Marine Weather and Tide Forecast for Port Lavaca, TX

DISCUSSION
Issued at 150 AM CDT Sat Oct 17 2026

High pressure behind Friday's cold front will continue to usher drier and cooler air across S TX today, which will lead to highs in the lower 70s. Strong gusty north winds this morning along the coastline and the islands, will diminish through this afternoon, becoming light tonight. Skies are expected to clear tonight and with the dry airmass in place and light winds, efficient radiational cooling will be maximized, allowing temperatures to drop into the 50s most areas to low 60s along the coast. Light winds are forecast to gradually shift to the northeast and east on Sunday, thus beginning to usher warmer air from the gulf waters back into S TX.
Temperatures will gradually increase through the week with highs approaching the 90s by mid week.

Gale force winds across the coastal waters will diminish from west to east throughout the day. The Gale Warning is in effect until 7 AM for the bays and until 1 PM for the Coastal Waters, and will be replaced with a Small Craft Advisory for the afternoon. Winds may drop below advisory levels by late afternoon, but seas will take longer to subside, thus maintaining advisory conditions due to the seas through this evening.

Another concern continues to be the potential for coastal flooding and a high rip current risk. Due to a more north direction, the tides have not increased so far. However, winds are forecast to veer to the northeast throughout the day. The more northeast component will be more conducive for minor coastal flooding. Wind speeds will decrease but remain at 15-20 knots this evening. These northeast winds combined with swell periods of around 8 seconds will likely lead to minor coastal flooding during times of high tide this evening and overnight. The Coastal Flood Advisory remains in effect through Sunday morning. In addition, the long period swells will be conducive for a moderate to high rip current risk today and tonight.

As for any rain chances for the upcoming week, most areas will remain dry with very low chances. There are periods where there is a low chance along the Southern Coastal Bend and low to medium chance across the Coastal Waters.

AVIATION
(12Z TAFS)
Issued at 617 AM CDT Sat Oct 17 2026

VFR conditions will remain through the entirety of the cycle.
Winds are expected to remain pretty strong out of the north through the at least the early afternoon period. Winds will become lighter eventually becoming light and variable Saturday evening.

MARINE
Issued at 150 AM CDT Sat Oct 17 2026

A Gale Warning remains in effect until 7 AM this morning for the bays and until 1 PM for the coastal waters. Small Craft Advisories will replace the Gale Warning for this afternoon and evening as winds decrease from west to east. Winds may drop below advisory levels by late afternoon, but seas will take longer to subside, thus maintaining advisory conditions due to the seas through this evening.
A moderate to occasionally fresh (BF 4-5) northeast breeze will develop by Sunday, becoming easterly by mid week. Low to medium rain chances return by Monday.

FIRE WEATHER
Issued at 150 AM CDT Sat Oct 17 2026

Drier and cooler conditions are expected through the weekend. The ERC is forecast to increase to the 75-89th percentile and the fuel dryness levels are expected to become dry to critically dry through the weekend leading to elevated fire weather concerns. However, winds will be light helping to lower the fire weather threat. As winds become more easterly, minimum RH values increase through the work week.

PRELIMINARY POINT TEMPS/POPS
Corpus Christi 73 56 77 61 / 0 0 0 0 Victoria 74 51 77 54 / 0 0 0 0 Laredo 72 53 77 59 / 0 0 0 0 Alice 73 53 77 58 / 0 0 0 0 Rockport 75 60 78 65 / 0 0 0 0 Cotulla 72 51 76 57 / 0 0 0 0 Kingsville 72 54 77 59 / 0 0 0 0 Navy Corpus 73 63 76 68 / 0 0 0 0

CRP WATCHES/WARNINGS/ADVISORIES
TX...Wind Advisory until 7 AM CDT this morning for TXZ245-342>344-346- 347.

High Rip Current Risk through this evening for TXZ345-442-443- 447.

Wind Advisory until 1 PM CDT this afternoon for TXZ345-442-443- 447.

Coastal Flood Advisory until 7 AM CDT Sunday for TXZ345-442-443- 447.

GM...Gale Warning until 7 AM CDT this morning for GMZ231-232-236-237.

Small Craft Advisory until 1 PM CDT this afternoon for GMZ231- 232-236-237.

Gale Warning until 1 PM CDT this afternoon for GMZ250-255-270- 275.

Small Craft Advisory from 1 PM this afternoon to 1 AM CDT Sunday for GMZ250-255-270-275.