textproduct: Houston/Galveston

KEY MESSAGES

- Scattered to occasionally numerous showers/storms expected again today. Portions of the area are in a Slight Risk (level 2 of 4) of Excessive Rainfall.

- In addition to some localized heavy downpours, some 25-45mph wind gusts are possible in the isolated stronger cells.

- Higher pressure nudges into the region from the east later in the work week bringing a return to a more typical summertime weather pattern.

DISCUSSION

Issued at 1218 AM CDT Wed Jul 15 2026

Another day with elevated shower and thunderstorm activity is expected with a mid/upper trof rotating around cntl Tx. Highest PW's should be situated along and south of the I-10 corridor, esp near the Matagorda Bay area and lowest (but still respectable) across the Piney Woods. Combination of some weak llvl convergence near the coast should get some sct activity started toward morning- eventually expanding further NE/inland as the day progresses compliments of daytime heating and weak vort lobes rotating about. There is a slight risk, level 2 of 4, of excessive rainfall across most of the region. Overall, widespread flood issues should be on the low side...but folks that have seen the 3-5"+ over the past few days will be the most prone to quick runoffs and street flooding in any of the heavier downpours. With the column not quite as saturated as it was yesterday, I wouldn't be too surprised to see some 25-45mph gusts in some of those more intense cells as well.

Higher pressure to the east should nudge the Texas trof a bit further westward Thurs & Fri. Corresponding chances of rain should also decline on a day-to-day basis as this occurs heading into the weekend. Not that it'll go to zero, but we should gradually return to more of a typical summertime pattern with more sun, highs back up closer to the mid 90s, and iso-sct diurnally driven precip. 47

AVIATION

(12Z TAF Issuance) Issued at 624 AM CDT Wed Jul 15 2026

SHRA/TSRA have develop this morning near LBX, GLS, LVJ, and HOU. These will generally remain near these sites for the next couple hours then spread northward through the rest of the terminals through the day. After 21-22z, a few lingering SHRA and maybe a TSRA remains possible through 02z. VFR conditions are expected thereafter, though CLL may see MVFR cigs after 10z.

MARINE

Issued at 1218 AM CDT Wed Jul 15 2026

Light to occasionally moderate onshore winds and 2 to 4 foot seas prevail for the next several days. Speeds and seas could be a touch higher in the overnight hours with a slightly tighter pressure gradient setting up. Otherwise, another day or two of elevated storm chances are on tap before things trend back to a more typical summertime pattern heading into late week. Widespread severe weather is not anticipated, though winds and seas will be higher in and near any isolated more intense cells. 47

PRELIMINARY POINT TEMPS/POPS

College Station (CLL) 84 72 88 74 / 60 20 40 20 Houston (IAH) 86 75 90 78 / 60 20 40 0 Galveston (GLS) 88 83 90 84 / 40 10 20 10

HGX WATCHES/WARNINGS/ADVISORIES

TX...None. GM...None.