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
59 min ago
Systems named
312
Swell · wind sea
200 · 112
Seas crossing
9 buoys
Storms, last month
179 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
Barbers Point, Kalaeloa, HI (238) 51212 · Hawaii · 1 h ago
  • Wind sea1.4 m9 sSSW
  • Groundswell0.7 m16 sS
About 1100 nmi to the S (187°T)
Hilo, HI 51206 · Hawaii · 1 h ago
  • Wind sea1.9 m9 sENE
  • Swell0.5 m12 sNNW
About 2200 nmi to the NNW (328°T)
Mokapu Point, Oahu, HI 51202 · Hawaii · 1 h ago
  • Wind sea2.1 m8 sE
NW Hawaii - 200 NM NW of Kauai 51001 · Hawaii · 59 min ago
  • Swell3.0 m9 sESE
About 800 nmi to the S (180°T)
Northern Hawaii One 51000 · Hawaii · 1 h ago
  • Wind sea2.1 m8 sE
  • Swell0.8 m12 sN
Northwestern Hawaii Two 51101 · Hawaii · 59 min ago
  • Wind sea2.8 m7 sESE new
About 1300 nmi to the SSE (152°T)
Pauwela, Maui, HI 51205 · Hawaii · 1 h ago
  • Wind sea1.9 m8 sENE
  • Groundswell0.8 m13 sNW
About 2450 nmi to the NW (326°T)
Pearl Harbor Entrance, HI (233) 51211 · Hawaii · 1 h ago
  • Wind sea1.2 m7 sSSE ↑ building
  • Groundswell0.3 m16 sS ↓ fading
SE Hawaii - 200 NM SE of Hilo 51004 · Hawaii · 59 min ago
  • Swell2.1 m9 sE
  • Groundswell1.0 m14 sNNW new
SW Hawaii - 200 NM SW of Kona 51002 · Hawaii · 1 h ago
  • Swell1.2 m7 sESE ↑ building
  • Groundswell1.0 m15 sSSE
  • Wind sea0.7 m5 sE ↑ building
  • +2 more
50° apart
Waimea Bay, HI 51201 · Hawaii · 1 h ago
  • Wind sea1.2 m8 sNNE ↓ fading
  • Swell0.5 m12 sNW
About 2250 nmi to the NW (325°T)
Western Hawaii 51003 · Hawaii · 59 min ago
  • Swell1.8 m8 sESE ↓ fading
  • Swell1.6 m11 sWNW ↓ fading
  • Swell0.9 m7 sSW new
  • +2 more
175° apart