North Atlantic storm

35°05.3′N 074°55.4′W

Waves left about 11 Oct 23:12Z, ± 4 h

Placed by 2 buoys, whose own placements lie within 143 nmi of it

Its swell was last measured at 41049 (South Bermuda) on 15 Oct 03:20Z; 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