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 164
Newest spectrum
39 min ago
Systems named
301
Swell · wind sea
199 · 102
Seas crossing
6 buoys
Storms, last month
212 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 · 39 min ago
  • Wind sea1.1 m6 sNE
  • Groundswell0.4 m14 sNNE ↓ fading
Caribbean Valley 42060 · Caribbean and tropical Atlantic · 49 min ago
  • Wind sea1.1 m5 sESE new
  • Swell0.5 m7 sENE new
About 550 nmi to the ESE (114°T)
Central Caribbean 42058 · Caribbean and tropical Atlantic · 1 h ago
  • Wind sea1.8 m7 sE
  • Swell0.7 m8 sNNE new
East Bahamas 41046 · Caribbean and tropical Atlantic · 49 min ago
  • Wind sea1.1 m6 sE
  • Swell0.7 m13 sNNE
About 850 nmi to the W (278°T)
NE Puerto Rico 41043 · Caribbean and tropical Atlantic · 1 h ago
  • Swell1.0 m6 sESE ↓ fading
  • Swell0.8 m11 sN ↑ building
  • Swell0.6 m11 sESE ↑ building
NE St Martin 41044 · Caribbean and tropical Atlantic · 49 min ago
  • Swell1.1 m11 sENE ↑ building
  • Swell0.5 m5 sENE
About 1250 nmi to the E (098°T)
North Equatorial One 41040 · Caribbean and tropical Atlantic · 49 min ago
  • Groundswell1.2 m15 sENE ↑ building
  • Wind sea1.1 m5 sE ↑ building
  • Swell0.5 m10 sNNW new
North Equatorial Two 41041 · Caribbean and tropical Atlantic · 49 min ago
  • Groundswell1.1 m14 sNNE
  • Swell0.9 m8 sE
  • Wind sea0.5 m5 sENE ↓ fading
About 3600 nmi to the NNE (022°T)
Western Caribbean 42057 · Caribbean and tropical Atlantic · 49 min ago
  • Swell0.9 m7 sE
  • Swell0.3 m3 sSSE new