North Atlantic storm

31°38.8′N 062°43.7′W

Waves left about 17 Oct 04:19Z, ± 2 h

Placed by 3 buoys, whose own placements lie within 189 nmi of it

Its swell was last measured at 42060 (Caribbean Valley) on 20 Oct 04:20Z; 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