Bluegraph
SIMarineUS

Storms placed by their swell

North Pacific storm

03°12.5′N 159°34.2′W

Waves left about 21 Oct 00:00Z, ± 6 h

Placed by 2 buoys, whose own placements lie within 148 nmi of it

Its swell was last measured at 46237 (San Francisco Bar, CA (142)) on 27 Oct 23:00Z; 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