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National Weather Service Forecast Discussion

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273
FXUS64 KHGX 051836
AFDHGX

Area Forecast Discussion
National Weather Service Houston/Galveston TX
Issued by National Weather Service Lake Charles LA
136 PM CDT Wed Aug 5 2026

...New DISCUSSION, MARINE...

.KEY MESSAGES...

- Seasonably hot with highs in the 90s and heat index values
  100-107F each day.

- An isolated late day shower can`t be ruled out along the
  seabreeze in the afternoons.

- Slightly better rain chances expected Thursday into early next
  week for the eastern and southern parts of the region as some
  deeper moisture flows back inland.

&&

.DISCUSSION...
Issued at 103 PM CDT Wed Aug 5 2026

With exception to some light showers in the coastal counties,
conditions across the forecast area are dry (rain wise) and warm.
We could see some isolated to scattered showers and storms across
parts of the area this afternoon, and for the next few afternoons
during the work week; however, the ridge aloft centered over the
Desert SW will keep a lid on this activity.

Going into the weekend and early next week, the aforementioned
ridge will shift more to the west, slightly losing its grip over
the eastern and coastal counties. That along with a small bump up
in PWATs, and diurnal / seabreeze processes will allow for
somewhat higher PoPs in the afternoons.

MaxTs for nearly the entire duration of this forecast period will
be at or around their climatological normals for this time of
year. With that said and with dewpoints in the 70s, we are not
looking at heat indices crossing into heat hazard territory.

&&

.AVIATION...
(12Z TAF Issuance)
Issued at 557 AM CDT Wed Aug 5 2026

Current satellite imagery depicts MVFR/IFR ceilings developing
over areas along and west of the Brazos River. These reduced
ceilings are anticipated to move into CLL and UTS over the next
couple of hours and may extend into CXO and IAH as well later this
morning. Additionally, periods of patchy fog have brought reduced
visibility to LBX as well. Based on yesterday, SGR may also experience
reduced visibility for a few hours around and shortly after
sunrise.

VFR conditions will return area-wide by 15Z. Light south-southwest
winds early this morning will become southerly by the afternoon
with wind speeds in the 8-12 kt range. Occasional gusts of 15-20
kt will be possible through the afternoon. Isolated SH/TS
possible again this afternoon between 21Z-01Z mainly around the
Houston metro terminals. Winds become light and variable
overnight with potential for another round of patchy fog and
reduced ceilings mainly west of I-45 going into Thursday morning.
Ceilings/visibilities improve back to VFR by 15Z on Thursday with
south to southeast winds around 8-12 kt prevailing. Another round
of isolated to scattered SH/TS possible in the afternoon.

Batiste

&&

.MARINE...
Issued at 103 PM CDT Wed Aug 5 2026

Winds and seas will be relatively low in the 10 to 15 kt range and
2 to 4 ft range respectively. A stray shower or two cannot be
ruled out during the afternoons, with convective activity more
likely towards the end of this work week and into next week.

&&

.PRELIMINARY POINT TEMPS/POPS...
College Station (CLL)  77  96  76  95 /   0  10   0  10
Houston (IAH)  79  96  78  95 /  20  30  10  30
Galveston (GLS)  83  91  83  90 /   0  20  10  20

&&

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

$$

DISCUSSION...WFO LCH
AVIATION...Batiste
MARINE...WFO LCH

NWS HGX Office Area Forecast Discussion