Winter 2026-2027. Historic Potential

[Bob Chill]

2 hours ago, Stormchaserchuck1 said:

Yeah, something interesting is the CPC NAO index has run significantly higher in the wintertime than what the 500mb composite has looked like. We've had all but 1 +NAO Winters since 10-11. And that one was -0.21. 

Yea, cpc uses 1000mb surface pressure patterns for its numerical index calc which throws me off at times too because we always look at 500mb height progs. Surface pressure does correlate to 500mb but things get muddy in that dept. Some of which is due to domain space size. I dont worry too much about the numerical index when 500mb looks tasty lol