North Atlantic storm

48°28.4′N 043°28.5′W

Waves left about 13 Oct 12:56Z, ± 4 h

Placed by 5 buoys, whose own placements lie within 271 nmi of it

Its swell was last measured at 42060 (Caribbean Valley) on 22 Oct 16:32Z; 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