North Pacific storm

45°31.2′N 155°01.8′E

Waves left about 7 Oct 04:23Z, ± 2 h

Placed by 12 buoys, whose own placements lie within 331 nmi of it

Its swell was last measured at 46022 (Eel River, CA) on 16 Oct 02:32Z; 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