La Nina is here but it's on the weaker side as of September. We see this weak La Nina to peak now but get a second burst in December and January before moving to a neutral pattern Febraury and March. This weak La Nina means a colder winter for most of the nation and certainly much colder than last winter. The key to this winter will be how cold is the cold and how dominate will the Northern Jet (Arctic Jet) be vs. the moisture loaded Southern (Sub-Tropical Jet)?. Last year the Southern Jet was the big player off a massive El Nino but this winter that will not be the case most of the country. We expect an average swing of the NAO (North Atlantic Oscillation) but much more of a dip from the AO (Arctic Oscillation) bringing a few polar vortex periods and many Alberta Clippers.
CHICAGOLAND sits in the slightly above average snowfall this winter and below normal temperatures overall. We should see more clipper type systems than normal.
Last Winters Snowfall
Biggest Winter Snowfall Ever!
This Winter (2016-2017)
TEMPS THIS WINTER
OVERALL -1 to -2 BELOW NORMAL
TAKE A LOOK AT THESE WEATHER EXTREMES FOR CHICAGO
Chicago has seen some extreme weather over the years, so let’s take a dive into just how extreme winter can really get in the Windy City. Below we feature blogs on Chicago’s Snowiest Winter, Biggest Snowstorm, and even the Coldest Day!