North Atlantic storm

04°36.1′N 050°11.0′W

Waves left about 2 Oct 18:53Z, ± 7 h

Placed by 2 buoys, whose own placements lie within 94 nmi of it

Its swell was last measured at 41043 (NE Puerto Rico) on 8 Oct 15:20Z; 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