Bluegraph
SIMarineUS

Storms placed by their swell

South Pacific storm

24°00.9′S 131°41.4′W

Waves left about 30 Sep 03:06Z, ± 7 h

Placed by 4 buoys, whose own placements lie within 396 nmi of it

Its swell was last measured at 46025 (Santa Monica Basin, CA) on 11 Oct 13:20Z; 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