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
36 min ago
Systems named
310
Swell · wind sea
215 · 95
Seas crossing
8 buoys
Storms, last month
213 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 · 56 min ago
  • Wind sea1.4 m6 sS
  • Groundswell0.7 m14 sS
Hilo, HI 51206 · Hawaii · 56 min ago
  • Swell1.6 m11 sE
About 2200 nmi to the NNW (328°T)
Mokapu Point, Oahu, HI 51202 · Hawaii · 56 min ago
  • Wind sea1.4 m10 sE
  • Swell0.5 m12 sE new
NW Hawaii - 200 NM NW of Kauai 51001 · Hawaii · 36 min ago
  • Wind sea2.5 m8 sSE
  • Groundswell0.6 m13 sE new
About 750 nmi to the S (180°T)
Northern Hawaii One 51000 · Hawaii · 36 min ago
  • Swell1.6 m12 sE
  • Swell0.5 m11 sWNW new
Northwestern Hawaii Two 51101 · Hawaii · 36 min ago
  • Wind sea2.7 m8 sSE
  • Swell0.9 m13 sESE new
About 1300 nmi to the SSE (152°T)
Pauwela, Maui, HI 51205 · Hawaii · 56 min ago
  • Wind sea1.4 m9 sE
  • Swell0.5 m11 sNW ↓ fading
About 1500 nmi to the NW (325°T)
Pearl Harbor Entrance, HI (233) 51211 · Hawaii · 56 min ago
  • Wind sea1.1 m6 sS
  • Groundswell0.6 m14 sSSE
SE Hawaii - 200 NM SE of Hilo 51004 · Hawaii · 36 min ago
  • Swell1.5 m9 sENE
  • Groundswell1.0 m14 sSSW ↑ building
  • Swell0.6 m10 sW ↑ building
120° apartAbout 2350 nmi to the NNW (339°T)
SW Hawaii - 200 NM SW of Kona 51002 · Hawaii · 36 min ago
  • Swell1.2 m10 sESE new
  • Wind sea0.5 m3 sE new
  • Groundswell0.5 m13 sW new
About 2100 nmi to the WNW (303°T)
Waimea Bay, HI 51201 · Hawaii · 56 min ago
  • Wind sea0.9 m7 sNE
  • Swell0.3 m10 sWNW new
Western Hawaii 51003 · Hawaii · 36 min ago
  • Wind sea1.4 m5 sSSE ↑ building
  • Swell1.3 m9 sWNW ↑ building
  • Swell1.1 m11 sSE new
130° apart