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National Weather Service Forecast Discussion

398
FXUS64 KHGX 241654
AFDHGX

Area Forecast Discussion
National Weather Service Houston/Galveston TX
1154 AM CDT Fri Jul 24 2026

...New DISCUSSION, MARINE...

.KEY MESSAGES...

- Scorching hot weather, especially Sunday throughout the upcoming
  work week. Heat Advisories Likely.

- Highs in the 90s/triple digits and heat index values of 104-112.

&&

.DISCUSSION...
Issued at 1151 AM CDT Fri Jul 24 2026

After a prolonged period of active weather, Southeast Texas is
slated to finally have a fair stretch of calmer weather as a 592-600
dam ridge settles in over the Four Corners/Southern Plains region.
Isolated showers (maybe a storm or two at most), will still be
possible this afternoon, decreasing and becoming more sparse in
nature on Saturday and onwards. Nature`s blowtorch kicks into full
force from Sunday throughout the upcoming work week as 850mb
temperatures climb to around 19-25C. This should result in high
temperatures in the 90s to triple digits, with the warmest
conditions currently anticipated around Thursday. Daily heat index
values could reach 104-112 during the afternoon hours (higher in
locally warm spots like asphalt/synthetic turf/etc). Overnight lows
will not offer much relief with early morning temperatures in the
mid 70s/lower 80s. Heat stress on the human body (based on WBGT)
will peak at Extreme levels each afternoon for many spots. Heat
advisories are likely to be needed for at least some duration during
this period, thus heat safety should be practiced closely.

03

&&

.AVIATION...
(12Z TAF Issuance)
Issued at 526 AM CDT Fri Jul 24 2026

GOES PW imagery shows some drier air beginning to move into the
region from the ESE, though with values still in the 1.7-2.0"
territory, one cannot rule out some isolated showers today. That
said, they should be short-lived at any individual site with
little impact...so these chances won`t be mentioned in the TAFS.
Otherwise, some sporadic MVFR cigs should lift into VFR territory
areawide by 15-16z. Southerly winds 10-15kt should diminish after
sunset. SREF indicates some patchy fog potential west and north of
the metro area late tonight/early Sat morning.  47

&&

.MARINE...
Issued at 1151 AM CDT Fri Jul 24 2026

Light to moderate south/southwest winds and seas of 2-4 feet are
expected throughout the next several days.

03

&&

.PRELIMINARY POINT TEMPS/POPS...
College Station (CLL)  75  94  74  96 /   0  10   0   0
Houston (IAH)  77  95  76  98 /   0  10   0  10
Galveston (GLS)  83  91  82  92 /   0  10  10   0

&&

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

$$

DISCUSSION...03
AVIATION...47
MARINE...03

NWS HGX Office Area Forecast Discussion