North Atlantic storm

23°33.3′N 078°26.2′W

Waves left about 19 Oct 14:55Z, ± 8 h

Placed by 2 buoys, whose own placements lie within 198 nmi of it

Its swell was last measured at 41049 (South Bermuda) on 23 Oct 15:20Z; 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