MJO is but one possible component among many and a new signal gets introduced every year. Plus the effects have changed. Nino and Nina used to be very consistent predictors for 50 years but less so now. AO/NAO still very vital but the rest are largely research in progress
Analog time frame day a Go and notice how the cold air is coming down from NY State and PA and not rolling off Maine nor plunging down thru ND/SD and rolling eastward where timing of cold air can be a problem
I have wondered that if the Gulf Stream has indeed weakened, could that be less attractive now to potential low pressures to move along Atlantic coastline miller A style?
Thats the design. 0-11” forecasted and couple posters asked me well what’s my prediction and my prediction is the 0-11” model output will verify. That’s what its all about anyway