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National Weather Service Forecast Discussion

648
FXUS64 KHGX 061146
AFDHGX

Area Forecast Discussion
National Weather Service Houston/Galveston TX
646 AM CDT Thu Aug 6 2026

...New AVIATION...

.KEY MESSAGES...

- Seasonably hot with highs in the 90s and heat index values
  100-107F each day.

- An isolated late day shower can`t be ruled out along the
  seabreeze in the afternoons.

- Slightly better rain chances expected Thursday into early next
  week for the eastern and southern parts of the region as some
  deeper moisture flows back inland.

&&

.DISCUSSION...
Issued at 1105 PM CDT Wed Aug 5 2026

Ridging centered over the Southwest CONUS/Four Corners will keep
uneventful weather over the region through the better half of next
week at least. Heights and 850mb temperatures are still expected to
drop into the weekend, resulting slightly lower heat stress and
surface temperatures. Reduced subsidence and rising PWs should bring
better rain chances during this period as well, with isolated to
scattered showers and storms possible along the seabreeze/baybreeze
each afternoon. Highs remain in the 90s each day with heat indices
reaching the triple digits in the afternoon. Some patchy fog will be
possible during the early morning hours.

03

&&

.AVIATION...
(12Z TAF Issuance)
Issued at 636 AM CDT Thu Aug 6 2026

A mix of MVFR to IFR ceilings continues to develop and spread
northward, impacting mainly KCLL, and briefly KSGR. These
conditions are expected to persist through 13-14Z Thursday, before
gradually improving to VFR later this morning. A few showers and
storms are possible near the terminals, but due to low confidence
in occurrence and coverage, only PROB30 groups were included.
Winds will remain generally south-southeasterly with occasional
afternoon gusts, especially at coastal terminals. Looking ahead
to tonight,patchy fog and MVFR ceilings will be possible again,
primarily near KCLL.

JM

&&

.MARINE...
Issued at 1105 PM CDT Wed Aug 5 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 isolated to scattered showers
and storms will be greatest during the late night through early
afternoon hours for the Gulf.

03

&&

.PRELIMINARY POINT TEMPS/POPS...
College Station (CLL)  96  76  95  75 /   0   0   0   0
Houston (IAH)  97  79  95  78 /  20  10  20   0
Galveston (GLS)  91  83  91  83 /  20  10  20   0

&&

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

$$

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

NWS HGX Office Area Forecast Discussion