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 163
Newest spectrum
35 min ago
Systems named
298
Swell · wind sea
191 · 107
Seas crossing
4 buoys
Storms, last month
182 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
North Point, Pohnpei 52213 · Pacific islands · 55 min ago
  • Wind sea2.8 ft7 sWNW
  • Swell1.2 ft11 sSE ↓ fading
  • Groundswell0.8 ft14 sN new
Pikareej, Arno Atoll, Marshall Islands 52216 · Pacific islands · 55 min ago
  • Swell3.2 ft10 sENE
  • Wind sea1.7 ft8 sWNW new
About 2400 mi to the NW (323°T)
Rumung, Yap 52214 · Pacific islands · 55 min ago
  • Wind sea3.1 ft4 sW new
  • Swell2.6 ft10 sNNW