BOM has issued a hazardous surf warning for the region stretching from 1770 to the Queensland border with the likelihood of a unsafe surf warning to follow in the days ahead.
Closer to Fiji and New Caledonia than the Australian mainland, Oma is tracking ominously southwest, with a growing number of predictive models forecasting the cyclone will cross the Queensland coast between Mackay and Fraser Island.
Forecasters say the weather system will continue to bring high winds and risky surf conditions to parts of the Queensland and northern New South Wales coast in the coming days.
"That's likely to increase in the next couple of days".
But residents in Queensland should not be too concerned, as the cyclone is not likely to cross the coast or make landfall.
BIG SEAS EXPECTED: Yeppoon is now experiencing high tides and submerged roads with big swells still coming.
The weather forecast is predicting showers for Biloela but that will depend on how the Category Two cyclone tracks, with sustained winds near the centre of 95 km per hour with wind gusts to 130 km per hour.
Rough conditions are expected to peak on Friday evening and into Saturday, also prompting the closure of island ferry services.More news: Colombian leader orders humanitarian convoy to return
A FLOOD watch warning is now in place for the Mary and Burrum rivers.
"The closer she comes to the coast, the more significant that rainfall will be and the further inland it will push", forecaster Lauren Pattie told the ABC.
The same conditions were expected as far south as Yamba in northern NSW.
The waves are picking up and expecting to increase to three metres inshore and four metres offshore by Friday before six metre offshore waves on the weekend.
"Anywhere south of about St Lawrence, so that's that area around Rockhampton, so anywhere south of there right down to Brisbane really is potentially in play for a cyclone crossing if that was to occur - but I've got to emphasise it will come near the coast and not necessarily cross the coast but it is possible it could cross the coast, " Campbell said. "But that would be maybe a better scenario than if it lingers off the coast".
As Oma makes its way south-west, it enters the "Australian area of responsibility", according to Bureau meteorologist Jonathan How.
"Sunday night die off but cyclone Oma is very unpredictable". How said residents of the affected areas could expected "very heavy rainfall, gale force winds and storm surges" and these conditions, along with abnormally high tides, could cause flooding.
"Due to the uncertainty in the future movement, the indicated winds will nearly certainly extend to regions outside the rings on this map", it said.