North Atlantic storm

17°25.3′N 028°53.1′W

Waves left about 23 Oct 13:24Z, ± 2 h

Placed by 2 buoys, whose own placements lie within 82 nmi of it

Its swell was last measured at 41040 (North Equatorial One) on 28 Oct 18:20Z; 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