South Pacific storm

38°19.5′S 173°54.4′W

Waves left about 30 Sep 18:09Z, ± 8 h

Placed by 3 buoys, whose own placements lie within 676 nmi of it

Its swell was last measured at 46274 (Leucadia Nearshore) on 11 Oct 03:00Z; 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