North Pacific storm

36°45.7′N 179°45.7′E

Waves left about 11 Oct 01:50Z, ± 5 h

Placed by 3 buoys, whose own placements lie within 321 nmi of it

Its swell was last measured at 46028 (Cape San Martin, CA) on 18 Oct 10:50Z; 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