National Weather Service United States Department of Commerce

Cold Temperatures Across the Northern and Central Plains; Severe Weather Potential for the East

Severe weather and heavy rainfall potential along with warm temperatures will affect the eastern portions of the country through Sunday as a cold front tracks eastward. Meanwhile, much colder air across portions of the Plains will bring frost and freeze conditions into Sunday morning. Dry, mild and breezy conditions linger for the four-corner region where elevated to critical fire weather remains. Read More >

A La Niña Watch has been issued by the Climate Prediction Center. There is a 50-55% chance of La Niña conditions developing this fall and continuing through the winter.

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Below is a map of the typical effect La Niña has on the November-March temperatures in the United States. The yellow and orange colors indicate areas where temperatures often average warmer than normal during a La Niña winter:

La Nina temperature anomalies

 

 

Here is a map showing the typical effect La Niña has on November-March precipitation. The blue and green colors in the Ohio Valley indicate a tendency toward wetter than normal conditions:

La Nina precipitation anomalies

 

It is important to remember:

  • The influence of La Niña on the Ohio Valley is not very strong
  • Every La Niña is different, and not all La Niña winters behave the same way
  • The strength of the La Niña may make a difference in how it affects our weather both in terms of precipitation and temperature  (so far, this La Niña is expected to be weak)
  • There are myriad factors that work together to result in the weather we experience -- La Niña is just one of them