Caribbean Sea storm

11°25.7′N 060°21.7′W

Waves left about 25 Sep 12:29Z, ± 6 h

Placed by 2 buoys, whose own placements lie within 337 mi 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