070
FXUS64 KEWX 131119
AFDEWX

Area Forecast Discussion
National Weather Service Austin/San Antonio TX
619 AM CDT Sun Jul 13 2025

...New AVIATION...

.KEY MESSAGES...

- A dangerous risk with potential of high impact flash flooding is
  forecast for later tonight into Sunday

- Level 3 of 4 risk of excessive rainfall for the rest of tonight
  into Sunday morning for parts of the southern Edwards Plateau and
  Hill Country; a Level 2 of 4 risk along the I-35 corridor and/or
  near the Rio Grande

- Rainfall amounts of 2 to 4 inches with isolated 9 to 12 inches
  possible across the Flood Watch area through Sunday evening

- Rapid river rises are anticipated with this dangerous flash
  flooding event

&&

.SHORT TERM...
(Today through Monday)
Issued at 1254 AM CDT Sun Jul 13 2025

A dangerous risk with the potential of high impact flash flooding
event is unfolding late tonight into Sunday. Various meteorological
features are forecast to come together to create heavy rain rates (2
to 4 inches/hr) leading to flash flooding and rapid river rises. The
complex of storms is likely to slowly push to the southeast from the
San Angelo area as abundant Gulf moisture feeds into the convergence
zone (line of storms). This is a dangerous situation since we
already had a significant heavy rain event last week with soils near
to saturation or at saturation levels. Runoff will take over quickly
making rivers to rise to dangerous levels in addition to flash
flooding across poor drainage and low-lying areas and low water
crossing. Hires models are in good agreement with tonight`s heavy
rainfall event and therefore, our confidence is medium to high as
far as occurrence and locations. With that said, higher rainfall
amounts are expected through the Flood Watch period with 2 to 4
inches and isolated 9 to 12 inches possible.

There is a good chance that the Flood Watch gets extended and
expanded on Sunday with new data suggesting for heavy rain to
continue Sunday evening into Monday morning as a mesoscale
convective vortex lingers around the Hill Country. For now, we are
concentrating for the late tonight into Sunday morning period.

&&

.LONG TERM...
(Monday night through Saturday)
Issued at 1254 AM CDT Sun Jul 13 2025

For the extended forecast period, relatively dry and warm conditions
are expected mid to late week with high temperatures at seasonal
values for most of the work week and reaching the mid to upper 90s
by next weekend.

&&

.AVIATION...
(12Z TAFS)
Issued at 606 AM CDT Sun Jul 13 2025

MVFR cigs are forecast to prevail across the I-35 corridor terminals
through late this morning. Then VFR cigs are expected for the rest
of today and evening. However, storms are expected to move across the
I-35 sites bringing down cigs and vsbys to MVFR levels this afternoon
and evening. A south to southeast flow is forecast to prevail through
the period. MVFR cigs return overnight across all area airports.

&&

.PRELIMINARY POINT TEMPS/POPS...
Austin Camp Mabry              92  74  93  75 /  60  20  20   0
Austin Bergstrom Intl Airport  92  74  92  75 /  50  20  20  10
New Braunfels Muni Airport     93  73  94  74 /  40  20  20  10
Burnet Muni Airport            88  72  90  73 /  70  30  20  10
Del Rio Intl Airport           95  76  95  77 /  30  40  20  20
Georgetown Muni Airport        90  73  92  74 /  60  30  20   0
Hondo Muni Airport             93  73  93  75 /  30  30  20  10
San Marcos Muni Airport        93  73  93  74 /  50  20  20  10
La Grange - Fayette Regional   90  75  92  75 /  50  20  30   0
San Antonio Intl Airport       93  75  93  76 /  30  20  20  10
Stinson Muni Airport           95  75  95  76 /  30  20  20  10

&&

.EWX WATCHES/WARNINGS/ADVISORIES...
Flood Watch through this evening for Bandera-Bexar-Blanco-Burnet-
Comal-Edwards-Gillespie-Hays-Kendall-Kerr-Kinney-Llano-Medina-Real-
Travis-Uvalde-Val Verde-Williamson.

&&

$$

Short-Term...17
Long-Term...17
Aviation...17