North Pacific storm

51°55.7′N 165°13.4′W

Waves left about 5 Nov 15:20Z, ± 3 h

Placed by 2 buoys, whose own placements lie within 28 nmi of it

Its swell was last measured at 46085 (Central Gulf of Alaska) on 8 Nov 11:50Z; 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