Marine forecast
Port Mansfield TX to the Rio Grande River
- current wind
- 17 kt SSE
- Gusts
- 19 kt
- Seas
- 4.3 ft
- Period
- 6 sec
- Air
- 87°F
Observed Tue 2:00 PM | GMZ150
- Gusts now
- 19 kt
- Seas now
- 4.3 ft · 6 sec
- Air
- 87°F
- 72-hr peak
- 17 kt
- Peak seas
- 4 ft
In brief
At 2:00 pm CDT on Oct 13, 2026, NDBC station RLIT2 (Realitos Peninsula, TX, 12 miles away) measured wind from the SSE at 17 kt, gusting to 19 kt; buoy 42092 measured seas of 4.3 ft. The NWS forecast for Port Mansfield TX to the Rio Grande River issued at 1:38 pm CDT on Oct 13, 2026 reads, for rest of today: “Southeast winds around 15 knots. Seas 3 to 4 feet.”
Source: National Weather Service Brownsville TX forecast; NDBC observations
Wind forecast · ktPeak 17 kt
Seas forecast · ftPeak 4 ft
NWS marine forecast
| Period | Forecast |
|---|---|
| Rest Of Today | Southeast winds around 15 knots. Seas 3 to 4 feet. Wave Detail: Southeast 4 feet at 6 seconds. |
| Tonight | Southeast winds around 15 knots. Seas 3 to 4 feet. Wave Detail: Southeast 4 feet at 6 seconds. |
| Wednesday | Southeast winds 15 to 20 knots. Seas 4 to 5 feet. Wave Detail: Southeast 4 feet at 6 seconds. |
| Wednesday Night | Southeast winds 15 to 20 knots. Seas 4 to 5 feet. Wave Detail: Southeast 5 feet at 6 seconds. |
| Thursday | Southeast winds 10 to 15 knots. Seas 3 to 5 feet. Wave Detail: Southeast 4 feet at 7 seconds. |
| Thursday Night | East winds 5 to 10 knots. Seas 3 to 4 feet. Wave Detail: East 3 feet at 6 seconds. |
| Friday | Northeast winds 5 to 10 knots, increasing to 20 to 25 knots with gusts up to 30 knots. Seas 3 to 4 feet, building to 4 to 6 feet, occasionally to 8 feet in the afternoon. A chance of showers with a slight chance of thunderstorms in the morning, then showers likely with a chance of thunderstorms in the afternoon. |
| Friday Night | Northeast winds 20 to 25 knots, becoming north 25 to 30 knots after midnight. Seas 5 to 7 feet, occasionally to 9 feet, building to 8 to 11 feet, occasionally to 14 feet after midnight. Showers likely with a chance of thunderstorms in the evening, then a chance of showers with a slight chance of thunderstorms after midnight. |
| Saturday | North winds 25 to 30 knots, diminishing to 20 to 25 knots late in the afternoon. Seas 10 to 14 feet, occasionally to 18 feet, subsiding to 8 to 13 feet, occasionally to 17 feet in the afternoon. A chance of showers with a slight chance of thunderstorms in the morning, then a chance of showers in the afternoon. |
| Saturday Night | Northeast winds 15 to 20 knots. Gusts to 30 knots early in the evening. Seas 6 to 9 feet, occasionally to 11 feet, subsiding to 4 to 6 feet, occasionally to 8 feet after midnight. A chance of showers, mainly in the evening. Winds and seas higher in and near thunderstorms. |
Issued Tue 1:38 PM by Brownsville TX (product CWFBRO).
Synopsis
Increased wind speeds due to a tightened pressure gradient will likely lead to adverse conditions developing on the Gulf and Laguna Madre through Wednesday. Conditions will likely briefly improve Thursday, before winds and seas increase Friday as a cold front approaches the area.
Recent buoy conditions
| Time | Wind | Gust | Seas | Water |
|---|---|---|---|---|
| Tue 2:00 PM | 17 kt SSE | 19 kt | — | — |
| Tue 1:54 PM | 17 kt SSE | 19 kt | — | — |
| Tue 12:54 PM | 15 kt SSE | 18 kt | — | — |
| Tue 11:54 AM | 16 kt SSE | 19 kt | — | — |
| Tue 10:54 AM | 16 kt SSE | 19 kt | — | — |
| Tue 9:54 AM | 16 kt SSE | 19 kt | — | — |
| Tue 8:54 AM | 14 kt SSE | 17 kt | — | — |
| Tue 7:54 AM | 12 kt SSE | 15 kt | — | — |
| Tue 6:54 AM | 12 kt SSE | 15 kt | — | — |
| Tue 5:54 AM | 13 kt SSE | 17 kt | — | — |
| Tue 4:54 AM | 12 kt SSE | 14 kt | — | — |
| Tue 3:54 AM | 13 kt SSE | 15 kt | — | — |
Observed Tue 2:00 PM at NDBC buoy RLIT2 (Realitos Peninsula, TX), 11.6 miles away. Seas from buoy 42092 (Aransas Pass Channel Entrance S, TX (252)), 96.5 miles away, at Tue 2:00 PM.
Frequently asked questions
What is the marine forecast for Port Mansfield TX to the Rio Grande River today?
Rest Of Today: Southeast winds around 15 knots. Seas 3 to 4 feet. Wave Detail: Southeast 4 feet at 6 seconds.
Is there a small craft advisory for Port Mansfield TX to the Rio Grande River?
No advisories, warnings or watches are in effect for NWS zone GMZ150 as of the last update on this page. Advisories can be issued at any time; check the current bulletin before leaving the dock.
How high are the waves at Port Mansfield TX to the Rio Grande River right now?
Seas are running 4.3 ft at a 6-second period, measured at NDBC buoy RLIT2 Tue 2:00 PM, 11.6 miles from this zone. The forecast peaks at 4.0 ft Tue 2 PM.
What do the wind speeds in knots mean?
One knot is 1.15 mph. The National Weather Service issues a small craft advisory for sustained winds of roughly 22–33 knots or hazardous seas, a gale warning at 34–47 knots, and a storm warning at 48 knots and above. Exact advisory thresholds vary by forecast office and by water body — a bay reaches dangerous chop at a lower wind speed than open ocean.
Where does this forecast come from?
The forecast text is the National Weather Service's own marine bulletin for zone GMZ150, issued by Brownsville TX, reproduced in full. The wind and seas charts are drawn from the NWS gridded forecast for a point inside the zone. Observations come from the nearest reporting NDBC buoy. We are not affiliated with NOAA or the National Weather Service.
Forecast: NOAA/NWS product CWFBRO, issued Tue 1:38 PM. Observations: NOAA National Data Buoy Center station RLIT2, read Tue 2:00 PM. Retrieved Oct 13, 2:42 PM. Conditions offshore change faster than any page can be rebuilt, so check the current NWS bulletin and your own instruments before going out.