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National Weather Service Forecast Discussion
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034
FXUS64 KHGX 222346
AFDHGX
Area Forecast Discussion
National Weather Service Houston/Galveston TX
646 PM CDT Sat Aug 22 2026
...New AVIATION...
.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...
(00Z TAF Issuance)
Issued at 614 PM CDT Sat Aug 22 2026
VFR conditions prevail, across all TAF sites An outflow boundary
is approaching the metro area, and could cause a brief wind shift
out of the N/NW. In general winds prevail at 6-8 kts out of the
SSW and become light and variable overnight. Winds settle in the
WSW tomorrow morning, then increase to about 7-10 kts and swing to
the SSE by tomorrow afternoon. Another round of intermittent
MVFR/IFR CIGS are possible tonight, though are expected to be
"FEW" and "SCT" in nature. MVFR VIS is possible, especially at
KLBX where cooling overnight temps, increased moisture from
onshore flow, and nearly calm winds are expected from about 10Z to
14Z. I have left out any mention of TS/SHRA for tomorrow, as CAMs
show even less of a chance for precip for tomorrow afternoon.
MLG
&&
.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 / 20 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...MLG
MARINE...47
NWS HGX Office Area Forecast Discussion