Following the La Nina Watch issued in July, the National Oceanic and Atmospheric Administration (NOAA) has reinforced the forecast of a La Nina event to a 60 percent probability in 2020. La Nina events are characterized by a lowering of ocean surface temperature in the Pacific accompanied by changes in high atmospheric winds promoting hurricanes.

A La Nina event will produce warmer and dryer conditions across southern U.S. states. The Midwest will be characterized by warm and wet weather.  NOAA forecasts draw parallels with previous severe Atlantic hurricane seasons when a La Nina was evident over a four-month period.

The possibility of a La Nina event was posted on July 27th on EGG-NEWS.  Subscribers are referred to a detailed description of the development of both El Nino and La Nina events by  entering El Nino in the Search feature.