Bluegraph
SIMarineUS

Storms placed by their swell

North Pacific storm

46°43.4′N 145°18.9′W

Waves left about 7 Nov 12:26Z, ± 2 h

Placed by 3 buoys, whose own placements lie within 250 nmi of it

Its swell was last measured at 46015 (Port Orford, OR) on 9 Nov 12:20Z; 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