206
FXUS64 KEWX 271048
AFDEWX

Area Forecast Discussion
National Weather Service Austin/San Antonio TX
548 AM CDT Sun Sep 27 2026

...New AVIATION...

.KEY MESSAGES...
Updated at 546 AM CDT Sun Sep 27 2026

- Low chance for isolated storms Sunday afternoon and evening over
  the Hill Country and Southern Edwards Plateau.

- Drier with summer-like temperatures continue into early next week.

- A Pacific cold front may bring widespread rain next week.

&&

.SHORT TERM...
(Today through Monday)
Issued at 1200 AM CDT Sun Sep 27 2026

The 500mb high has moved to Deep South TX, and the flow over our
region has become westerly. The low level flow across our CWA is
from the southeast keeping a warm (hot), moist airmass in place. The
upper high will open into a ridge through the short term period the
flow to northwesterly today. This may allow a few showers or
thunderstorms to develop this afternoon. If any storms do form it
will most likely be over the Hill Country and Southern Edwards
Plateau. Convection could last until the early evening, but the
overnight should be dry. Monday the ridge will shift to the east and
suppress any chance for convection. Temperatures through the period
will be about the same as the last few days.

&&

.LONG TERM...
(Monday night through Saturday)
Issued at 1200 AM CDT Sun Sep 27 2026

Models are still showing the first real Pacific cold front of the
season moving into TX, but the timing is not consistent. Now it`s
looking later in the week. Despite this change there are still
chances for widespread rain starting Tuesday. Now models are showing
rain chances extending into Saturday. They are also showing signs of
possible heavy area at times during this period. Although our
confidence for the timing is low, currently the best chances for
heavy rain are Wednesday night through Thursday night. The airmass
change is looking less significant, but all the clouds and rain will
likely keep daytime temperatures down during the second half of the
week, and highs should stay in the 80s Thursday through Saturday.

&&

.AVIATION...
(12Z TAFS)
Issued at 546 AM CDT Sun Sep 27 2026

VFR skies are expected to persist with only a few interruptions
of MVFR CIGS possible near and N of SAT in the next hour or so. Light
E to SE winds will continue, which should help make the later
periods follow diurnal trend trend a lot like the earlier periods.
Thus no low clouds are projected for Monday morning. No
convection is expected near any TAF sites in the area.

&&

.PRELIMINARY POINT TEMPS/POPS...
Austin Camp Mabry             100  74  99  74 /  10   0   0   0
Austin Bergstrom Intl Airport  99  74  98  73 /   0   0   0   0
New Braunfels Muni Airport     97  72  97  72 /   0   0   0   0
Burnet Muni Airport            96  71  95  71 /  20  10   0   0
Del Rio Intl Airport          100  77  99  76 /  10  20   0   0
Georgetown Muni Airport        98  73  97  73 /  10  10   0   0
Hondo Muni Airport             97  73  96  73 /   0   0   0   0
San Marcos Muni Airport        99  72  98  72 /   0   0   0   0
La Grange - Fayette Regional   99  73  98  73 /   0   0   0   0
San Antonio Intl Airport       96  75  96  75 /   0   0   0   0
Stinson Muni Airport           97  75  97  75 /   0   0   0   0

&&

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

$$

SHORT TERM...05
LONG TERM....05
AVIATION...18