The NAO is about to drop below zero for the first time since mid-December. FYI, I don’t know too much about the NAO other then when it goes negative, and we have a northeast storm, it CAN be pretty intense, and mean snow for the Philly/Lancaster area. Well, it’s finally dipping down below the zero line. Is it too late for snow? I think there’s a small chance for a dusting the rest of the season, but I don’t see any more major snow accumulation anytime this season.
Here’s today’s NAO for your viewing pleasure. The black line is what it has been, and the red lines line indicate different model’s forecasts’ for the next week or so. (Click the image to enlarge.)
