textproduct: Houston/Galveston

KEY MESSAGES

- Hot conditions will continue this week, with potential for heat stress issues as heat indices approach 105-107F (41-42C) each day and WBGT risk peaks in the red category.

DISCUSSION

Issued at 1210 AM CDT Wed Jun 24 2026

Seasonably strong H5 ridging, centered in the vicinity of far west Texas/NE Mexico, is evident on WV imagery this evening. Although a few convecitvely-enhanced disturbances are currently pivoting southeastward along its northern periphery these will track east of the area. The aforementioned ridge will gradually shift east of the area later this week, with an amplified eastern US ridge/west coast trough pattern taking shape for early next week. The subsident influence of the ridge and associated dry air (PWATs generally running in the 25th-33rd percentiles) will keep rain chances very low, generally 5 percent or less, through early next week.

Naturally given the time of year and limited rain chances/cloud cover, hot temperatures can be expected through the period with highs in the mid 90s and peak heat indices between 102 and 107 degrees. Although it would appear that we will largely remain below heat advisory criteria, we will likely get quite close at times, particularly early next week as a SAL plume reaches the area. Additionally the combination of relatively light winds (particularly inland), the high June sun angle, and the aforementioned high heat/humidity will result in peak max WBGT values in the high (red) risk category each afternoon.

AVIATION

(12Z TAF Issuance) Issued at 522 AM CDT Wed Jun 24 2026

Some MVFR CIGS have filled in early today, generally in areas north/northwest of KIAH, with brief IFR CIGS/decks around KCLL. FLs should improve after sunrise with CIGS scattering/lifting back to VFR conditions. Winds veer south to southwest during the daytime, then become light and variable in the evening after sunset. Another short round of MVFR CIGS may develop again early Thursday morning, generally in that same areas north/northwest of the Houston metro area. The diurnal cycle should continue with those CIGS clearing out later in the morning.

03

MARINE

Issued at 1210 AM CDT Wed Jun 24 2026

Gentle to moderate southerly flow will prevail through the workweek with periods of fresh southerly winds expected this weekend. Seas will generally run 2 to 4 ft through the workweek increasing to 3 to 5 ft into the weekend.

PRELIMINARY POINT TEMPS/POPS

College Station (CLL) 94 73 94 76 / 0 0 0 0 Houston (IAH) 94 75 93 77 / 0 0 0 0 Galveston (GLS) 88 81 88 82 / 0 0 0 0

HGX WATCHES/WARNINGS/ADVISORIES

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