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
39 min ago
Systems named
313
Swell · wind sea
203 · 110
Seas crossing
4 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 13 ft); 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 · 39 min ago
  • Swell2.0 ft9 sENE ↑ building
  • Swell1.4 ft13 sESE
  • Swell1.3 ft7 sNNE
  • +2 more
Nags Head, NC 44086 · Eastern Seaboard South · 59 min ago
  • Wind sea2.0 ft9 sE
  • Groundswell0.9 ft13 sENE ↑ building
Onslow Bay Outer, NC (217) 41159 · Eastern Seaboard South · 59 min ago
  • Wind sea1.4 ft10 sESE
  • Groundswell0.6 ft14 sESE
Oregon Inlet, NC 44095 · Eastern Seaboard South · 59 min ago
  • Swell1.8 ft9 sE ↑ building
  • Swell1.0 ft3 sNE
South Bermuda 41049 · Eastern Seaboard South · 39 min ago
  • Groundswell4.1 ft14 sENE ↑ building
  • Swell2.4 ft8 sNW ↑ building
About 3300 mi to the NE (044°T)
South Hatteras 41002 · Eastern Seaboard South · 39 min ago
  • Swell1.7 ft9 sESE ↑ building
  • Groundswell1.2 ft13 sE new
  • Swell1.2 ft4 sSSW new
St. Augustine, FL (194) 41117 · Eastern Seaboard South · 59 min ago
  • Wind sea1.3 ft10 sESE
West Bermuda 41048 · Eastern Seaboard South · 39 min ago
  • Groundswell1.7 ft14 sNE ↑ building
  • Swell1.3 ft6 sS ↓ fading
  • Swell1.2 ft9 sNNE ↓ fading
  • +2 more
About 1450 mi to the ENE (070°T)
Aransas Pass Channel Entrance, TX 42092 · Gulf of Mexico · 59 min ago
  • Wind sea5.4 ft5 sSE ↑ building
Bay of Campeche, MX 42055 · Gulf of Mexico · 39 min ago
  • Wind sea2.8 ft5 sESE ↑ building
Egmont Channel Entrance, FL 42098 · Gulf of Mexico · 59 min ago
  • Wind sea2.6 ft5 sSSW new
Galveston, TX 42035 · Gulf of Mexico · 39 min ago
  • Wind sea4.1 ft5 sSSE ↑ building
Mid Gulf 42001 · Gulf of Mexico · 39 min ago
  • Wind sea2.2 ft6 sSE
  • Swell0.9 ft5 sSSW new
  • Swell0.8 ft6 sW
Offshore St. Petersburg, FL 42099 · Gulf of Mexico · 59 min ago
  • Wind sea2.9 ft5 sSSE
Orange Beach, AL 42012 · Gulf of Mexico · 1 h ago
  • Wind sea0.8 ft2 sE ↓ fading
Pensacola, FL 42039 · Gulf of Mexico · 39 min ago
  • Wind sea2.0 ft6 sSSE ↑ building
Satan Shoal, FL 42095 · Gulf of Mexico · 59 min ago
  • Wind sea2.9 ft6 sWSW new
Southwest Pass Entrance W, LA 42084 · Gulf of Mexico · 59 min ago
  • Wind sea1.4 ft3 sSE
West Gulf 42002 · Gulf of Mexico · 39 min ago
  • Wind sea2.7 ft5 sE
  • Swell2.4 ft5 sSSE new
West Tampa, FL 42036 · Gulf of Mexico · 39 min ago
  • Wind sea2.1 ft5 sS ↑ building