Winter Storm Decima to Bring a Cross-Country Mess of Snow and Ice to the West, Midwest and Northeast Into the Weekend

Winter Storm Decima - prounced DEH-si-mah - is poised to deliver another cross-country mess of snow, strong winds and some ice impacting a large swath of the nation into the upcoming weekend. Decima follows on the heels of Winter Storm Caly, which blanketed the U.S. with wintry weather from coast-to-coast last Thursday into this Monday, including the Pacific Northwest, Midwest and Northeast. Decima will get its start as a southward plunge of the jet stream, originating from the Gulf of Alaska, begins to plow into the western United States.

Energy in that jet-stream dip will eventually spawn an area of surface low pressure in the Plains, which will track northeastward with time through the central and eastern states. Moisture from that system will overlap with cold air to its north and from high pressure in the eastern states to make conditions ripe for the potential of snow, sleet and freezing rain in a large area.

Source: https://www.wunderground.com/news/winter-storm-decima-forecast-northwest-rockies-midwest-east