Bluegraph
SIMarineUS

Wave intelligence

The systems in the sea

A buoy's single wave height hides what the sea is made of: 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 taken apart into those systems, followed through time, and used to place the storms the swells came from and to flag seas that cross.

162 of 164 stations with directional spectra analysed from their latest spectrum and the four days before it.

The wave systems in each buoy's latest spectrum, largest first, and whether each is building or fading.

39 of 164 shown

StationSystems nowSeasStorms
Bodega Bay, CA 46013 · California · spectrum 32 min ago
  • Wind sea 2.9 m · 8 s · NW building
—About 1200 nmi to the WNW (299°T)
Cape Mendocino, CA (094) 46213 · California · spectrum 22 min ago
  • Groundswell 2.4 m · 15 s · NW building
  • Wind sea 1.8 m · 8 s · NNW building
—About 2300 nmi to the WSW (250°T)
Cape San Martin, CA 46028 · California · spectrum 32 min ago
  • Wind sea 2.9 m · 9 s · NW
——
Capistrano Beach Nearshore, CA 46285 · California · spectrum 22 min ago
  • Wind sea 0.7 m · 4 s · WSW new
  • Swell 0.6 m · 11 s · SSW fading
  • Groundswell 0.5 m · 16 s · SSW building
——
Del Mar Nearshore, CA 46266 · California · spectrum 22 min ago
  • Swell 1.0 m · 11 s · W building
  • Groundswell 0.4 m · 19 s · WSW
——
Diablo Canyon, CA 46215 · California · spectrum 22 min ago
  • Wind sea 1.5 m · 8 s · WNW
  • Groundswell 0.6 m · 16 s · SW
—About 2050 nmi to the SSW (208°T)
East Santa Barbara, CA 46053 · California · spectrum 32 min ago
  • Wind sea 1.5 m · 6 s · W new
——
Eel River, CA 46022 · California · spectrum 32 min ago
  • Groundswell 2.1 m · 13 s · WNW fading
  • Swell 1.7 m · 8 s · NNW building
—About 2200 nmi to the WNW (287°T)
Green Beach Offshore 46277 · California · spectrum 22 min ago
  • Wind sea 1.1 m · 5 s · W new
  • Groundswell 0.7 m · 13 s · SSW fading
—About 2250 nmi to the SSW (205°T)
Harvest, CA (071) 46218 · California · spectrum 22 min ago
  • Wind sea 2.1 m · 8 s · NW
  • Groundswell 0.8 m · 14 s · S
—About 1400 nmi to the SSW (196°T)
Leucadia Nearshore 46274 · California · spectrum 1 h ago
  • Wind sea 0.8 m · 8 s · W building
  • Swell 0.7 m · 11 s · SW
——
Long Beach Channel, CA 46256 · California · spectrum 22 min ago
  • Groundswell 0.8 m · 13 s · S building
  • Groundswell 0.6 m · 14 s · NNW
  • Wind sea 0.3 m · 6 s · WSW fading
——
Mission Bay West, CA 46258 · California · spectrum 22 min ago
  • Wind sea 1.6 m · 8 s · W building
  • Swell 0.9 m · 12 s · SSW
Crossing, 80° apart—
Monterey Canyon Outer, CA (156) 46236 · California · spectrum 22 min ago
  • Wind sea 1.7 m · 6 s · WNW new
——
Monterey, CA 46042 · California · spectrum 32 min ago
  • Wind sea 2.3 m · 9 s · NW
  • Groundswell 0.9 m · 16 s · WNW fading
——
Oceanside Offshore, CA 46224 · California · spectrum 22 min ago
  • Wind sea 0.9 m · 5 s · W new
  • Swell 0.7 m · 12 s · SSW
  • Groundswell 0.3 m · 17 s · SSW new
——
Point Arena, CA 46014 · California · spectrum 32 min ago
  • Wind sea 2.9 m · 8 s · NNW new
  • Groundswell 0.9 m · 14 s · WNW new
  • Groundswell 0.8 m · 15 s · E new
—About 2100 nmi to the WNW (301°T)
