North Atlantic storm

29°33.4′N 064°32.8′W

Waves left about 30 Sep 22:01Z, ± 4 h

Placed by 2 buoys, whose own placements lie within 98 nmi of it

Its swell was last measured at 41047 (NE BAHAMAS - 350 NM ENE of Nassau, Bahamas) on 3 Oct 06:50Z; 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