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
32 min ago
Systems named
306
Swell · wind sea
208 · 98
Seas crossing
10 buoys
Storms, last month
170 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 4 m); its width is the directional spread. Swell Wind sea Storm placed

StationSystems nowSeas crossingStorm placed
Mid Superior 45001 · Great Lakes · 42 min ago
  • Wind sea0.8 m4 sSSE new
North Michigan 45002 · Great Lakes · 42 min ago
  • Wind sea0.3 m3 sS new
Oswego, NY 45215 · Great Lakes · 32 min agoCalm: no wave system large enough to name
Rawley Point East, WI 45210 · Great Lakes · 1 h ago
  • Wind sea0.2 m2 sE new
West Superior 45006 · Great Lakes · 42 min ago
  • Wind sea0.4 m3 sS ↑ building
Canaveral East, FL 41010 · Eastern Seaboard South · 42 min ago
  • Swell0.6 m8 sENE ↑ building
  • Swell0.2 m10 sSE ↓ fading
  • Groundswell0.2 m14 sSSE new
Canaveral, FL 41009 · Eastern Seaboard South · 1 h ago
  • Swell0.5 m10 sENE
Cape Canaveral Nearshore, FL 41113 · Eastern Seaboard South · 32 min ago
  • Wind sea0.3 m10 sE
Cape Hatteras East, NC (250) 41120 · Eastern Seaboard South · 1 h ago
  • Wind sea0.5 m10 sE
  • Groundswell0.2 m15 sESE ↓ fading
About 3200 nmi to the ENE (057°T)
Diamond Shoals, NC 41025 · Eastern Seaboard South · 1 h ago
  • Swell0.7 m9 sE ↑ building
Duck FRF 26 m, NC 44100 · Eastern Seaboard South · 32 min ago
  • Wind sea0.6 m9 sE
  • Groundswell0.2 m15 sE new
About 2600 nmi to the ENE (060°T)
Duck FRF, NC 44056 · Eastern Seaboard South · 1 h ago
  • Wind sea0.6 m6 sE
  • Groundswell0.2 m15 sE
About 2050 nmi to the ENE (057°T)
Edisto, SC 41004 · Eastern Seaboard South · 1 h ago
  • Swell0.3 m9 sESE
  • Swell0.2 m4 sSSW
Fernandina Beach, FL Offshore 41112 · Eastern Seaboard South · 32 min ago
  • Wind sea0.4 m10 sSE ↓ fading
Fort Pierce, FL (134) 41114 · Eastern Seaboard South · 32 min ago
  • Swell0.4 m11 sENE
Frying Pan Shoals, NC 41013 · Eastern Seaboard South · 42 min ago
  • Swell0.4 m9 sESE
  • Swell0.3 m4 sS
Grays Reef, GA 41008 · Eastern Seaboard South · 1 h ago
  • Swell0.4 m5 sSSE ↓ fading
  • Swell0.2 m9 sSE ↓ fading
  • Swell0.2 m11 sNE new
Hollywood Beach, FL (265) 41122 · Eastern Seaboard South · 32 min ago
  • Wind sea0.3 m3 sSE new
Masonboro Inlet, ILM2, NC (150) 41110 · Eastern Seaboard South · 32 min ago
  • Swell0.3 m10 sESE new
  • Wind sea0.2 m5 sSSE new
NE BAHAMAS - 350 NM ENE of Nassau, Bahamas 41047 · Eastern Seaboard South · 42 min ago
  • Swell0.8 m8 sNNE
  • Swell0.5 m6 sS ↓ fading
  • Swell0.4 m13 sESE ↑ building
  • +1 more