Those are all the updates from NT emergency services for now. We'll have more updates across our platforms as the situation unfolds.

To stay across the the latest developments, tune into your emergency broadcaster ABC Local Radio.

The BOM's Jude Scott says Darwin is unlikely to be impacted by Tropical Cyclone Narelle.

"In the current weather pattern, we're seeing continuing showers and storms right across the Top End, but it's not expected that this system will directly impact Darwin," she says.

"It's more likely to travel kind of at the base of the Top End, so pass over and move west without actually taking that hook up further north to reach Darwin."

With the town of Katherine still reeling from major flooding just a few weeks ago, the BOM's Jude Scott has warned the town is expected to receive more rain from Tropical Cyclone Narelle.

"At this stage, the system, after it does cross the coast, it will weaken to ex-tropical cyclone status, but it still will be bringing heavy rainfall," she says.

"It is, at this stage, expected to pass directly over the Katherine region and there's every chance that the rainfall there will lead to renewed river rises along the Katherine catchment. 

"At this stage, the expectation is that we'll see moderate flooding levels return to Katherine.

"The difference between this system and the previous system is that this one is moving quite fast. So it's a system that's expected to cross the whole of the Northern Territory really within a 24-hour period. 

"And so given it's moving so fast, there's less opportunity for the weather system to stall and produce the heavier falls that can lead to the prolonged and major flooding."

Asked about the possibility of evacuations ahead of Tropical Cyclone Narelle reaching the NT, Kirsten Engels says there are no plans to evacuate any communities at this time.

"We're looking at things such as what shelters we've got in place, what the likely weather impacts and the flooding impacts are in each area, and I'm still making those decisions sort of hour by hour at the moment," she says.

She says evacuating Katherine and communities on Groote Eylandt is "not on the table right now", though noted "that's not to say that that won't change".

"We haven't made any decisions on evacuations right now. We're working through those," she says.

"We're looking at what shelters are available, what standard they're at, and whether they're able to meet the need that we might need them to meet over the weekend when Narelle hits. 

"If we did need to move [people], if that was a necessity, we would make that happen, but those decisions haven't been made right now." 

Greg Jarvis, the deputy chief officer of the NT Emergency Service, is up next.

He is urging people in communities in the path of Tropical Cyclone Narelle to start preparing their cyclone kits now.

"While we have a couple of days to prepare, it's a really good opportunity for community residents to start working on their cyclone emergency kits, particularly for those communities that may have already been impacted [by weather events], that may have depleted water, food, medication, batteries, torches, all that type of stuff," he says.

"This is an opportunity to start preparing; to take a big deep breath, acknowledge that we're all very tired and we have been working for a long time, but we have to go again."

Mr Jarvis says residents should also have a cyclone plan and know where their nearest cyclone shelters are.

He says SecureNT and BOM will be issuing regular warnings throughout the weekend.

"Refer to SecureNT for things like pets, animals, [and] what can and can't occur," he says.

Kirsten Engels has ended by thanking NT residents, as well as emergency services staff and volunteers, for their support and cooperation during the busy wet season so far.

She says authorities are grateful for of their assistance, and even though Tropical Cyclone Narelle marks another event to prepare for, people should not be complacent.

"We know that it's starting to get tedious. We know that we've been together a long time now talking about weather, but we really need you to keep your focus going and prepare for what we know is going to strike this weekend," she says.

"We're going to get through this. We've got another event to face, and we're going to face it together, and we're going to get through it together. " 

She says emergency services will keep the public updated through SecureNT, the media and community engagement.

Incident controller Kirsten Engels, from the NT Police Force, is speaking now.

She says Tropical Cyclone Narelle is set to be the NT's "seventh significant event for this wet season".

She says the cyclone is expected to impact the territory over the weekend as a category three system, and communities in its path should start preparing.

"We are asking everyone that might be impacted by this cyclone to begin their preparations now and to take this really seriously," she says.

"The team at the emergency operations centre here are heavily planning, but we are relying on the planning that's occurred over the previous months, weeks, years.

 This is not new to us. It's why we have local emergency committees and local emergency plans We have a lot of things that we put in place over the year that we enact in times like this."

She says it's a "very dynamic situation, and it's unfolding right now". 

"This includes assessing shelters and other options to keep people safe in their communities," she says.

"We will keep you updated as we unfold that information and make those decisions. "

The BOM is set to issue its first cyclone watch alert including the NT from Thursday morning, Jude Scott says.

That alert will provide an update on the impacts expected from Saturday.

Ms Scott says the BOM will be updating its warnings on Tropical Cyclone Narelle every six hours, with residents told to access the latest information on the Bureau of Meteorology website or app.

The BOM's Jude Scott says once Tropical Cyclone Narelle has crossed the NT coast on Sunday, it will bring heavy rainfall as it tracks over land.

"That includes areas of the Top End impacted by recent rainfall and flooding, including Beswick and Katherine," she says.

"Daily rainfall totals close to the centre of the system are forecast to be in the 150 to 200 millimetre range. 

"Given the already saturated river catchments right across the Top End, this rainfall is likely to lead to renewed river rises." 

She says the bureau will be issuing flood watches and warnings in the coming days, with more detail of where the impacts will be. 

The Bureau of Meteorology's Jude Scott is providing an update on Tropical Cyclone Narelle's likely trajectory into the NT. 

She says the system is currently at category two strength, about  950 kilometres east of the Far North Queensland coast.

"During tomorrow, the system will continue to move steadily west, intensifying to a category five system during Thursday, and then is likely to cross between the Lockhart River and Port Douglas in Queensland on Friday morning," she says.

"During Friday, it will weaken as it interacts with the land on the Cape York Peninsula, but then the system will move over the warm waters of the Gulf of Carpentaria, where during Saturday it is expected to re-intensify to cyclone strength.

"It will then move towards the NT coast in the Gulf of Carpentaria."

She says the communities likely to be impacted include Groote Eylandt, Numbulwar  and Ngukurr.

"Those impacts are expected from later on Saturday," she says.