La Nina In 2024. A winter el niño pattern typically bring wetter and colder conditions in the southern us while the northern areas are warmer. The average la niña pattern lasts about 15.4 months while el niño typically lasts 9.5 months, though the longest la niña on record spanned 37 months between 1973 and 1976.

First, as mentioned earlier, noaa forecasters expect a weaker la niña this winter. La niña is part of the weather phenomenon known as el niño southern oscillation, which is the changing of surface temperatures in the pacific ocean, according to.