North Atlantic storm

25°54.4′N 071°28.7′W

Waves left about 30 Sep 12:10Z, ± 3 h

Placed by 3 buoys, whose own placements lie within 164 nmi of it

Its swell was last measured at 41010 (Canaveral East, FL) on 4 Oct 23:50Z; 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