAT...CONSIDERABLE

$$

05

400 
WGUS74 KEWX 121146
FFSEWX

Flash Flood Statement
National Weather Service Austin/San Antonio TX
646 AM CDT Sun Apr 12 2026

TXC137-465-121156-
/O.EXP.KEWX.FF.W.0005.000000T0000Z-260412T1145Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Edwards TX-Val Verde TX-
646 AM CDT Sun Apr 12 2026

...FLASH FLOOD WARNING HAS EXPIRED FOR NORTHWESTERN EDWARDS AND 
NORTHEASTERN VAL VERDE COUNTIES...

The heavy rain has ended. Flooding is no longer expected to pose a 
threat. Please continue to heed remaining road closures.

&&

LAT...LON 2985 10114 2999 10103 3029 10073 3029 10072
      3029 10070 3029 10069 3029 10063 3029 10059
      3029 10057 3029 10054 3029 10050 3029 10038
      3029 10026 2992 10070 2981 10083

$$

05

Area Forecast Discussion
National Weather Service Austin/San Antonio TX
142 AM CDT Sun Apr 12 2026

...New SHORT TERM, LONG TERM, AVIATION...

.KEY MESSAGES...

- A line of storms will continue across the across the Hill
  Country towards the I-35 corridor early Sunday morning, with heavy
  downpours and isolated severe weather possible.

- Isolated strong to severe storms with heavy downpours are
  possible this afternoon and evening across South-Central Texas.

- The potential for strong to severe storms and locally heavy
  rainfall continues through the weekend into early next week.

&&

.SHORT TERM...
(Today through Monday)
Issued at 136 AM CDT Sun Apr 12 2026

As of 1 AM CDT Sunday, a line of strong to marginally severe
thunderstorms was moving across the southern Edwards Plateau and
Hill Country. It will continue to advance across the Hill Country
and portions of the I-35 corridor (mainly near the Austin area)
early this morning. The primary concern, given the very moist
airmass in place, is locally heavy downpours with the potential for
isolated instances of flash flooding. A residual isolated damaging
wind threat is also possible and underlies the currently active
Severe Thunderstorm Watches. However, that risk that should
generally decline during the morning as the storms move farther east
and start to lose their definition amid stabilizing air.

The forecast during the day Sunday is more uncertain than usual. The
morning storms are expected to consume some of the instability over
South-Central Texas and introduce slight capping. However, the
storms may leave a surface boundary draped across our area, and the
persistence of a warm and moist airmass will allow instability to
build throughout the day, especially along and west of the I-35
corridor. Isolated to scattered showers may continue through the
morning into the afternoon. If updrafts punch cleanly through the
cap, particularly on the leftover outflow boundary, there could be a
few isolated thunderstorms with accompanying heavy rain. Not all of
the high resolution models depict these stronger storms in the
afternoon, but those that do favor the I-35 corridor and Hill
Country. Given very high moisture levels for this time of year and
favorable atmospheric profiles, even relatively small showers can
still be highly efficient rainmakers. Even with the relatively low
confidence in storm coverage, the presence of a Level 2 of 4
(Slight) risk of excessive rainfall capable of causing flash
flooding underscores the anomalous moisture available to any showers
that develop Sunday. Based on this environment, this is our main
concern with today's storms.

Towards the evening hours and into Sunday night, sufficient heating
over Mexico and a subtle shortwave moving across the Rio Grande may
prompt the development thunderstorms. However, it is unclear whether
these will also extend into the Rio Grande Plains and southern
Edwards Plateau. If they do, the presence of moderately strong wind
shear (30-40 kt bulk shear) and high instability (above 2000 J/kg
CAPE) could support severe storms, with large hail the primary
hazard. This potential is encapsulated in the Level 2 of 5 (Slight)
risk for severe weather highlighted by the SPC for areas generally
along and west of the I-35 corridor. However, much like the activity
earlier on Sunday, the occurrence of this activity is highly
sensitive to preceding developments. Most of the hi-res models show
very sparse storm coverage Sunday evening, while the coarser
synoptic-scale models and machine learning models favor more rain
coverage. We'll likely have a better handle on this activity once
we're able to assess how the current line of storms impacts the
atmospheric environment.

