El/La Duradera is a tropical weather event that happens when eastern winds from the dry South America meets the southern winds from Antarctica, typically creating circulations in the South Atlantic if it's a La Duradera, but if it is an El Duradera, it's typically winds from the western, cold part of South America meeting northern tropical winds, creating a large circulation. Both El and La Duradera create circulations ranging from a small portion of 500 miles in the South Atlantic, to about 2,500 miles, around almost the entire South Atlantic. First, a low must exit either South America going east/west, or Antarctica going north, or the North Pacific going south for a possible La/El Duradera, then the circulation circles the low, giving it enough moisture to produce some pretty intense st