Brisbane has recorded its wettest 24 hours in more than half a century and its fifth-wettest day on record, but meteorologists say the rainfall is set to ease on Monday in south-east  and northern NSW.

About 275.2mm of rain fell in the 24 hours to 9am on Monday – a level not seen since 314mm fell on 26 January 1974, the same year the  River flooded in the wake of Tropical Cyclone Wanda.

Overnight, 200-400mm was recorded across Brisbane, the Gold Coast, the Sunshine Coast, the Scenic Rim and the Lockyer Valley.

There were falls of 100-200mm in parts of the Capricornia, the eastern Darling Downs and the Granite Belt.

Rain continued in north-east , although the heaviest falls were near the Queensland border, with 264mm at Bilambil Heights.

Rain from north-east Queensland and north-east NSW is expected to moderate, providing some relief, with heavy to intense falls becoming less likely throughout the afternoon.

On Monday morning, the Bureau of Meteorology said rain was expected to moderately ease, providing some relief, with heavy to intense falls becoming less likely throughout the afternoon.

There were easing conditions in north-east NSW on Monday afternoon, with severe weather warnings cancelled for the northern rivers, mid north coast, north-west slopes and plains and northern tablelands.

The NSW premier, Chris Minns, said on Monday morning the weather would remain unpredictable, warning of increased rainfall in the next 24 hours.

Minns said weather conditions had improved in Lismore, leading to a lift in evacuation notices in the area.

Residents in Brisbane can expect a medium chance of showers on Tuesday and tops of 27C, while further north on the Sunshine Coast, there is a medium chance of rain with tops of 28C.

At a midday press conference on Monday, the Queensland premier, David Crisafulli, said power has been restored to about 140,000 properties in the state, but more than 200,000 properties remained without it.

Crisafulli warned serious rainfall was still expected, telling Queenslanders to expect flash and river flooding in the coming days.

“The river levels  expected to get to the major flood level through Monday evening and rise further to around 12.35 metres in the overnight period Monday into Tuesday,” a BoM spokesperson said.

“Also out in that catchment area, in the Brisbane River catchment area, Laidley Creek is at the major flood level.”

There are still multiple severe weather warnings in place for southern Queensland, from north of Gympie down to the NSW border, and westward to Toowoomba and as far inland as Goondiwindi.
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