La Nina Winter 2024. 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. La niña affects hurricanes, winter weather.
The national oceanic and atmospheric administration’s climate prediction center says there is a 60% chance that a weak la nina event will develop this autumn and could last. Climate change and the outgoing el niño will likely ignite more weather.