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
30 min ago
Systems named
307
Swell · wind sea
195 · 112
Seas crossing
9 buoys
Storms, last month
176 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 sea1.5 m10 sSSW
  • Groundswell0.6 m16 sS ↑ building
Hilo, HI 51206 · Hawaii · 30 min ago
  • Wind sea1.9 m9 sENE
  • Swell0.5 m12 sNNW
About 4100 km to the NNW (326°T)
Mokapu Point, Oahu, HI 51202 · Hawaii · 1 h ago
  • Wind sea1.9 m9 sE
NW Hawaii - 200 NM NW of Kauai 51001 · Hawaii · 40 min ago
  • Swell2.9 m10 sESE
About 1400 km to the S (180°T)
Northern Hawaii One 51000 · Hawaii · 40 min ago
  • Swell2.0 m9 sE
  • Swell0.9 m12 sNNW
Northwestern Hawaii Two 51101 · Hawaii · 40 min ago
  • Wind sea2.3 m9 sE new
  • Swell1.5 m8 sSSE ↓ fading
70° apartAbout 2450 km to the SSE (152°T)
Pauwela, Maui, HI 51205 · Hawaii · 30 min ago
  • Wind sea1.9 m8 sENE
  • Swell0.8 m12 sNW ↓ fading
About 4550 km to the NW (325°T)
Pearl Harbor Entrance, HI (233) 51211 · Hawaii · 1 h ago
  • Wind sea1.0 m6 sSSE ↓ fading
  • Swell0.7 m12 sS ↑ building
SE Hawaii - 200 NM SE of Hilo 51004 · Hawaii · 40 min ago
  • Swell1.8 m9 sENE ↓ fading
  • Swell1.2 m13 sENE new
  • Groundswell0.7 m14 sSW new
About 4000 km to the N (353°T)
SW Hawaii - 200 NM SW of Kona 51002 · Hawaii · 1 h ago
  • Groundswell1.4 m15 sESE new
  • Groundswell0.9 m13 sNW
  • Wind sea0.5 m4 sE new
  • +1 more
160° apart
Waimea Bay, HI 51201 · Hawaii · 1 h ago
  • Wind sea1.3 m7 sNNE
  • Swell0.5 m12 sNNW
Western Hawaii 51003 · Hawaii · 40 min ago
  • Wind sea2.1 m7 sESE
  • Swell1.8 m10 sWNW
  • Swell1.1 m6 sSSW new
175° apart