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 163
Newest spectrum
53 min ago
Systems named
321
Swell · wind sea
214 · 107
Seas crossing
6 buoys
Storms, last month
189 placed →
Window
The last 4 days
Method
Reference

Swells whose arrival places the storm that raised them, found over the last four days: how far off it was, in which direction, and when the waves left.

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

StationWhere the swell came from
Port Orford, OR 46015 · Pacific Northwest · 53 min agoAbout 850 mi to the NW (317°T)Waves left about 26 Sep 08Z · Swell peaking at 3.8 ft · 2 storms in all
Stonewall Bank, OR 46050 · Pacific Northwest · 53 min agoAbout 900 mi to the W (268°T)Waves left about 26 Sep 03Z · Swell peaking at 2.8 ft · 2 storms in all
Cape Elizabeth, WA 46041 · Pacific Northwest · 53 min agoAbout 950 mi to the SW (220°T)Waves left about 25 Sep 15Z · Swell peaking at 2.7 ft · 2 storms in all
Umpqua, OR Offshore 46229 · Pacific Northwest · 1 h agoAbout 2050 mi to the WNW (294°T)Waves left about 25 Sep 07Z · Groundswell peaking at 8.4 ft
Clatsop Spit, OR 46243 · Pacific Northwest · 1 h agoAbout 2400 mi to the W (261°T)Waves left about 24 Sep 17Z · Groundswell peaking at 4.6 ft
Tillamook, OR 46089 · Pacific Northwest · 53 min agoAbout 1350 mi to the WSW (257°T)Waves left about 24 Sep 13Z · Swell peaking at 2.6 ft
Tillamook Bay South Jetty, OR 46278 · Pacific Northwest · 1 h agoAbout 2750 mi to the WNW (288°T)Waves left about 24 Sep 05Z · Groundswell peaking at 9.6 ft
West Oregon 46002 · Pacific Northwest · 53 min agoAbout 2750 mi to the WNW (296°T)Waves left about 23 Sep 20Z · Swell peaking at 10.6 ft