Marine Weather and Tide Forecast for Port Aransas, TX

LONG TERM
(Monday through next Friday)
Issued at 133 PM CDT Sat May 17 2025

Key Messages:

- Major to Extreme risk of heat-related impacts Monday, decreasing to Moderate to Major Tuesday

- Low chances (10-20%) for rainfall Wednesday along the Rio Grande

Hot conditions will continue into next week with a Moderate to Major risk for heat-related impacts across the eastern half of CWA Monday and Major to Extreme risk across the western half. The heat risk will decrease to Moderate to Major Tuesday with the most significant impacts expected from the Coastal Plains to the Rio Grande. To finally get some relief from the heat, an upper level disturbance will swing across the Great Plains mid-week ejecting a cold front into Texas. While the front is expected to stall north of the region, winds are expected to shift predominately from the east which will lower our dewpoints and in turn, keep the heat index values at bay. As the front stalls mid-week, sufficient moisture and lift will be in place to promote low chances for showers across the Rio Grande.

Please use caution if outdoors and remember to remain hydrated and take frequent breaks. More heat safety information can be found at weather.gov/heat

AVIATION
(00Z TAFS)
Issued at 631 PM CDT Sat May 17 2025

Aviation conditions will deteriorate rapidly after sunset to a mixture of MVFR/IFR levels. Thunderstorms currently just west of the border could advance into our western terminals early this evening, therefore have added a mention of VCTS to account for this possibility. The storms are forecast to weaken as they head east, but will keep an eye on them in case TAFs need to be amended to include these in. Poor aviation conditions will persist through mid to late Sunday morning before lifting to VFR.
Winds will decouple over the next few hours to below 10 knots overnight, before becoming gusty again by Sunday afternoon.

MARINE
Issued at 133 PM CDT Sat May 17 2025

Moderate (BF 4) onshore flow today will increase to Fresh (BF 5) by Sunday evening accompanied by 3-5 ft. seas. Visibilities across the waters tonight have a 10-20% chance of dropping to around 3-5 miles. Chances for precipitation remain near zero heading into the upcoming work week. A fresh southerly flow (BF 5) is expected Monday decreasing to moderate (BF 4) Tuesday before plateauing at gentle to moderate levels (BF 3-4) Wednesday through Friday when the winds shift to the east.

PRELIMINARY POINT TEMPS/POPS
Corpus Christi 78 90 78 92 / 10 0 0 0 Victoria 76 91 76 92 / 10 0 0 0 Laredo 78 103 79 107 / 10 0 0 0 Alice 76 97 76 100 / 10 0 0 0 Rockport 78 87 79 89 / 10 0 0 0 Cotulla 78 102 79 106 / 30 10 0 10 Kingsville 77 94 77 97 / 10 0 0 0 Navy Corpus 78 86 79 87 / 0 0 0 0

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