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
162 of 164
Newest spectrum
42 min ago
Systems named
301
Swell · wind sea
200 · 101
Seas crossing
5 buoys
Storms, last month
209 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
Grand Island North, MI 45211 · Great Lakes · 1 h ago
  • Wind sea0.6 m4 sSSW new
McGulpin Point North, MI 45194 · Great Lakes · 1 h ago
  • Wind sea0.3 m4 sW new
Mid Superior 45001 · Great Lakes · 42 min ago
  • Wind sea0.3 m3 sSSW new
North Michigan 45002 · Great Lakes · 42 min ago
  • Swell0.9 m6 sSSW
  • Wind sea0.3 m3 sSW new
Oswego, NY 45215 · Great Lakes · 3 h agoCalm: no wave system large enough to name
Rawley Point East, WI 45210 · Great Lakes · 1 h ago
  • Wind sea0.9 m6 sS ↓ fading
West Superior 45006 · Great Lakes · 42 min ago
  • Swell0.2 m2 sENE new
Canaveral East, FL 41010 · Eastern Seaboard South · 42 min ago
  • Swell0.7 m12 sE ↑ building
  • Wind sea0.4 m5 sENE ↑ building
Canaveral, FL 41009 · Eastern Seaboard South · 42 min ago
  • Wind sea0.6 m4 sE ↑ building
  • Groundswell0.3 m14 sENE new
  • Swell0.3 m9 sENE
About 2650 nmi to the NE (055°T)
Cape Canaveral Nearshore, FL 41113 · Eastern Seaboard South · 1 h ago
  • Wind sea0.4 m4 sESE ↓ fading
  • Groundswell0.3 m15 sE ↑ building
Cape Hatteras East, NC (250) 41120 · Eastern Seaboard South · 1 h ago
  • Swell0.7 m11 sE ↑ building
  • Wind sea0.2 m4 sENE new
Diamond Shoals, NC 41025 · Eastern Seaboard South · 1 h ago
  • Swell0.6 m12 sESE ↑ building
  • Swell0.4 m10 sNNE new
Duck FRF 26 m, NC 44100 · Eastern Seaboard South · 1 h ago
  • Swell0.5 m10 sENE
  • Groundswell0.3 m13 sESE ↑ building
  • Wind sea0.2 m7 sSE new
Duck FRF, NC 44056 · Eastern Seaboard South · 1 h ago
  • Wind sea0.5 m9 sE ↓ fading
  • Swell0.4 m12 sE new
Edisto, SC 41004 · Eastern Seaboard South · 42 min ago
  • Groundswell0.3 m13 sESE ↑ building
  • Swell0.3 m6 sE new
  • Swell0.3 m5 sSSE new
  • +1 more
Fernandina Beach, FL Offshore 41112 · Eastern Seaboard South · 1 h ago
  • Wind sea0.6 m4 sE new
  • Groundswell0.3 m14 sE
About 2600 nmi to the E (086°T)
Fort Pierce, FL (134) 41114 · Eastern Seaboard South · 1 h ago
  • Wind sea0.6 m3 sENE new
  • Groundswell0.2 m13 sENE ↓ fading
Frying Pan Shoals, NC 41013 · Eastern Seaboard South · 42 min ago
  • Swell0.6 m5 sESE new
  • Swell0.3 m13 sESE ↓ fading
  • Swell0.3 m9 sESE new
Grays Reef, GA 41008 · Eastern Seaboard South · 42 min ago
  • Wind sea0.6 m4 sE
  • Groundswell0.3 m13 sE ↑ building
Hollywood Beach, FL (265) 41122 · Eastern Seaboard South · 1 h ago
  • Wind sea0.8 m4 sESE ↑ building
About 3200 nmi to the ENE (064°T)