North Pacific storm

41°18.1′N 173°56.4′E

Waves left about 19 Oct 17:40Z, ± 7 h

Placed by 2 buoys, whose own placements lie within 217 nmi of it

Its swell was last measured at 51212 (Barbers Point, Kalaeloa, HI (238)) on 24 Oct 12:00Z; 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