Explosion in the sky caused by lightning

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A recent thunderstorm on the Northeast Side of the city produced an unusual phenomenon: a dark circular formation in the sky, identified as a ring of smoke resulting from an explosion caused by lightning. This event has sparked interest and discussion among locals and weather officials. Additionally, a user shared a post about a detector designed to identify such smoke rings, indicating a growing curiosity about the science behind these occurrences. Follow-up reports continue to provide updates on the situation.
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"In addition to the usual fare that comes with a thunderstorm, many on the city’s Northeast Side witnessed an unusual dark circle in the sky, which turned out to be a ring of smoke that a weather official said emanated from an 'explosion caused by lightning'".

http://news.mysanantonio.com/story.cfm?xla=saen&xlb=180&xlc=1022772
 
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A follow up to the story:

http://www.woai.com/news/local/story.aspx?content_id=ABC2A860-778F-48BC-B92E-1B9C33EC7F51
 

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