Bluegraph
SIMarineUS

Storms placed by their swell

North Atlantic storm

33°53.2′N 049°43.4′W

Waves left about 16 Oct 14:22Z, ± 3 h

Placed by 2 buoys, whose own placements lie within 282 nmi of it

Its swell was last measured at 42060 (Caribbean Valley) on 20 Oct 09:20Z; 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