textproduct: Houston/Galveston

KEY MESSAGES

- Mid-level high pressure will keep conditions dry and temperatures well-above normal over the next several days. - Persistent southerly flow will lead to the development of patchy to areas of fog (some locally dense) and low clouds over the next several nights.

- Cooler temperatures are possible over the weekend with the passage of a dry cold front.

DISCUSSION

Issued at 209 PM CDT Tue Mar 24 2026

The fairly robust ridge that has been placed over western CONUS the last couple days looks to gradually move eastward, directly above the Southern Plains, over the next week. This will lead to persistent conditions over the next several days as large scale subsidence remains locked in keeping PoPs near nil. Diurnal heating each day will lead to sea breeze development that will push low level moisture inland. This moisture then condenses overnight as temperatures drop and becomes patchy to areas of fog during the morning hours. Fog then dissipates throughout the mid to late morning... A wash, rinse, repeat pattern until a mid-level perturbation rides over the top of the ridge and sends a dry backdoor cold front into SE TX this weekend. This will change the low level flow from being east-southeasterly to northeasterly. In the cold front's wake a drop in moisture, indicated by dew points in the 40s and 50s this weekend, will lead to pleasant conditions with cooler temps in the upper 70s to mid 80s. By early next week the pattern flips back and southerly flow returns leading to another warming, and potentially foggy, trend.

AVIATION

(18Z TAF Issuance) Issued at 1251 PM CDT Tue Mar 24 2026

Conditions across the region have returned to VFR as SCT clouds prevail. These conditions are expected to continue until late this evening when winds begin to gradually decrease into the overnight period. Model guidance isn't incredibly confident in widespread fog tanking vsbys, but with onshore flow being stronger later this afternoon when compared to yesterday, there may be enough moisture in the region to drop vsbys to IFR and/or LIFR at terminals closer to the coast. Otherwise, cigs are expected to drop to IFR across the region overnight. After sunrise, conditions gradually improve with MVFR to VFR expected again by the late morning into the afternoon.

MARINE

Issued at 209 PM CDT Tue Mar 24 2026

Light to moderate south-southeast winds and seas of up to 3 feet expected through the rest of the week. Areas of patchy sea fog are possible over the bays and adjacent nearshore waters during the next few days generally between the evening to mid-morning hours. A dry cold front could push through Southeast TX sometime late Friday or early Saturday, resulting in moderate to strong east northeast winds and elevated seas in the wake of the front. Caution Flags and Small Craft Advisories may be needed Friday night into Saturday. Conditions should improve on Sunday.

PRELIMINARY POINT TEMPS/POPS

College Station (CLL) 64 87 62 87 / 0 0 0 0 Houston (IAH) 66 86 64 85 / 0 0 0 0 Galveston (GLS) 67 76 67 75 / 0 0 0 0

HGX WATCHES/WARNINGS/ADVISORIES

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