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 164
Newest spectrum
34 min ago
Systems named
309
Swell · wind sea
215 · 94
Seas crossing
7 buoys
Storms, last month
214 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
Southeast Bering Sea, AK 46073 · Alaska No spectrum in the last six hours
Southwest Bering Sea, AK 46070 · Alaska · 44 min ago
  • Wind sea5.5 m11 sE
W Aleutians (Amchitka), AK 46071 · Alaska · 44 min ago
  • Swell2.3 m11 sSSW ↓ fading
  • Swell1.8 m11 sSSE new
60° apart
W Gulf of Alaska 46001 · Alaska · 1 h ago
  • Wind sea1.8 m7 sWSW ↓ fading
  • Groundswell0.5 m14 sS new
About 2450 nmi to the WSW (238°T)
West Orca Bay, AK 46060 · Alaska · 1 h ago
  • Swell0.4 m4 sE ↓ fading
  • Swell0.3 m6 sSSE new
  • Swell0.2 m8 sSW ↓ fading
About 650 nmi to the S (180°T)
Western Prince William Sound 46081 · Alaska · 44 min agoCalm: no wave system large enough to name
Barbers Point, Kalaeloa, HI (238) 51212 · Hawaii · 1 h ago
  • Wind sea1.3 m6 sS
  • Groundswell0.7 m14 sS ↑ building
Hilo, HI 51206 · Hawaii · 34 min ago
  • Wind sea1.4 m9 sE
  • Swell0.8 m11 sESE new
About 2200 nmi to the NNW (328°T)
Mokapu Point, Oahu, HI 51202 · Hawaii · 1 h ago
  • Wind sea1.4 m10 sE
NW Hawaii - 200 NM NW of Kauai 51001 · Hawaii · 44 min ago
  • Wind sea2.2 m7 sESE
  • Swell1.1 m8 sS new
About 750 nmi to the S (180°T)
Northern Hawaii One 51000 · Hawaii · 44 min ago
  • Swell1.6 m8 sE
  • Groundswell0.4 m14 sS new
Northwestern Hawaii Two 51101 · Hawaii · 44 min ago
  • Wind sea2.5 m8 sESE
About 1300 nmi to the SSE (152°T)
Pauwela, Maui, HI 51205 · Hawaii · 1 h ago
  • Wind sea1.3 m9 sE ↑ building
  • Swell0.6 m10 sNW new
  • Swell0.3 m12 sENE ↓ fading
About 1500 nmi to the NW (325°T)
Pearl Harbor Entrance, HI (233) 51211 · Hawaii · 1 h ago
  • Wind sea1.1 m6 sSSE
  • Groundswell0.6 m14 sSSE
SE Hawaii - 200 NM SE of Hilo 51004 · Hawaii · 44 min ago
  • Swell1.6 m9 sENE
  • Swell0.7 m13 sSW ↓ fading
SW Hawaii - 200 NM SW of Kona 51002 · Hawaii · 1 h ago
  • Groundswell1.0 m14 sESE
  • Swell0.8 m10 sWNW ↓ fading
  • Wind sea0.4 m4 sE new
About 450 nmi to the E (093°T)
Waimea Bay, HI 51201 · Hawaii · 34 min ago
  • Wind sea0.9 m10 sSE new
Western Hawaii 51003 · Hawaii · 44 min ago
  • Wind sea1.3 m6 sESE ↑ building
  • Swell1.1 m11 sNW ↑ building
  • Swell1.0 m13 sSSE ↑ building
  • +1 more
175° apart
Aunuu, American Samoa 51209 · Pacific islands · 34 min ago
  • Wind sea3.3 m9 sSE
King-Poloa, American Samoa 51214 · Pacific islands · 1 h ago
  • Wind sea2.2 m9 sSSE