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National Weather Service Forecast Discussion

793
FXUS64 KHGX 241050
AFDHGX

Area Forecast Discussion
National Weather Service Houston/Galveston TX
550 AM CDT Wed Jun 24 2026

...New AVIATION...

.KEY MESSAGES...

- Hot conditions will continue this week, with potential for heat
  stress issues as heat indices approach 105-107F (41-42C) each
  day and WBGT risk peaks in the red category.


&&

.DISCUSSION...
Issued at 1210 AM CDT Wed Jun 24 2026

Seasonably strong H5 ridging, centered in the vicinity of far west
Texas/NE Mexico, is evident on WV imagery this evening. Although
a few convecitvely-enhanced disturbances are currently pivoting
southeastward along its northern periphery these will track east
of the area. The aforementioned ridge will gradually shift
east of the area later this week, with an amplified eastern US
ridge/west coast trough pattern taking shape for early next week.
The subsident influence of the ridge and associated dry air (PWATs
generally running in the 25th-33rd percentiles) will keep rain
chances very low, generally 5 percent or less, through early next
week.

Naturally given the time of year and limited rain chances/cloud
cover, hot temperatures can be expected through the period with
highs in the mid 90s and peak heat indices between 102 and 107
degrees. Although it would appear that we will largely remain
below heat advisory criteria, we will likely get quite close at
times, particularly early next week as a SAL plume reaches the
area. Additionally the combination of relatively light winds
(particularly inland), the high June sun angle, and the
aforementioned high heat/humidity will result in peak max WBGT
values in the high (red) risk category each afternoon.

&&

.AVIATION...
(12Z TAF Issuance)
Issued at 522 AM CDT Wed Jun 24 2026

Some MVFR CIGS have filled in early today, generally in areas
north/northwest of KIAH, with brief IFR CIGS/decks around KCLL.
FLs should improve after sunrise with CIGS scattering/lifting back
to VFR conditions. Winds veer south to southwest during the
daytime, then become light and variable in the evening after
sunset. Another short round of MVFR CIGS may develop again early
Thursday morning, generally in that same areas north/northwest of
the Houston metro area. The diurnal cycle should continue with
those CIGS clearing out later in the morning.

03

&&

.MARINE...
Issued at 1210 AM CDT Wed Jun 24 2026

Gentle to moderate southerly flow will prevail through the workweek
with periods of fresh southerly winds expected this weekend. Seas
will generally run 2 to 4 ft through the workweek increasing to 3 to
5 ft into the weekend.

&&

.PRELIMINARY POINT TEMPS/POPS...
College Station (CLL)  94  73  94  76 /   0   0   0   0
Houston (IAH)  94  75  93  77 /   0   0   0   0
Galveston (GLS)  88  81  88  82 /   0   0   0   0

&&

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

$$

DISCUSSION...NC
AVIATION...03
MARINE...NC

NWS HGX Office Area Forecast Discussion