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000
FXUS64 KEWX 221837
AFDEWX

Area Forecast Discussion
National Weather Service Austin/San Antonio TX
137 PM CDT Mon Apr 22 2024

...New SHORT TERM, LONG TERM...

.SHORT TERM...
(Tonight through Tuesday night)
Issued at 138 PM CDT Mon Apr 22 2024

Fair weather conditions will continue through the short term period
as upper level ridging slowly builds in from the west and surface
high pressure gradually moves to the east. The eastward moving high
will bring an increase in low level moisture tonight through Tuesday
with morning low stratus making a return by sunrise tomorrow as
dewpoints climb back into the 60s. Clouds will likely burn off
across western areas by mid-day whereas they will struggle to do so
across eastern areas with at least partly cloudy skies remaining.
Therefore, temperatures in the 80s can be expected along the Rio
Grande with mainly 70s elsewhere. Lows then only fall into the 60s
to near 70 Tuesday night with cloud cover building back in.

&&

.LONG TERM...
(Wednesday through Monday)
Issued at 138 PM CDT Mon Apr 22 2024

Weak upper level ridging will slide across the area Wednesday and
Wednesday night while southerly flow continues, with a noticeable
increase in dew points and humidity taking place Tuesday night into
Wednesday. This will lead to warm and humid conditions across the
region on Wednesday.

The upper level ridge will slide east Thursday while an upper level
low over southern California opens and lifts northeast through the
Rockies. Lee side cyclogenesis takes place, with the low lifting
northeast through the Plains Friday and into the upper Midwest Friday
night. This will result in an increase in southerly winds over the
region Thursday and Friday, and continued influx of low level
moisture beneath the cap.

The tail end of the weak upper level forcing may generate isolated
convection across the Trans Pecos, along the dryline, Thursday
afternoon, which could potentially make it into the far northwest
areas of the forecast area Thursday evening, mainly northern Val
Verde county, before weakening. Farther east late Thursday night and
into Friday morning, isolated showers will be possible beneath the
cap.

As the aforementioned surface low lifts northeast the dryline moves
farther east into the southern Edwards Plateau and west-central Texas
Friday afternoon and evening. At question is the cap and amount of
forcing, but ahead of it we could have a potential for a few strong
to severe storms Friday afternoon and evening across the Hill Country
and into central Texas.

Another upper level low is forecast to dig into the Four Corners
Saturday and come out into the Plains Saturday night into Sunday
morning. This system is forecast to be stronger, and forcing
potentially farther south. After the dryline retreats back west
Friday night, it`s forecast to make even farther progression eastward
Saturday afternoon and evening. Forecast soundings indicate the cap
may completely eroded through the Hill Country and southern Edwards
Plateau, allowing for a greater potential for storms to develop
Saturday afternoon and evening, along with a risk for a few strong to
severe storms. The storms could weaken/decay as they move east into
the I-35 corridor late Saturday night into Sunday morning. We will
watch model trends closely and refine the Friday through Sunday
forecast further of the next several days.

&&

.AVIATION...
(18Z TAFS)
Issued at 1212 PM CDT Mon Apr 22 2024

VFR conditions will remain in place this afternoon with a few mid and
upper level clouds across the region. S-SE surface winds will
continue to draw moisture into the region through the period which
will lead to the development of widespread MVFR stratus tonight into
Tuesday morning. This stratus should start to lift and scatter some
towards the end of the period.

&&

.PRELIMINARY POINT TEMPS/POPS...
Austin Camp Mabry              73  56  78  65 /   0   0   0   0
Austin Bergstrom Intl Airport  73  52  78  64 /   0   0   0   0
New Braunfels Muni Airport     75  54  79  65 /   0   0   0   0
Burnet Muni Airport            72  56  77  64 /   0   0   0   0
Del Rio Intl Airport           77  62  87  69 /   0   0   0   0
Georgetown Muni Airport        72  54  77  64 /   0   0   0   0
Hondo Muni Airport             75  56  78  64 /   0   0   0  10
San Marcos Muni Airport        73  53  78  64 /   0   0   0   0
La Grange - Fayette Regional   72  54  78  65 /   0   0   0   0
San Antonio Intl Airport       74  57  77  66 /   0   0   0   0
Stinson Muni Airport           74  57  78  66 /   0   0   0   0

&&

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

&&

$$

Short-Term...Gale
Long-Term...76
Aviation...Gale