North Atlantic storm

59°07.6′N 022°04.4′W

Waves left about 12 Oct 00:49Z, ± 5 h

Placed by 4 buoys, whose own placements lie within 507 nmi of it

Its swell was last measured at 41043 (NE Puerto Rico) on 22 Oct 04:50Z; 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