North Atlantic storm

37°26.4′N 062°12.1′W

Waves left about 3 Nov 17:13Z, ± 3 h

Placed by 2 buoys, whose own placements lie within 38 nmi of it

Its swell was last measured at 44008 (Nantucket Offshore, MA) on 5 Nov 00:50Z; 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