NSW firefighters will travel to Western Australia to help with the state's flood response.
WA's north has been inundated after extreme weather and ex-tropical Cyclone Ellie dumped record amounts of water across the region.
Six firefighters will head to Broome and Kalgoorlie, which are now bearing the brunt of extreme weather.
They will be there for five days, helping with community liaison as well as planning and safety.
The Bureau of Meteorology issued an extreme weather warning for the region on Saturday with a hot and unstable air mass threatening to create major thunderstorms across the Pilbara.
But that has since been downgraded as flood recovery efforts continue.
Meanwhile, another group of specialist NSW firefighters has been sent to the far-west of their home state.
The in-water team will help with efforts in Menindee, where the remote town has been cut off by flood waters.
In Queensland, the bureau was still warning of the risk of flash flooding as heavy rain hits the Central Coast and Whitsundays.
Up to 250mm of rain could be dumped on the region in just six hours on Sunday, with a 24-hour total of up to 400mm possible.
