© UnknownMammatus Cloud Formations over Union Square Park
These very strange cloud formations suddenly appeared in the sky around 8:30 p.m. when the sun was setting in Union Square Park in NYC today.
Moments before their appearance, people were casually sitting on the steps of the park entrance and carrying on as most New Yorkers do. Suddenly, there were sounds of gasps and one by one people held their cell phones up to the sky to photograph this strange occurrence.
These weren't the famed chemtrails, neither the Lenticular clouds that are mistaken for UFO's or the wispy metaphysical Sylphs often spoken about in spiritual circles.
Comment: Here is an article covering the discovery of the "new" cloud formations.
The clouds with no name: Harbingers of a mighty storm