North Atlantic storm

27°08.6′N 028°48.8′W

Waves left about 11 Oct 13:10Z, ± 11 h

Placed by 2 buoys, whose own placements lie within 458 nmi of it

Its swell was last measured at 41008 (Grays Reef, GA) on 17 Oct 10:50Z; 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