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
37 min ago
Systems named
307
Swell · wind sea
212 · 95
Seas crossing
8 buoys
Storms, last month
215 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
Canaveral East, FL 41010 · Eastern Seaboard South · 47 min ago
  • Swell1.9 ft10 sENE
  • Wind sea1.2 ft4 sESE
  • Swell0.9 ft5 sNE new
  • +1 more
Canaveral, FL 41009 · Eastern Seaboard South · 1 h ago
  • Swell2.1 ft5 sE
  • Wind sea2.0 ft4 sSSE new
  • Swell0.9 ft9 sENE
  • +1 more
About 2550 mi to the NE (054°T)
Cape Canaveral Nearshore, FL 41113 · Eastern Seaboard South · 37 min ago
  • Wind sea2.5 ft4 sSE new
  • Groundswell0.8 ft15 sE new
About 1950 mi to the ENE (076°T)
Cape Hatteras East, NC (250) 41120 · Eastern Seaboard South · 37 min ago
  • Swell1.5 ft12 sESE ↑ building
  • Wind sea1.5 ft10 sENE ↓ fading
Diamond Shoals, NC 41025 · Eastern Seaboard South · 1 h ago
  • Swell1.9 ft13 sE
  • Swell0.8 ft7 sSE new
About 650 mi to the E (098°T)
Duck FRF 26 m, NC 44100 · Eastern Seaboard South · 1 h ago
  • Wind sea1.5 ft10 sE ↓ fading
  • Swell1.0 ft10 sNNE new
  • Swell1.0 ft13 sESE new
About 1000 mi to the NE (050°T)
Duck FRF, NC 44056 · Eastern Seaboard South · 1 h ago
  • Swell1.6 ft12 sE ↑ building
  • Swell0.8 ft10 sNE ↓ fading
  • Wind sea0.6 ft6 sSE new
Edisto, SC 41004 · Eastern Seaboard South · 1 h ago
  • Swell1.3 ft6 sENE new
  • Swell1.0 ft6 sSE ↓ fading
  • Swell0.8 ft11 sSSE new
  • +2 more
Fernandina Beach, FL Offshore 41112 · Eastern Seaboard South · 37 min ago
  • Wind sea1.8 ft4 sE ↑ building
  • Swell1.3 ft12 sE ↑ building
About 2900 mi to the E (085°T)
Fort Pierce, FL (134) 41114 · Eastern Seaboard South · 37 min ago
  • Wind sea2.6 ft5 sENE new
  • Groundswell0.9 ft15 sENE
Frying Pan Shoals, NC 41013 · Eastern Seaboard South · 47 min ago
  • Swell1.6 ft5 sESE ↓ fading
  • Swell1.2 ft8 sE ↑ building
  • Swell0.8 ft4 sSSE new
Grays Reef, GA 41008 · Eastern Seaboard South · 1 h ago
  • Swell1.2 ft12 sESE ↑ building
  • Swell1.1 ft5 sENE new
  • Swell1.0 ft4 sSE new
Hollywood Beach, FL (265) 41122 · Eastern Seaboard South · 1 h ago
  • Wind sea3.3 ft4 sESE
About 3300 mi to the ENE (063°T)
Masonboro Inlet, ILM2, NC (150) 41110 · Eastern Seaboard South · 1 h ago
  • Wind sea1.6 ft4 sSE
  • Swell1.0 ft12 sESE ↑ building
About 4650 mi to the ESE (114°T)
NE BAHAMAS - 350 NM ENE of Nassau, Bahamas 41047 · Eastern Seaboard South · 47 min ago
  • Swell1.7 ft4 sSE ↑ building
  • Swell1.4 ft10 sNNE new
  • Swell1.2 ft12 sSE new
  • +1 more
Nags Head, NC 44086 · Eastern Seaboard South · 1 h ago
  • Wind sea1.5 ft10 sESE new
  • Swell1.4 ft10 sNE ↓ fading
  • Swell0.8 ft12 sENE
Onslow Bay Outer, NC (217) 41159 · Eastern Seaboard South · 37 min ago
  • Wind sea1.7 ft5 sSE new
  • Swell1.3 ft12 sE
About 3750 mi to the ESE (108°T)
Oregon Inlet, NC 44095 · Eastern Seaboard South · 37 min ago
  • Swell2.0 ft9 sE
  • Swell1.0 ft6 sSE new
South Bermuda 41049 · Eastern Seaboard South · 47 min ago
  • Swell3.0 ft8 sN ↓ fading
  • Swell1.8 ft12 sESE ↑ building
  • Swell1.6 ft7 sSE ↑ building
  • +1 more
About 1900 mi to the NNE (033°T)
South Hatteras 41002 · Eastern Seaboard South · 1 h ago
  • Swell2.0 ft12 sENE ↑ building
  • Swell1.6 ft5 sESE ↑ building
About 650 mi to the SSE (152°T)