488
FXUS64 KEWX 172347
AFDEWX

Area Forecast Discussion
National Weather Service Austin/San Antonio TX
547 PM CST Wed Dec 17 2025

...New AVIATION...

.KEY MESSAGES...

-  Rain showers with a few embedded storms continue through this
   afternoon in coastal plains; elsewhere mostly grey with some
   areas with light rain/drizzle and reductions in visibility.

-  Patchy to areas of fog to expand in area after sunset and may
   linger into Thursday morning

-  Drier, slightly cooler post-frontal airmass expected Thursday
   night into Friday then becoming much warmer with well above
   average temps from the weekend through early next week

&&

.SHORT TERM...
(Tonight through Thursday night)
Issued at 1159 AM CST Wed Dec 17 2025

Shower activity with the occasional isolated embedded
thunderstorm has blossomed across the coastal plains, mainly south
of Interstate 10, from mid to late this morning. An isolated
location or two may see amounts around or a little more than an
inch. The activity in the coastal plains should decrease from late
afternoon through this evening. For many outside of the coastal
plains, will continue to experience a grey, overcast day with
general dampness from some lingering light drizzle/mist.
Visibility across the region vary in short distances but may
remain reduced for portions of the region into and through the
afternoon. Best odds will be aligned right along the Balcones
Escarpment. Lower visibilities will likely then expand after dark,
and we`ll monitor for any regions that dense fog could establish.
The exception for the grey weather this afternoon occurs along
the Rio Grande where sunshine is expected behind a clearing line
that advances across the area. This is where the temperatures will
trend warmest today, with highs reaching into the 70s. Underneath
the cloud cover, the temperatures will struggle to climb with
highs mainly topping in the low to mid 60s.

An unseasonably warm and mostly cloudy to overcast sky primarily
is expected tonight in the advance of an approaching cold front
with overnight lows in the 50s and low 60s for most. As mentioned
in the paragraph above, we`ll monitor for any potential dense fog
tonight into early Thursday. This front is expected to move across
the region sometime from mid-morning into mid-afternoon. It will
result in a northerly wind shift with post-frontal wind gusts
peaking in the 20 to 30 mph range. While conditions could promote
elevated fire weather conditions with the combination of the winds
and the drier humidity, the recent dampness/rainfall has area
fuels with above normal fuel dryness. The peak winds do not last
long and should begin to gradually drop off towards and after
sunset. The north winds will help bring some cold air advection
but it`s nothing that is out of the ordinary for this time of
year. It will lead to the coolest night in the forecast over the
next week or so with the overnight lows into Friday morning
dipping down into the mid 30s to the mid 40s.

&&

.LONG TERM...
(Friday through next Wednesday)
Issued at 1159 AM CST Wed Dec 17 2025

Friday will feature highs in the mid 60s to the low 70s and will
be the coolest day within the long term as temperatures will soar
for the rest of the period with well above average daytime highs
becoming common from the mid 70s into the low 80s. Overnight lows
are to climb as well reaching up into the 50s and low to mid 60s
by early next week. This will be from the result of the return of
a steady low-level/surface flow and the presence of a tame upper
level pattern with ridging building in early next week after an
initial period of nearly zonal flow. No rain is expected within
the long term but do expect for a general uptick in clouds and
moisture into early next week.

&&

.AVIATION...
(00Z TAFS)
Issued at 539 PM CST Wed Dec 17 2025

Poor flying conditions continue at this hour and through most of
the forecast period. MVFR cigs have returned for all I-35 TAF
sites. We expect these cigs to be brief as we did see some
thinning of the cloud deck just before sunset. Have forecasted
cigs to drop to IFR/LIFR in the next couple hours as fog sets in.
We could see Vis drop to 1/2 mile overnight and remain low with
low cigs through early morning. Expect light rain(drizzle) to
continue mainly before midnight at all I-35 TAF sites. Cigs
gradually improve late morning and we should see most sites return
to a mix of MVFR and VFR by afternoon hours. For KDRT expect VFR
cigs to continue before fog forms and becomes somewhat dense
overnight. Cigs and vis improve by late morning/early afternoon as
this system pushes off to the east.

&&

.PRELIMINARY POINT TEMPS/POPS...
Austin Camp Mabry              59  77  43  67 /  10   0   0   0
Austin Bergstrom Intl Airport  59  78  40  68 /  10   0   0   0
New Braunfels Muni Airport     59  79  42  67 /  10   0   0   0
Burnet Muni Airport            56  72  38  66 /  10   0   0   0
Del Rio Intl Airport           48  80  42  70 /   0   0   0   0
Georgetown Muni Airport        58  74  38  67 /  10   0   0   0
Hondo Muni Airport             55  81  40  69 /  10   0   0   0
San Marcos Muni Airport        59  79  41  68 /  10   0   0   0
La Grange - Fayette Regional   61  78  42  67 /  10   0   0   0
San Antonio Intl Airport       59  79  44  67 /  20   0   0   0
Stinson Muni Airport           60  78  44  68 /  10   0   0   0

&&

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

$$

SHORT TERM...62
LONG TERM....62
AVIATION...CJM