693
FXUS64 KCRP 150827
AFDCRP

Area Forecast Discussion
National Weather Service Corpus Christi TX
327 AM CDT Sun Sep 15 2024

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

.SHORT TERM...
(Today through Monday)
Issued at 321 AM CDT Sun Sep 15 2024

Key Messages:

- Minor flooding in the Rio Grande Plains this morning.

- Minor to moderate across South Texas, today and Monday.

- Low to medium (30-60% chance) of showers and thunderstorms today
for all of South Texas.

- Low to medium (20-40% chance) of showers and thunderstorms for
Monday over the Brush Country and Rio Grande Plains

This morning has been a bit complicated with the 500 mb vort max
that moved into the Rio Granded Plains overnight with the 2" PWAT
values, kicking off a round of heavy rain. While the rain looks to
be trending down this morning, another round is expected to be at
least close to the Rio Grande Plains, later this morning and early
this afternoon when the remnants of TS Ileana arrive. Just like this
morning`s convection, the next round is expected to remain mainly in
the west, and move southeast into Deep South Texas by the evening.
Then tonight another shortwave, which is rather inactive when it
gets to south Texas will move through and bring drier air into the
region and clear out the convection for Monday morning. However, we
look to still have some left over moisture in the west so as to
allow us to kick off one more small bout of convection for Monday
afternoon.

Of course, with the rain, there will be clouds, which will help us
remain a bit cooler than the last few days especially in the Rido
Grande Plains as high temperatures range from the mid 80s near LRD
to the mid 90s around VCT. Monday looks to shape up a bit warmer,
with areas south of a line from LRD to NGP expected to be less than
95 degrees, and north of that line 95-100. So between today and
Monday, we should see less heat impacts today, with the Minor to
moderate impacts coming back for Monday.

&&

.LONG TERM...
(Monday night through next Saturday)
Issued at 321 AM CDT Sun Sep 15 2024

Key Messages:

- Moderate to Major risk of heat related impacts mid to late week.

Ridging will settle back over the region during the Extended period
bringing drier air aloft. However, daily low rain/storm chances will
remain in the forecast through late week as there will still be
enough low-level moisture around to combine with daytime instability
to spark a few showers along the sea breeze. A mid-level trough will
then follow over the weekend, crossing the Plains and maintaining a
low to medium precipitation chance in the forecast through Sunday
(<30%). In terms of hazards, the main headlines will once again be
the heat. Warm temperatures and high dewpoints will lead to heat
index values in the 105-114 range all week, with the warmest days
being Wednesday through Friday. Heat Advisories may be required at
later packages. The HeatRisk will be at Moderate to Major through
the end of the work week. Therefore, heat related impacts will be
possible.

&&

.AVIATION...
(06Z TAFS)
Issued at 1038 PM CDT Sat Sep 14 2024

VFR conditions are in place at all terminals with the exception of
LRD where a cluster of showers and thunderstorms are passing
through. This activity will gradually spread east overnight,
generally as showers impacting our eastern terminals. As we have seen
the last few nights, another round of MVFR ceilings/visibilities
is possible at ALI/VCT from 10-14Z. Showers and storms will push
east of the region through the afternoon hours Sunday. Confidence
is in the exact placement of any TS is low so have opted for VCSH
at this time. Will be monitoring the trends through the day.

&&

.MARINE...
Issued at 321 AM CDT Sun Sep 15 2024

A weak south to southeast flow will persist through Monday. There
is a low 20% chance of showers and thunderstorms during the day on
Sunday as Pacific moisture advects from Pacific Tropical Storm
Ileana. Weak to moderate onshore flow will persist through the
end of the work week. There is a low (15-30%) chance of showers
and thunderstorms daily.

&&

.PRELIMINARY POINT TEMPS/POPS...
Corpus Christi    88  75  93  75 /  40  10  10   0
Victoria          94  73  95  73 /  20   0  10   0
Laredo            85  74  93  76 /  60  30  40   0
Alice             88  74  95  74 /  30  10  20   0
Rockport          88  77  90  78 /  30   0  10   0
Cotulla           89  74  97  76 /  30   0  10   0
Kingsville        89  75  94  75 /  30  10  20   0
Navy Corpus       88  79  90  79 /  30  10  10   0

&&

.CRP WATCHES/WARNINGS/ADVISORIES...
TX...None.
GM...None.

&&

$$

SHORT TERM...JSL/86
LONG TERM....ANM/88
AVIATION...TC