North Pacific storm

29°44.5′N 161°17.5′E

Waves left about 6 Oct 23:19Z, ± 2 h

Placed by 13 buoys, whose own placements lie within 359 nmi of it

Its swell was last measured at 46047 (Tanner Bank, CA) on 17 Oct 23:50Z; 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