Thirty beaches on Queensland's Gold and Sunshine Coasts have been closed as Tropical Cyclone Seth is expected to trigger dangerous surf and abnormally high tides.
While unlikely to directly impact the coastline over the following 48 hours, the category-one system will impact on southeast Queensland and northeast NSW coastlines from Sunday.
Surf Life Saving Queensland announced on Sunday morning it was closing the following beaches on the Gold and Sunshine Coasts "due to dangerous surf conditions":
Burleigh Heads Mowbray Park
Severe weather warnings for Queensland, NSW
Seth was sitting about about 630 km east northeast of Hervey Bay and 720 km northeast of Brisbane, the Bureau of Meteorology said early Sunday morning, and moving south-southeast at 29km/h.
Although maintaining its intensity, Seth is forecast to slow and shift southwest on Sunday afternoon.
Severe weather warnings are current for both southeast Queensland and northeast NSW coastlines.
The bureau says Seth should weaken as it transitions into a sub-tropical system on Monday.
"Movement beyond this time becomes uncertain," it said.
"However there is a general indication that it will drift westward closer to or over the Australian coast during next week."
Seth was downgraded from category two to a category one on Saturday.
Meteorologist Helen Reid told AAP indications were it would only be a tropical cyclone for another day or two and that if it crossed the coast it would not be as a tropical cyclone.
A strong wind warning was issued from Mackay to Sunshine Coast on Saturday, with gales expected to impact the southeast by Sunday after gusts of more than 100km/h off the coast on Friday night.
BOM also issued a severe weather warning from Wide Bay to the southeast coast with high tides expected to reach an "astronomical peak" over the next few days, easing on Wednesday.
Areas that may be affected include Gold Coast, Maroochydore, Coolangatta, Moreton Island, Noosa Heads, Caloundra, North Stradbroke Island, Rainbow Beach and Redcliffe.
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