North Atlantic storm

36°53.7′N 061°02.2′W

Waves left about 1 Nov 06:43Z, ± 3 h

Placed by 3 buoys, whose own placements lie within 204 nmi of it

Its swell was last measured at 44007 (Portland, ME) on 4 Nov 18:50Z; 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