textproduct: Houston/Galveston

KEY MESSAGES

- Increasing heat risk with "feels-like" temperatures around 97-107 degrees (36-42 Celsius) through at least this weekend.

- Rip Current Statement in effect through Friday morning for Gulf- facing beaches. Rip Risk is likely to continue into next week.

- Isolated/scattered showers and thunderstorm chances daily, mostly during the afternoon hours. Chances will increase Sunday into next week.

DISCUSSION

Issued at 1148 PM CDT Wed Jun 10 2026

Immediate term remains, by in large, a persistence forecast as a result of subtropical ridging aloft with firm onshore flow from a Bermuda high off the eastern sea board. Heights within the midlevel ridge aloft are still forecast to be around 590-593 dam, which is around the 77-95th climatological percentile for this time of the year. NAEFS shows 200mb mean geopotential heights to be around the 97-99th percentile, generally highest on Saturday and portions of Sunday. Subsidence from this robust ridging aloft should continue to inhibit storm development throughout these next several days. That being said, ample PWs of 1.4-2.3 inches and afternoon heating should still keep some minor rain chances in the forecast, likely manifesting as brief sporadic showers, especially during the early morning and afternoon. May see some sea breeze showers/storms develop at times as well, though HRRR PBL heights doesn't indicate much in the way of sea breeze driven activity for Thursday. Greater rain chances are still poised to return around Sunday. Highs are forecasted to reach the upper 80s to mid 90s (31-36 Celsius) with lows in the 70s to lower 80s (21-27 Celsius). Afternoon dewpoints are still anticipated to remain in the 70s (20-26 Celsius) each day, lower 70s at best with strong mixing. As a result, heat indices and "feels-like" temperatures are forecasted to reach 97-107 degrees (36- 42 Celsius) over these next few days. WBGT Heat stress is forecasted to be high with each day as well. Sensitive groups or those not acclimated to the summer like weather of Houston are still at a greater risk of experiencing heat illness. Still won't rule out the potential for heat advisories, especially this weekend given the surplus of unacclimated individuals in the Houston area. If you plan to spend time outdoors, again, make sure to drink plenty of water to stay hydrated.

If you have any beach plans within the next 7 days, make sure to watch out for rip currents. Swim near a lifeguard, if possible, and be sure to avoid swimming near any rocks, jetties, and piers where rip currents frequently occur.

We're still expected a pattern change Sunday into next week, as a mid/upper level trough digs into the Plains. This feature should shove the subtropical ridge further south, lowering heights over SE Texas. In addition, this feature is also progged to push a cold front towards SE Texas by around. LREF isn't stowing a strong signal of northerly flow at the surface for KGLS, thus the chances of this front clearing the coast does not appear to be all that high. More likely than not, it will stall out somewhere upstream, such as in the GFS, which currently has the front stalling just before reaching the coastline. Still, this front will help invigorate the development of scattered showers/storms throughout Tuesday, into Wednesday as well as the front subsequently lifts. Broadly, anticipate declining temperatures/heat stress and rising rain chances for the first half of next week.

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AVIATION

(00Z TAF Issuance) Issued at 610 PM CDT Wed Jun 10 2026

VFR conditions currently across SE TX sites along with SE winds at 07-13 KTS with occasional gusts up to 20 KTS. A llvl jet of around 25 KTS will build overhead overnight and may keep winds near 10 KTS instead of relaxing to below 5 KTS. MVFR cigs are expected to return late tonight into Thu morning, gradually lifting after 15Z. For Thu, mostly VFR conditions are expected along with S-SE winds between 08-14 KTS with occasional gusts of around 20 KTS, in particular during the afternoon hours. We could see some iso showers pass through during the day, but chances are low (less than 10%).

Cotto

MARINE

Issued at 1148 PM CDT Wed Jun 10 2026

Light to occasionally moderate onshore winds are expected throughout the rest of the work week with seas of 2 to 5 feet. Caution flags are in effect overnight through early Thursday due to elevated winds across the bays and nearshore waters. Additional caution flags may be warranted at times over the next few days, especially this weekend as seas near 6 to 7 feet offshore. Isolated showers and thunderstorms will be possible each day with rain chances rising over the weekend into early next week. A high risk of rip currents is anticipated almost daily for the foreseeable future.

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PRELIMINARY POINT TEMPS/POPS

College Station (CLL) 90 77 93 77 / 20 20 20 20 Houston (IAH) 91 78 92 78 / 10 10 20 10 Galveston (GLS) 87 82 88 82 / 20 20 20 10

HGX WATCHES/WARNINGS/ADVISORIES

TX...High Rip Current Risk through Friday morning for TXZ436>439.

GM...Small Craft Should Exercise Caution until 7 AM CDT Thursday for GMZ330-335-350-355.