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
161 of 163
Newest spectrum
45 min ago
Systems named
305
Swell · wind sea
204 · 101
Seas crossing
4 buoys
Storms, last month
190 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 13 ft); its width is the directional spread. Swell Wind sea Storm placed

StationSystems nowSeas crossingStorm placed
Arecibo, PR 41121 · Caribbean and tropical Atlantic · 45 min ago
  • Wind sea3.0 ft6 sNE ↑ building
  • Groundswell1.3 ft17 sNNE ↑ building
About 1150 mi to the N (007°T)
Caribbean Valley 42060 · Caribbean and tropical Atlantic · 55 min ago
  • Wind sea3.1 ft4 sENE
Central Caribbean 42058 · Caribbean and tropical Atlantic · 55 min ago
  • Wind sea5.6 ft7 sE
East Bahamas 41046 · Caribbean and tropical Atlantic · 55 min ago
  • Groundswell3.0 ft15 sENE ↑ building
  • Swell2.2 ft5 sSE
  • Swell0.9 ft8 sN ↓ fading
About 3000 mi to the NE (039°T)
NE Puerto Rico 41043 · Caribbean and tropical Atlantic · 55 min ago
  • Wind sea4.5 ft6 sESE
  • Swell2.0 ft9 sNNE
  • Groundswell1.6 ft15 sN
NE St Martin 41044 · Caribbean and tropical Atlantic · 55 min ago
  • Wind sea3.0 ft6 sE new
  • Swell2.7 ft9 sN new
  • Groundswell1.8 ft15 sN
  • +1 more
North Equatorial One 41040 · Caribbean and tropical Atlantic · 55 min ago
  • Swell2.5 ft11 sNNW ↑ building
  • Groundswell2.5 ft16 sNNE ↑ building
  • Swell2.5 ft7 sESE new
  • +2 more
North Equatorial Two 41041 · Caribbean and tropical Atlantic · 55 min ago
  • Swell3.7 ft10 sENE ↓ fading
  • Groundswell2.2 ft16 sN ↑ building
  • Wind sea1.3 ft4 sE new
Western Caribbean 42057 · Caribbean and tropical Atlantic · 55 min ago
  • Wind sea3.9 ft6 sE