North Atlantic storm

17°29.2′N 056°55.4′W

Waves left about 30 Oct 17:26Z, ± 4 h

Placed by 2 buoys, whose own placements lie within 244 nmi of it

Its swell was last measured at 44008 (Nantucket Offshore, MA) on 7 Nov 01:50Z; 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