Marine Weather and Tide Forecast for Port Lavaca, TX

DISCUSSION
Issued at 611 AM CDT Mon Apr 13 2026

Mid-level flow remains mainly southwesterly, particularly across central and western states through much of the forecast period.
Accompanied by subsidence and quieter weather.

As rain chances taper off today some localized areas over the northern Brush Country may see chances linger through midweek.
Meanwhile, a trough lifts northeast across the Plains, sending a cold front across the region this upcoming weekend. Likely bringing cooler temperatures and increased rain chances along with it. Will have to keep an eye out for any marine hazards and fire weather due to increased winds associated with this front but we have plenty of time being this far out.

90s are likely to return to the forecast today followed by mid-90s by around Thursday across the western half of the region with low to mid 80s elsewhere. Highs next Sunday are currently progged to be in the 70s but there's a lot of time for the forecast to change based on how things evolve between now and then.

A Moderate rip current risk and potential minor coastal flooding to continue this workweek with a moderate to fresh onshore flow, swell periods around 6-8 seconds, 4-6 foot wave heights and astronomical tides being a contributing factor as we approach a new moon on April 17th and not surprisingly water levels trend upward. Water yesterday reached the dunes with higher swell heights and periods. Again will let the day shift handle issuing a Coastal Flood Advisory (if necessary).

DISCUSSION
Issued at 156 AM CDT Mon Apr 13 2026

Mid-level flow remains mainly southwesterly, particularly across central and western states through much of the forecast period.
Accompanied by subsidence and quieter weather.

As rain chances taper off today some localized areas over the northern Brush Country may see chances linger through midweek.
Meanwhile, a trough lifts northeast across the Plains, sending a cold front across the region this upcoming weekend. Likely bringing cooler temperatures and increased rain chances along with it. Will have to keep an eye out for any marine hazards and fire weather due to increased winds associated with this front but we have plenty of time being this far out.

90s are likely to return to the forecast today followed by mid-90s by around Thursday across the western half of the region with low to mid 80s elsewhere. Highs next Sunday are currently progged to be in the 70s but there's a lot of time for the forecast to change based on how things evolve between now and then.

A Moderate rip current risk and potential minor coastal flooding to continue this workweek with a moderate to fresh onshore flow, swell periods around 6-8 seconds, 4-6 foot wave heights and astronomical tides being a contributing factor as we approach a new moon on April 17th and not surprisingly water levels trend upward. Water yesterday reached the dunes with higher swell heights and periods. Again will let the day shift handle issuing a Coastal Flood Advisory (if necessary).

AVIATION
(12Z TAFS)
Issued at 611 AM CDT Mon Apr 13 2026

A mix of MVFR to VFR conditions can be expected early this morning (a few sites could briefly drop to IFR) with all sites returning to VFR by 14-16z tomorrow morning. Gusty winds are expected to return tomorrow with winds decreasing shortly after sunset.
Another round of MVFR ceilings are expected to redevelop tonight around 04-06z.



MARINE
Issued at 156 AM CDT Mon Apr 13 2026

A Moderate to Fresh (BF 4-5) onshore flow will persist through the week. Flow is expected to back northeasterly early Sunday followed by an increase to a Fresh to possibly Strong flow in response to a cold front. Low Shower chances (<~15%) taper off today through the end of the workweek but increase sometime this upcoming weekend as the cold front moves offshore.

FIRE WEATHER
Issued at 156 AM CDT Mon Apr 13 2026

Low rain/thunderstorm chances across the region continue to taper off through Monday morning replaced by drier conditions through the end of the workweek. Although some isolated areas across the northern Brush Country hang on to mentionable chances (~15-20%)
through Wednesday. Moderate onshore flow (10-20 mph) will generally keep minimum RH values above thresholds, occasionally dipping into the 30-40% range during the latter half of the week. Combined with ERC values in the 20-25th percentile range occasionally up to around 50th percentile. Based on the forecasted above normal moisture and low ERC values, elevated fire weather is not expected at this time.

PRELIMINARY POINT TEMPS/POPS
Corpus Christi 83 71 82 71 / 10 0 0 0 Victoria 84 68 84 68 / 10 0 0 0 Laredo 91 72 92 72 / 10 10 0 10 Alice 86 69 87 70 / 10 0 0 0 Rockport 82 72 82 73 / 10 0 0 0 Cotulla 91 71 90 70 / 10 10 10 10 Kingsville 85 70 85 70 / 10 0 0 0 Navy Corpus 80 73 79 73 / 10 0 0 0

CRP WATCHES/WARNINGS/ADVISORIES
TX...None.
GM...None.