North Pacific storm

24°46.1′N 138°32.5′W

Waves left about 11 Oct 15:50Z, ± 4 h

Placed by 2 buoys, whose own placements lie within 228 nmi of it

Its swell was last measured at 46060 (West Orca Bay, AK) on 17 Oct 09:50Z; 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