North Atlantic storm

45°23.5′N 061°35.2′W

Waves left about 17 Oct 13:25Z, ± 3 h

Placed by 4 buoys, whose own placements lie within 264 nmi of it

Its swell was last measured at 41041 (North Equatorial Two) on 22 Oct 18:20Z; 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