North Pacific storm

48°25.7′N 130°34.1′W

Waves left about 22 Oct 07:45Z, ± 2 h

Placed by 4 buoys, whose own placements lie within 122 nmi of it

Its swell was last measured at 46061 (Seal Rocks, AK) on 25 Oct 18:20Z; 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