Southern Ocean storm

54°55.0′S 172°12.0′W

Waves left about 1 Oct 23:31Z, ± 4 h

Placed by 7 buoys, whose own placements lie within 559 nmi of it

Its swell was last measured at 46248 (Astoria Canyon, OR (179)) on 16 Oct 16:00Z; 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