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
31 min ago
Systems named
311
Swell · wind sea
211 · 100
Seas crossing
7 buoys
Storms, last month
191 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
East Lake Ontario 45012 · Great Lakes · 31 min ago
  • Swell0.5 ft2 sE new
East Superior 45004 · Great Lakes · 31 min ago
  • Wind sea1.9 ft4 sSSW ↓ fading
Grand Island North, MI 45211 · Great Lakes · 51 min ago
  • Wind sea1.6 ft3 sSSW new
Mid Superior 45001 · Great Lakes · 31 min ago
  • Wind sea2.2 ft4 sWSW new
  • Swell1.7 ft5 sSSE ↓ fading
North Michigan 45002 · Great Lakes · 31 min ago
  • Wind sea5.0 ft6 sSSW
  • Swell1.5 ft6 sW new
Oswego, NY 45215 · Great Lakes · 51 min agoCalm: no wave system large enough to name
Rawley Point East, WI 45210 · Great Lakes · 51 min ago
  • Wind sea4.4 ft5 sS
West Superior 45006 · Great Lakes · 31 min ago
  • Swell0.7 ft3 sSSW ↓ fading
  • Swell0.6 ft3 sW new