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 163
Newest spectrum
57 min ago
Systems named
312
Swell · wind sea
212 · 100
Seas crossing
7 buoys
Storms, last month
184 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 · 1 h ago
  • Wind sea2.0 m8 sW
About 3000 nmi to the WSW (236°T)
Cape Cleare, AK 46076 · Alaska · 1 h ago
  • Swell1.4 m8 sSW new
  • Swell0.4 m11 sNE new
Cape Edgecumbe, AK 46084 · Alaska · 1 h ago
  • Swell2.3 m10 sWSW
About 700 nmi to the WSW (245°T)
Cape Suckling, AK 46082 · Alaska · 1 h ago
  • Swell1.2 m10 sSW ↓ fading
  • Swell0.6 m5 sESE new
Central Aleutians, AK 46072 · Alaska · 1 h ago
  • Swell0.9 m5 sWSW new
  • Swell0.5 m6 sN
Central Bering Sea, AK Offshore 46035 · Alaska · 1 h ago
  • Swell1.1 m6 sW ↓ fading
  • Swell0.4 m7 sNNE ↑ building
Central Gulf of Alaska 46085 · Alaska · 1 h ago
  • Swell2.1 m9 sWSW
  • Wind sea0.7 m5 sWNW new
About 550 nmi to the WSW (245°T)
Fairweather Ground, AK 46083 · Alaska · 1 h ago
  • Swell1.7 m9 sSW
  • Wind sea0.5 m3 sSE new
About 400 nmi to the WSW (244°T)
Lower Cook Inlet, AK 46108 · Alaska · 1 h ago
  • Wind sea0.8 m5 sSW ↓ fading
Portlock Bank, AK 46080 · Alaska · 1 h ago
  • Swell1.1 m7 sNNW ↓ fading
  • Swell1.1 m7 sSSW new
125° apart
Seal Rocks, AK 46061 · Alaska · 1 h ago
  • Swell0.7 m10 sSSW new
  • Swell0.5 m7 sSE ↓ fading
  • Wind sea0.2 m3 sSSE new
Shelikof Strait, AK 46077 · Alaska · 1 h ago
  • Wind sea1.4 m6 sSW
Shumagin Islands, AK 46075 · Alaska · 1 h ago
  • Wind sea1.4 m6 sW ↑ building
  • Groundswell0.5 m16 sS new
South Kodiak, AK 46066 · Alaska · 1 h ago
  • Wind sea1.5 m8 sWNW
Southeast Bering Sea, AK 46073 · Alaska No spectrum in the last six hours
Southwest Bering Sea, AK 46070 · Alaska · 1 h ago
  • Swell0.8 m7 sNNW new
  • Wind sea0.6 m3 sESE new
W Aleutians (Amchitka), AK 46071 · Alaska · 1 h ago
  • Wind sea1.2 m6 sSSE ↑ building
  • Swell0.4 m10 sSE
W Gulf of Alaska 46001 · Alaska · 1 h ago
  • Swell1.8 m9 sWSW
  • Swell1.1 m7 sNNW new
80° apart
West Orca Bay, AK 46060 · Alaska · 1 h ago
  • Swell0.2 m10 sS
  • Swell0.2 m2 sE new
Western Prince William Sound 46081 · Alaska · 1 h agoCalm: no wave system large enough to name