North Pacific storm

48°58.5′N 152°09.5′E

Waves left about 22 Oct 06:47Z, ± 3 h

Placed by 4 buoys, whose own placements lie within 232 nmi of it

Its swell was last measured at 51000 (Northern Hawaii One) on 29 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