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
55 min ago
Systems named
293
Swell · wind sea
185 · 108
Seas crossing
8 buoys
Storms, last month
204 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
Stonewall Bank, OR 46050 · Pacific Northwest · 55 min ago
  • Swell5.6 ft11 sWNW
  • Wind sea2.1 ft4 sNNW ↑ building
About 900 mi to the W (268°T)
Tillamook Bay South Jetty, OR 46278 · Pacific Northwest · 1 h ago
  • Swell5.7 ft12 sWNW
  • Wind sea2.0 ft4 sNW new
About 2750 mi to the WNW (289°T)
Tillamook, OR 46089 · Pacific Northwest · 55 min ago
  • Swell6.4 ft11 sWNW
About 1300 mi to the WSW (257°T)
Umpqua, OR Offshore 46229 · Pacific Northwest · 1 h ago
  • Swell5.5 ft11 sWNW ↓ fading
  • Wind sea2.4 ft4 sN new
  • Swell1.9 ft12 sSW new
About 2800 mi to the WNW (295°T)
West Oregon 46002 · Pacific Northwest · 55 min ago
  • Swell5.9 ft10 sWNW
West Washington 46005 · Pacific Northwest · 55 min ago
  • Swell4.7 ft9 sNW
  • Wind sea3.4 ft4 sSW new
  • Swell1.9 ft11 sSSE ↓ fading
  • +1 more
75° apart
Albatross Bank, AK 46078 · Alaska · 55 min ago
  • Wind sea5.9 ft7 sWSW ↓ fading
  • Swell2.3 ft7 sNW new
About 2400 mi to the WSW (239°T)
Cape Cleare, AK 46076 · Alaska · 55 min ago
  • Swell2.6 ft7 sSW new
  • Wind sea2.2 ft4 sWSW new
  • Groundswell0.9 ft15 sSSE new
Cape Edgecumbe, AK 46084 · Alaska · 55 min ago
  • Swell5.5 ft8 sWSW ↓ fading
About 800 mi to the WSW (245°T)
Cape Suckling, AK 46082 · Alaska · 55 min ago
  • Swell4.8 ft9 sSW ↑ building
  • Swell2.7 ft5 sENE
150° apart
Central Aleutians, AK 46072 · Alaska · 55 min ago
  • Swell9.3 ft8 sSSE ↑ building
Central Bering Sea, AK Offshore 46035 · Alaska · 55 min ago
  • Wind sea8.6 ft8 sENE ↑ building
Central Gulf of Alaska 46085 · Alaska · 55 min ago
  • Wind sea7.3 ft7 sW
About 450 mi to the WSW (243°T)
Fairweather Ground, AK 46083 · Alaska · 55 min ago
  • Swell4.5 ft9 sWSW
  • Wind sea3.1 ft5 sSSW new
  • Groundswell1.3 ft15 sSSW new
50° apartAbout 450 mi to the WSW (244°T)
Lower Cook Inlet, AK 46108 · Alaska · 1 h ago
  • Wind sea2.8 ft5 sWSW ↓ fading
Portlock Bank, AK 46080 · Alaska · 1 h ago
  • Swell3.6 ft7 sSSW
  • Wind sea2.9 ft6 sWNW new
  • Groundswell1.2 ft15 sWSW new
About 2200 mi to the SSW (208°T)
Seal Rocks, AK 46061 · Alaska · 55 min ago
  • Wind sea1.8 ft5 sSE ↑ building
  • Swell1.5 ft9 sSSW ↓ fading
  • Swell1.2 ft6 sSSW new
About 500 mi to the SE (131°T)
Shelikof Strait, AK 46077 · Alaska · 55 min ago
  • Wind sea2.9 ft5 sSW new
Shumagin Islands, AK 46075 · Alaska · 55 min ago
  • Wind sea3.8 ft6 sWSW
  • Groundswell1.1 ft15 sESE ↑ building
  • Groundswell0.9 ft14 sW new
South Kodiak, AK 46066 · Alaska · 55 min ago
  • Swell4.4 ft6 sWNW ↓ fading
  • Groundswell1.8 ft15 sS ↑ building
  • Wind sea1.6 ft3 sWSW new