Historically this is not a true inverted yield curve. A radical yield curve would show 1month>3month>1year>5year>30yr interest rates. Having been in the financial industry for over 30 years, I would not label this an inverted yield curve.
Quite frankly, I find it only mildly interesting. Particularly as a predictive tool.
Because I find predicting the future stock market direction to be largely a fools errand. Most professional traders eschew the prediction in favor of the process. I number among them.