Point Loma South, CA 46232 · California · spectrum 1 h ago
  • Wind sea 1.7 m · 8 s · WSW building
——
Point Reyes, CA 46214 · California · spectrum 22 min ago
  • Wind sea 3.2 m · 9 s · NW
  • Groundswell 1.5 m · 15 s · W building
——
Point Sur, CA (157) 46239 · California · spectrum 1 h ago
  • Wind sea 1.9 m · 8 s · NW
  • Groundswell 0.8 m · 16 s · WNW building
  • Swell 0.7 m · 12 s · S building
——
Red Beach Nearshore 46275 · California · spectrum 1 h ago
  • Wind sea 0.7 m · 4 s · W new
  • Swell 0.7 m · 11 s · SSW
—About 900 nmi to the SW (228°T)
San Clemente Basin, CA 46086 · California No spectrum in the last six hours
San Francisco, CA 46026 · California · spectrum 32 min ago
  • Wind sea 1.9 m · 9 s · WNW
  • Groundswell 1.0 m · 16 s · W new
—About 450 nmi to the WNW (301°T)
San Nicolas Island, CA 46219 · California · spectrum 22 min ago
  • Wind sea 3.1 m · 8 s · NW building
  • Groundswell 1.1 m · 14 s · SSE building
——
San Pedro South, CA 46253 · California · spectrum 22 min ago
  • Wind sea 1.1 m · 8 s · W
  • Swell 0.8 m · 13 s · S
——
San Pedro, CA 46222 · California · spectrum 22 min ago
  • Wind sea 1.2 m · 7 s · W building
  • Swell 1.2 m · 13 s · SSE
Crossing, 125° apart—
Santa Cruz Basin, CA 46251 · California · spectrum 22 min ago
  • Wind sea 2.3 m · 6 s · WNW
——
Santa Lucia Escarpment, CA 46259 · California · spectrum 22 min ago
  • Wind sea 2.3 m · 8 s · NW
  • Swell 0.8 m · 13 s · S
  • Groundswell 0.7 m · 16 s · NW
—About 2000 nmi to the SSW (199°T)
Santa Maria, CA 46011 · California · spectrum 32 min ago
  • Wind sea 1.9 m · 8 s · NW
  • Groundswell 0.7 m · 16 s · SE new
  • Groundswell 0.5 m · 16 s · NNW fading
—About 1550 nmi to the NW (305°T)
Santa Monica Basin, CA 46025 · California · spectrum 32 min ago
  • Swell 1.6 m · 7 s · W
  • Swell 0.7 m · 13 s · S
——
Santa Monica Bay, CA 46221 · California · spectrum 22 min ago
  • Wind sea 1.8 m · 6 s · W building
  • Groundswell 0.9 m · 13 s · SSE
——
Scripps Nearshore, CA 46254 · California · spectrum 1 h ago
  • Wind sea 1.0 m · 8 s · W
——
South Santa Rosa Island, CA 46069 · California · spectrum 32 min ago
  • Wind sea 3.0 m · 8 s · NW building
  • Groundswell 1.1 m · 16 s · S building
——
St Georges, CA 46027 · California · spectrum 32 min ago
  • Wind sea 2.2 m · 6 s · NNW new
  • Swell 1.5 m · 13 s · WNW fading
Crossing, 40° apartAbout 1700 nmi to the WNW (299°T)
Tanner Bank, CA 46047 · California · spectrum 32 min ago
  • Wind sea 2.8 m · 8 s · NW
  • Swell 1.0 m · 12 s · SSE fading
  • Groundswell 0.7 m · 16 s · W new
——
Topanga Nearshore 46268 · California · spectrum 1 h ago
  • Wind sea 1.0 m · 6 s · WSW
  • Swell 0.5 m · 11 s · SSW
——
Torrey Pines Outer, CA 46225 · California · spectrum 22 min ago
  • Wind sea 1.2 m · 8 s · W building
  • Swell 0.8 m · 11 s · SSW fading
  • Groundswell 0.4 m · 15 s · WSW new
——
West California 46059 · California · spectrum 32 min ago
  • Groundswell 1.8 m · 13 s · NW
  • Swell 1.1 m · 7 s · NNE fading
  • Swell 1.0 m · 8 s · NW building
Crossing, 80° apartAbout 800 nmi to the SSE (152°T)
West Santa Barbara, CA 46054 · California · spectrum 32 min ago
  • Wind sea 2.4 m · 8 s · NW
——