North Pacific storm

47°59.1′N 162°59.9′E

Waves left about 3 Oct 09:45Z, ± 3 h

Placed by 8 buoys, whose own placements lie within 397 nmi of it

Its swell was last measured at 52213 (North Point, Pohnpei) on 12 Oct 04:00Z; 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