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National Weather Service Forecast Discussion

359
FXUS64 KHGX 071139
AFDHGX

Area Forecast Discussion
National Weather Service Houston/Galveston TX
639 AM CDT Fri Aug 7 2026

...New AVIATION...

.KEY MESSAGES...

- Scattered seabreeze showers and thunderstorms expected on a
  daily basis into early next week.

- Seasonably hot with highs in the 90s and heat index values
  101-108F each day.

&&

.DISCUSSION...
Issued at 1133 PM CDT Thu Aug 6 2026

Hot weather with daily rain chances should continue through early
next week. Ridging reminds situated over the Four corners region,
though heights and 850mb temperatures have decreased. Daytime highs
should be a tad lower compared to past days, though heat indicies
will still reach triple digits, thus it would be worth practicing
heat safety. Shower/storm coverage yesterday outperformed the NBM
slightly, and thus scattered showers/storms are likely to
continue daily through the weekend into early next week as PW
values continue to rise. Much of this activity will occur during
the afternoon along the sea/bay breeze, generally covering the
southern 2/3rds of our CWA. With deeper moisture, we`ll also need
to keep an eye out for patchy fog during the early morning hours.

Around Tuesday, 850mb temperatures begin to rise again as ridging
builds across the northwestern Gulf. Temperatures slowly nudge
upwards by a few degrees, along with heat indicies through the end
of the work week as rain chances decrease.

03

&&

.AVIATION...
(12Z TAF Issuance)
Issued at 639 AM CDT Fri Aug 7 2026

MVFR to isolated IFR conditions due to low cigs are expected
in/around KCLL over the next few hours. Elsewhere, VFR conditions
will prevail; however, brief periods of MVFR cannot be ruled out
through 14-15Z. After mid-morning, conditions will improve to VFR
across all terminals under light SSE winds. Winds will strengthen in
the afternoon with the seabreeze, particularly for terminals from
IAH coastward. We`ll continue to monitor rain and storm chances
today. Most of this activity will remain isolated to scattered,
though confidence in occurrence, timing, and coverage is low.
Therefore, will continue with a PROB30, mostly from KCXO coastward.
Based on the latest guidance, the best chance for rain/storms will
be in the 18-23Z window. Erratic winds and reduced visibility can be
expected with any strong storms. Light and variable winds return
tonight under mostly clear skies. Patchy fog as well as patches of
MVFR cigs will be possible toward sunrise (early Saturday) near the
KCLL terminal.

JM

&&

.MARINE...
Issued at 1133 PM CDT Thu Aug 6 2026

Onshore winds 10-15 knots and seas of 2-4 feet are expected
throughout the next several days. Rain chances increase slightly
through early next week. Chances for scattered showers and storms
will be greatest during the early morning through early afternoon
hours for the Gulf.

03

&&

.PRELIMINARY POINT TEMPS/POPS...
College Station (CLL)  96  75  95  75 /  20   0  10  10
Houston (IAH)  96  78  94  78 /  30   0  30  10
Galveston (GLS)  91  82  91  82 /  20  10  30  10

&&

.HGX WATCHES/WARNINGS/ADVISORIES...
TX...None.
GM...None.
&&

$$

DISCUSSION...03
AVIATION...JM
MARINE...03

NWS HGX Office Area Forecast Discussion