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 163
Newest spectrum
34 min ago
Systems named
320
Swell · wind sea
219 · 101
Seas crossing
5 buoys
Storms, last month
194 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 · 34 min ago
  • Swell1.6 ft9 sE
  • Swell1.1 ft12 sSE ↑ building
  • Swell0.7 ft3 sS new
  • +1 more
Canaveral, FL 41009 · Eastern Seaboard South · 34 min ago
  • Swell1.2 ft9 sENE
  • Swell0.6 ft2 sSE new
About 3600 mi to the NE (053°T)
Cape Canaveral Nearshore, FL 41113 · Eastern Seaboard South · 54 min ago
  • Wind sea0.8 ft9 sE ↓ fading
  • Groundswell0.6 ft14 sE new
Cape Hatteras East, NC (250) 41120 · Eastern Seaboard South · 54 min ago
  • Groundswell1.7 ft13 sE ↑ building
  • Wind sea1.5 ft10 sESE
About 1150 mi to the NE (054°T)
Diamond Shoals, NC 41025 · Eastern Seaboard South · 34 min ago
  • Swell1.6 ft9 sE
  • Swell1.0 ft13 sESE ↓ fading
  • Swell0.6 ft4 sE new
Duck FRF 26 m, NC 44100 · Eastern Seaboard South · 54 min ago
  • Wind sea2.0 ft9 sE ↑ building
Duck FRF, NC 44056 · Eastern Seaboard South · 54 min ago
  • Wind sea1.8 ft9 sE
  • Groundswell1.0 ft13 sE ↑ building
About 1700 mi to the NE (054°T)
Edisto, SC 41004 · Eastern Seaboard South · 34 min ago
  • Wind sea1.3 ft3 sNE new
  • Swell1.0 ft9 sESE
  • Groundswell0.5 ft14 sE
Fernandina Beach, FL Offshore 41112 · Eastern Seaboard South · 54 min ago
  • Wind sea1.5 ft10 sENE ↑ building
  • Groundswell0.7 ft14 sE ↑ building
Fort Pierce, FL (134) 41114 · Eastern Seaboard South · 54 min ago
  • Wind sea1.4 ft9 sE ↑ building
  • Groundswell0.6 ft13 sENE new
Frying Pan Shoals, NC 41013 · Eastern Seaboard South · 34 min ago
  • Wind sea1.2 ft3 sNNE
  • Swell1.2 ft9 sESE new
  • Groundswell0.7 ft15 sENE ↑ building
  • +2 more
About 2600 mi to the E (100°T)
Grays Reef, GA 41008 · Eastern Seaboard South · 1 h ago
  • Swell0.8 ft9 sE ↓ fading
  • Groundswell0.8 ft14 sESE
  • Swell0.6 ft4 sESE ↓ fading
  • +1 more
Hollywood Beach, FL (265) 41122 · Eastern Seaboard South · 54 min ago
  • Wind sea2.3 ft4 sESE new
Masonboro Inlet, ILM2, NC (150) 41110 · Eastern Seaboard South · 54 min ago
  • Wind sea1.2 ft8 sE
  • Groundswell0.5 ft14 sESE ↓ fading
About 5450 mi to the ESE (103°T)
NE BAHAMAS - 350 NM ENE of Nassau, Bahamas 41047 · Eastern Seaboard South · 34 min ago
  • Swell2.5 ft11 sE ↑ building
  • Swell0.8 ft4 sSW ↓ fading
Nags Head, NC 44086 · Eastern Seaboard South · 54 min ago
  • Wind sea1.9 ft8 sE
  • Groundswell1.1 ft13 sE ↑ building
Onslow Bay Outer, NC (217) 41159 · Eastern Seaboard South · 54 min ago
  • Wind sea1.6 ft10 sE ↑ building
Oregon Inlet, NC 44095 · Eastern Seaboard South · 54 min ago
  • Swell1.7 ft9 sE
  • Groundswell1.0 ft13 sE
  • Swell0.8 ft4 sE new
  • +1 more
South Bermuda 41049 · Eastern Seaboard South · 34 min ago
  • Groundswell2.8 ft13 sNNE ↓ fading
  • Swell2.1 ft11 sESE new
  • Swell1.8 ft8 sWNW
About 1400 mi to the NE (036°T)
South Hatteras 41002 · Eastern Seaboard South · 34 min ago
  • Swell1.7 ft12 sENE ↑ building
  • Swell1.4 ft5 sSSE ↓ fading
  • Swell1.0 ft4 sSE new
  • +2 more
About 550 mi to the SSE (148°T)