The Meteorology of the Kenmore Air Crash near Sucia Island

On Thursday around 5:15 PM, a Kenmore Air float plane crashed on the south side of Sucia Island in the San Juans. An image from the final seconds (shown below) does not suggest particularly strong winds at the surface, nor any precipitation. The weather radar at the time of the incident shows a convective/thunderstorm line just to the south, but with the crash location (indicated by the red arrow)…