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
26 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 4 m); its width is the directional spread. Swell Wind sea Storm placed

StationSystems nowSeas crossingStorm placed
East Lake Ontario 45012 · Great Lakes · 36 min ago
  • Wind sea0.5 m4 sS ↓ fading
East Superior 45004 · Great Lakes · 36 min ago
  • Wind sea1.0 m4 sWNW new
Grand Island North, MI 45211 · Great Lakes · 26 min ago
  • Swell1.2 m5 sNW new
  • Swell0.6 m3 sNW new
McGulpin Point North, MI 45194 · Great Lakes · 26 min ago
  • Wind sea0.3 m3 sW
Mid Superior 45001 · Great Lakes · 36 min ago
  • Wind sea0.6 m4 sNW ↓ fading
North Michigan 45002 · Great Lakes · 36 min ago
  • Swell0.5 m6 sSSW ↓ fading
  • Wind sea0.2 m2 sSSW new
Oswego, NY 45215 · Great Lakes · 26 min ago
  • Swell0.3 m3 sWSW new
  • Swell0.2 m2 sS ↓ fading
  • Swell0.2 m4 sWNW new
Rawley Point East, WI 45210 · Great Lakes · 26 min ago
  • Wind sea0.5 m3 sWNW new
West Superior 45006 · Great Lakes · 36 min ago
  • Wind sea0.4 m4 sW
  • Swell0.2 m3 sN ↓ fading