Gusts and torrential rain have caused widespread power outages and triggered flash floods in parts of Australia's east coast, with one person killed and a dozen soldiers wounded.

After days hovering off the coast as a Category 2 tropical cyclone and battering a 400km (250-mile) stretch of coastline, Alfred significantly weakened on Sunday, but still left significant disturbance along its path.

Some 316,540 people were without power as of Sunday in Queensland's southeast, where the Gold Coast city was the worst-hit area, energy distributor Energex said in a statement.

Prime Minister Anthony Albanese said on Sunday that the "situation in Queensland and northern New South Wales remains very serious due to flash flooding and heavy winds".

"Heavy rainfall, damaging wind gusts, and coastal surf impacts are expected to continue over coming days," Albanese said in Canberra.

In Queensland's Hervey Bay, more than 230mm (9 inches) of rain was recorded in just six hours on Sunday morning, according to State Premier David Crisafulli.

"We've seen that culminate in reports of flash flooding in homes and in businesses," Crisafulli was quoted as saying by the Sydney Morning Herald newspaper.

News.com.au reported that emergency services in Hervey Bay have carried out multiple rescues "in one of its worst weather emergencies on record" in the area.

Australia's Bureau of Meteorology said heavy rainfall that could cause flash flooding was developing on Sunday and could affect Brisbane as well as the Queensland regional centres of Ipswich, Sunshine Coast and Gympie.

Damaging winds with gusts of about 90km/h (60mph) were also possible in the state, the bureau said on its website.

Brisbane airport reopened on Sunday but posted on X that "ongoing weather may affect the schedule".

Queensland will decide later on Sunday whether about 1,000 state schools, closed due to the bad weather, will reopen on Monday.

The neighbouring state of New South Wales (NSW) has confirmed all public schools that were closed on Friday due to Alfred will remain closed again on Monday.

On Saturday, one man died in a flood in northern NSW.

Meanwhile, 13 Australian Defence Force soldiers en route to help residents in NSW's city of Lismore were injured in a road collision, officials said. According to The Sydney Morning Herald, two of the soldiers remain in serious condition.

Alfred is the first cyclone to cross the east Australian coast near the Queensland state capital of Brisbane since 1974.

Four people were killed and about 100 families were left homeless due to a landslide in southern Colombia's Narino department, according to Xinhua.

"The rains have left emergencies in several cities, but the most devastating occurred in (the community of) El Encano, in the city of Pasto, where a landslide claimed the lives of four people and left serious damage," Luis Alfonso Escobar, governor of Narino said on social media platform X.

The landslide impacted more than 400 families, making several roads impassable and causing the collapse of three aqueducts.

Authorities were working on clearing roads of debris and supplying drinking water with tanker trucks, said the governor.

In the city of La Cruz, 100 families were also affected by flooding and three pedestrian bridges were swept away.

Some "24 cities have requested machinery to clear roads and deal with landslides," said Escobar.

Argentina mourns 16 killed in floods

Government pledges $9.2m in financial aid for Bahia Blanca, a port city of 300,000 people south of Buenos Aires.

Argentina's President Javier Milei has declared a period of mourning after a flash flood in the port city of Bahia Blanca killed at least 16 people, with more still missing.

The president's office announced late on Sunday that the country would mark three days of national mourning over the tragedy, which came after heavy rains lashed the port city of Bahia Blanca. The statement did not say when the mourning period would begin.

Floods and landslides on Indonesia's main island of Java killed three people and left five more missing after heavy rains inundated two dozen towns, an official said Friday.

Torrential rains this week hit capital Jakarta and its surrounding cities, forcing thousands of residents to evacuate and authorities to use weather modification technology.