South Pacific storm

06°39.5′S 134°43.3′W

Waves left about 1 Sep 19:10Z, ± 3 h

Placed by 6 buoys, whose own placements lie within 502 nmi of it

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