Gulf of Mexico storm

21°54.6′N 082°01.4′W

Waves left about 13 Oct 15:49Z, ± 3 h

Placed by 2 buoys, whose own placements lie within 121 nmi of it

Its swell was last measured at 42001 (Mid Gulf) on 16 Oct 21:50Z; 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