North Atlantic storm

45°15.7′N 049°41.8′W

Waves left about 13 Oct 06:42Z, ± 8 h

Placed by 2 buoys, whose own placements lie within 51 nmi of it

Its swell was last measured at 41047 (NE BAHAMAS - 350 NM ENE of Nassau, Bahamas) on 17 Oct 05:20Z; 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