North Atlantic storm

39°07.5′N 044°13.0′W

Waves left about 7 Nov 10:32Z, ± 6 h

Placed by 2 buoys, whose own placements lie within 241 nmi of it

Its swell was last measured at 42060 (Caribbean Valley) on 12 Nov 14:50Z; 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