Understanding La Niña NOAA Climate

What is La Nina?

• The Warmwater phase of a large climate pattern

• The Coldwater phase of a large climate pattern

• The Dry phase of a large climate pattern

• The Wet phase of a large climate pattern

What is the most influential climate pattern used in seasonal forecasting?

• El Nino

• La Nina

• Southern Oscillation

• Both La Nina and El Nino

What happens to ocean temperatures in the tropical Pacific during La Nina?

• They begin to cool about Fahrenheit below average

• They remain the same

• They fluctuate unpredictably

• They become warmer than average

What is the influence of La Nina on the United States?

• Leads to more drought across the southern tier

• Leads to more rainfall across the southern tier

• Leads to more cold air outbreaks over the northern tier

• Leads to more warm air outbreaks over the northern tier

How long can La Nina last?

• Up to four years

• Up to three years

• Up to two years

• Up to one year