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 163
Newest spectrum
41 min ago
Systems named
312
Swell · wind sea
203 · 109
Seas crossing
6 buoys
Storms, last month
190 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
Southwest Bering Sea, AK 46070 · Alaska · 51 min ago
  • Wind sea2.2 m6 sE ↑ building
W Aleutians (Amchitka), AK 46071 · Alaska · 51 min ago
  • Swell3.5 m10 sS new
W Gulf of Alaska 46001 · Alaska · 1 h ago
  • Wind sea2.1 m7 sWSW
  • Swell0.9 m7 sNW new
West Orca Bay, AK 46060 · Alaska · 51 min ago
  • Wind sea0.5 m3 sENE new
  • Swell0.3 m9 sS ↑ building
About 650 nmi to the S (180°T)
Western Prince William Sound 46081 · Alaska · 1 h agoCalm: no wave system large enough to name
Barbers Point, Kalaeloa, HI (238) 51212 · Hawaii · 1 h ago
  • Wind sea1.4 m7 sS ↑ building
  • Groundswell0.8 m15 sS ↑ building
About 1150 nmi to the S (188°T)
Hilo, HI 51206 · Hawaii · 41 min ago
  • Wind sea1.7 m9 sE
  • Swell0.6 m12 sNNW
About 2200 nmi to the NW (326°T)
Mokapu Point, Oahu, HI 51202 · Hawaii · 41 min ago
  • Wind sea1.6 m9 sENE new
  • Swell0.6 m13 sE new
NW Hawaii - 200 NM NW of Kauai 51001 · Hawaii · 51 min ago
  • Wind sea3.5 m9 sESE
About 750 nmi to the S (180°T)
Northern Hawaii One 51000 · Hawaii · 51 min ago
  • Swell1.6 m9 sESE new
  • Wind sea0.7 m6 sSE
  • Swell0.7 m11 sNNW new
  • +1 more
Northwestern Hawaii Two 51101 · Hawaii · 51 min ago
  • Wind sea3.3 m7 sE new
  • Swell1.9 m9 sS new
75° apartAbout 1300 nmi to the SSE (152°T)
Pauwela, Maui, HI 51205 · Hawaii · 41 min ago
  • Wind sea1.6 m9 sENE
  • Swell0.6 m12 sNNW
Pearl Harbor Entrance, HI (233) 51211 · Hawaii · 1 h ago
  • Wind sea1.4 m6 sSSE ↑ building
  • Groundswell0.6 m16 sSSE
SE Hawaii - 200 NM SE of Hilo 51004 · Hawaii · 51 min ago
  • Swell1.8 m9 sENE
  • Groundswell0.8 m14 sSSW new
  • Wind sea0.6 m5 sENE ↓ fading
About 2250 nmi to the N (352°T)
SW Hawaii - 200 NM SW of Kona 51002 · Hawaii · 51 min ago
  • Swell1.3 m10 sWNW ↑ building
  • Swell1.0 m9 sE ↓ fading
  • Wind sea0.7 m4 sESE new
  • +1 more
155° apartAbout 2250 nmi to the NW (310°T)
Waimea Bay, HI 51201 · Hawaii · 1 h ago
  • Wind sea1.2 m7 sNNE new
  • Swell0.5 m11 sWNW
Western Hawaii 51003 · Hawaii · 51 min ago
  • Swell1.5 m7 sSE new
  • Swell1.4 m10 sWNW
  • Groundswell0.8 m13 sSSE ↓ fading
165° apart
Aunuu, American Samoa 51209 · Pacific islands · 41 min ago
  • Wind sea2.5 m8 sESE
  • Swell0.6 m12 sSE ↓ fading
King-Poloa, American Samoa 51214 · Pacific islands · 1 h ago
  • Swell1.3 m12 sS ↓ fading
  • Wind sea1.1 m8 sENE ↑ building
110° apart
Ngaraard, Palau 52212 · Pacific islands · 1 h ago
  • Swell0.4 m10 sNNE
  • Wind sea0.3 m9 sSE new