Bluegraph
SIMarineUS

Storms placed by their swell

South Pacific storm

40°40.2′S 155°30.4′W

Waves left about 2 Oct 08:20Z, ± 8 h

Placed by 6 buoys, whose own placements lie within 675 nmi of it

Its swell was last measured at 46086 (San Clemente Basin, CA) on 12 Oct 13:02Z; 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