North Atlantic storm

31°29.5′N 051°00.3′W

Waves left about 14 Oct 22:03Z, ± 3 h

Placed by 2 buoys, whose own placements lie within 51 nmi of it

Its swell was last measured at 42060 (Caribbean Valley) on 18 Oct 06:20Z; 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