North Pacific storm

34°04.0′N 144°14.0′W

Waves left about 2 Oct 19:26Z, ± 2 h

Placed by 3 buoys, whose own placements lie within 222 nmi of it

Its swell was last measured at 46061 (Seal Rocks, AK) on 10 Oct 01:20Z; 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