So Dec 2025 will be the most negative NAO Winter month (DJFM) since December 2010! 15 years, and 60 Winter months!
With the 1st half of January looking like -NAO, we may beat the record for most -NAO Winter since 2010-2011. We need -0.24 for the Winter average to have that, and through Jan 15, we will have about -1.00, meaning that we need <+0.50 for the 2nd half of Winter to have the most -NAO Winter in 15 years! Nice longer term pattern brake.