This is peculiar, given the month and times we are living in. There is no way this is a contrail. Please see the 1st link from MrMBB333 and the 2nd link holds an article from the Daily Mail, titled "Weird cloud over Alaska". Luke 10:18....anyone?
https://www.youtube.com/watch?v=s2bnyVxdwmA
https://www.dailymail.co.uk/news/article-10701681/Weird-cloud-Alaska-ignites-talks-UFO-crash-weapons-test.html