North Atlantic storm

12°31.9′N 056°49.3′W

Waves left about 7 Oct 03:15Z, ± 5 h

Placed by 4 buoys, whose own placements lie within 214 nmi of it

Its swell was last measured at 42057 (Western Caribbean) on 15 Oct 00:50Z; 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