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
160 of 163
Newest spectrum
55 min ago
Systems named
296
Swell · wind sea
199 · 97
Seas crossing
5 buoys
Storms, last month
198 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
Tillamook Bay South Jetty, OR 46278 · Pacific Northwest · 1 h ago
  • Swell1.6 m11 sWNW
About 2400 nmi to the WNW (288°T)
Tillamook, OR 46089 · Pacific Northwest · 55 min ago
  • Swell2.0 m12 sNW
About 1150 nmi to the WSW (256°T)
Umpqua, OR Offshore 46229 · Pacific Northwest · 1 h ago
  • Swell1.8 m12 sNW ↑ building
About 2500 nmi to the WNW (295°T)
West Oregon 46002 · Pacific Northwest · 55 min ago
  • Swell2.1 m11 sWNW
West Washington 46005 · Pacific Northwest · 55 min ago
  • Swell1.5 m10 sWNW
  • Swell0.8 m4 sSE ↓ fading
  • Swell0.7 m11 sE new
150° apart
Albatross Bank, AK 46078 · Alaska · 55 min ago
  • Wind sea1.9 m6 sWSW new
About 2450 nmi to the WSW (238°T)
Cape Cleare, AK 46076 · Alaska · 55 min ago
  • Swell0.8 m8 sS new
  • Swell0.8 m6 sSW ↓ fading
  • Swell0.3 m13 sNE new
Cape Edgecumbe, AK 46084 · Alaska · 55 min ago
  • Swell1.8 m9 sWSW
  • Swell0.8 m7 sSSE new
About 700 nmi to the WSW (245°T)
Cape Suckling, AK 46082 · Alaska · 55 min ago
  • Swell1.2 m10 sSW
  • Swell0.8 m5 sE ↑ building
Central Aleutians, AK 46072 · Alaska · 55 min ago
  • Swell1.6 m6 sS new
  • Groundswell0.4 m16 sSSE
Central Bering Sea, AK Offshore 46035 · Alaska · 55 min ago
  • Wind sea1.6 m6 sE ↑ building
  • Swell1.3 m7 sNNE new
80° apart
Central Gulf of Alaska 46085 · Alaska · 55 min ago
  • Wind sea2.1 m8 sW ↑ building
About 550 nmi to the WSW (243°T)
Fairweather Ground, AK 46083 · Alaska · 55 min ago
  • Swell1.6 m8 sSW
About 400 nmi to the WSW (244°T)
Lower Cook Inlet, AK 46108 · Alaska · 2 h ago
  • Wind sea0.8 m7 sSW new
Portlock Bank, AK 46080 · Alaska · 55 min ago
  • Swell1.2 m8 sSW ↑ building
  • Swell0.5 m12 sSSE new
  • Wind sea0.4 m4 sWNW new
About 2100 nmi to the SSW (207°T)
Seal Rocks, AK 46061 · Alaska · 55 min ago
  • Swell1.0 m7 sSSW
  • Swell0.3 m12 sS new
About 350 nmi to the ESE (119°T)
Shelikof Strait, AK 46077 · Alaska · 55 min ago
  • Wind sea0.9 m5 sSW new
Shumagin Islands, AK 46075 · Alaska · 55 min ago
  • Wind sea1.0 m6 sWSW new
  • Swell0.8 m7 sW ↓ fading
  • Groundswell0.4 m15 sSW
South Kodiak, AK 46066 · Alaska · 55 min ago
  • Swell1.4 m7 sWNW ↑ building
  • Groundswell0.5 m15 sS new
  • Wind sea0.4 m4 sWSW new
Southeast Bering Sea, AK 46073 · Alaska No spectrum in the last six hours