North Pacific storm

27°05.4′N 159°14.5′E

Waves left about 4 Oct 18:46Z, ± 7 h

Placed by 5 buoys, whose own placements lie within 419 nmi of it

Its swell was last measured at 46026 (San Francisco, CA) on 15 Oct 06:20Z; 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