FXUS64 KHGX 121135
AFDHGX

Area Forecast Discussion
National Weather Service Houston/Galveston TX
635 AM CDT Tue May 12 2026

...New AVIATION...

.KEY MESSAGES...

- Warm weather expected throughout the work week. 

- Increasing clouds, humidity, and isolated rain chances over the
  weekend.

&&

.DISCUSSION...
Issued at 1211 AM CDT Tue May 12 2026

Water vapor imagery shows the mid-upper trof axis crossing over the 
Sabine and into Louisiana. As it continues its eastward progress,
the flow aloft will transition to a drier northwesterly direction
as ridging to our west gradually moves in our direction into 
midweek. Dry, mostly seasonable wx can be expected the next 
several days, though daytime highs will probably trend about 3-5F 
above norms with the lower PW air (<1") filtering in.

Heading into the late work week, surface high pressure will be 
moving off to the east and we'll see a return to a more dominate SSE 
llvl wind coming in off the Gulf. This will bring along some higher 
dewpoints/RH's, cloud cover, and warmer overnight low temps.

Mid-upper ridging weakens and tracks to our east over the weekend. A 
strengthening southerly low level flow will drive PW's back up into 
the 1.5-1.8" territory, but with the lack of significant forcing or 
weather systems in the vicinity this weekend, rain chances will 
probably be limited to some isolated diurnally driven showers or 
streamer showers. Possibly some better chances arriving late Monday 
or Tuesday in association with some weak troffiness moving across 
the Southern Plains. 47

&&

.AVIATION...
(12Z TAF Issuance)
Issued at 633 AM CDT Tue May 12 2026

VFR conditions throughout the TAF period. Light VRB winds this
morning, becoming NE at 4-8 KTS by 15Z, then back to light and 
VRB tonight through early Wed morning. 

Cotto

&&

.MARINE...
Issued at 1211 AM CDT Tue May 12 2026

Moderate northeast winds will diminish as the day progresses Tuesday 
as high pressure settles in across the area. We will probably see a 
late afternoon and evening seabreeze (SE winds). Wind regime into 
Thursday will be dominated by the landbreeze (light offshore winds 
late at night and in the mornings) and seabreeze (onshore winds in 
the afternoon and evening). A tightening pressure gradient will lead 
to increasing southerly winds and building seas heading into the 
weekend. 47

&&

.PRELIMINARY POINT TEMPS/POPS...
College Station (CLL)	  82  63  87  66 /   0   0   0   0 
Houston (IAH)			  85  67  89  69 /   0   0   0   0 
Galveston (GLS)			  82  72  84  73 /   0   0   0   0 

&&

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

$$

DISCUSSION...47
AVIATION...Cotto
MARINE...47