North Atlantic storm

38°01.2′N 050°16.5′W

Waves left about 23 Oct 04:47Z, ± 6 h

Placed by 2 buoys, whose own placements lie within 215 nmi of it

Its swell was last measured at 44007 (Portland, ME) on 26 Oct 13:34Z; 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