Bluegraph
SIMarineUS

Storms placed by their swell

South Pacific storm

23°44.2′S 148°18.5′W

Waves left about 8 Oct 00:10Z, ± 4 h

Placed by 6 buoys, whose own placements lie within 503 nmi of it

Its swell was last measured at 46029 (Columbia River Bar, OR) on 17 Oct 07:50Z; 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