The MJO hanging out in warm phases isn’t good. But there are a lot of factors that drive our snow chances and some of them run in cycles. It does seem like we fight a hostile base state more lately BUT we also tend to score more frequently when the pattern is good. I wouldn’t sweat any one factors short term tendency all too much. We have been doing alright anyways.
Just for some perspective. Snowfall at BWI by decade. Avg and # of above normal years.
1970s 17.8”/3 above
1980s 18.5”/4 above
1990s 17.7”/2 above
2000s 18”/2 above
2010s 24”/4 above
so the last decade was the best in Baltimore for snowfall since the 1960s. Obviously it’s not hurting us that much.
If anything the extremely anomalous 3 year run from 2013-16 raised expectations such that the last few winters seem worse than they are. While not great they were a pretty typical 3 year stretch. Nothing too awful by historical standards. Truth is we had the best snowfall decade in a long time yet some people act like we’ve been getting screwed.
Does the mjo matter, yes. Will it hurt some if we spend more time in phases 3-6, yes. But we’ve been ok and other factors have a say too. It’s also too small a time scale to make long term conclusions imo.