North Atlantic storm

31°08.5′N 041°15.4′W

Waves left about 14 Oct 12:26Z, ± 4 h

Placed by 2 buoys, whose own placements lie within 208 nmi of it

Its swell was last measured at 41049 (South Bermuda) on 18 Oct 09:20Z; 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