North Atlantic storm

41°16.7′N 063°08.6′W

Waves left about 24 Oct 13:47Z, ± 2 h

Placed by 2 buoys, whose own placements lie within 152 nmi of it

Its swell was last measured at 44097 (Block Island, RI (154)) on 25 Oct 23:00Z; 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