If you could be in both Kentucky and New York at the same time Wednesday, you would bear witness to some of the most extreme weather conditions that nature can produce. In Louisville and Lexington Wednesday, temperatures will head toward the 70s and severe thunderstorms will run amuck during the afternoon.

On the opposite of the coin, it will be snowing across a good portion of New York with temperatures barely at the freezing mark.

It's a simple matter of the blossoming spring season running head-on into winter's leftovers. That often happens in March and April, and when it does, the atmosphere is typically up to no good.

So there will be a big storm tonight and Wednesday, and it will impact a broad area from the northern Great Plains to the Northeast.

North of the storm track, there will be a disruptive snowfall, as much as 6 to 12 inches, but I've seen much worse this time of year. To the south, there will be destructive thunderstorms with straight-line winds gusting to over 60 miles per hour.

The storm is the initial step into a much colder weather pattern for the northern third of the country which will persist into next week and possibly even longer.

Story by AccuWeather.com Senior Meteorologist John Kocet.