La Nina 2024 Canada Weather. The cooler waters of a la niña in the eastern pacific can drag the jet stream farther south during the colder months, allowing repeated spells of wet, snowy, and cool. The warm phase of the pacific ocean’s temperature cycle, known as el niño, is now winding down and is poised to move into its counterphase, la niña.
When average temperatures are 0.5°c lower than normal for about half a year, it’s considered an official la niña event. The wmo global producing centres of long.