North Pacific storm

23°11.2′N 148°42.5′E

Waves left about 11 Oct 20:39Z, ± 6 h

Placed by 2 buoys, whose own placements lie within 105 nmi of it

Its swell was last measured at 46071 (W Aleutians (Amchitka), AK) on 16 Oct 18:50Z; 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