Area Forecast Discussion
Issued by NWS Houston/Galveston, TX

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226
FXUS64 KHGX 020526
AFDHGX

Area Forecast Discussion
National Weather Service Houston/Galveston TX
1226 AM CDT Wed Jul 2 2025

...New DISCUSSION, MARINE...

.KEY MESSAGES...
Issued at 1259 PM CDT Tue Jul 1 2025

- Isolated showers and storms possible through Thursday, mainly
  west of I-45.
- A thin plume of Saharan dust remains over SE TX, resulting in
  hazy skies.
- Hot and dry conditions are expected for the 4th of July and into
  the holiday weekend.
- Heat index values up to 107F are expected this week and into the
  weekend. Remember to practice proper heat safety.

&&

.DISCUSSION...
Issued at 1225 AM CDT Wed Jul 2 2025

Latest satellite imagery and mesoanalysis show the mid-level ridge
building over our region while remnants of Barry continue to move
across the South/Central Texas. Locally, the influence of the ridge
is bringing a drier airmass that will persist through the rest of
the week. In fact, part of this dry airmass is due to Saharan dust
that will remain over us through at least late Wednesday. This is a
thin layer of dust; therefore, minimal impacts are expected other
than some hazy skies. Despite a drier airmass over us, we cannot
rule out a few showers and storms on Wednesday and Thursday.
Moderate PWs remain over the region with values into the 1.5 to 1.7
inch range, which is close to the daily mean of climatology.
Therefore, an isolated storm or two will be possible, especially in
the afternoon with the combination of peak daytime heating and
sea/bay breezes. The best rain/storm chances will be across our
southwestern counties/areas west of I-45. Hot conditions and low
rain chances will continue through the holiday weekend.

Ridging aloft also means hotter conditions. 850mb temperatures show
values into the 18 to 22 degC, suggesting surface highs in the mid
to upper 90s. With south to southeasterly surface flow bringing
warmer and more humid Gulf air, afternoon heat index reaching up to
107F can be expected through the weekend. With the holiday weekend
coming up, remember to practice proper heat safety by staying
hydrated, staying cool (taking breaks in A/C), and wearing light-
colored clothes. Please, don`t forget to check on kids, the elderly,
and pets.

Ridge aloft weakens/shifts to the west early next week as a sfc
trough develops across the northwestern Gulf. This pattern will
bring back increasing rain and storm chances early next week.

JM

&&

.AVIATION...
(00Z TAF Issuance)
Issued at 604 PM CDT Tue Jul 1 2025

Despite the dry air, a lone thunderstorm was able to develop just
north of the Ship Channel that slowly drifted towards IAH this
afternoon. Luckily the storm has rained itself out before
reaching the terminal itself, so will take VCTS mention out of the
IAH TAF.

VFR conditions will prevail through this evening, then some patchy
fog late tonight through the early morning hours on Wednesday will
develop for areas generally north of I-10 bringing periods of MVFR
conditions. Fog will dissipate within an hour or two after sunrise
with VFR conditions then prevailing through the rest of the day.
Light, variable winds are expected through Wednesday morning
becoming more predominately southerly Wednesday afternoon.

Fowler

&&

.MARINE...
Issued at 1225 AM CDT Wed Jul 2 2025

Surface high pressure to our east continues to bring light onshore
winds and low seas early this week. Drier and hot conditions are
anticipated through the week with only a few storms possible through
Thursday. Rain and storm chances increase late Sunday into early
next week as a disturbance moves through the region. Hazy skies due
to Saharan dust remains over the region at least through late
Wednesday, before returning into the area early this weekend.

Beach conditions: Use caution heading to the beach as a moderate
risk of rip currents along all Gulf-facing beaches continues through
Saturday. Always swim near a lifeguard and avoid swimming near piers
and jetties.

JM

&&

.PRELIMINARY POINT TEMPS/POPS...
College Station (CLL)  95  75  93  75 /  10   0  20  10
Houston (IAH)  96  77  94  77 /  10   0  20   0
Galveston (GLS)  90  81  89  82 /  10   0  10   0

&&

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

&&

$$