North Pacific storm

21°40.4′N 151°34.6′W

Waves left about 28 Oct 14:04Z, ± 6 h

Placed by 2 buoys, whose own placements lie within 257 nmi of it

Its swell was last measured at 46060 (West Orca Bay, AK) on 5 Nov 04:50Z; 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