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
50 min ago
Systems named
301
Swell · wind sea
193 · 108
Seas crossing
7 buoys
Storms, last month
206 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 · 1 h agoCalm: no wave system large enough to name
East Superior 45004 · Great Lakes · 1 h ago
  • Swell0.3 m4 sW ↓ fading
  • Swell0.2 m4 sESE new
Grand Island North, MI 45211 · Great Lakes · 50 min ago
  • Wind sea0.5 m3 sS new
McGulpin Point North, MI 45194 · Great Lakes · 1 h ago
  • Wind sea0.2 m4 sE new
Mid Superior 45001 · Great Lakes · 1 h ago
  • Wind sea0.4 m4 sSW new
North Michigan 45002 · Great Lakes · 1 h ago
  • Wind sea0.9 m6 sSSW ↓ fading
Oswego, NY 45215 · Great Lakes · 50 min agoCalm: no wave system large enough to name
Rawley Point East, WI 45210 · Great Lakes · 50 min ago
  • Wind sea1.2 m6 sS
West Superior 45006 · Great Lakes · 1 h agoCalm: no wave system large enough to name