El Niño has arrived in Argentina.
El Niño is a weather phenomenon caused by warming of the Pacific Ocean.
This is expected to bring heavy rainfall in some areas of Argentina.
The rainfall could lead to flooding in some areas.
The Argentine government has issued warnings to residents in flood-prone areas.
El Niño is also expected to affect other parts of South America.
The effects of El Niño are unpredictable and can vary from region to region.