North Atlantic storm

16°45.5′N 037°04.9′W

Waves left about 20 Oct 09:45Z, ± 6 h

Placed by 2 buoys, whose own placements lie within 298 nmi of it

Its swell was last measured at 44008 (Nantucket Offshore, MA) on 28 Oct 21:50Z; 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