502
FXUS64 KEWX 310524
AFDEWX

Area Forecast Discussion
National Weather Service Austin/San Antonio TX
1224 AM CDT Fri May 31 2024

...New AVIATION...

.SHORT TERM...
(Tonight through Friday night)
Issued at 228 PM CDT Thu May 30 2024

Concerns in the short term period continue to be focused on
thunderstorm chances along with the potential for severe storms.
Current radar trends are fairly quiet with only some recent attempts
for convection noted in the coastal plains southeast of San Antonio.
Looking elsewhere, an outflow boundary is noted across west central
Texas into north Texas with storms developing mainly along and
behind this feature.

Over south central Texas, the hi-res models tend to favor areas
along and east of I-35/I-37 through this afternoon for some isolated
convection developing within an axis of higher surface-based CAPE as
noted on recent SPC mesoanalysis products. A localized hail and wind
threat will likely accompany the stronger storms. As the late
afternoon and evening hours progress the above mentioned outflow
boundary will likely move southward and help gin up some scattered
convection, mainly across the Hill Country and nearby I-35 corridor
near Austin. The other area we will be monitoring is out west along
the Rio Grande where some activity from the lower Trans Pecos or
west of the Rio Grande may move southeast or east toward Val Verde
county late this afternoon and evening. With plenty of instability
and adequate shear, the main severe weather concerns will be large
hail and damaging winds. In addition, an isolated tornado can`t be
ruled out. Recent SPC outlooks have increased the severe weather
threat with a small area of Enhanced Risk (level 3 of 5) clipping
northern Burnet and Llano counties. Farther south, a Slight Risk
(level 2 of 5) is in place to the Highway 90 corridor, with a
Marginal Risk (level 1 of 5) over the remainder of the region. There
will also be the potential for locally heavy rainfall and some minor
flooding as well, with WPC favoring our northern areas mainly north
of I-10.

Confidence in what transpires for the early morning hours on Friday
is fairly low as much will depend on what happens this evening. For
now, we will carry a decent chance for showers and storms for areas
generally north of I-10. Most guidance agrees that whatever manages
to move in from the north should be gradually weakening as we head
into the early morning hours on Friday.

The forecast for Friday afternoon into Friday Night will largely
depend on what takes place tonight into Friday morning. With this in
mind, will lean toward some gradual clearing from late Friday
morning into the afternoon hours. This along with daytime heating
and any remnant outflow boundaries from previous convection should
be enough to generate another round of afternoon and evening
convection. SPC currently places a Slight Risk (level 2 of 5) for
severe storms across most of south central Texas. This will likely
be adjusted in subsequent forecasts. If storms manage to develop,
large hail and damaging winds will be the main severe weather
concerns.

&&

.LONG TERM...
(Saturday through Thursday)
Issued at 228 PM CDT Thu May 30 2024

Saturday morning begins with isolated to low end chances for showers
and storms mainly across the Hill Country and along and east of
Highway 77. Cloudy skies are forecast for most areas through the
morning period, however, low level cloud deck breaks and gives way
to partly cloudy skies for the afternoon. Highs are likely to range
from the upper 80s to low 90s across the Hill Country, I-35 and the
coastal plains to the upper 90s and up to the 100 to 102 range along
the Rio Grande.

Scattered showers and storms initiate mid to late Saturday afternoon
over west Texas ahead of the dryline and to the south of a weak
frontal boundary over central Texas. An upper level short wave
moving across the Southern Plains through the period is forecast to
drive convection over parts of the Rio Grande, southern Edwards
Plateau and Hill Country mainly in the evening into the overnight
hours. Some of these storms could end up being strong to marginally
severe capable of producing damaging wind gusts and large hail. The
stormy conditions come to an end from west to east with overnight
lows in the 70s and even low 80s along the Rio Grande.

The wet pattern comes to an end with low chances for showers and
isolated storms mainly over the northern part of the Hill Country on
Sunday. High temperatures are slightly increasing over all areas
with highs ranging from the low to mid 90s across most locations and
up to 103 along the southern part of the Rio Grande.

The dry and warmer weather conditions continue through the middle
part of next week with highs increasing about a degree or two each
day especially along the Rio Grande. Increased moisture arrives
during this part of the extended forecast period and heat index
values are likely to be close and even reaching critical values
across parts of the I-35 corridor, coastal plains and the Rio Grande
plains. More details on this topic as we get closer that period.

&&

.AVIATION...
(06Z TAFS)
Issued at 1223 AM CDT Fri May 31 2024

Difficult forecast with respect to impacts from SHRA/TSRA. A cluster
may impact KAUS early in the morning and have introduced VCSH there.
Then, PROB30s for midday through early evening. Otherwise, MVFR CIGs
lifting to VFR by midday, then returning Friday night.
Southeasterly, occasionally breezy winds prevail. However, SHRA/TSRA
may bring shifting winds with strong gusts.

&&

.PRELIMINARY POINT TEMPS/POPS...
Austin Camp Mabry              74  91  75  92 /  30  30  10  10
Austin Bergstrom Intl Airport  74  91  75  93 /  30  30  10  10
New Braunfels Muni Airport     75  94  75  95 /  30  30  10  10
Burnet Muni Airport            72  88  73  90 /  30  30  20  20
Del Rio Intl Airport           79 101  80 100 /  20  10  30  10
Georgetown Muni Airport        72  89  74  91 /  30  30  10  20
Hondo Muni Airport             75  95  76  96 /  30  10  20  10
San Marcos Muni Airport        73  92  75  93 /  30  30  10  10
La Grange - Fayette Regional   75  90  76  92 /  20  30  10  10
San Antonio Intl Airport       76  94  77  95 /  40  20  20  10
Stinson Muni Airport           77  95  78  96 /  30  20  10  10

&&

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

$$

Short-Term...04
Long-Term...Brady
Aviation...04