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
25 min ago
Systems named
334
Swell · wind sea
230 · 104
Seas crossing
9 buoys
Storms, last month
228 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
Ngaraard, Palau 52212 · Pacific islands · 1 h ago
  • Wind sea1.0 ft6 sSSE new
  • Groundswell0.9 ft14 sNE ↑ building
North Point, Pohnpei 52213 · Pacific islands · 1 h ago
  • Wind sea3.4 ft9 sNW
  • Swell1.8 ft11 sE new
Pikareej, Arno Atoll, Marshall Islands 52216 · Pacific islands · 1 h ago
  • Swell4.3 ft13 sENE
  • Wind sea3.8 ft5 sNW
110° apart
Rumung, Yap 52214 · Pacific islands · 1 h ago
  • Wind sea3.1 ft5 sW
  • Groundswell1.2 ft13 sNE