Bluegraph
SIMarineUS

Wave intelligence

The systems in the sea

A buoy's significant wave height sums everything in the sea: long groundswell from a storm a thousand miles off, a closer swell, the chop of the local wind. Each buoy's measured directional spectrum is partitioned into those systems, which are followed through time, used to place the storms the swells came from, and checked for seas that cross.

Stations analysed
162 of 164
Newest spectrum
51 min ago
Systems named
307
Swell · wind sea
198 · 109
Seas crossing
9 buoys
Storms, last month
206 placed →
Window
The last 4 days
Method
Reference

The wave systems in each buoy's latest spectrum, largest first, and whether each is building or fading.

Each petal is a system, pointing to where it comes from, north up. Its length grows with height (the ring is 4 m); its width is the directional spread. Swell Wind sea Storm placed

StationSystems nowSeas crossingStorm placed
Arecibo, PR 41121 · Caribbean and tropical Atlantic · 1 h ago
  • Wind sea1.0 m6 sNE
  • Groundswell0.6 m14 sNNE
About 2200 km to the N (011°T)
Caribbean Valley 42060 · Caribbean and tropical Atlantic · 51 min ago
  • Wind sea1.3 m6 sE new
About 950 km to the ESE (117°T)
Central Caribbean 42058 · Caribbean and tropical Atlantic · 51 min ago
  • Wind sea1.8 m7 sE
East Bahamas 41046 · Caribbean and tropical Atlantic · 51 min ago
  • Wind sea1.1 m5 sESE new
  • Swell0.7 m12 sENE new
  • Groundswell0.3 m15 sSE new
About 1650 km to the W (279°T)
NE Puerto Rico 41043 · Caribbean and tropical Atlantic · 51 min ago
  • Swell1.2 m7 sE
  • Swell0.8 m11 sNE new
  • Wind sea0.4 m4 sNE new
NE St Martin 41044 · Caribbean and tropical Atlantic · 51 min ago
  • Swell0.9 m10 sE ↓ fading
  • Groundswell0.8 m14 sN new
  • Wind sea0.5 m4 sE new
North Equatorial One 41040 · Caribbean and tropical Atlantic · 51 min ago
  • Swell1.3 m10 sENE
  • Groundswell0.8 m15 sNNE
  • Wind sea0.7 m4 sE ↑ building
45° apartAbout 5100 km to the NNE (026°T)
North Equatorial Two 41041 · Caribbean and tropical Atlantic · 51 min ago
  • Swell0.9 m9 sENE ↓ fading
  • Groundswell0.7 m14 sNNE ↓ fading
  • Wind sea0.7 m5 sE new
  • +2 more
Western Caribbean 42057 · Caribbean and tropical Atlantic · 51 min ago
  • Wind sea1.3 m6 sE new