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
162 of 164
Newest spectrum
44 min ago
Systems named
315
Swell · wind sea
218 · 97
Seas crossing
9 buoys
Storms, last month
223 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 13 ft); its width is the directional spread. Swell Wind sea Storm placed

StationSystems nowSeas crossingStorm placed
Harvest, CA (071) 46218 · California · 44 min ago
  • Swell5.8 ft10 sWNW
  • Groundswell2.2 ft15 sSSW new
About 1600 mi to the NW (305°T)
Leucadia Nearshore 46274 · California · 1 h ago
  • Wind sea1.5 ft9 sW new
  • Groundswell1.3 ft15 sSW ↓ fading
Long Beach Channel, CA 46256 · California · 1 h ago
  • Groundswell1.6 ft14 sS
  • Groundswell1.0 ft14 sNNW
  • Wind sea0.7 ft7 sWSW ↓ fading
Mission Bay West, CA 46258 · California · 44 min ago
  • Swell2.6 ft13 sWNW new
  • Groundswell1.4 ft13 sS ↓ fading
  • Groundswell1.0 ft15 sSW new
About 2950 mi to the WSW (242°T)
Monterey Canyon Outer, CA (156) 46236 · California · 1 h ago
  • Wind sea4.6 ft10 sWNW
  • Swell1.3 ft12 sSW new
Monterey, CA 46042 · California · 54 min ago
  • Swell6.1 ft9 sNW
  • Groundswell1.9 ft14 sSSW new
About 2900 mi to the NW (311°T)
Oceanside Offshore, CA 46224 · California · 44 min ago
  • Groundswell1.8 ft15 sSSW ↓ fading
  • Swell1.5 ft12 sW new
Point Arena, CA 46014 · California · 54 min ago
  • Swell8.7 ft9 sNW
About 1100 mi to the WNW (297°T)
Point Loma South, CA 46232 · California · 44 min ago
  • Wind sea2.5 ft10 sW new
  • Groundswell2.3 ft14 sSW new
About 2250 mi to the WSW (247°T)
Point Reyes, CA 46214 · California · 44 min ago
  • Swell7.2 ft11 sNW ↓ fading
About 3800 mi to the W (275°T)
Point Sur, CA (157) 46239 · California · 1 h ago
  • Wind sea6.4 ft9 sNW
  • Groundswell1.8 ft15 sSSW
About 3550 mi to the WNW (299°T)
Red Beach Nearshore 46275 · California · 1 h ago
  • Groundswell1.8 ft14 sSW
  • Wind sea1.1 ft9 sW ↓ fading
San Francisco, CA 46026 · California · 54 min ago
  • Swell5.2 ft8 sWNW
About 3200 mi to the W (263°T)
San Nicolas Island, CA 46219 · California · 1 h ago
  • Swell5.5 ft12 sWNW
  • Swell2.6 ft11 sSSW
About 2200 mi to the NW (307°T)
San Pedro South, CA 46253 · California · 44 min ago
  • Swell1.9 ft12 sW
  • Groundswell1.2 ft13 sSSE
  • Groundswell0.6 ft15 sNNW new
San Pedro, CA 46222 · California · 44 min ago
  • Groundswell1.9 ft13 sW
  • Groundswell1.2 ft14 sSSE ↑ building
Santa Cruz Basin, CA 46251 · California · 44 min ago
  • Swell2.7 ft12 sW ↑ building
  • Groundswell1.5 ft15 sSSW
Santa Lucia Escarpment, CA 46259 · California · 44 min ago
  • Wind sea5.0 ft9 sNW ↓ fading
  • Groundswell1.7 ft14 sSSW ↓ fading
About 3550 mi to the NW (304°T)
Santa Maria, CA 46011 · California · 54 min ago
  • Swell4.9 ft9 sNW ↓ fading
  • Groundswell1.8 ft14 sS
About 3250 mi to the NW (310°T)
Santa Monica Basin, CA 46025 · California · 54 min ago
  • Groundswell1.5 ft14 sS ↓ fading
  • Swell1.4 ft5 sW new
  • Swell1.2 ft12 sWNW new
  • +1 more