12/04/2017, 4:39 am EST

Developing/Expanding Eastern U.S. Snow Cover During Middle December

Snow cover is currently well below normal for early December across the North-Central to Northeast U.S. But that regime changes beginning this week and especially next week as a polar vortex weather pattern develops and combined with the relative warm Great Lakes causes widening snowfall (and snow cover).
12/03/2017, 7:08 pm EST

ENSO Analogs Show A Stronger La Nina

La Nina is looking stronger and may last longer than previously forecast. Additionally, the idea that El Nino could regenerate later in 2018 is now less likely. A La Nina global climate is now more certain through the first quarter of 2018.
11/29/2017, 10:30 am EST

Polar Vortex Pattern Emerging in U.S. in 9-10 Days

After a mild autumn and warm start to December the climate pattern reverses much colder as a “polar vortex” regime evolves in 9-10 days lingering into middle December. Early season chill especially in the Midwest with widening/deepening snow cover is expected.
11/28/2017, 10:27 am EST

Colder Pattern Change Ahead in Europe Featuring Developing and Widening Snow Cover

Negative North Atlantic oscillation unfolding and causing a series of pattern-changing cold troughs across Europe. The result is early season snow cover which is a surprise given the very warm autumn.