Jeremy Zakis reports on the unprecedented rainfall sweeping across Australia, driven by a super El Niño cycle interacting with the Indian Ocean Dipole. South Australia and Adelaide experienced the heaviest downpours, breaking monthly rainfall records in a single day, while Sydney's infrastructure coped with several inches of rain. Victoria and Melbourne were largely spared due to the Great Dividing Range acting as a barrier. Zakis warns that weekly spring rains are highly unusual and threaten to fuel rapid forest undergrowth, which could dry out and create a dangerous bushfire hazard during future droughts. (10)