Height
3.6m
Hs
Period
10s
Tp
Direction
SW
222°
Water
—
Last update: 17 Oct, 03:50
Access historical readings and compare readings with the forecast
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Last 24 hours
Time(UTC) | Wave height | Max height | Period | Direction | Water temperature | Energy |
|---|---|---|---|---|---|---|
Buoy CENTRAL GULF OF ALASKA - 265NM West of Cape Ommaney, AK continuously measures essential oceanographic parameters for surfing and water sports. (55.840000° lat, -142.895000° lng)
On 17 October 2026 at 03:50 UTC: 3.6 m significant wave height, 10 s period, from the SW (222°).
This marine station records significant wave height, maximum height, wave period, swell direction, and water temperature.
This buoy's observations are supplied through NOAA National Data Buoy Center by NOAA.
The average of the highest third of waves. This is the most representative measure of the wave size you'll see on the water.
The highest wave recorded during the measurement period. Generally 1.5 to 2 times the significant height.
The time in seconds between two wave crests. A long period (>12s) indicates more powerful and consistent groundswell.
The direction the swell is coming from. The impact on the coast depends on the shoreline orientation.
Significant height (Hs) is the average of the highest third of waves, representing what you typically observe. Maximum height (Hmax) is the largest wave measured, often 1.5 to 2 times higher than Hs. A set of large waves can occasionally exceed Hs.
A long period (>12s) means waves have traveled far and carry more energy (groundswell). A short period (<8s) indicates local wind-generated swell, more disorganized. For surfing, longer periods produce more powerful and better-shaped waves.
Buoys typically transmit their data every 30 minutes to 1 hour. The delay between measurement and display depends on the transmission network and our collection system.
The buoy measures direction offshore. Waves change direction as they approach the coast due to refraction (seabed effect). Beach orientation and coastal obstacles also influence the final wave direction.
| Oct 16, 01:20 PM | 3.6m 2060 kJ | - | 9.0s | 201° S | - | 2060 kJ |
| Oct 16, 01:10 PM | 3.6m 2958 kJ | - | 13.8s | 201° S | - | 2958 kJ |
| Oct 16, 12:50 PM | 3.4m 1838 kJ | - | 9.0s | 194° S | - | 1838 kJ |
| Oct 16, 12:40 PM | 3.4m 2609 kJ | - | 14.8s | 194° S | - | 2609 kJ |
| Oct 16, 12:20 PM | 3.5m 2404 kJ | - | 10.0s | 186° S | - | 2404 kJ |
| Oct 16, 12:10 PM | 3.5m 1698 kJ | - | 10.0s | 186° S | - | 1698 kJ |
| Oct 16, 11:50 AM | 3.8m 2834 kJ | - | 10.0s | 189° S | - | 2834 kJ |
| Oct 16, 11:40 AM | 3.8m 2152 kJ | - | 10.0s | 189° S | - | 2152 kJ |
| Oct 16, 11:20 AM | 3.5m 1947 kJ | - | 9.0s | 150° SE | - | 1947 kJ |
| Oct 16, 11:10 AM | 3.5m 3377 kJ | - | 16.0s | 150° SE | - | 3377 kJ |