Northwestern Hawaii One - 188 NM NW of Kauai Island, HI
Hawaii, United States
Last wave reading:
Now at the buoy
Significant wave height at the buoy
8.9 ft
2.7 m
- Dominant period
- 13 s
- Direction
- from NW 323°
Swell
6.6 ft2.0 m
13 sfrom NW 315°
Wind waves
6.2 ft1.9 m
7.1 sfrom ENE 68°
Mid-period swell leads: 6.6 ft at 13 s from the NW, with 6.2 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 | 9.4 ft | 9.1 s | NE |
| Sat, Nov 14 | 9.6 ft | 8.8 s | ENE |
| Sun, Nov 15 | 10.5 ft | 13 s | NE |
| Mon, Nov 16 | 10.2 ft | 10 s | ENE |
| Tue, Nov 17 | 8.1 ft | 9.2 s | ENE |
| Wed, Nov 18 | 7.7 ft | 8.8 s | E |
| Thu, Nov 19 | 6.6 ft | 9.7 s | E |
ECMWF WAM wave model via Open-Meteo, nearest model cell (24.500°N, 162.000°W). Both lines are significant wave height at sea, the same measure the buoy reports. Model output, not a Quiver beach forecast.
Nearby buoys
- Northwestern Hawaii Two - 186 NM NW of Kauai Is., HI7.9 ftLive · 16 km
- Waimea Bay, HI8.9 ft · 13 sLive · 507 km
- Barbers Point, Kalaeloa, HI5.2 ft · 15 sStale · 530 km
- Pearl Harbor Entrance, HI3.3 ft · 9 sLive · 547 km
- Mokapu Point, HI9.2 ft · 8 sLive · 560 km
Other readings
- Wind
- 16 kt from the ENE, gusts 19 kt
- Pressure
- 1023.2 hPa
Reported Nov 12, 11:20 PM GMT-11.
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: 14.9 ft at 16 s on Nov 1.
- Station id
- 51001
- Operator
- NDBC
- Program
- NDBC Meteorological/Ocean
- Position
- 24.475°N, 162.030°W
- Type
- Moored buoy
- Local time zone
- GMT-11 (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.
