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Marine Thunderstorm Wind · Gulf of Alaska

Marine Thunderstorm Wind November 5, 2009 · Cape Decision To Cape Edgecumbe, Gulf of Alaska

58 mph

Estimated gust (50 kt)

Where the report was made, with tornadoes recorded within 15 miles over the years.

What the National Weather Service wrote

A line of heavy showers with embedded thunderstorms indicated by WSR-88D radar were moving north along the coast of Baranof Island. Lightning detection data also reported several strikes associated with the band of showers. Strong gusty winds were also associated with this band. Gusts from the showers of 40 kt at Port Alexander... 34 kt at Sitka and 42 kt at Buoy 46083 were reported around the time of the showers.

The wider storm

Clusters of showers behind a frontal band were moving northwards along the outer coast of Southeast Alaska. Several of the showers were locally heavy with strong gusty outflows with them. Lightning detection systems were also reporting strikes near these showers.

Began near Sitka (56.5854, -135.2390).

Source: NOAA Storm Events Database, event 200948. Narratives are written by the National Weather Service forecast office that issued the report.

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