Last week, NOAA issued a La Niña watch, indicating conditions are favorable for the development of La Niña this winter. What does a La Niña winter typically mean for the U.S.?
Polar vortex brings cold here and there, but not everywhere
January 10, 2014
Wobbly polar vortex triggers extreme cold air outbreak
January 8, 2014
El Niño communicates with North America by tweaking the jet stream. How does all that work?
A high-level explainer of the jet stream. (Ha ha..."high-level"...get it?)
Kidding. Here's why the polar vortex may also cause you to take off your sweater sometimes.
Now that the 2016-2017 winter is over with, it's time to look back and see what happened. Did our winter outlook do well?