North Atlantic storm

29°59.7′N 056°04.0′W

Waves left about 17 Oct 14:50Z, ± 4 h

Placed by 2 buoys, whose own placements lie within 252 nmi of it

Its swell was last measured at 44085 (Buzzards Bay, MA (260)) on 20 Oct 19:00Z; 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