It generated 105km/h wind gusts, dumped more than 200 millimetres of rain at several locations and left 1400 residents without power and no timeframe on when their connection could be restored.
TC Imogen crossed the coast near Karumba in the Gulf of Carpentaria overnight, with winds of 105km/h recorded overnight along with 240 millimetres of rainfall at Normanton airport.
An Ergon Energy spokeswoman said the cyclone left more than 1000 customers in Normanton and Karumba without power, as well as 180 on Mornington Island.
Crews were working to fix a damaged power pole to get Normanton and Karumba connected again, but it would not be a quick fix. Power was restored to Mornington Island about Monday lunchtime.
Residents in Normanton and Karumba have been without power or internet since 3pm Sunday.
Ergon Energy crews were forced to wait for the storm to pass early Monday morning before doing aerial patrols to identify faults, after floodwaters prevented access to the network.
A severe weather warning remains for heavy rain across north Queensland, which may lead to flash flooding over several days, particularly between Cooktown and Ingham, the weather bureau warned.
All roads to the Gulf are currently closed with residents being advised to avoid rising flood waters.
The system was expected to bring heavy rainfall and flash flooding warnings to the eastern side of the Gulf as it passes across over the coming days, with 180 millimetres recorded at Majors Creek, just south of Townsville, and reports of water covering significant crossings in the area.
Meteorologist Rosa Hoff said although TC Imogen was likely to be reclassified as a tropical low, the impacts were still expected to be quite significant.
"The heavy rainfall is set to increase, not decrease associated with that reclassification. We’re still expecting many locations to receive wide-spread heavy rainfall, particularly across the Southern Peninsula, North Tropical Coast, and potentially down to the Herbert-Burdekin district," she said. ■