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 162
Newest spectrum
31 min ago
Systems named
305
Swell · wind sea
196 · 109
Seas crossing
11 buoys
Storms, last month
173 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
Mid Superior 45001 · Great Lakes · 31 min ago
  • Wind sea2.8 ft5 sSSE
North Michigan 45002 · Great Lakes · 31 min ago
  • Wind sea2.2 ft4 sSSW new
Oswego, NY 45215 · Great Lakes · 3 h agoCalm: no wave system large enough to name
Rawley Point East, WI 45210 · Great Lakes · 51 min ago
  • Wind sea2.9 ft4 sS new
West Superior 45006 · Great Lakes · 31 min ago
  • Wind sea1.5 ft4 sSSW new
Canaveral East, FL 41010 · Eastern Seaboard South · 31 min ago
  • Swell1.7 ft9 sENE
  • Swell1.0 ft9 sSSW new
Canaveral, FL 41009 · Eastern Seaboard South · 31 min ago
  • Swell1.1 ft10 sNE ↓ fading
  • Swell0.7 ft4 sESE new
Cape Canaveral Nearshore, FL 41113 · Eastern Seaboard South · 51 min ago
  • Wind sea0.9 ft10 sE
Cape Hatteras East, NC (250) 41120 · Eastern Seaboard South · 51 min ago
  • Wind sea1.9 ft9 sSE new
  • Groundswell0.8 ft14 sESE ↓ fading
About 3350 mi to the NE (056°T)
Diamond Shoals, NC 41025 · Eastern Seaboard South · 31 min ago
  • Swell1.7 ft9 sENE
  • Swell1.0 ft7 sSSE new
  • Swell0.6 ft5 sNE new
Duck FRF 26 m, NC 44100 · Eastern Seaboard South · 51 min ago
  • Wind sea1.9 ft9 sE ↑ building
  • Groundswell0.6 ft14 sE new
Duck FRF, NC 44056 · Eastern Seaboard South · 51 min ago
  • Wind sea1.9 ft9 sE ↑ building
  • Groundswell0.8 ft16 sE ↑ building
About 2200 mi to the NE (053°T)
Edisto, SC 41004 · Eastern Seaboard South · 31 min ago
  • Swell1.2 ft9 sE ↑ building
  • Swell0.8 ft5 sS new
Fernandina Beach, FL Offshore 41112 · Eastern Seaboard South · 51 min ago
  • Groundswell1.0 ft14 sE ↑ building
  • Wind sea0.8 ft4 sSE new
Fort Pierce, FL (134) 41114 · Eastern Seaboard South · 51 min ago
  • Wind sea1.8 ft10 sESE new
Frying Pan Shoals, NC 41013 · Eastern Seaboard South · 31 min ago
  • Swell1.3 ft9 sE
  • Swell0.6 ft4 sS
Grays Reef, GA 41008 · Eastern Seaboard South · 31 min ago
  • Swell1.0 ft4 sSSE ↓ fading
  • Swell1.0 ft10 sE
  • Swell0.8 ft3 sNNE new
Hollywood Beach, FL (265) 41122 · Eastern Seaboard South · 51 min ago
  • Wind sea1.1 ft3 sSE ↑ building
Masonboro Inlet, ILM2, NC (150) 41110 · Eastern Seaboard South · 51 min ago
  • Wind sea1.4 ft9 sSE
NE BAHAMAS - 350 NM ENE of Nassau, Bahamas 41047 · Eastern Seaboard South · 31 min ago
  • Swell2.1 ft8 sNNE
  • Swell1.5 ft5 sSW
  • Swell1.2 ft8 sESE new