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Marine Thunderstorm Wind · Gulf of Alaska
Marine Thunderstorm Wind August 30, 2008 · Northern Chatham Strait, Gulf of Alaska
Where the report was made, with tornadoes recorded within 15 miles over the years.
What the National Weather Service wrote
Several Trained Spotters reported numerous cloud to ground lightning strikes from 1525 to 1630. Pilot reports confirmed this event. A Special Marine Warning was issued to warn for this event minly for lightning and gusty winds.
The wider storm
Unstable air combined with daytime solar heating caused an unusual lightning event over a popular marine area on the Labor Day weekend. On Saturday afternoon, 8/30, a thunderstorm developed over Peril Strait as clear skies surrounding the area allowed the heating into the 60s. The trigger temperature for cumulonimbus development was in the upper 50s as per the Annette sounding of that day. Trained Spotters and pilots observed numerous cloud to ground strikes in that area for a period from 1525 to 1630 local time.
Began near Angoon (57.4925, -135.1978).
Source: NOAA Storm Events Database, event 130316. Narratives are written by the National Weather Service forecast office that issued the report.
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