372
FXUS64 KEWX 111058
AFDEWX

Area Forecast Discussion
National Weather Service Austin/San Antonio TX
558 AM CDT Tue Aug 11 2026

...New AVIATION...

.KEY MESSAGES...
Updated at 548 AM CDT Tue Aug 11 2026

- Hot and mostly dry summer weather continues this week. Practice
  heat safety and stay cool and hydrated.

- Low chance for isolated afternoon showers over the Coastal
  Plains and I-35 corridor this afternoon and evening.

&&

.SHORT TERM...
(Today through Wednesday)
Issued at 1200 AM CDT Tue Aug 11 2026

We continue to remain hot and mainly dry over most of our area. We
should see today play out in a similar fashion as Monday however
rain chances should be even less for most. The main difference being
that high temperatures will be a few degrees warmer with most
reaching the triple digits with the exception being parts of the
Hill Country. Dewpoints are also expected to drop throughout the day
as decent mixing takes hold thus likely alleviating any heat
advisory concerns with "feels like" temps coming just shy of
advisory criteria. Areas across the coastal Plains may briefly
eclipse advisory criteria before showers and a few rumbles make
there way across the area. It will still be quite hot pretty much
everywhere so continue to practice safe heat safety and have
reliable access to cooling and hydration.

Another hot, dry and sunny day can be expected across South Central
Texas for Wednesday with highs in the upper 90s to low 100s. Heat
indices in the low 100s up to around 110 degrees could be possible
in the Coastal Plains and perhaps up into parts of the I-35 Corridor
where a heat advisory may need to be considered. Otherwise expect
very little relief each evening as lows continue to remain in the
upper 70s.

&&

.LONG TERM...
(Wednesday night through Monday)
Issued at 1200 AM CDT Tue Aug 11 2026

The upper ridge eventually will try to establish itself over the
Gulf leading to southerly to at times southwesterly flow aloft
which should help to mitigate "feels like" temperatures somewhat.
That isn`t to say that our actual air temperatures wont be hot,
they will, with most expected to see highs in the 99-103 degree
range. However the humidity due to the air coming off of Mexico
and West TX will likely be drier. Highs will continue to remain in
the upper 90s to near 103 degree range for many areas each day
during this period. These higher temperatures combined with
slightly higher humidity as a plume of tropical moisture looks to
move over the area by Friday at the earliest should result in
"feels like" temperatures eclipsing 108 degrees for many. This
would likely be for areas mainly east of I-37/I-35. The hot and
mainly dry weather looks to stick around heading into this weekend
and additional heat advisories may be needed. Humidity values
should be a touch lower by the second half of the weekend.
Additionally, high temps mainly in the upper 90s to near 100
should be expected as the ridge refocuses from the Gulf to the
lower Mississippi Valley so we should stay just shy of heat
advisory criteria during this stretch. However it will still
continue to be quite hot across the area so continue to check back
for updates and remember to practice safe heat safety.

&&

.AVIATION...
(12Z TAFS)
Issued at 548 AM CDT Tue Aug 11 2026

MVFR CIGs should last through around 14-15Z over the I-35 sites
this morning. Over the most recent model runs, winds are trening
upwards to where some gusts to 30 Knots might need consideration
in the afternoon and early evening. This may come with the
assistance of some thunderstorms which we`ll continue to assume
will remain just east of the I-35 VCNTYs. The added evening wind
gives more confidence that MVFR CIGs return by 09-10Z along I-35
and lasting through around 15Z. No low CIGs were considered for
DRT.

&&

.PRELIMINARY POINT TEMPS/POPS...
Austin Camp Mabry             100  77 100  77 /   0   0   0   0
Austin Bergstrom Intl Airport 100  77 101  77 /   0   0   0   0
New Braunfels Muni Airport    100  76 101  76 /   0   0   0   0
Burnet Muni Airport            97  75  98  74 /   0   0   0   0
Del Rio Intl Airport          100  78 102  77 /   0   0   0   0
Georgetown Muni Airport        99  76  99  76 /   0   0   0   0
Hondo Muni Airport             99  75  99  75 /   0   0   0   0
San Marcos Muni Airport       100  76 101  76 /   0   0   0   0
La Grange - Fayette Regional   98  77  99  77 /  20  20   0   0
San Antonio Intl Airport       99  78 100  77 /   0   0   0   0
Stinson Muni Airport          101  78 102  77 /   0   0   0   0

&&

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

$$

SHORT TERM...CJM
LONG TERM....CJM
AVIATION...18