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 162
Newest spectrum
40 min ago
Systems named
315
Swell · wind sea
213 · 102
Seas crossing
14 buoys
Storms, last month
168 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
  • Swell1.2 m10 sSW ↑ building
  • Wind sea1.1 m7 sSSE
55° apartAbout 2150 nmi to the SSW (204°T)
Hilo, HI 51206 · Hawaii · 1 h ago
  • Wind sea1.8 m10 sENE
  • Swell0.7 m12 sNW ↑ building
About 1600 nmi to the NNW (329°T)
Mokapu Point, Oahu, HI 51202 · Hawaii · 1 h ago
  • Wind sea1.9 m9 sENE
NW Hawaii - 200 NM NW of Kauai 51001 · Hawaii · 40 min ago
  • Swell2.6 m9 sE
  • Swell1.4 m12 sSSE ↓ fading
  • Wind sea0.9 m4 sE new
Northern Hawaii One 51000 · Hawaii · 40 min ago
  • Swell2.1 m9 sE
  • Swell1.2 m12 sNNW
  • Swell0.6 m12 sSSE
110° apart
Northwestern Hawaii Two 51101 · Hawaii · 40 min ago
  • Wind sea2.6 m9 sE
  • Swell1.6 m12 sS ↓ fading
80° apart
Pauwela, Maui, HI 51205 · Hawaii · 1 h ago
  • Wind sea1.8 m9 sENE
  • Groundswell1.0 m13 sNNW
85° apartAbout 2450 nmi to the NW (326°T)
Pearl Harbor Entrance, HI (233) 51211 · Hawaii · 1 h ago
  • Wind sea1.2 m7 sSSE
  • Swell0.6 m13 sS ↑ building
SE Hawaii - 200 NM SE of Hilo 51004 · Hawaii · 40 min ago
  • Swell2.0 m8 sENE
  • Swell1.5 m12 sSSW ↑ building
125° apart
SW Hawaii - 200 NM SW of Kona 51002 · Hawaii · 40 min ago
  • Swell1.7 m8 sE
  • Swell0.9 m12 sSE new
  • Groundswell0.8 m13 sNW ↓ fading
  • +1 more
Waimea Bay, HI 51201 · Hawaii · 1 h ago
  • Wind sea1.3 m9 sNNE
  • Swell0.8 m13 sNNW ↓ fading
60° apartAbout 2250 nmi to the NW (323°T)
Western Hawaii 51003 · Hawaii · 40 min ago
  • Wind sea3.1 m8 sSE