North Pacific storm

50°15.1′N 164°22.5′W

Waves left about 12 Oct 07:29Z, ± 4 h

Placed by 2 buoys, whose own placements lie within 196 nmi of it

Its swell was last measured at 46078 (Albatross Bank, AK) on 13 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