North Pacific storm

23°19.9′N 173°34.2′E

Waves left about 5 Oct 10:22Z, ± 6 h

Placed by 3 buoys, whose own placements lie within 272 nmi of it

Its swell was last measured at 46243 (Clatsop Spit, OR) on 13 Oct 14:00Z; 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