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
45 min ago
Systems named
321
Swell · wind sea
214 · 107
Seas crossing
6 buoys
Storms, last month
189 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 · 45 min ago
  • Wind sea2.1 m6 sE ↑ building
W Aleutians (Amchitka), AK 46071 · Alaska · 45 min ago
  • Swell3.6 m9 sS new
About 600 nmi to the S (181°T)
W Gulf of Alaska 46001 · Alaska · 1 h ago
  • Wind sea2.0 m8 sWSW
West Orca Bay, AK 46060 · Alaska · 45 min ago
  • Wind sea0.4 m3 sE new
  • Swell0.2 m9 sSW
  • Swell0.2 m10 sE new
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 · 1 h ago
  • Wind sea1.5 m9 sE ↓ fading
  • Swell0.6 m12 sE new
  • Swell0.6 m12 sNNW
About 2200 nmi to the NNW (326°T)
Mokapu Point, Oahu, HI 51202 · Hawaii · 1 h ago
  • Wind sea1.6 m10 sENE ↓ fading
  • Swell0.6 m12 sE new
NW Hawaii - 200 NM NW of Kauai 51001 · Hawaii · 45 min ago
  • Wind sea3.8 m9 sESE
About 750 nmi to the S (180°T)
Northern Hawaii One 51000 · Hawaii · 45 min ago
  • Swell1.6 m9 sE
  • Wind sea0.7 m6 sSE ↓ fading
  • Swell0.6 m11 sWSW new
Northwestern Hawaii Two 51101 · Hawaii · 45 min ago
  • Wind sea2.9 m9 sE ↓ fading
  • Swell1.9 m8 sSSE new
70° apartAbout 1300 nmi to the SSE (152°T)
Pauwela, Maui, HI 51205 · Hawaii · 1 h ago
  • Wind sea1.4 m9 sENE ↓ fading
  • Swell0.6 m11 sNNW new
  • Swell0.6 m12 sENE new
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 · 45 min ago
  • Swell2.0 m9 sENE
  • Groundswell0.8 m14 sSE ↓ fading
  • Swell0.6 m5 sESE new
About 2100 nmi to the NNW (336°T)
SW Hawaii - 200 NM SW of Kona 51002 · Hawaii · 45 min ago
  • Swell1.3 m11 sESE ↑ building
  • Swell1.1 m11 sNW ↑ building
  • Wind sea0.5 m4 sE
160° apartAbout 2350 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 · 45 min ago
  • Swell1.4 m10 sNW
  • Wind sea1.2 m5 sS ↓ fading
  • Swell1.0 m7 sE
  • +1 more
120° apart
Aunuu, American Samoa 51209 · Pacific islands · 1 h ago
  • Wind sea2.7 m8 sESE
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