North Atlantic storm

27°42.8′N 045°59.4′W

Waves left about 14 Oct 18:53Z, ± 3 h

Placed by 2 buoys, whose own placements lie within 116 nmi of it

Its swell was last measured at 42060 (Caribbean Valley) on 18 Oct 05:50Z; 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