One winter, or one year, proves nothing.
It's all in the trends. But I don't have to tell you that. You're a real scientist. You don't just play one on the Internet.
Maybe, if we're lucky, the rate at which things are getting worse isn't increasing quite as fast. But from what we can see of this function, we're going to have to take a lot of derivatives before we see an inflection point in the slope.