The floods in Queensland are a result of a weather phenomenon called La Niña and it’s basically an enhancement of normal weather conditions. La Niña normally follows a strong El Niño, which normally occurs every four to seven year. The two phenomenon are eachother’s opposites; El Niño leads to a heating of the surface water in the eastern parts of the tropical Pacific Ocean, while La Niña leads to a cooling of the area. The name La Niña originates from Spanish, meaning the girl and El Niño means the boy.
The phenomenon occurs when the winds from the Pacific to Australia blow stronger and more persistent than usual. More water is brought against the Australian coast, causing heavy cloud formations to be created. The consequence is that the Australian continent, Southeast Asia and Oceania receive significantly more precipitation than usual, while parts of South America gets a draught instead. The phenomenon usually persists only around six months, but periods of up to two years has been recorded.
The La Niña causing the current floodings in Queensland is said to be the strongest La Niña since record was started being kept in the late 1800’s.
Here are some unbelievable before and after the flood pics from Brisbane and Ipswich:
From the top:
Wivenhoe Dam with all the gates open on January 10.
Albion Park raceway covered in water on January 13.
Shops in St Lucia, Brisbane on Januray 12.
Apartments on Sandford Rd, St Lucia, Brisbane on the morning of January 12 after the 4am high tide.
Coles supermarket in Brisbane Street, Ipswich, where the Bremer River peaked on January 12.