North Pacific storm

50°08.5′N 177°43.3′E

Waves left about 4 Oct 15:43Z, ± 2 h

Placed by 11 buoys, whose own placements lie within 415 nmi of it

Its swell was last measured at 46054 (West Santa Barbara, CA) on 15 Oct 02:50Z; 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