Bluegraph
SIMarineUS

Storms placed by their swell

South Pacific storm

43°19.4′S 164°19.1′W

Waves left about 5 Oct 01:21Z, ± 5 h

Placed by 7 buoys, whose own placements lie within 509 nmi of it

Its swell was last measured at 51004 (SE Hawaii - 200 NM SE of Hilo) on 15 Oct 04:20Z; 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