Bluegraph
SIMarineUS

Storms placed by their swell

South Pacific storm

11°57.4′S 163°32.1′E

Waves left about 19 Oct 23:51Z, ± 11 h

Placed by 4 buoys, whose own placements lie within 774 nmi of it

Its swell was last measured at 46222 (San Pedro, CA) on 30 Oct 13:00Z; 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