North Pacific storm

37°07.0′N 153°11.2′E

Waves left about 22 Oct 03:05Z, ± 3 h

Placed by 10 buoys, whose own placements lie within 489 nmi of it

Its swell was last measured at 46069 (South Santa Rosa Island, CA) on 31 Oct 15:20Z; 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