Precipitable water levels ease slightly on Monday, but nonetheless
it will remain moist with PW above the 90th percentile. Stronger
capping is expected to be in place, and should generally limit
shower coverage. Still, a few thunderstorms could develop along the
dry line in West Texas, which could produce isolated severe activity
in the southern Edwards Plateau Monday evening.

&&

.LONG TERM...
(Monday night through Saturday)
Issued at 136 AM CDT Sun Apr 12 2026

The broad upper-level troughing pattern helping to shape our
unsettled weather persists through next week, along with the warm
and moist airmass over Texas. Southwesterly flow aloft will provide
continued chances for showers and thunderstorms most days, typically
in the afternoon and early evening in tandem with daytime heating.
Given the anomalous airmass, strong storms with locally heavy
rainfall will also be possible throughout the week.

Around midweek, a stronger shortwave associated with the broader
pattern swings east into the Central Plains, accompanied by a round
of stronger storms over the Central US. While the trajectory of this
trough will tend to keep the worst weather farther north, some
stronger storms could extend into our area sometime Tuesday or
Wednesday. Southwesterly mid- to upper-level flow continues through
the remainder of the week, though the lack of well-defined
shortwaves during the latter half of the week may limit the
potential for stronger storms and keep showers more isolated
compared to what we've been seeing the past few days.

Overnight temperatures will be relatively stable through the week,
buoyed into the 60s and low 70s by high dew points. Daytime highs
will generally be in the 80s, but could warm some into the low 90s
late next week during slightly calmer stretches with less rain.

&&

.AVIATION...
(06Z TAFS)
Issued at 136 AM CDT Sun Apr 12 2026

MVFR and IFR conditions are forecast for the local area terminals
for a good portion of this forecast cycle. A line of moderate to
heavy showers with scattered thunderstorms extending from the
southern Edwards Plateau to the southwest to the east of Del Rio is
forecast to push eastward through the overnight hours into Sunday
morning. Stronger storms are likely to produce cloud to ground
lightning strikes and reduced visibilities due to heavy rain. The
estimated time for these storms to affect the I-35 Corridor is
around 12Z Sunday. Some models suggest for this activity to begin a
few hours early while others show later timing. Therefore, we are
doing a blend and taking the middle road as far as the potential for
thunderstorms to affect the airports. Model solutions differ from
most of the Sunday afternoon time frame as far as convection. So
with that said, we will monitor closely and make adjustments
accordingly. Southeast winds prevails through the period with speeds
running around 10 to 20 knots with gusts up to 30 knots.

&&

.PRELIMINARY POINT TEMPS/POPS...
Austin Camp Mabry              80  69  85  69 /  70  40  20   0
Austin Bergstrom Intl Airport  79  69  85  68 /  70  40  20   0
New Braunfels Muni Airport     80  69  84  68 /  70  40  30  10
Burnet Muni Airport            78  68  82  67 /  90  40  10  10
Del Rio Intl Airport           85  69  87  70 /  60  30  20  30
Georgetown Muni Airport        79  69  84  67 /  70  40  20   0
Hondo Muni Airport             80  67  84  67 /  80  40  20  10
San Marcos Muni Airport        80  69  85  68 /  70  40  30   0
La Grange - Fayette Regional   80  69  85  69 /  70  40  20   0
San Antonio Intl Airport       80  69  84  69 /  70  40  30  10
Stinson Muni Airport           81  70  86  70 /  70  40  20  10

&&

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

SHORT TERM...Tran
LONG TERM....Tran
AVIATION...17

Special Weather Statement
National Weather Service Austin/San Antonio TX
1046 PM CDT Sat Apr 11 2026

TXZ183-184-120430-
Val Verde TX-Edwards TX-
1046 PM CDT Sat Apr 11 2026

...Strong thunderstorms will impact portions of northwestern Edwards
and northeastern Val Verde Counties through 1130 PM CDT...

