What is expected to happen during La Nina?

Answer 1

There is unusually low air pressure over the western tropical pacific.

Answer 2

During La Nina, cooler-than-average sea surface temperatures in the central and eastern equatorial Pacific Ocean lead to changes in atmospheric circulation patterns. This can result in increased rainfall in the western Pacific and parts of the Americas, leading to wetter-than-normal conditions in some regions (such as Australia and Southeast Asia) and drier conditions in others (such as the southwestern United States). La Nina can also enhance hurricane activity in the Atlantic Ocean.

Answer 3

In North America La Nina causes above average rainfall in the northern states and below average rainfall in the southern states. La Nina can also cause stronger hurricanes in the Atlantic.

Answer 4

The pressure gradient decreases.

Drought conditions in Australia.

Answer 5

There is unusually low air pressure over the western tropical Pacific.