This calendar for Australia shows the elements at their wildest and most magnificent.
Each year the Bureau of Meteorology and Australian Meteorological and Oceanographic Society organizes a competition for the best weather pictures.
January: An electrical storm perfectly complements fireworks launched to mark Australia Day 2012 celebrations in Perth, in a stunning shot by Matthew Titmani.
February: A thunderstorm sweeps over the Melbourne suburb of Carrum Downs, captured by Flavio Bonicelli.
March: Sunset highlights streets of stratocumulus over Buninyong, central Victoria by Keith Day.
April: Majesty and threat - A cumulonimbus with anvil seen beyond wind turbines at Burra, S.A by photographer Helen Simpson.
May: Ship in sea fog off McCrae, Port Phillip Bay, Victoria,by photographer Meredith Banhid.
June: In the wake of a thunderstorm, hail blankets paddocks at Marong, Victoria by John Allen.
July: A squall line associated with a thunderstorm over Era Beach, south of Sydneyby photographer Bruce Cooper.
August: The ethereal beauty of a mist bow and fog at Mount Anne in Tasmania by Grant Dixon.
September: A massive dust storm rolls over the Arkaroola Wilderness Sanctuary in the northern Flinders Rangesof South Australia, in this stunning photograph by Peter MacDonald.
October: A thunderstorm threatens the Gold Coast, Queensland by photographer Ann Van Breemen.
November: The shadows of cumulus clouds dapple the parallel dunes of the Simpson Desert by Steve Strike.