Cold Air Now Pouring into the Northeast, Lake Effect Snows in Upstate New York...

A strong cold front ended our mild Thanksgiving week weather last night and early this morning.  Showers preceded the front and now strong cold air adection has moved in across the Great Lakes and the Northeast.  Lake effect snows are falling in upstate New York - the first significant lake effect snowfall of the season.  The GFS continues to develop a relatively weak low pressure system that tracks close to the NYC metro area on Wednesday, November 28th.  The model has been consistent with this system and has been forecasting a rain/snow event on this day for over a week.  A shot of very cold air will move in behind the low on Thursday and into next weekend across the Northeast.  Another storm moves into northern California and the Pacific Northwest on Tuesday and Wednesday.  A very strong ridge is forecast to develop over eastern Canada and the eastern US by December 3rd and 4th.  This will mean a mild start to December in the eastern third of the nation.  A strong area of low pressure will track across the Great Lakes around this time dragging a cold front across the Northeast with showers and then a turn to more seasonable weather by December 7th and 8th.  After this date, the trend appears to be a colder one with a storm moving into the Pacific Northwest, a low tracking across eastern Canada and low pressure begining to organize in the Gulf Coast region.  

The North Atlantic Oscillation (NAO) is forecast to continue its strong negative trend over the next two weeks.

George Wright is a Certified Consulting Meteorologist for Wright Weather Consulting, LLC. George is also a meteorologist with ABC News and Cablevision News 12. Our website is WrightWeather.com.