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National Weather Service Forecast Discussion

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561
FXUS64 KHGX 221734
AFDHGX

Area Forecast Discussion
National Weather Service Houston/Galveston TX
1234 PM CDT Sat Aug 22 2026

...New DISCUSSION, AVIATION, MARINE...

.KEY MESSAGES...

- Heat Advisory remains in effect. Hot conditions will persist
  through next week.

- Cannot rule out a rouge shower or thunderstorm at times into
  midweek, but chances will be quite low.

- Temperatures VERY slightly ease late in the week along with the
  potential for some isolated rain chances.

&&

.DISCUSSION...
Issued at 1234 PM CDT Sat Aug 22 2026

Ridge will remain firmly in control well into the next week...limiting
rain chances and keeping above normal temps in place. Daytime highs
will be in the 100-104F range inland and 90-94 at the beaches.
Heat index readings will peak in the 105-110F range and a Heat
Advisory remains in place.

Mid level heights will begin to ease somewhat Thursday into the
weekend as the center of the ridge repositions itself slightly
further wwd from New Mexico into the Desert Southwest. As such,
we`ll probably see temperatures ease just a tad (from the
currently prevailing 100-104F down into the 98-101F range) and
possibly the return of some low diurnally driven POPs. 47

&&

.AVIATION...
(18Z TAF Issuance)
Issued at 1234 PM CDT Sat Aug 22 2026

VFR conditions prevail alongside westerly to southwesterly winds
around 5-10 kt. Winds will transition to southeasterly around 21Z.
There is low confidence on the placement and extent of afternoon
convection moving in from the northeast. UTS would be the most
likely to see a stray shower or storm should the convection make it
into the area. Their PROB30 covers the most likely timeframe for
convective impacts in the late afternoon. Another round of
intermittent periods of MVFR/IFR ceilings and visibilities will be
possible especially at LBX and near the metro area. VFR conditions
will return by 15Z/Sunday with light winds out of the southwest.

Batiste

&&

.MARINE...
Issued at 1234 PM CDT Sat Aug 22 2026

Southwest to west winds late at night and in the mornings will
become south 10 to 15 knots during the day as the seabreeze kicks
in. Seas will be on the low side...1 to 3 feet.  47

&&

.PRELIMINARY POINT TEMPS/POPS...
College Station (CLL)  79 104  78 102 /  10   0   0   0
Houston (IAH)  81 103  80 101 /  10   0   0   0
Galveston (GLS)  83  92  83  93 /   0   0   0   0

&&

.HGX WATCHES/WARNINGS/ADVISORIES...
TX...Heat Advisory until 7 PM CDT Sunday for TXZ163-164-176>179-
     195>200-210>214-226-227-235>238-300-313-335>338-436>439.

GM...None.

&&

$$

DISCUSSION...47
AVIATION...Batiste
MARINE...47

NWS HGX Office Area Forecast Discussion