Area Forecast Discussion
Issued by NWS Austin/San Antonio, TX

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095
FXUS64 KEWX 141049
AFDEWX

Area Forecast Discussion
National Weather Service Austin/San Antonio TX
549 AM CDT Mon Sep 14 2026

...New AVIATION...

.KEY MESSAGES...
Updated at 547 AM CDT Mon Sep 14 2026

- Another Heat Advisory has been issued for the I-35 Corridor and
  Coastal Plains today from 12 PM to 7 PM.

- Low rain chances (10-20%) each day through the week, mainly over
  the Coastal Plains.

- Humid morning conditions and above average temperatures continue
  through the the week.

&&

.SHORT TERM...
(Tonight through Tuesday night)
Issued at 1200 AM CDT Mon Sep 14 2026

The upper level ridge center continues to push over northeast
Texas early Monday and then shifts into the southeast states. This
weather pattern promotes above normal temperatures and critical
humidity levels for several days. With that said, a Heat Advisory
is in effect for the I-35 corridor and Coastal Plains from noon
through 7 PM. Highs ranging from the mid to upper 90s and up to
103 degrees. Heat index could reach up to 111.

No significant weather changes for Tuesday with similar conditions
forecast as those on Monday with highs in the mid to upper 90s and
up to 103 degrees. Heat index values will be elevated with
additional heat advisories potentially being issued again for
areas along and east of the I-35 corridor.

&&

.LONG TERM...
(Wednesday through next Monday)
Issued at 1200 AM CDT Mon Sep 14 2026

The upper level ridge dominates the local area weather promoting
hot and humid conditions. Additional Heat Advisory may be needed
for Wednesday, Thursday, and even Friday. Any shower or
thunderstorm activity should be across the Coastal Plains. For
next weekend, an upper level disturbance moving westward across
the Gulf states and an upper level disturbance coming down across
the Southern Plains could bring beneficial rains for some parts of
South Central Texas.

&&

.AVIATION...
(12Z TAFS)
Issued at 547 AM CDT Mon Sep 14 2026

Primary concern this forecast period will be breezy southeasterly
winds this evening, primarily at SAT and SSF as the seabreeze
moves inland. Persistence has been the most reliable trend for
the past few days on picking MVFR CIG time windows. Outside of
about 4-7 hours in the predawn to late morning hours. VFR skies
will predominate the rest of the periods. Gusty winds are possible
with the sea-breeze, which should mainly be felt along I-35
Corridor. The sea-breeze could also bring a stray shower, but not
enough to plan for in the TAFs.

&&

.PRELIMINARY POINT TEMPS/POPS...
Austin Camp Mabry             100  77 102  77 /  10  10   0   0
Austin Bergstrom Intl Airport 100  77 101  76 /  10  10   0   0
New Braunfels Muni Airport     99  75 100  75 /  10  10   0   0
Burnet Muni Airport            97  74  98  73 /   0   0   0   0
Del Rio Intl Airport          100  77 101  76 /   0   0   0   0
Georgetown Muni Airport       100  77 100  76 /   0   0   0   0
Hondo Muni Airport             99  74 100  73 /   0   0   0   0
San Marcos Muni Airport        99  75 100  75 /  10  10   0   0
La Grange - Fayette Regional   99  77 100  76 /  30  10  10   0
San Antonio Intl Airport       99  78 100  77 /  10  10   0   0
Stinson Muni Airport          100  77 101  76 /  10   0   0   0

&&

.EWX WATCHES/WARNINGS/ADVISORIES...
Heat Advisory from noon today to 7 PM CDT this evening for
TXZ173-191>194-205>209-220>225.

&&

$$

SHORT TERM...17
LONG TERM....17
AVIATION...18