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
36 min ago
Systems named
310
Swell · wind sea
201 · 109
Seas crossing
7 buoys
Storms, last month
206 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 · 46 min ago
  • Swell5.9 ft9 sWNW
  • Wind sea2.0 ft4 sN new
About 900 mi to the W (268°T)
Tillamook Bay South Jetty, OR 46278 · Pacific Northwest · 1 h ago
  • Swell5.3 ft12 sWNW
  • Wind sea3.5 ft8 sWNW new
About 2750 mi to the WNW (289°T)
Tillamook, OR 46089 · Pacific Northwest · 46 min ago
  • Swell5.6 ft11 sWNW ↓ fading
About 1400 mi to the W (259°T)
Umpqua, OR Offshore 46229 · Pacific Northwest · 36 min ago
  • Swell6.0 ft12 sWNW
  • Wind sea3.1 ft5 sN new
About 2850 mi to the WNW (296°T)
West Oregon 46002 · Pacific Northwest · 46 min ago
  • Swell4.6 ft9 sWNW ↓ fading
  • Groundswell1.8 ft15 sSSW
  • Swell1.3 ft4 sW new
About 4050 mi to the WNW (297°T)
West Washington 46005 · Pacific Northwest · 46 min ago
  • Swell5.1 ft9 sWNW
  • Wind sea3.7 ft6 sSW new
70° apart
Albatross Bank, AK 46078 · Alaska · 46 min ago
  • Wind sea4.8 ft7 sWSW
  • Swell2.3 ft8 sSSW new
  • Groundswell1.4 ft15 sS new
About 2300 mi to the WSW (240°T)
Cape Cleare, AK 46076 · Alaska · 46 min ago
  • Swell3.5 ft6 sSW ↑ building
  • Swell1.8 ft10 sS ↑ building
Cape Edgecumbe, AK 46084 · Alaska · 46 min ago
  • Swell5.5 ft9 sWSW
  • Wind sea2.0 ft4 sSSW new
About 800 mi to the WSW (245°T)
Cape Suckling, AK 46082 · Alaska · 46 min ago
  • Swell4.9 ft8 sSSW
  • Swell1.9 ft5 sE ↓ fading
About 3000 mi to the SSW (213°T)
Central Aleutians, AK 46072 · Alaska · 46 min ago
  • Swell10.0 ft9 sS
  • Wind sea7.3 ft7 sENE new
95° apart
Central Bering Sea, AK Offshore 46035 · Alaska · 46 min ago
  • Wind sea8.5 ft7 sENE new
  • Swell4.1 ft8 sSE new
Central Gulf of Alaska 46085 · Alaska · 46 min ago
  • Wind sea6.6 ft8 sW
Fairweather Ground, AK 46083 · Alaska · 46 min ago
  • Swell6.2 ft8 sSW
About 450 mi to the WSW (244°T)
Lower Cook Inlet, AK 46108 · Alaska · 1 h ago
  • Wind sea4.7 ft6 sWSW new
Portlock Bank, AK 46080 · Alaska · 46 min ago
  • Swell3.9 ft8 sSSW
  • Swell3.3 ft6 sNW ↑ building
110° apartAbout 1050 mi to the SE (125°T)
Seal Rocks, AK 46061 · Alaska · 46 min ago
  • Swell2.0 ft8 sSSW ↑ building
  • Swell1.6 ft5 sSE
  • Wind sea0.8 ft3 sNE new
Shelikof Strait, AK 46077 · Alaska · 46 min ago
  • Wind sea2.9 ft6 sSSW
Shumagin Islands, AK 46075 · Alaska · 46 min ago
  • Swell3.4 ft6 sWSW
  • Groundswell1.2 ft15 sSE ↑ building
  • Swell0.9 ft4 sWNW new
South Kodiak, AK 46066 · Alaska · 46 min ago
  • Swell3.3 ft7 sW ↓ fading
  • Groundswell1.5 ft16 sS
  • Swell1.4 ft4 sWNW new