FXUS64 KHGX 111800
AFDHGX

Area Forecast Discussion
National Weather Service Houston/Galveston TX
100 PM CDT Tue Aug 11 2026

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

.KEY MESSAGES...

- Scattered showers and thunderstorms will come to an end this
  evening with the loss of daytime heating.

- Seasonably hot weather continues through the weekend.

- Cannot rule out an isolated seabreeze shower or thunderstorm
  each day, but most locations will probably be rain free. 

&&

.DISCUSSION...
Issued at 100 PM CDT Tue Aug 11 2026

Remnant weak vort lobe near the Brazos Valley, daytime heating,
seabreeze, and 2" PW's are allowing for some scattered shower and
thunderstorm activity to get going this afternoon. This precip
will taper off toward early evening with the loss of heating.  

Ridging, both in the lower and upper levels situated across the NE
parts of the Gulf will very slowly track and expand westward for 
the remainder of the week and weekend. With building heights come 
slightly warmer conditions...but just back into the "seasonably 
August hot" territory. Good news is we should see some increased 
wind speeds to partially mitigate those readings in the mid and 
upper 90s Wed-Fri. 

In terms of rain chances, slightly lower PW air is forecast to 
move into the area Wednesday so we should see lower (but not nil) 
shra/tstm chances and less areal coverage compared to what we saw 
Monday and today. Atmosphere appears even drier Thursday. We'll
remain within a corridor of southerly winds off the Gulf, and
minor fluctuations of moisture availability will drive any diurnally
driven seabreeze POPs into the weekend. That said, we're still 
only talking <30% chances...so most of us will probably remain 
dry.  47 

&&

.AVIATION...
(18Z TAF Issuance)
Issued at 100 PM CDT Tue Aug 11 2026

Any lingering MVFR CIGS from earlier this morning will continue 
to scatter out. Winds this afternoon of 8-12KT are generally out 
of the S-WSW and gust up to 15- 20KT. Sustained winds and gusts 
should relax later this afternoon after the seabreeze passes 
through, and turn to the SSE this evening. Scattered afternoon 
showers/storms will taper off toward early evening. As for CIGS, 
an MVFR deck is expected to build in north of I-10 early tomorrow 
morning. There is some uncertainty in how far south this deck will
extend; as of now, MVFR CIGS are included at KCXO and northward. 
This MVFR deck is expected to scatter out by mid morning tomorrow.

MLG

&&

.MARINE...
Issued at 100 PM CDT Tue Aug 11 2026

A prevailing southerly flow will continue for the next several 
days. Wind speeds should increase Wednesday night into Friday as 
the pressure gradient tightens and allow for seas to build into 
the 3 to 5 foot range. Caution flags may be needed at times. As 
higher pressure builds into the region from the east, winds and 
seas should diminish this weekend.  47

&&

.PRELIMINARY POINT TEMPS/POPS...
College Station (CLL)	  76  98  77  99 /  10   0   0   0 
Houston (IAH)			  79  97  79  97 /  20  10   0   0 
Galveston (GLS)			  84  91  84  91 /  10  10   0   0 

&&

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

&&

$$

DISCUSSION...47
AVIATION...MLG
MARINE...47