North Atlantic storm

12°50.6′N 058°24.4′W

Waves left about 3 Oct 04:05Z, ± 5 h

Placed by 2 buoys, whose own placements lie within 119 nmi of it

Its swell was last measured at 42058 (Central Caribbean) on 7 Oct 08:20Z; 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