Southern Ocean storm

51°16.5′S 172°56.5′W

Waves left about 1 Oct 14:51Z, ± 4 h

Placed by 7 buoys, whose own placements lie within 590 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