North Pacific storm

39°47.4′N 163°18.5′E

Waves left about 16 Oct 19:48Z, ± 6 h

Placed by 5 buoys, whose own placements lie within 397 nmi of it

Its swell was last measured at 51212 (Barbers Point, Kalaeloa, HI (238)) on 24 Oct 22:00Z; 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