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
54 min ago
Systems named
321
Swell · wind sea
214 · 107
Seas crossing
6 buoys
Storms, last month
189 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
Grand Island North, MI 45211 · Great Lakes · 1 h ago
  • Wind sea0.6 m4 sSSW ↓ fading
Mid Superior 45001 · Great Lakes · 54 min ago
  • Wind sea0.7 m4 sSW ↑ building
  • Swell0.6 m5 sSSE new
North Michigan 45002 · Great Lakes · 54 min ago
  • Wind sea1.6 m6 sSSW ↑ building
Oswego, NY 45215 · Great Lakes · 3 h ago
  • Wind sea0.2 m2 sSSE new
Rawley Point East, WI 45210 · Great Lakes · 1 h ago
  • Wind sea1.3 m5 sSSW
West Superior 45006 · Great Lakes · 54 min ago
  • Wind sea0.3 m3 sSSW ↓ fading
  • Swell0.2 m3 sW new
Canaveral East, FL 41010 · Eastern Seaboard South · 54 min ago
  • Swell0.5 m9 sENE
  • Groundswell0.3 m13 sSE ↑ building
  • Swell0.2 m5 sE
  • +2 more
Canaveral, FL 41009 · Eastern Seaboard South · 54 min ago
  • Swell0.3 m9 sENE
  • Wind sea0.2 m3 sSE new
Cape Canaveral Nearshore, FL 41113 · Eastern Seaboard South · 1 h ago
  • Wind sea0.3 m9 sE
Cape Hatteras East, NC (250) 41120 · Eastern Seaboard South · 1 h ago
  • Wind sea0.5 m8 sE
  • Groundswell0.4 m14 sESE ↑ building
About 2650 km to the ENE (057°T)
Diamond Shoals, NC 41025 · Eastern Seaboard South · 1 h ago
  • Swell0.4 m9 sE ↑ building
  • Swell0.3 m6 sENE new
  • Groundswell0.3 m15 sNE new
  • +2 more
About 1000 km to the E (099°T)
Duck FRF 26 m, NC 44100 · Eastern Seaboard South · 1 h ago
  • Wind sea0.5 m9 sE
  • Groundswell0.2 m13 sE
About 2800 km to the NE (051°T)
Duck FRF, NC 44056 · Eastern Seaboard South · 1 h ago
  • Wind sea0.5 m9 sE
  • Groundswell0.3 m14 sE
About 2800 km to the NE (053°T)
Edisto, SC 41004 · Eastern Seaboard South · 54 min ago
  • Swell0.3 m8 sE
  • Wind sea0.2 m3 sNE new
  • Groundswell0.2 m13 sESE
  • +1 more
Fernandina Beach, FL Offshore 41112 · Eastern Seaboard South · 1 h ago
  • Wind sea0.4 m9 sE
  • Groundswell0.1 m13 sESE ↓ fading
Fort Pierce, FL (134) 41114 · Eastern Seaboard South · 1 h ago
  • Wind sea0.4 m9 sENE
Frying Pan Shoals, NC 41013 · Eastern Seaboard South · 54 min ago
  • Wind sea0.3 m3 sNNE new
  • Groundswell0.3 m16 sSSE new
  • Swell0.2 m9 sENE new
  • +2 more
Grays Reef, GA 41008 · Eastern Seaboard South · 54 min ago
  • Swell0.3 m10 sNNE new
  • Swell0.3 m3 sE
  • Groundswell0.2 m16 sE
Hollywood Beach, FL (265) 41122 · Eastern Seaboard South · 1 h ago
  • Wind sea0.4 m2 sE new
Masonboro Inlet, ILM2, NC (150) 41110 · Eastern Seaboard South · 1 h ago
  • Wind sea0.4 m8 sESE
  • Groundswell0.2 m14 sESE ↑ building
About 8900 km to the ESE (101°T)