North Atlantic storm

31°38.1′N 055°30.4′W

Waves left about 3 Nov 01:20Z, ± 3 h

Placed by 3 buoys, whose own placements lie within 279 nmi of it

Its swell was last measured at 41044 (NE St Martin) on 5 Nov 18:20Z; 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