Bluegraph
SIMarineUS

Storms placed by their swell

North Atlantic storm

43°31.1′N 013°11.3′W

Waves left about 16 Oct 06:12Z, ± 9 h

Placed by 3 buoys, whose own placements lie within 364 nmi of it

Its swell was last measured at 44086 (Nags Head, NC) on 23 Oct 04:00Z; 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