North Pacific storm

38°48.7′N 129°22.6′W

Waves left about 5 Oct 02:10Z, ± 4 h

Placed by 2 buoys, whose own placements lie within 284 nmi of it

Its swell was last measured at 46054 (West Santa Barbara, CA) on 8 Oct 04:19Z; 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