North Pacific storm

48°16.1′N 148°38.2′W

Waves left about 9 Oct 06:57Z, ± 2 h

Placed by 3 buoys, whose own placements lie within 198 nmi of it

Its swell was last measured at 46026 (San Francisco, CA) on 15 Oct 02:20Z; 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