MJO phase 8 to 1 in late April is a -NAO vibe but with AN tendency in NNE especially as you move east and north. “Best in Maine”.
You can see that happening with the development of a weak coastal in gulf of Maine late Friday into early Saturday. That will send the boundary down to the mid Atlantic around Long Island with nasty easterly fetch. Guidance still catching on.
No. MJO 8 and 1 are warm phases in New England in April.
The warm anoms in Maine and Southeast Canada will continue to shift south on guidance as it catches on. The cold anoms over the central US SE and Mid Atlantic.
That will bust with the MJO to phase 8 to 1, with 1 being the warmest for this time of year in New England.
You’ll probably see the cold anoms in the mid Atlantic, Long Island to del Marva.