North Pacific storm

39°55.3′N 166°37.6′E

Waves left about 23 Oct 03:43Z, ± 4 h

Placed by 3 buoys, whose own placements lie within 241 nmi of it

Its swell was last measured at 51212 (Barbers Point, Kalaeloa, HI (238)) on 29 Oct 11:36Z; 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