Bluegraph
SIMarineUS

Storms placed by their swell

North Pacific storm

02°59.0′N 159°51.1′W

Waves left about 20 Oct 22:48Z, ± 6 h

Placed by 2 buoys, whose own placements lie within 162 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