Bluegraph
SIMarineUS

Storms placed by their swell

North Atlantic storm

38°27.6′N 062°16.7′W

Waves left about 19 Oct 19:14Z, ± 2 h

Placed by 5 buoys, whose own placements lie within 206 nmi of it

Its swell was last measured at 42060 (Caribbean Valley) on 24 Oct 02:20Z; 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