textproduct: Houston/Galveston

KEY MESSAGES

- High pressure will strengthen through the weekend, reducing chances of rain to near zero well into next week.

- Slightly above average summertime heat (upper 90s/lower 100s) will persist through most of the rest of the month across Southeast Texas. The potential for Heat Advisory issuance remains elevated as a result.

- Without adequate precautions outdoors, cumulative impacts of heat and heat stress will remain a significant risk factor to health (especially for heat-sensitive populations).

DISCUSSION

Issued at 101 PM CDT Sun Aug 16 2026

Persistent dry and hot weather will continue through the work week as a ridge continues to ease westward into the state. Daily high temperatures will be in the upper 80s along the coast and in the 90s to around 100F for inland areas (highest probability of triple digit temperatures exists in the Brazos Valley and Piney Woods. Nighttime lows will be in the mid 70s to low 80s.

Opted to hold off on a Heat Advisory for tomorrow. While temperatures will be hot, decent mixing and dew points in the 60s to low 70s may keep heat indices below advisory levels. Will need to continue to monitor through the week as high pressure continues to build in over the area. Nonetheless, dangerously hot conditions are expected through the week, particularly for those who are outside for extended periods of time.

Once we get past midweek, the high will become centered over the Four Corners region, which will place us in NW flow aloft. As this happens, an upper level trough is expected to slide through the Mississippi River Valley and eject an associated frontal boundary this weekend. At this time it looks as though the front stops just outside of SE Texas; however, it may be in close enough proximity to trigger a southward progression of convection later this week/next weekend.

With hot conditions persisting over the next several days, please continue to keep heat safety at the top of your minds for any plans that you make (especially if outdoors). Know the signs of heat- related illnesses, stay hydrated (with water), take frequent breaks from the heat, wear loose/light-colored clothing and sunscreen, and ALWAYS ALWAYS ALWAYS LOOK before you LOCK your vehicle. Don't forget about your pets as well! If the ground is too hot for the palm of your hand, then it is too hot for their paws.

Bailey

AVIATION

(18Z TAF Issuance) Issued at 1241 PM CDT Sun Aug 16 2026

Dry air continues to allow for VFR conditions to persist throughout the day and into the evening. Winds remain out of the SSE before becoming light and VRB overnight. This accommodates the development of morning BR/FG to reduce conditions to MVFR/IFR around KCXO and KLBX. Anticipate a similar environment as today with CIG's rising to VFR once again tomorrow mid-morning as a brief WSW breeze evolves. As the afternoon arrives winds will shift back to SSE.

CMW

MARINE

Issued at 101 PM CDT Sun Aug 16 2026

A period of benign marine conditions continues with light to occasionally moderate southerly/southwesterly winds and 2-3 ft seas prevailing over the next several days.

Batiste/Bailey

PRELIMINARY POINT TEMPS/POPS

College Station (CLL) 75 100 76 99 / 0 0 0 0 Houston (IAH) 78 99 79 99 / 0 0 0 10 Galveston (GLS) 82 90 83 91 / 0 0 0 0

HGX WATCHES/WARNINGS/ADVISORIES

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