ENSO subsurface recently became strong negative.. Moderate Nina range. I've studied this, and there is a correlation with central-ENSO-subsurface temperatures and the pattern! This Aleutian ridge models are showing at Day 10 fits nicely. +PNA's in December to early Jan usually sustain too, so it's also a pattern break.

What happened in 2002-03?

I wonder what winter was like here in 536 AD A massive volcanic eruption in Iceland spewed ash across the Northern Hemisphere, creating what observers described as a perpetual winter. But nature wasn't done with humanity yet. In 540 and 547, two more massive volcanic eruptions struck, prolonging the misery. Temperatures dropped between 1.5 and 2.5 degrees Celsius

I was just talking about how the pattern would likely snap back at some point. What was happening was unsustainable. I said that many times last month.

Gloomy and dark and drizzly all day and now the stars are shining. Classic.