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National Weather Service Forecast Discussion

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328
FXUS64 KHGX 271820
AFDHGX

Area Forecast Discussion
National Weather Service Houston/Galveston TX
120 PM CDT Wed May 27 2026

...New DISCUSSION, MARINE...

.KEY MESSAGES...

- Band of showers and storms will continue to move across the
  region through this evening. Some storms could be locally strong
  and also produce heavy downpours and gusty winds.

- Mariners should check the latest weather conditions and forecast
  before beginning or continuing their transits. Hazardous
  conditions are expected through this evening.

- Less active weather is anticipated for the remainder of the
  week.

&&

.DISCUSSION...
Issued at 1251 PM CDT Wed May 27 2026

Showers and thunderstorms associated with a storm complex will
continue to move east across the Upper Texas Coast through this
evening, with the heaviest activity expected to remain over the
areas near and south of I-10. Strong gusty winds could develop as
these storms pass through. Rain chances will ebb tonight as drier
air moves in behind the storm complex, although, the coastal
locations could still have some isolated activity overnight.
Otherwise, partly cloudy skies along with patchy fog, light winds,
and lows in the upper 60s to lower 70s can be expected tonight
into early Thursday.

A mid to upper level trough pattern will persist into Thursday.
However, moisture along the surface only recovers slightly and
remains very dry along the mid levels. There isn`t much
instability either during the day and the vort maxes that could
pass through look to be fairly week. Thus, shower and thunderstorm
activity will likely be limited and may be generally focused over
areas near and south of I-10 and east of I-45. Conditions will be
warming up and highs will increase into the mid to upper 80s on
Thursday. Skies will be mostly sunny to partly cloudy with light
variable winds. The lows Thursday night into Friday morning will
be mainly in the lower 70s.

Mostly warm tranquil conditions are expected on Friday as the
eastern periphery of weak a mid to upper level ridge moves into
Southeast TX. There might be enough moisture and instability for
isolated showers and thunderstorms to develop - especially for
areas near and south of I-10, but for now, will keep PoPs below
15% for much of Southeast TX. The highs on Friday are expected to
be in the upper 80s with some isolated spots possibly reaching 90
degrees F. Winds will remain light and with dewpoints in the 70s,
temperatures will feel closer to the mid 90s for many locations.
Similar but slightly warmer conditions are expected on Saturday
as the ridge helps to limit rain chances. Keep that in mind if you
plan to work or spend long periods of time outdoors.

The ridge is expected to weaken and shift east Saturday night, and
will then be followed by a few disturbances pushing across TX Sunday
into early next week. With pockets of warm moisture air pushing
in from the Gulf at times, there will be a chance for diurnally
driven showers and thunderstorms each day. The daytime highs will
also remain in the upper 80s to lower 90s.

Cotto

&&

.AVIATION...
(12Z TAF Issuance)
Issued at 622 AM CDT Wed May 27 2026

MVFR CIGs ongoing at CLL this morning and CXO experiencing LIFR
CIGs. All other sites at VFR. Periods of MVFR CIGs will continue
through the morning hours. Additionally, periods of showers are
expected to continue through the morning through early afternoon
hours. Dry conditions will continue during the rest of the
afternoon through the end of the period. Winds will be out of the
SE and light.

Bailey

&&

.MARINE...
Issued at 1251 PM CDT Wed May 27 2026

A storm complex will continue to move east across the coastal
waters through this evening. Strong northeast winds are expected
to develop in the wake of the main line of showers and
thunderstorms. Speeds could range between 20-25 kts with gusts of
up to 34 kts at times. Locally higher seas are also possible.
Thus, a Small Craft Advisory are in effect for the bays and Gulf
waters through this evening. Wind, seas, and rain chances will
dissipate tonight. Isolated showers and thunderstorms are possible
late tonight into Thursday morning, followed by drier conditions
Thursday afternoon into Saturday. Light east to southeast winds
and low seas are expected on Thursday. Light onshore flow returns
Friday and continues into early next week.

Cotto

&&

.PRELIMINARY POINT TEMPS/POPS...
College Station (CLL)  69  86  71  88 /  10  10   0   0
Houston (IAH)  72  88  73  90 /  30  30  10  10
Galveston (GLS)  76  86  78  86 /  40  20  10   0

&&

.HGX WATCHES/WARNINGS/ADVISORIES...
TX...None.
GM...Small Craft Advisory until 7 PM CDT this evening for GMZ330-350-
     370.

     Small Craft Advisory from 4 PM this afternoon to 1 AM CDT
     Thursday for GMZ335-355-375.

&&

$$

DISCUSSION...Cotto
AVIATION...Bailey
MARINE...Cotto

NWS HGX Office Area Forecast Discussion