There's Statistics and then there's Statistics. 3 Cold Winters in a row? It looks like it, with negative NAO, and a decreasing Gulf Stream, but surely not 3 winters in a row.
For me, we are in the same situation as last winter, apart from El Nino and La Nina, La Nina normally gives slightly milder winters than usual, but we don't know what'll happen when it reacts with a -NAO, which has been negative for a whole year now!
Despite all this, there's one thing that decides winter for me. One Battle.
Atlantic vs. Arctic & European winds.
Are you 'lukesluckybunch' on Met Monkey? Anyway, do you care to tell us why you have predicted such a cold winter?