Marine forecast
Laguna Madre: Arroyo Colorado–Port Mansfield
- current wind
- 17 kt SSE
- Gusts
- 19 kt
- Air
- 87°F
- 72-hr peak
- 23 kt
- Peak seas
- 1 ft
Observed Tue 2:00 PM | GMZ132
- Gusts now
- 19 kt
- Air
- 87°F
- 72-hr peak
- 23 kt
- Peak seas
- 1 ft
In brief
At 2:00 pm CDT on Oct 13, 2026, NDBC station RLIT2 (Realitos Peninsula, TX, 17 miles away) measured wind from the SSE at 17 kt, gusting to 19 kt. The NWS forecast for Laguna Madre: Arroyo Colorado–Port Mansfield, TX issued at 1:38 pm CDT on Oct 13, 2026 reads, for rest of today: “Southeast winds 15 to 20 knots. Choppy on the bay.”
Source: National Weather Service Brownsville TX forecast; NDBC observations
Wind forecast · ktPeak 23 kt
Seas forecast · ftPeak 1 ft
NWS marine forecast
| Period | Forecast |
|---|---|
| Rest Of Today | Southeast winds 15 to 20 knots. Choppy on the bay. |
| Tonight | Southeast winds 15 to 20 knots, diminishing to 10 to 15 knots early in the morning. Choppy on the bay, diminishing to a moderate chop early in the morning. |
| Wednesday | Southeast winds 10 to 15 knots, increasing to 15 to 20 knots in the afternoon. A moderate chop on the bay, increasing to choppy in the afternoon. |
| Wednesday Night | Southeast winds 15 to 20 knots, diminishing to 10 to 15 knots early in the morning. Choppy on the bay, diminishing to a moderate chop early in the morning. |
| Thursday | Southeast winds 10 to 15 knots. A moderate chop on the bay. |
| Thursday Night | East winds 5 to 10 knots. Light chop on the bay. |
| Friday | Northeast winds 5 to 10 knots, increasing to 20 to 25 knots with gusts up to 30 knots. Light chop on the bay, increasing to rough. A chance of showers in the morning, then showers likely with a chance of thunderstorms in the afternoon. |
| Friday Night | Northeast winds 15 to 20 knots, becoming north 20 to 25 knots in the late evening and overnight. Gusts to 35 knots. Choppy on the bay, increasing to rough in the late evening and overnight. Showers likely with a chance of thunderstorms early in the evening, then a slight chance of thunderstorms in the late evening and early morning. A chance of showers in the late evening and overnight. |
| Saturday | North winds 25 to 30 knots, diminishing to 20 to 25 knots late in the morning, then increasing to 25 to 30 knots early in the afternoon, diminishing to 20 to 25 knots late in the afternoon. Very rough on the bay, diminishing to rough late in the morning, then increasing to very rough early in the afternoon, diminishing to rough late in the afternoon. A slight chance of thunderstorms in the morning. A chance of showers. |
| Saturday Night | North winds 15 to 20 knots, diminishing to 10 to 15 knots in the late evening and overnight. Choppy on the bay, diminishing to a moderate chop in the late evening and overnight. A chance of showers, mainly in the evening. Winds and waves 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), 17.1 miles away.
Frequently asked questions
What is the marine forecast for Laguna Madre: Arroyo Colorado–Port Mansfield today?
Rest Of Today: Southeast winds 15 to 20 knots. Choppy on the bay.
Is there a small craft advisory for Laguna Madre: Arroyo Colorado–Port Mansfield?
No advisories, warnings or watches are in effect for NWS zone GMZ132 as of the last update on this page. Advisories can be issued at any time; check the current bulletin before leaving the dock.
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 GMZ132, 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.