A vast northwest cloudband stretching across the continent has delivered unseasonably heavy rainfall to multiple states and territories. The widespread system is combining an upper-level trough with a tropical moisture feed, effectively funneling significant moisture across Australia. Institutional safety concerns are rising as the Bureau of Meteorology issues flood alerts for vulnerable coastal stretches.
In New South Wales, Limpinwood recorded 106mm of rain as official minor flood watches were triggered for the Mid North Coast and Northern Rivers districts. Forecasters expect an additional 50mm to 100mm of rain across these regions, with isolated pockets potentially exceeding 200mm before the system begins easing on Tuesday afternoon. The heavy downpours are impacting local transport routes and prompting emergency services to advise caution.
The unseasonal weather pattern has broken several historical records further inland and south. According to a detailed report by Weatherzone, Tennant Creek Airport in the Northern Territory registered 14.4mm of rain in a single day, completely eclipsing its entire historical monthly average for May of 8.6mm. Meanwhile, Hobart in Tasmania logged 15.8mm, marking its heaviest daily rainfall total so far this year.
Other states also experienced significant totals from the cross-continental system. The eastern Kimberley region in Western Australia saw unseasonal falls including 64mm at Parry Creek Farm, while Adelaide added 20mm to bring its monthly total to 52.2mm. Victoria’s North Central district received healthy falls between 25mm and 50mm, with Melbourne’s central and eastern suburbs collecting up to 25mm.