textproduct: Houston/Galveston

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.