South Atlantic storm

20°52.8′S 004°22.4′E

Waves left about 27 Oct 20:18Z, ± 14 h

Placed by 2 buoys, whose own placements lie within 275 nmi of it

Its swell was last measured at 44088 (Virginia Beach Offshore, VA) on 12 Nov 12:00Z; 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