S.w. pier
NDBC buoy swpm4
Observed , 41 minutes ago
Favorable
Light and variable winds, easing. Water 63°F, air 59°F. Tonight: Southeast Wind 5 To 10 Knots.
It tells you it is rough now. The app tells you before it gets rough, with alerts at the wind and wave limits you set.
Get Buoycast for iPhoneWind
Speed
2.9kn
Gust
6kn
Direction
140° SE
Trend
Easing
Last 11 hours2.9 to 13 kn
Air temp
59°F
50 to 65°F today
Water temp
63°F
63 to 64°F today
Pressure
1032mbar
Tendency
Easing
3 hour change
-0.6 mbar
Last 11 hours1032 to 1035 mbar
Zone forecast
Tonight
Southeast Wind 5 To 10 Knots. Mostly Clear.
Thursday
Southeast Wind 5 To 10 Knots. Sunny.
Thursday Night
Southeast Wind 5 To 10 Knots. Mostly Cloudy.
NWS zone St. Marys River Point Iroquois to E. Potagannissing Bay
Last 24 hours
Every 3 hours, over the last 12 hours. Air 50 to 65°F, pressure 1,032 to 1,035 mbar over the same window.
4 stations within 30 NM
These are your in one place. Save the ones you run and Buoycast opens on them.
Get Buoycast for iPhoneCommon questions
How often does buoy swpm4 report?
Wind, temperature and pressure update about every 10 minutes.
Can I be notified when conditions change at buoy swpm4?
Buoycast Pro lets you set your own limits on wind, waves or pressure and sends a threshold notification when this buoy crosses them.
Does this page show NOAA warnings for this area?
Watches, warnings, and advisories for St. Marys River Point Iroquois to E. Potagannissing Bay appear alongside the conditions, here and in the app. Pro also pushes NOAA watches, warnings, and advisories when they are issued.
Can I see the forecast against what buoy swpm4 measured?
This page shows measurements only. Buoycast Pro charts the NOAA forecast against them so you can see where the two diverge.
Can I keep buoy swpm4 for next time?
Save it as a favorite and Buoycast opens on the buoys you run.
What this buoy measures
This buoy is not reporting waves. Conditions above come from the sensors it does carry, and the forecast, tides and sun times on this page are regional rather than measured at the buoy.
Station swpm4
46°30'04" N 84°22'19" W · owned and maintained by NOAA NOS PORTS
Measured on the water by 1,000+ NOAA buoys. Observations from the National Data Buoy Center, forecasts and advisories from the National Weather Service. Not for navigation.