Cyclone Oma has weakened into a CAT 2 storm, but the system is moving towards the Queensland Coast of Australia.
The areas now most at risk of risky surf conditions are Fraser Island and Wide Bay coast north of Bargara.
Large swells coinciding with king tides were expected to cause erosion, and communities from Bundaberg in Queensland to Ballina in NSW were under a cyclone watch.
Oma was a weak category two storm early on Thursday, sitting about 950km northeast off Brisbane and is moving slowly towards the coast at around 10km/h.
Gale-force winds were expected to hit coastal parts of Queensland from Friday, particularly the islands and exposed coasts.
Ms Pattie said southern Capricornia would see some high tides between half a metre and a metre above the highest tide of the year as well as coastal inundation and erosion.
People in the cyclone watch zone have been urged to make preparations should the cyclone threat increase. These sandbags are available for collection at depots at Darra, Morningside, Newmarket SES Depot and the Zillmere-North Depot.
"It's all a bit uncertain until Saturday when we should have a better idea of where it is heading but it is all hinging on how close the cyclone comes to the coasts", she said.
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A Severe Weather Warning for Damaging Winds, Abnormally High Tides and Dangerous Surf remains in place.
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.
'These conditions are then expected to extend south over the remaining southeastern Queensland coast during this evening and Friday. "We've already started to see escarping on some of our most popular beaches because this weather event also combines with a king tide".
Wide Bay Volunteer Marine Rescue's Bill Ker said conditions are likely to be particularly risky for small and recreational watercraft. "Forecast rainfall totals are largely dependent on the cyclone track and there are still a wide range of scenarios at this point".
The longer it stays offshore, the greater the potential damage to beaches as waves of up to six metres pound the shoreline, he said. "Don't go out it's too unsafe and you'll have nobody to rescue you", he said.
"It would end up decaying and dropping rainfall in those dry areas".
Queensland has not seen cyclonic conditions like this for some time, so How said it was unclear how severe the effect of Cyclone Oma could be.