Start Of La Nina 2025. Noaa projects an 85 percent chance that the enso cycle will shift to its neutral phase between april and june 2025, and then a 60 percent chance a la niña. The latest forecast expects la niña to emerge this fall and persist through the winter.
Meanwhile, there is a 55% chance of la niña. Noaa projects an 85 percent chance that the enso cycle will shift to its neutral phase between april and june 2025, and then a 60 percent chance a la niña.