North Pacific storm

37°11.3′N 157°33.5′E

Waves left about 28 Oct 00:19Z, ± 3 h

Placed by 6 buoys, whose own placements lie within 316 nmi of it

Its swell was last measured at 46218 (Harvest, CA (071)) on 5 Nov 16:00Z; 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