Mammatus storm clouds over Cardunia Rocks WA Nullarbor west of Zanthus.

We had quite a thunder storm that night, the wind blew and lightning flashed all around, so close we made sure we didn't touch any metal parts in the trailer as we lay there in the dark... Notes from one of the Groups below... see also.. earthsky.org/earth/amazing-photos-of-mammatus-clouds About (Clouds) Mammatus Mammatus, also known as mammatocumulus, meaning "Mammary cloud" or "Breast cloud" is a meteorological term applied to a cellular pattern of pouches hanging underneath the base of a cloud. The name "mammatus" is derived from the Latin mamma (udder or breast), due to the clouds' characteristic shape, as some believe there is a resemblance between the shape of these clouds and the breast of a woman. Mammatus may appear as smooth, ragged or lumpy lobes and may be opaque or semitransparent. Because mammatus occur as a grouping of lobes, the way they clump together can vary from an isolated cluster to a field of mamma that spread over hundreds of kilometers to being organized along a line, and may be composed of unequal or similarly-sized lobes. The individual mammatus lobe average diameters of 1–3 km and lengths on average of 0.5 km. A lobe can last an average of 10 minutes, but a whole cluster of mamma can range from 15 minutes to a few hours. They usually are composed of ice, but also can be a mixture of ice and liquid water or be composed of almost entirely liquid water. Link...Know Your Cloud Formations: Flickr Style Version 1.2 BETA Something I've been working on.... for you Flickr Cloud / Storm Nuts www.flickr.com/groups/nebraskathunderstorms/discuss/72157... and the Wiki link from above en.wikipedia.org/wiki/Mammatus_cloud PA214115 You don't need to pray to God any more when there are storms in the sky, but you do have to be insured. Bertolt Brecht