North Pacific storm

51°55.5′N 164°52.4′W

Waves left about 7 Nov 21:34Z, ± 2 h

Placed by 2 buoys, whose own placements lie within 168 nmi of it

Its swell was last measured at 46066 (South Kodiak, AK) on 9 Nov 17:20Z; 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