At 1046 PM CDT, Doppler radar was tracking strong thunderstorms along
a line extending from 20 miles southwest of Sonora to 24 miles north
of Carta Valley to near Loma Alta. Movement was east at 40 mph.

HAZARD...Wind gusts of 50 to 55 mph.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around
         unsecured objects.

These storms will remain over mainly rural areas of northwestern
Edwards and northeastern Val Verde Counties.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

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.

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

&&

LAT...LON 3029 10006 3005 10015 2996 10082 3013 10077
      3028 10092
TIME...MOT...LOC 0346Z 252DEG 36KT 3030 10079 3015 10070 2999 10076

MAX HAIL SIZE...0.00 IN
MAX WIND GUST...55 MPH

62

Special Weather Statement
National Weather Service Austin/San Antonio TX
1116 PM CDT Sat Apr 11 2026

TXZ183-202-120500-
Kinney TX-Val Verde TX-
1116 PM CDT Sat Apr 11 2026

...A strong thunderstorm will impact portions of northwestern Kinney
and southeastern Val Verde Counties through MIDNIGHT CDT...

At 1116 PM CDT, Doppler radar was tracking a strong thunderstorm near
Cienegas Terrace, or 8 miles west of Del Rio, moving northeast at 45
mph.

HAZARD...Wind gusts of 50 to 55 mph.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around
         unsecured objects.

Locations impacted include...
Del Rio, Lake View, Amistad Village, Black Brush Point, Amanda,
Laughlin AFB, Val Verde Park, Standart, Diablo East, Cienegas
Terrace, Governors Landing, Long Point, 277 South Boat Ramp, 277
North Campground, San Pedro Canyon, Rock Quarry Campground, Escondido
Estates, Lake Ridge Ranch, and Salem Point.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

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

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

&&

LAT...LON 2948 10113 2962 10074 2962 10055 2928 10054
      2925 10081 2926 10081 2926 10084 2928 10087
      2931 10089 2933 10094 2935 10095 2937 10101
      2944 10106 2946 10106
TIME...MOT...LOC 0416Z 242DEG 38KT 2935 10101

MAX HAIL SIZE...0.00 IN
MAX WIND GUST...55 MPH

62

Special Weather Statement
National Weather Service Austin/San Antonio TX
1146 PM CDT Sat Apr 11 2026

TXZ184-185-120530-
Edwards TX-Real TX-
1146 PM CDT Sat Apr 11 2026

...Strong thunderstorms will impact portions of central Edwards and
northwestern Real Counties through 1230 AM CDT...

At 1146 PM CDT, Doppler radar was tracking strong thunderstorms along
a line extending from 10 miles northwest of Rocksprings to 18 miles
west of Vance to 14 miles southeast of Carta Valley. Movement was
east at 45 mph.

HAZARD...Wind gusts up to 50 mph.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around
         unsecured objects.

Locations impacted include...
Rocksprings, Vance, Devil's Sinkhole State Natural Area, and Us-
377 Near The Kimble-Edwards County Line.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

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

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

&&

LAT...LON 3005 9976 2975 9994 2967 10053 2984 10040
      3013 10044 3029 10007 3029 9976
TIME...MOT...LOC 0446Z 248DEG 37KT 3010 10035 2986 10031 2965 10050

MAX HAIL SIZE...0.00 IN
MAX WIND GUST...50 MPH

62

Special Weather Statement
National Weather Service Austin/San Antonio TX
1244 AM CDT Sun Apr 12 2026

TXZ184>186-202-120645-
Kerr TX-Kinney TX-Edwards TX-Real TX-
1244 AM CDT Sun Apr 12 2026

...Strong thunderstorms will impact portions of northwestern Kerr,
northern Kinney, central Edwards and northwestern Real Counties
through 145 AM CDT...

At 1244 AM CDT, Doppler radar was tracking strong thunderstorms along
a line extending from 11 miles southeast of Segovia to 12 miles north
of Alamo Village. Movement was east at 25 mph.

