We had a severe summer thunderstorm here in Perth, Western Australia on December 12 2011.
This is a photo of a Arcus Cloud that moved across the city just before sunset and I was lucky enough to find a spot with a clear view as it moved towards my location.
The storm produced allot of lightning, heavy rain and some hail that lasted well into the night.
The storm was allot closer then it appears in this photo and it was moving quickly towards where I was, so I quickly packed up and ran for cover not long after I took this photo.