978
FXUS64 KHGX 162312
AFDHGX

Area Forecast Discussion
National Weather Service Houston/Galveston TX
612 PM CDT Sun Aug 16 2026

...New AVIATION...

.KEY MESSAGES...

- High pressure will strengthen through the weekend, reducing
  chances of rain to near zero well into next week.

- Slightly above average summertime heat (upper 90s/lower 100s)
  will persist through most of the rest of the month across
  Southeast Texas. The potential for Heat Advisory issuance
  remains elevated as a result.

- Without adequate precautions outdoors, cumulative impacts of
  heat and heat stress will remain a significant risk factor to
  health (especially for heat-sensitive populations).

&&

.DISCUSSION...
Issued at 101 PM CDT Sun Aug 16 2026

Persistent dry and hot weather will continue through the work week
as a ridge continues to ease westward into the state. Daily high
temperatures will be in the upper 80s along the coast and in the
90s to around 100F for inland areas (highest probability of
triple digit temperatures exists in the Brazos Valley and Piney
Woods. Nighttime lows will be in the mid 70s to low 80s.

Opted to hold off on a Heat Advisory for tomorrow. While
temperatures will be hot, decent mixing and dew points in the 60s
to low 70s may keep heat indices below advisory levels. Will need
to continue to monitor through the week as high pressure continues
to build in over the area. Nonetheless, dangerously hot conditions
are expected through the week, particularly for those who are
outside for extended periods of time.

Once we get past midweek, the high will become centered over the
Four Corners region, which will place us in NW flow aloft. As this
happens, an upper level trough is expected to slide through the
Mississippi River Valley and eject an associated frontal boundary
this weekend. At this time it looks as though the front stops just
outside of SE Texas; however, it may be in close enough proximity
to trigger a southward progression of convection later this
week/next weekend.

With hot conditions persisting over the next several days, please
continue to keep heat safety at the top of your minds for any plans
that you make (especially if outdoors). Know the signs of heat-
related illnesses, stay hydrated (with water), take frequent breaks
from the heat, wear loose/light-colored clothing and sunscreen, and
ALWAYS ALWAYS ALWAYS LOOK before you LOCK your vehicle. Don`t forget
about your pets as well! If the ground is too hot for the palm of
your hand, then it is too hot for their paws.

Bailey

&&

.AVIATION...
(00Z TAF Issuance)
Issued at 602 PM CDT Sun Aug 16 2026

VFR conditions prevail at all TAF sites this afternoon, with
winds of 5-10KTS generally out of the SSE. Winds become light and
variable overnight, going nearly calm at most sites. There is
another chance for MVFR CIG/VIS early tomorrow morning at sites
west of I-45. There is even a low chance for some IFR CIGs, so we
will closely monitor conditions tomorrow morning. VFR CIG/VIS
should return shortly after sunrise, and winds turn westerly.
Tomorrow afternoon, winds turn once again and settle out of the
SSE as the seabreeze passes through.

MLG

&&

.MARINE...
Issued at 101 PM CDT Sun Aug 16 2026

A period of benign marine conditions continues with light to
occasionally moderate southerly/southwesterly winds and 2-3 ft seas
prevailing over the next several days.

Batiste/Bailey

&&

.PRELIMINARY POINT TEMPS/POPS...
College Station (CLL)  73 100  76  99 /   0   0   0   0
Houston (IAH)  76  99  78  99 /   0   0   0  10
Galveston (GLS)  81  90  83  91 /   0   0   0   0

&&

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

$$

DISCUSSION...Bailey
AVIATION...MLG
MARINE...Bailey

NWS HGX Office Area Forecast Discussion