940
FXUS64 KHGX 232304
AFDHGX

Area Forecast Discussion
National Weather Service Houston/Galveston TX
604 PM CDT Sun Aug 23 2026

...New AVIATION...

.KEY MESSAGES...

- Heat Advisory remains in effect.

- Cannot rule out an isolated shower or thunderstorm at times into
  midweek, but chances will be quite low for most of the area.

- Temperatures slightly ease late in the week along with the
  potential for some rain chances returning to the forecast.

&&

.DISCUSSION...
Issued at 133 PM CDT Sun Aug 23 2026

Temperatures are currently running 2-5 degrees lower than yesterday
at this time thanks to the debris cloudiness passing overhead.
Satellite pix show the sun re-emerging so we still have plenty of
time to get some of those readings back close to 100F. Like
previous days, cannot rule out an isolated storm or two late in
the day/evening. Consider yourself lucky if one passes overhead as
most of us will remain dry.

If you`ve enjoyed the wx for the past several days, you`re in for
a treat because more of the same is anticipated thru at least
midweek. Will maintain the ongoing Heat Advisories in place.

Later in the week (Thursday and beyond), the western mid-upper
ridge moves a bit further to the west which will allow for falling
heights locally and a gradual easing of the 100F+ temps. It appears
that llvl ridging in the Gulf will also lose some of its grip. A
more prevalent SSE flow emerges (versus the current SW) and opens
up a better trajectory for some higher PW Gulf air to flow
inland. Combination of this, less potent subsidence aloft, and
some east-to-west mid level impulses should allow for the mention
of some POPs to return to the fcst. Suspect we`ll see rain
chances trend higher than we currently have in our fcst assuming
the wetter 12z deterministic model suites show some consistency as
time marches on. 47

&&

.AVIATION...
(00Z TAF Issuance)
Issued at 547 PM CDT Sun Aug 23 2026

VFR conditions prevail at all TAF sites with SSE winds of 7-12 kts
and minimal cloud cover. So far, convection has not initialized.
We are starting to get a loss of daytime heating, so chances for
TS/SHRA are decreasing for the rest of this afternoon and evening.
Winds for this TAF period prevail at SSE, then decrease and veer
WSW/SW overnight. Winds turn to the SSE and increase to the 7-12
kt range once again tomorrow afternoon. Early tomorrow morning
around sunrise, another round of MVFR CIG/VIS is possible, mainly
south of I-10. Any MVFR CIGs that develop are expected to be
short lived, with VIS only dropping to 7-9 SM. VFR conditions
return by about 15Z tomorrow at all TAF sites.

MLG

&&

.MARINE...
Issued at 133 PM CDT Sun Aug 23 2026

Southwest to west winds late at night and in the mornings will
become south 10 to 15 knots during the day as the seabreeze kicks
in. Seas will be 1 to 3 feet. A more prevailing southeast to southeast
flow should set back up late in the week and weekend along with
the return of some isolated to scattered rain chances.  47

&&

.PRELIMINARY POINT TEMPS/POPS...
College Station (CLL)  78 103  77 102 /  20   0   0  10
Houston (IAH)  80 101  79 101 /  20  10  10  10
Galveston (GLS)  83  93  84  92 /  10   0   0  10

&&

.HGX WATCHES/WARNINGS/ADVISORIES...
TX...Heat Advisory until 7 PM CDT Monday for TXZ163-164-176>179-
     195>200-210>214-226-227-235>238-300-313-335>338-436>439.

GM...None.
&&

$$

DISCUSSION...47
AVIATION...MLG
MARINE...47