textproduct: Houston/Galveston

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

(00Z TAF Issuance) Issued at 607 PM CDT Tue Aug 11 2026

Lingering isolated shra/tsra will quickly dissipate this evening as we lose daytime heating. Winds overnight become light, with some MVFR cigs developing in our northern zones by early morning. Southerly winds are expected to be gustier on Thursday, possibly gusting over 20 knots. Winds may become more southeasterly in by late Thursday afternoon.

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) 77 97 77 98 / 20 10 10 0 Houston (IAH) 79 96 79 96 / 20 20 10 20 Galveston (GLS) 83 91 84 90 / 20 20 0 0

HGX WATCHES/WARNINGS/ADVISORIES

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