textproduct: Houston/Galveston

KEY MESSAGES

- A strong heat dome over the Southwest will keep conditions dry, with temperatures well-above average through the next several days. - Persistent southerly flow could lead to the development of fog and low clouds for the next several nights.

DISCUSSION

Issued at 1113 AM CDT Sun Mar 22 2026

Main story the next week with be the unseasonably warm and humid conditions as strong upper level ridging remains in place, and moist southerly flow continues at the surface. The ridge of high pressure will remain over the Desert Southwest through midweek, then become centered over the the Southern Plains through the second half of the week. NAEFS Percentiles for the strength of this ridge of high pressure is > 99th percentile all week long, which will aid in the summer-like weather we will be experiencing. High temperatures will be in the mid to upper 80s for most inland locations (around 10-15 degrees above normal) through the week with areas along the immediate coast in the mid to upper 70s. The one exception will be on Monday as a weak cold front slides in from the north and stalls somewhere within SE Texas. Most CAM guidance has it stalling between Huntsville and Conroe, allowing for some cooler temperatures (highs in the low 80s) to filter into the Piney Woods and parts of the Brazos Valley, while areas along and south of I-10 will continue to see highs in the mid to upper 80s. If this front does slide further south before stalling, then those cooler conditions will follow, but even the most southern solution still keeps the front stalled north of the Houston Metro. This front quickly retreats back to the north by Tuesday. There does appear to be some relief towards next weekend as a cold front pushes through the region, potentially bringing us back down closer to seasonal temperatures. However, almost half of the ensemble suite keep temperatures at IAH > 84 degrees next Sunday, so it remains possible that this front ends up stalling north of our area - again.

Patchy to areas of fog will be possible nightly through the next few night thanks to the onshore flow bringing increased moisture to the region. Greatest coverage of the fog will likely be along and south of I-10 between 4-7am.

Fowler

AVIATION

(00Z TAF Issuance) Issued at 813 PM CDT Sun Mar 22 2026

Conditions will gradually deteriorate overnight with low clouds and reduced visibility due to patchy fog. MVFR to IFR ceilings will begin to develop mainly after midnight, with the lowest ceilings occurring near or after sunrise. Although all terminals will be impacted to some degree, the highest probabilities for IFR (and occasional LIFR) are for the KCXO, KIAH, KSGR, KHOU terminals through early to mid Monday morning. Improvements are expected after mid/late morning, followed by VFR conditions and light southerly winds through the remainder of the TAF period.

JM

MARINE

Issued at 1113 AM CDT Sun Mar 22 2026

Light onshore flow (generally 5-10kt with occasional gusts to 15kt) and low seas (1-3ft) will prevail through this week. There will be a slight chance of fog in the Bays through at least midweek nightly, especially in the northern parts of the Bays where inland fog spills over into the waters. Any fog that develops will quickly dissipate through the morning hours.

Fowler

PRELIMINARY POINT TEMPS/POPS

College Station (CLL) 60 84 60 87 / 0 0 0 0 Houston (IAH) 63 86 65 87 / 0 0 0 0 Galveston (GLS) 67 78 67 77 / 0 0 0 0

HGX WATCHES/WARNINGS/ADVISORIES

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