Marine forecast
Mexico Bay–the St. Lawrence River (5+ nm), NY
- current wind
- 6 kt SSE
- Gusts
- 9 kt
- Seas
- 0.3 ft
- Air
- 76°F
- 72-hr peak
- 25 kt
Observed Tue 3:00 PM | LOZ065
- Gusts now
- 9 kt
- Seas now
- 0.3 ft
- Air
- 76°F
- 72-hr peak
- 25 kt
- Peak seas
- 8 ft
In brief
At 3:00 pm EDT on Oct 13, 2026, NDBC station OSGN6 (Oswego, NY, 23 miles away) measured wind from the SSE at 6 kt, gusting to 9 kt; buoy 45215 measured seas of 0.3 ft. The NWS forecast for Mexico Bay–the St. Lawrence River (5+ nm), NY issued at 10:03 am EDT on Oct 13, 2026 reads, for rest of today: “South winds 5 to 15 knots. Showers with a chance of thunderstorms.”
Source: National Weather Service Buffalo NY forecast; NDBC observations
Wind forecast · ktPeak 25 kt
Seas forecast · ftPeak 8 ft
NWS marine forecast
| Period | Forecast |
|---|---|
| Rest Of Today | South winds 5 to 15 knots. Showers with a chance of thunderstorms. Waves 2 feet or less. |
| Tonight | Southwest winds 10 to 15 knots becoming west. Showers likely with a chance of thunderstorms early, then a chance of showers and thunderstorms late in the evening. Waves 1 to 3 feet building to 2 to 4 feet. |
| Wednesday | Northwest winds 10 to 15 knots becoming west. Waves 2 to 4 feet subsiding to 1 to 3 feet. |
| Wednesday Night | Northwest winds 10 to 15 knots becoming north 15 to 20 knots. Waves 1 to 3 feet building to 2 to 4 feet. |
| Thursday | Northeast winds 5 to 15 knots becoming southeast. Showers Thursday night. Waves 2 to 4 feet subsiding to 2 feet or less. |
| Friday | Southwest winds 15 to 25 knots becoming northwest and increasing to 35 knot gales. Showers. Waves 3 to 5 feet building to 9 to 13 feet. Waves occasionally around 16 feet. |
| Saturday | Northwest gales to 35 knots becoming west and diminishing to 15 to 20 knots. A chance of rain showers during the day. Waves 10 to 13 feet subsiding to 4 to 7 feet. Waves occasionally around 16 feet. Winds and waves higher in and near thunderstorms. |
Issued Tue 10:03 AM by Buffalo NY (product GLFLO).
Synopsis
A cold front will sweep southeast across the lower Great Lakes this afternoon. Behind the cold front, a ridge averaging 30.2 inches will build in from northern Ontario through Thursday. A low averaging 29.5 inches may move across the Great Lakes region Friday. There is uncertainty in the track of this low, with the potential of deepening as it crosses the region. A 30.5 inch high will build into the Great Lakes region this weekend. LOZ062-132100- Lake Ontario open waters from the Niagara River to Hamlin Beach- 1003 AM EDT Tue Oct 13 2026
Recent buoy conditions
| Time | Wind | Gust | Seas | Water |
|---|---|---|---|---|
| Tue 3:00 PM | 6 kt SSE | 9 kt | — | — |
| Tue 2:54 PM | 7 kt SSE | 10 kt | — | — |
| Tue 1:54 PM | 5 kt SSE | 9 kt | — | — |
| Tue 12:54 PM | 5 kt SSW | 12 kt | — | — |
| Tue 11:54 AM | 10 kt SSE | 13 kt | — | — |
| Tue 10:54 AM | 9 kt SSE | 12 kt | — | — |
| Tue 9:54 AM | 7 kt SSE | 8 kt | — | — |
| Tue 8:54 AM | 7 kt S | 10 kt | — | — |
| Tue 7:54 AM | 8 kt S | 12 kt | — | — |
| Tue 6:54 AM | 9 kt SSE | 13 kt | — | — |
| Tue 5:54 AM | 9 kt S | 11 kt | — | — |
| Tue 4:54 AM | 8 kt S | 11 kt | — | — |
Observed Tue 3:00 PM at NDBC buoy OSGN6 (Oswego, NY), 22.6 miles away. Seas from buoy 45215 (Oswego, NY (274)), 21.0 miles away, at Tue 2:56 PM.
Frequently asked questions
What is the marine forecast for Mexico Bay–the St. Lawrence River (5+ nm) today?
Rest Of Today: South winds 5 to 15 knots. Showers with a chance of thunderstorms. Waves 2 feet or less.
Is there a small craft advisory for Mexico Bay–the St. Lawrence River (5+ nm)?
No advisories, warnings or watches are in effect for NWS zone LOZ065 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 Mexico Bay–the St. Lawrence River (5+ nm) right now?
Seas are running 0.3 ft, measured at NDBC buoy OSGN6 Tue 3:00 PM, 22.6 miles from this zone. The forecast peaks at 8.0 ft Fri 3 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 LOZ065, issued by Buffalo NY, 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 GLFLO, issued Tue 10:03 AM. Observations: NOAA National Data Buoy Center station OSGN6, read Tue 3:00 PM. Retrieved Oct 13, 3:42 PM. Conditions offshore change faster than any page can be rebuilt, so check the current NWS bulletin and your own instruments before going out.