Large swathes of eastern Australia have been lashed by heavy rain, with parts of New South Wales and Victoria recording record rainfall. The NSW South Coast bore the brunt of the weather system, which began Tuesday and continued through Wednesday. Porters Creek recorded 351mm in the 24 hours to 9am AEDT on Wednesday, while Point Perpendicular, Jervis Bay and Moruya all received more than 200mm.
In NSW, a severe thunderstorm warning remains in place for parts of the Hunter and the Mid North Coast as of 8pm AEDT. Storms have eased in Shoalhaven, Illawarra, Riverina and Central West regions, as well as Sydney and Newcastle. On the far South Coast, more than 90 homes have been inundated, and emergency crews have conducted two flood rescues. In Lake Conjola, 40 homes have been affected, with the lake rising by more than 1 metre overnight.
The NSW State Emergency Service (SES) has received about 370 calls for help from Wollongong to Eden. In south-west NSW, the town of Deniliquin received 135mm overnight and was effectively cut off. The SES said it was struggling to answer 40 outstanding call-outs for help.
Victoria's Swan Hill experienced flash flooding after 85.4mm of rain was recorded over a 24-hour period. Swan Hill Rural City Council CEO Scott Barber described the event as a "one in 50-year rainfall event." Communities in Victoria's east have been warned to prepare for heavy rainfall as the system moves south. By 2pm AEDT Wednesday, Victoria's SES had received 211 calls for help, with 26 in Swan Hill.
South-east Queensland escaped relatively unscathed after multiple warnings of giant hail and intense rainfall. At 6:04pm AEST, the Bureau of Meteorology warned of a "very dangerous" thunderstorm cell near Burpengary, but by 6:30pm it was no longer deemed dangerous and moved out to sea. A major flood warning is in place for the Moonie River, with major flooding possible at Thallon Bridge and moderate flooding at Nindigully.
The East Coast Low is expected to maintain heavy rain for at least another 24 hours in far south-east NSW and eastern Victoria, and possibly another 36 hours. Senior meteorologist Angus Hynes said Victoria, particularly the Gippsland area, can expect the heaviest falls in the coming days, with another 100–300mm possible.
