756
FXUS64 KEWX 182316
AFDEWX

Area Forecast Discussion
National Weather Service Austin/San Antonio TX
616 PM CDT Fri Jul 18 2025

...New AVIATION...

.KEY MESSAGES...

- Dry and warm weather over the weekend into next week with elevated
  heat index values through the period.

&&

.SHORT TERM...
(Tonight through Saturday night)
Issued at 1253 PM CDT Fri Jul 18 2025

There are mostly sunny to partly cloudy skies across South Central
Texas early this afternoon. This trend continues through early this
evening. Isolated showers are ongoing across the eastern portion of
the local area and the forecast calls for this activity to prevail
through early this evening. Areas to the east of the I-35 corridor
including the Coastal Plains have a 15 to 20 percent chance for a
passing shower or two. Today`s highs are forecast to reach the upper
80s across the southern Edwards Plateau, mid 90s along the I-35
corridor, and up to 101 along the Rio Grande. Increased moisture
tonight into the overnight period is forecast to result in mostly
cloudy skies across most locations with the exception of partly
cloudy skies along the Rio Grande.

Tropical moisture continues to arrive across the local area
throughout the day on Saturday as a mid to upper level trough moves
across South Central Texas associated with the tropical disturbance
that came onshore last night over southeastern Louisiana. Saturday`s
highs are forecast to range from the upper 80s across the southern
Edwards Plateau to the mid and upper 90s along the I-35 corridor,
and up to 102 across the southern portion of the Rio Grande. Heat
index values are forecast to be elevated ranging from 100 to 107
with a few places getting into the 108 to 109. Our suggestions are to
stay hydrated and avoid outside activities during the peak heating
hours which is the afternoon/early evening period.

&&

.LONG TERM...
(Sunday through Friday)
Issued at 1253 PM CDT Fri Jul 18 2025

Dry and warm conditions are forecast for the extended weather period
as the sub-tropical ridge builds and stays across the local area
through Friday. Elevated heat index values from 100 to 107 are
expected for areas along the I-35 corridor, Coastal Plains, and Rio
Grande each afternoon.

&&

.AVIATION...
(00Z TAFS)
Issued at 612 PM CDT Fri Jul 18 2025

VFR flight conditions prevail into tonight at all TAF sites with few
to sct mid-level cumulus and sct to bkn high level clouds to the east
of I-35. There is a storm or two in the coastal plains but they will
subside after dark with no impacts at the TAF sites. Low stratus will
develop and increase overnight into Saturday morning with prevailing
MVFR conditions at the San Antonio terminals while Austin could see
temporary MVFR ceilings. KDRT will remain VFR through the night. The
conditions improve to VFR at all sites by mid to late morning and
prevails through the rest of the period. Light to moderate south to
southeasterly breezes continue.

&&

.PRELIMINARY POINT TEMPS/POPS...
Austin Camp Mabry              76  96  77  96 /  10  10   0   0
Austin Bergstrom Intl Airport  76  96  77  96 /  10  10   0   0
New Braunfels Muni Airport     75  97  76  97 /   0   0   0   0
Burnet Muni Airport            74  93  75  93 /   0   0   0   0
Del Rio Intl Airport           76  97  77  98 /   0   0   0   0
Georgetown Muni Airport        75  94  76  95 /  10  10   0   0
Hondo Muni Airport             74  96  74  96 /   0   0   0   0
San Marcos Muni Airport        75  96  75  96 /   0   0   0   0
La Grange - Fayette Regional   76  95  76  94 /  10  10   0   0
San Antonio Intl Airport       77  96  77  96 /   0   0   0   0
Stinson Muni Airport           76  99  77  98 /   0   0   0   0

&&

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

$$

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