North Pacific storm

22°38.7′N 133°41.1′E

Waves left about 4 Oct 20:17Z, ± 5 h

Placed by 2 buoys, whose own placements lie within 111 nmi of it

Its swell was last measured at 46072 (Central Aleutians, AK) on 13 Oct 21:50Z; 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