Aunuu, American Samoa
American Samoa, United States
Last wave reading:
Now at the buoy
Significant wave height at the buoy
10.5 ft
3.2 m
- Dominant period
- 11 s
- Direction
- from SE 125°
Swell
5.2 ft1.6 m
11 sfrom SE 135°
Wind waves
9.2 ft2.8 m
9.9 sfrom SE 135°
Wind waves lead: 9.2 ft at 9.9 s from the SE, over 5.2 ft of mid-period swell at 11 s from the SE. Holding steady over the last 6 hours.
Significant wave height is the average of the biggest third of waves at the buoy. It is not surf height at a beach.
Trend at the buoy
Height at the buoy
- Total (significant height)
- Swell
- Wind waves
Period
- Swell period
- Wind-wave period
Hourly means of the buoy's readings. Arrows point the way the waves travel.
Model vs the buoy
- Buoy, hourly
- Model, past days
- Model forecast
Over the last 5 days, the model ran 10% low against the buoy.
| Day | Height | Peak period | From |
|---|---|---|---|
| Thu, Nov 12 | 9.4 ft | 9.7 s | ESE |
| Fri, Nov 13 | 9.6 ft | 10 s | ESE |
| Sat, Nov 14 | 9.6 ft | 10 s | ESE |
| Sun, Nov 15 | 9.5 ft | 11 s | ESE |
| Mon, Nov 16 | 11.5 ft | 11 s | ESE |
| Tue, Nov 17 | 11.9 ft | 11 s | ESE |
| Wed, Nov 18 | 11.9 ft | 11 s | ESE |
| Thu, Nov 19 | 11.7 ft | 11 s | ESE |
ECMWF WAM wave model via Open-Meteo, nearest model cell (14.250°S, 170.500°W). Both lines are significant wave height at sea, the same measure the buoy reports. Model output, not a Quiver beach forecast.
Nearby buoys
- King-Poloa, American Samoa6.2 ft · 11 sLive · 40 km
Nearest tide station: Pago Pago Harbor, Tutuila Island 20 km for today’s highs and lows.
Other readings
- Water temperature
- 82°F (27.5°C)
- Air temperature
- 80°F (26.9°C)
Reported Nov 12, 10:26 PM GMT-11.
How to read this buoy
Over the readings shown here, most wave energy reached this buoy from the S and SE.
Biggest hourly reading in that record: 12.6 ft at 11 s on Nov 4.
- Station id
- 51209
- CDIP id
- 189
- Operator
- Pacific Islands Ocean Observing System
- Program
- IOOS Partners
- Position
- 14.273°S, 170.501°W
- Type
- Moored buoy
- Local time zone
- Pacific/Pago_Pago
- Swell split
- Yes, swell and wind waves reported
Source: NOAA National Data Buoy Center (NDBC); station operated by Pacific Islands Ocean Observing System. Licence: Public domain (US government work). Station page at the source.
Not for navigation. Readings can be late, missing or wrong; check official marine forecasts before going to sea.
Buoy terms
- Significant height
- The average of the biggest third of waves the buoy measured. Sets in the surf zone can be bigger or smaller.
- Dominant period
- Seconds between the waves carrying the most energy. Longer period means more power and more bend around points.
- Swell vs wind waves
- Swell was made by distant wind; wind waves were made nearby. The buoy splits its spectrum at a cutoff period to report each.
- Direction
- Where waves come from, in degrees true. 270° is from the west.
