North Atlantic storm

29°23.5′N 069°00.7′W

Waves left about 1 Oct 17:59Z, ± 3 h

Placed by 3 buoys, whose own placements lie within 272 nmi of it

Its swell was last measured at 42002 (West Gulf) on 7 Oct 00:50Z; 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