textproduct: Houston/Galveston

KEY MESSAGES

- Look for an upper disturbance moving in from the east to trigger some scattered storms today. A few could be locally strong.

- Scattered storms are anticipated again on Sunday.

- Though isolated to scattered precipitation is expected on a daily basis during the early and mid parts of next week, overall areal coverage should be a bit less...and we'll see some warmer temperatures.

DISCUSSION

Issued at 1202 AM CDT Sat Sep 5 2026

Upper vort that was situated across eastern La on Friday will be tracking wwd into the region today...about the time we start heating up. As that occurs, we should see higher-end scattered storm coverage develop east of I-45 (and some coastal areas)...eventually spreading across parts of the rest of SE TX during the day. These storms will have more moisture to work with today compared to yday (2.4" PW'S versus ~2.2" Friday). As such, we wouldn't be surprised to see some localized higher totals in association with some of the embedded stronger cells. Let's keep an eye out across our extreme eastern counties that saw the significant rains from Edouard. With the ground saturated there, it won't take a lot to see some quick runoff and localized ponding/street flooding. We also can't rule out some 25-35mph winds where boundary collisions occur and/or storms collapse.

Precip will mostly taper down in the evening with the loss of heating, but we're looking at additional scattered storm activity redeveloping on Sunday. Better chances/coverage appears like it might be situated southwest of a Madisonville-Trinity line. Again, can't rule out some localized heavy downpours/wind gusts.

During the early-middle parts of next week, mid-upper ridge across the Southern Plains nudges a bit further south into our area. This won't prohibit the development of iso/sct diurnally driven seabreeze type activity, but overall coverage will probably be a bit less than this weekend (esp for our northern counties). Less rain coverage and clouds should also lead to some warmer temps for many areas.

Heading into the late work week, ridging retrogrades a bit further west, and we'll be keeping an eye out for another mid level easterly trof possibly making its way toward the western Gulf Coast from the east. Maybe a slight uptick in POPs warranted during that timeframe should it come to fruition. 47

AVIATION

(12Z TAF Issuance) Issued at 527 AM CDT Sat Sep 5 2026

Isolated showers have begun to develop along the coast and will become increasingly widespread throughout the morning and into the afternoon. Some of these will develop into thunderstorms, especially in the afternoon...the highest confidence window for convective impacts is generally in the 17Z-23Z timeframe. Gusty winds and reduced visibilities/ceilings will be possible in and near any storms. Outside of the convection, winds will be light and east- southeasterly to southeasterly. Convection dissipates after sunset, but isolated showers will be possible early Sunday morning with another round of scattered showers/storms in the late morning to afternoon hours. Isolated spots of patchy fog cannot be ruled out in the early morning hours, especially at CXO and LBX.

Batiste

MARINE

Issued at 1202 AM CDT Sat Sep 5 2026

Light winds and low seas will prevail for the next several days. That said mariners should be on the lookout for scattered scattered showers and thunderstorms on a daily basis as upper level disturbances pass through the region. While widespread severe storms are not anticipated, the potential is there for a few embedded stronger storms capable of producing wind gusts to 30 knots, frequent lightning, and heavy downpours. the best chances in the mornings through early afternoon. Usually in this type of pattern, rain chances are generally better offshore in the late night and morning hours, in the bays mid morning into the afternoon hours...though timing of upper disturbances could alter those at times. 47

PRELIMINARY POINT TEMPS/POPS

College Station (CLL) 95 75 95 75 / 40 30 40 0 Houston (IAH) 92 77 93 78 / 60 30 60 10 Galveston (GLS) 89 81 91 82 / 50 40 50 20

HGX WATCHES/WARNINGS/ADVISORIES

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