Sleipner-A
Norway
Last wave reading:
Now at the buoy
Significant wave height at the buoy
10.5 ft
3.2 m
- Dominant period
- 9.9 s
- Direction
- no direction
This station does not send a swell and wind-wave split, so the numbers are for the whole sea.
Short-period swell: 10.5 ft at 9.9 s. 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)
Period
- Dominant 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 2 days, the model ran 25% high against the buoy.
| Day | Height | Peak period | From |
|---|---|---|---|
| Fri, Nov 13 | 13.8 ft | 9.9 s | NNW |
| Sat, Nov 14 | 10.0 ft | 7.7 s | WSW |
| Sun, Nov 15 | 13.9 ft | 9.6 s | NNW |
| Mon, Nov 16 | 16.8 ft | 10 s | NW |
| Tue, Nov 17 | 15.7 ft | 11 s | NW |
| Wed, Nov 18 | 11.3 ft | 13 s | N |
| Thu, Nov 19 | 11.9 ft | 13 s | N |
| Fri, Nov 20 | 6.8 ft | 11 s | N |
ECMWF WAM wave model via Open-Meteo, nearest model cell (58.250°N, 2.000°E). Both lines are significant wave height at sea, the same measure the buoy reports. Model output, not a Quiver beach forecast.
Nearby buoys
- Brae A9.5 ftLive · 51 km
- Beryl A AWS12.8 ftLive · 128 km
- Lomond AWS13.1 ftLive · 131 km
- Oseberg-A13.3 ft · 11 sLive · 241 km
- Troll-A12.3 ft · 9.8 sLive · 273 km
- Troll-B12.3 ft · 9.1 sLive · 282 km
Other readings
- Wind
- 24 kt from the WNW
- Air temperature
- 44°F (6.5°C)
Reported Nov 13, 7:10 AM GMT+1.
How to read this buoy
Biggest hourly reading in that record: 16.7 ft at 11 s on Nov 12.
- Operator
- Equinor ASA
- Program
- Copernicus Marine In Situ
- Position
- 58.371°N, 1.909°E
- Type
- Offshore platform
- Local time zone
- Europe/Oslo
- Swell split
- No, whole-sea numbers only
Source: E.U. Copernicus Marine Service Information; https://doi.org/10.48670/moi-00036. Data from Equinor ASA. Licence: Copernicus Marine Service licence. Changes: Quiver converts the units (feet, knots, °F) and shows a subset of the published fields.
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.
