Bluegraph
SIMarineUS

Storms placed by their swell

North Pacific storm

23°58.5′N 168°20.9′E

Waves left about 3 Nov 22:42Z, ± 6 h

Placed by 2 buoys, whose own placements lie within 504 nmi of it

Its swell was last measured at 46011 (Santa Maria, CA) on 10 Nov 17:50Z; the replay ends there.

Each buoy places the storm from how its swell's period shortened as it arrived: the longest waves travel fastest. Fronts are drawn at deep-water group speeds along great circles, and stop at land. How it is worked out