Mammatus Clouds | Ala Moana Beach Park, Honolulu HI

Ala Moana Beach Park with Waikiki and Diamond Head in the distance. It's 10 minutes after sunset and this ordinary tourist snap boasts an extraordinary sky. I've only witnessed Mammatus clouds a few times in my life. Shot from Kewalo Basin Park.

EOS 7D & EF-S 15-85 3.5-5.6 IS USM