North Pacific storm

46°11.7′N 174°49.9′E

Waves left about 17 Oct 23:00Z, ± 7 h

Placed by 2 buoys, whose own placements lie within 173 nmi of it

Its swell was last measured at 46236 (Monterey Canyon Outer, CA (156)) on 25 Oct 23:00Z; 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