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
52 min ago
Systems named
313
Swell · wind sea
209 · 104
Seas crossing
7 buoys
Storms, last month
187 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
St. Augustine, FL (194) 41117 · Eastern Seaboard South · 1 h ago
  • Wind sea0.5 m9 sE ↑ building
  • Groundswell0.2 m16 sENE new
About 5900 km to the ENE (063°T)
West Bermuda 41048 · Eastern Seaboard South · 52 min ago
  • Swell0.6 m12 sE
  • Swell0.5 m8 sNE ↓ fading
  • Swell0.4 m6 sS ↓ fading
  • +1 more
About 2950 km to the ENE (061°T)