Northern Hawaii One - 245NM NE of Honolulu HI
United States
Last wave reading:
Now at the buoy
Significant wave height at the buoy
10.5 ft
3.2 m
- Dominant period
- —
- Direction
- from NW 318°
Swell
8.2 ft2.5 m
15 sfrom NW 315°
Wind waves
6.6 ft2.0 m
7.1 sfrom ENE 68°
Long-period groundswell leads: 8.2 ft at 15 s from the NW, with 6.6 ft of wind waves at 7.1 s from the ENE on top. 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 tracked the buoy within 10%.
| Day | Height | Peak period | From |
|---|---|---|---|
| Fri, Nov 13 | 11.0 ft | 14 s | N |
| Sat, Nov 14 | 9.8 ft | 17 s | N |
| Sun, Nov 15 | 12.1 ft | 12 s | NNE |
| Mon, Nov 16 | 12.0 ft | 12 s | NNE |
| Tue, Nov 17 | 10.4 ft | 9.9 s | NE |
| Wed, Nov 18 | 9.3 ft | 9.5 s | E |
| Thu, Nov 19 | 8.3 ft | 9.2 s | E |
ECMWF WAM wave model via Open-Meteo, nearest model cell (23.500°N, 153.750°W). Both lines are significant wave height at sea, the same measure the buoy reports. Model output, not a Quiver beach forecast.
Nearby buoys
- Pauwela, Maui, HIOffline · 392 km
- Hilo, Hawaii, HI9.5 ft · 8 sLive · 436 km
- Mokapu Point, HI9.8 ftLive · 467 km
- Waimea Bay, HI8.9 ftLive · 494 km
- Pearl Harbor Entrance, HI3.6 ftLive · 499 km
- Barbers Point, Kalaeloa, HI5.2 ft · 15 sStale · 514 km
Other readings
- Water temperature
- 78°F (25.3°C)
- Wind
- 17 kt from the ENE, gusts 21 kt
- Air temperature
- 75°F (23.8°C)
- Pressure
- 1021.6 hPa
Reported Nov 13, 12:10 AM GMT-10.
How to read this buoy
Over the readings shown here, most wave energy reached this buoy from the N and NW.
Biggest hourly reading in that record: 14.1 ft at 16 s on Nov 11.
- Station id
- 51000
- Operator
- NDBC
- Program
- NDBC Meteorological/Ocean
- Position
- 23.534°N, 153.752°W
- Type
- Moored buoy
- Local time zone
- GMT-10 (open ocean)
- Swell split
- Yes, swell and wind waves reported
Source: NOAA National Data Buoy Center (NDBC). 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.
