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 162
Newest spectrum
41 min ago
Systems named
309
Swell · wind sea
199 · 110
Seas crossing
7 buoys
Storms, last month
177 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
Aunuu, American Samoa 51209 · Pacific islands · 41 min ago
  • Wind sea2.9 m8 sESE
King-Poloa, American Samoa 51214 · Pacific islands · 1 h ago
  • Wind sea1.5 m8 sSE
  • Groundswell1.0 m13 sS ↓ fading
45° apart
Ngaraard, Palau 52212 · Pacific islands · 1 h ago
  • Wind sea0.4 m10 sE ↑ building
North Point, Pohnpei 52213 · Pacific islands · 1 h ago
  • Wind sea0.9 m6 sWNW new
  • Swell0.4 m12 sESE new
Pikareej, Arno Atoll, Marshall Islands 52216 · Pacific islands · 1 h ago
  • Wind sea1.0 m10 sNE ↑ building
Rumung, Yap 52214 · Pacific islands · 1 h ago
  • Swell0.8 m10 sNNW ↓ fading
  • Wind sea0.8 m5 sW new