• La Niña (known as little girl) is a weather pattern that occurs in Pacific Ocean.
• It is observed when sea surface temperatures (SSTs) in Eastern Equatorial Pacific (EEP) get comparatively colder than normal.
• Results in a strong high pressure over EEP (i.e. tropical west coast of South America).

Impact of La Niña.

• Better monsoon rains in India.
• Frequent and intense hurricanes and cyclones in Atlantic Ocean and Bay of Bengal.
• Causes drought in Peru and Ecuador.
• Heavy floods in Australia.
• High temperatures in Western Pacific, Indian Ocean, off Somalian coast.