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 162
Newest spectrum
30 min ago
Systems named
307
Swell · wind sea
195 · 112
Seas crossing
9 buoys
Storms, last month
176 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
Albatross Bank, AK 46078 · Alaska · 40 min ago
  • Wind sea2.1 m8 sW
About 6400 km to the SW (234°T)
Cape Cleare, AK 46076 · Alaska · 40 min ago
  • Swell0.7 m8 sWSW ↓ fading
  • Swell0.6 m9 sESE new
About 1400 km to the S (189°T)
Cape Edgecumbe, AK 46084 · Alaska · 40 min ago
  • Swell1.8 m10 sWSW ↓ fading
  • Swell0.6 m7 sSE new
  • Swell0.5 m11 sSE ↓ fading
  • +1 more
About 1300 km to the WSW (245°T)
Cape Suckling, AK 46082 · Alaska · 40 min ago
  • Swell1.4 m9 sSSW
Central Aleutians, AK 46072 · Alaska · 1 h ago
  • Swell0.7 m6 sN ↓ fading
  • Wind sea0.6 m5 sWSW new
  • Groundswell0.4 m16 sS new
  • +1 more
About 550 km to the NNW (331°T)
Central Bering Sea, AK Offshore 46035 · Alaska · 40 min ago
  • Swell1.2 m7 sW
  • Swell0.7 m6 sNNE new
Central Gulf of Alaska 46085 · Alaska · 40 min ago
  • Swell1.7 m10 sSW new
  • Wind sea1.4 m7 sWNW ↓ fading
50° apartAbout 1400 km to the WSW (245°T)
Fairweather Ground, AK 46083 · Alaska · 40 min ago
  • Swell1.9 m11 sSW ↑ building
About 750 km to the WSW (244°T)
Lower Cook Inlet, AK 46108 · Alaska · 2 h ago
  • Wind sea1.2 m6 sWSW
Portlock Bank, AK 46080 · Alaska · 1 h ago
  • Swell2.4 m8 sWNW ↑ building
Seal Rocks, AK 46061 · Alaska · 40 min ago
  • Swell0.6 m10 sSSW new
  • Swell0.3 m6 sSE new
  • Swell0.2 m12 sESE new
About 600 km to the ESE (119°T)
Shelikof Strait, AK 46077 · Alaska · 40 min ago
  • Wind sea1.4 m6 sSW ↑ building
Shumagin Islands, AK 46075 · Alaska · 40 min ago
  • Wind sea1.2 m6 sW ↑ building
  • Groundswell0.3 m17 sSE
About 3900 km to the WSW (246°T)
South Kodiak, AK 46066 · Alaska · 40 min ago
  • Wind sea1.4 m8 sW ↓ fading
  • Swell0.8 m7 sNNW new
  • Groundswell0.4 m17 sSSE new
70° apart
Southeast Bering Sea, AK 46073 · Alaska No spectrum in the last six hours
Southwest Bering Sea, AK 46070 · Alaska · 40 min ago
  • Swell0.5 m7 sWSW new
  • Swell0.3 m6 sN ↑ building
  • Groundswell0.3 m16 sSSE ↑ building
  • +1 more
W Aleutians (Amchitka), AK 46071 · Alaska · 40 min ago
  • Wind sea0.8 m5 sSSE new
  • Swell0.6 m7 sW ↑ building
  • Swell0.5 m11 sSE ↑ building
W Gulf of Alaska 46001 · Alaska · 40 min ago
  • Wind sea1.8 m8 sWSW
  • Swell0.8 m6 sNNW ↑ building
West Orca Bay, AK 46060 · Alaska · 40 min ago
  • Wind sea0.3 m3 sS new
  • Swell0.3 m8 sS new
Western Prince William Sound 46081 · Alaska · 40 min agoCalm: no wave system large enough to name