HAZARD...Wind gusts up to 50 mph.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around
         unsecured objects.

Locations impacted include...
Rocksprings, Vance, Barksdale, Alamo Village, Devil's Sinkhole State
Natural Area, and Kickapoo Cavern State Park.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

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

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

&&

LAT...LON 3028 9947 2962 10009 2962 10011 2960 10011
      2943 10027 2942 10070 2956 10070 3029 10000
TIME...MOT...LOC 0544Z 266DEG 20KT 3028 9956 2960 10038

MAX HAIL SIZE...0.00 IN
MAX WIND GUST...50 MPH

MO

Special Weather Statement
National Weather Service Austin/San Antonio TX
118 AM CDT Sun Apr 12 2026

TXZ171-185-186-188-120715-
Gillespie TX-Kerr TX-Llano TX-Real TX-
118 AM CDT Sun Apr 12 2026

...Strong thunderstorms will impact portions of Kerr, Gillespie,
Llano and northeastern Real Counties through 215 AM CDT...

At 118 AM CDT, Doppler radar was tracking strong thunderstorms along
a line extending from Pontotoc to near Cherry Spring to 11 miles
north of Tuff. Movement was east at 35 mph.

HAZARD...Wind gusts up to 50 mph.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around
         unsecured objects.

Locations impacted include...
Kerrville, Fredericksburg, Llano, Gainesville, Ingram, Hunt, Castell,
Field Creek, Kerrville-Schreiner Park, Tivydale, Bluffton, Kerr
Wildlife Management Area, Waltonia, Baby Head, Stolz, Crabapple,
Oxford, Cherry Spring, Lone Grove, and Enchanted Rock State Natural
Area.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

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

A Severe Thunderstorm Watch remains in effect until 400 AM CDT for
south central Texas. A Severe Thunderstorm Watch also remains in
effect until 800 AM CDT for south central Texas.

&&

LAT...LON 3059 9850 2989 9913 2991 9994 3008 9979
      3008 9976 3012 9976 3029 9961 3029 9930
      3050 9930 3050 9896 3092 9896 3092 9845
TIME...MOT...LOC 0618Z 269DEG 28KT 3093 9900 3049 9908 2993 9981

MAX HAIL SIZE...0.00 IN
MAX WIND GUST...50 MPH

MO

Special Weather Statement
National Weather Service Austin/San Antonio TX
157 AM CDT Sun Apr 12 2026

TXZ171-172-188-190-120800-
Blanco TX-Gillespie TX-Llano TX-Burnet TX-
157 AM CDT Sun Apr 12 2026

...Strong thunderstorms will impact portions of northwestern Blanco,
central Gillespie, Llano and Burnet Counties through 300 AM CDT...

At 157 AM CDT, Doppler radar was tracking strong thunderstorms along
a line extending from near Bend to near Buchanan Dam to 7 miles north
of Ingram. Movement was east at 40 mph.

HAZARD...Wind gusts up to 50 mph.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around
         unsecured objects.

Locations impacted include...
Fredericksburg, Burnet, Marble Falls, Kingsland, Llano, Bertram,
Round Mountain, Buchanan Dam, Gainesville, Granite Shoals, Horseshoe
Bay, Meadowlakes, Buchanan Lake Village, Stonewall, Highland Haven,
Inks Lake State Park, Blowout, Tivydale, Watson, and Bluffton.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

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

A Severe Thunderstorm Watch remains in effect until 800 AM CDT for
south central Texas.

&&

LAT...LON 3103 9790 3090 9783 3079 9796 3072 9800
      3034 9827 3016 9924 3068 9870 3092 9872
      3092 9842 3094 9841 3095 9845 3096 9845
      3098 9844 3101 9846 3103 9844
TIME...MOT...LOC 0657Z 254DEG 37KT 3116 9851 3074 9847 3018 9921

MAX HAIL SIZE...0.00 IN
MAX WIND GUST...50 MPH

MO