North Pacific storm

36°10.1′N 137°03.0′W

Waves left about 19 Oct 06:52Z, ± 2 h

Placed by 5 buoys, whose own placements lie within 218 nmi of it

Its swell was last measured at 46054 (West Santa Barbara, CA) on 22 Oct 22:50Z; 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