North Pacific storm

51°57.7′N 168°35.1′E

Waves left about 17 Oct 00:34Z, ± 3 h

Placed by 2 buoys, whose own placements lie within 81 nmi of it

Its swell was last measured at 46073 (Southeast Bering Sea, AK) on 20 Oct 06:20Z; 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