textproduct: Houston/Galveston

KEY MESSAGES

- Seasonably hot conditions will continue today as daytime highs will be in the mid 90s with heat indices reaching the triple digits.

- Lower chances of rain today. Isolated to scattered seabreeze showers and thunderstorms are possible closer to the coast.

- Deep Gulf moisture will arrive Friday morning causing rain chances to increase Friday and into next week.

DISCUSSION

Issued at 1229 AM CDT Thu Jul 9 2026

This morning, a mid level trough lingers over the southeast part of Texas. This trough will continue to interact with the routine summertime sea breeze. Isolated showers and thunderstorms are possible; however, there will likely be lower overall coverage than we saw on Wednesday due to a decrease in moisture with drier air situated behind the trough axis. Daytime highs will be in the mid 90s with 20-30% chance of rain along and south of I-10...lower further inland.

Tonight, remnant showers and storms will begin to die off as the area begins to cool. Overnight temperatures will be in the upper 70s with S/SE winds.

Friday and into the weekend, an inverted trough will track westward and inland across Mexico and the Southern Texas coast. South to southeasterly flow will continue and deeper moisture will return. This surge of higher moisture will likely allow for scattered coastal showers/storms in the mornings, transitioning inland during the day. With PW's in the 2.1-2.4" range throughout the weekend into early next week, rain chances increase to 30-70%. There's no significant focusing mechanisms in terms of a widespread flooding potential, but cannot rule out some localized heavy downpours from time-to-time considering the tropical airmass.

Heading into the early and middle parts of next week, an expansive mid level ridge will take shape across the cntl US. We'll be on its southern periphery and subject to a parade of westward moving disturbances tracking westward underneath it...with continued daily chances of rainfall.

Seasonal summer heat continues as maximum temperatures will be in the mid to upper 90s today and heat index values ranging from 100-106F over the weekend. Vulnerable populations should take proper safety precautions by wearing light weight clothing, drinking plenty of water, and taking frequent breaks. With the increase in clouds and periodic rainfall, readings will likely taper down closer to near normal this weekend and next week, or even slightly below normal on the higher coverage rain days.

LDavis/47

AVIATION

(12Z TAF Issuance) Issued at 634 AM CDT Thu Jul 9 2026

Latest satellite and radar imagery show generally quiet conditions across the forecast area, with VFR prevailing at most TAF sites. Patchy fog is on going across the region with KCXO briefly dropping down to IFR conditions. A couple of ASOS stations across the region show MVFR conditions as well. That said, most sites around the region remain at or above 7 mils this morning. Still kept the possibility for some visibilities down to 6 miles for a few sites this morning, with KCXO reflecting MVFR conditions.

A SAL intrusion is expected today, which should put a lid on shower and thunderstorm potential this afternoon and evening. However, some isolated showers and thunderstorms along the sea breeze can not be ruled out. Winds look to remain light to gentle out of the SW/S through tonight. Convective Allowing Models are starting to show a cloud deck building in towards the end of IAH's 12z TAF period. It is too early to tell if cigs will support MVFR conditions, but an increase in sky conditions appears likely over the next couple of TAF cycles.

MARINE

Issued at 1229 AM CDT Thu Jul 9 2026

With a fairly long fetch of onshore winds in the 12-17kt range setting up in the coming days and through the weekend, we should see the current 2 foot seas bump up a bit...closer to 3-4ft. Rain chances increase Friday into early next week as deeper tropical moisture moves into the area. Mariners should anticipate scattered, to occasionally numerous, showers/tstms during the late night through early afternoon hours on a daily basis. Winds and seas will be higher in and near any stronger storms. 47

PRELIMINARY POINT TEMPS/POPS

College Station (CLL) 97 76 95 78 / 10 10 20 10 Houston (IAH) 96 79 94 79 / 30 10 30 20 Galveston (GLS) 90 84 90 85 / 10 20 30 30

HGX WATCHES/WARNINGS/ADVISORIES

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