Bluegraph
SIMarineUS

Storms placed by their swell

North Atlantic storm

29°20.5′N 049°56.6′W

Waves left about 1 Oct 08:01Z, ± 3 h

Placed by 6 buoys, whose own placements lie within 180 nmi of it

Its swell was last measured at 41010 (Canaveral East, FL) on 5 Oct 16:20Z; 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