The UN has issued a warning about the formation of El Niño, which is expected to bring extreme heat and weather risks. There is a possibility that this El Niño event could be particularly strong, with some reports suggesting an 80% chance of a "Super El Niño" this summer, although the severity and specifics of the event are not universally agreed upon. The UN is urging preparedness and action in response to the potential impacts of El Niño.