NE Puerto Rico - 170 NM NNE of San Juan, PR
Puerto Rico, United States
Last wave reading:
Now at the buoy
Significant wave height at the buoy
4.6 ft
1.4 m
- Dominant period
- —
- Direction
- from SSE 161°
Swell
2.3 ft0.7 m
11 sfrom ENE 68°
Wind waves
3.6 ft1.1 m
5 sfrom SSE 158°
Wind waves lead: 3.6 ft at 5 s from the SSE, over 2.3 ft of mid-period swell at 11 s from the ENE. Building over the last 6 hours, up 0.7 ft.
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 12% high against the buoy.
| Day | Height | Peak period | From |
|---|---|---|---|
| Fri, Nov 13 | 6.0 ft | 6.4 s | SSE |
| Sat, Nov 14 | 6.3 ft | 6.5 s | SSE |
| Sun, Nov 15 | 5.1 ft | 7.1 s | SE |
| Mon, Nov 16 | 5.4 ft | 9.5 s | N |
| Tue, Nov 17 | 6.9 ft | 8.6 s | NE |
| Wed, Nov 18 | 6.9 ft | 8.5 s | NE |
| Thu, Nov 19 | 6.1 ft | 8.1 s | ENE |
ECMWF WAM wave model via Open-Meteo, nearest model cell (21.000°N, 64.750°W). Both lines are significant wave height at sea, the same measure the buoy reports. Model output, not a Quiver beach forecast.
Nearby buoys
- San Juan, PR2.6 ftLive · 318 km
- Vieques Island, PR2.6 ftLive · 320 km
- Arecibo, Puerto Rico2.6 ftLive · 347 km
- Rincon, Puerto Rico3.0 ft · 11 sLive · 394 km
- Southeast of Ponce, PR4.6 ftLive · 398 km
- East Bahamas - 335 NM East of San Salvador Is, Bahamas4.3 ft · 5 sLive · 472 km
Other readings
- Water temperature
- 85°F (29.5°C)
- Wind
- 16 kt from the SSE, gusts 19 kt
- Air temperature
- 84°F (29.1°C)
- Pressure
- 1012.5 hPa
Reported Nov 13, 5:50 AM GMT-4.
How to read this buoy
Over the readings shown here, most wave energy reached this buoy from the NE and N.
Biggest hourly reading in that record: 7.2 ft at 13 s on Oct 26.
- Station id
- 41043
- Operator
- NDBC
- Program
- NDBC Meteorological/Ocean
- Position
- 21.083°N, 64.853°W
- Type
- Moored buoy
- Local time zone
- GMT-4 (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.
