Mammatus Clouds above the Acropolis of Philippi

October 19, 2018

MammatusSkyfromGreece_IMG_9055-2 (1)

Photographer: John Miliadis
Summary Authors: John Miliadis; Jim Foster

The grim looking sky shown above was observed over the acropolis of Philippi in Krinides, Greece, on July 23, 2018. These drooping mammatus clouds loom over the ancient acropolis. They form as a result of downdrafts in convective storms and seem to be most often reported following the passage of strong thunderstorms. Note that the Archeological Site of Philippi was classified as a UNESCO World Heritage site in 2016.

Photo Details: Camera: Apple iPhone 6s; Software: Adobe Photoshop Lightroom 6.5 (Macintosh); Exposure Time: 0.0010s (1/1000); Aperture: ƒ/2.2; ISO equivalent: 25; Focal Length: 4.2mm.