Heavy rainfall that has lashed the north Queensland coast for days has spread west, cutting off towns near the Gulf of Carpentaria.
At least six communities have been isolated by floodwaters after northwest areas between Georgetown and Normanton received more than 300mm of rainfall overnight.
Some areas are relying on supply drops from helicopters and planes as they brace for what may be a long wait for inundated roads to clear.
"Given the amount of water in those systems, it could be three-to-four days, it could be eight-to-10 days," Etheridge Shire Mayor Barry Hughes said of how long communities could be isolated.
Heavy rain and flash flooding is expected to hit Queensland's Gulf Country on Monday with falls up to 250mm over the next day.
A severe weather warning stretches from the Gulf Country across the tropical coast and down to the Burdekin region.
Rainfall has spread west but continues to hit the north Queensland coast which has been lashed for more than a week, claiming two lives and forcing hundreds to evacuate.
Rainfall is expected to ramp up until Wednesday between Tully and Ayr, including flood-hit regions like Ingham.
Ingham was one of the worst hit, with the army stepping in to help rebuild a bridge crossing after it was completely isolated by floodwaters.
Ingham residents lost power and food supplies were dwindling with locals at one stage told there was no running water.
Floodwaters claimed the lives of two women in the region after the nearby Herbert River, in the Hinchinbrook Shire, broke a record level set back in 1967.
"The flooding and isolation being felt in the Hinchinbrook Shire is something I've never seen before," local MP Nick Dametto told AAP.
"Most of us are just running on fumes."
Power is set to be restored to every Ingham household by Monday night, more than a week after the substation was inundated.
Around 1600 residents remain without power across north Queensland, after about 30,000 were at one stage in the dark.
Landslides, floodwaters and fallen trees have kept Ergon Energy crews busy as they tried to restore power.
"This has been a huge event, very, very challenging from an access perspective," Ergon Energy's Kev Lavender told reporters.
Some north Queensland coastal regions have already set February rainfall records just 10 days into the month after recording more than 1500mm.
Queensland's main arterial link, the Bruce Highway, is among the many roads cut off by floodwaters.
Transport Minister Brent Mickelberg on Monday said crews were focused on opening up routes to help get "trucks moving" and ensure supplies for rain-hit communities.
There were more than 60 requests for help in flood-affected regions in the past 24 hours.
Meanwhile, Western Australia is bracing for a possible tropical cyclone that could form by Tuesday.
The warning zone stretches across 350km between Cockatoo Island and Bidyadanga, including Broome.
The tropical low is currently near the northwest coastline of Western Australia and if it strengthens over the next 24 hours it will be named Tropical Cyclone Zelia.
A cyclone watch has been issued between Cape Levesque and Degray, including Broome.
This area may be battered by rain and thunderstorm activity from Monday afternoon before the weather conditions escalate with large waves and high tides on Tuesday.
Daily rainfall totals could reach up to 60mm over the next few days with even higher totals possible, leading to flash flooding.
A flood watch is in place for the West Kimberley region.
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