First flakes? Where early snow was reported across the US.

National Oceanic and Atmospheric Administration data shows snow has already appeared across much of the northern U.S. and the ...

Cold and snowy weather could be coming for many, thanks to the polar vortex

A significant change in the atmosphere means the weeks after Thanksgiving could be colder and snowier than normal across ...

Polar vortex in the Thanksgiving forecast: Who could see snow, freezing temps?

The culprit behind the country’s somewhat wacky weather, or at least part of it, is the (aforementioned) probable sudden stratospheric warming event (SSW) disrupting the stratosphere’s polar vortex ...

Machine learning model sharpens snowfall forecasts for the Mountain West

The varied topography of the Western United States—a patchwork of valleys and mountains, basins and plateaus—results in minutely localized weather. Accordingly, snowfall forecasts for the mountain ...

Tracking snow extent across the Northern Hemisphere: are we on track for our cold winter?

If you can remember from our winter forecast, snow extent in Siberia and Canada can impact our winter season. How do we ...