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 163
Newest spectrum
26 min ago
Systems named
304
Swell · wind sea
197 · 107
Seas crossing
8 buoys
Storms, last month
181 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
NE BAHAMAS - 350 NM ENE of Nassau, Bahamas 41047 · Eastern Seaboard South · 36 min ago
  • Swell0.6 m7 sN
  • Swell0.4 m8 sESE
  • Swell0.4 m5 sSW
  • +2 more
Nags Head, NC 44086 · Eastern Seaboard South · 26 min ago
  • Wind sea0.7 m9 sESE
  • Groundswell0.3 m14 sE ↑ building
Onslow Bay Outer, NC (217) 41159 · Eastern Seaboard South · 26 min ago
  • Groundswell0.4 m14 sESE ↑ building
  • Wind sea0.2 m5 sSSW new
Oregon Inlet, NC 44095 · Eastern Seaboard South · 1 h ago
  • Swell0.4 m9 sENE
  • Swell0.4 m3 sNE ↑ building
  • Groundswell0.3 m15 sENE ↑ building
  • +2 more
South Bermuda 41049 · Eastern Seaboard South · 1 h ago
  • Groundswell1.0 m14 sNNE
  • Swell0.8 m7 sWNW new
  • Swell0.7 m8 sSE
About 3100 nmi to the NE (034°T)
South Hatteras 41002 · Eastern Seaboard South · 36 min ago
  • Swell0.5 m9 sENE ↑ building
  • Swell0.3 m5 sSSW new
  • Wind sea0.2 m3 sS new
  • +2 more
St. Augustine, FL (194) 41117 · Eastern Seaboard South · 1 h ago
  • Wind sea0.4 m10 sE
West Bermuda 41048 · Eastern Seaboard South · 36 min ago
  • Groundswell0.5 m14 sE ↑ building
  • Swell0.5 m8 sNE
  • Swell0.5 m6 sS
  • +1 more
Aransas Pass Channel Entrance, TX 42092 · Gulf of Mexico · 1 h ago
  • Wind sea1.2 m5 sSE ↑ building
Bay of Campeche, MX 42055 · Gulf of Mexico · 36 min ago
  • Wind sea0.8 m5 sESE
Egmont Channel Entrance, FL 42098 · Gulf of Mexico · 26 min ago
  • Wind sea0.8 m5 sSSW ↑ building
Galveston, TX 42035 · Gulf of Mexico · 1 h ago
  • Wind sea1.0 m5 sSSE ↑ building
Mid Gulf 42001 · Gulf of Mexico · 36 min ago
  • Swell0.8 m6 sSSE ↑ building
  • Swell0.3 m4 sSSE new
Offshore St. Petersburg, FL 42099 · Gulf of Mexico · 1 h ago
  • Wind sea0.9 m5 sSSE
Orange Beach, AL 42012 · Gulf of Mexico · 1 h ago
  • Wind sea0.2 m2 sE new
Pensacola, FL 42039 · Gulf of Mexico · 36 min ago
  • Swell0.5 m5 sSSE ↑ building
Satan Shoal, FL 42095 · Gulf of Mexico · 1 h ago
  • Wind sea0.6 m5 sE new
Southwest Pass Entrance W, LA 42084 · Gulf of Mexico · 26 min ago
  • Wind sea0.4 m2 sESE ↓ fading
West Gulf 42002 · Gulf of Mexico · 36 min ago
  • Wind sea1.0 m5 sSE
  • Swell0.4 m5 sENE new
About 800 nmi to the E (093°T)
West Tampa, FL 42036 · Gulf of Mexico · 1 h ago
  • Wind sea0.6 m3 sSSE new
  • Swell0.2 m2 sNNW new