Bluegraph
SIMarineUS

Storms placed by their swell

North Pacific storm

36°16.0′N 173°28.7′E

Waves left about 6 Nov 13:15Z, ± 7 h

Placed by 2 buoys, whose own placements lie within 199 nmi of it

Its swell was last measured at 46066 (South Kodiak, AK) on 10 Nov 00:20Z; 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