If you are looking for a “canary in a coal mine” type of warning for the entire global economy, you have a whole bunch to pick from right now. “Dr. Copper” just hit a six year low, Morgan Stanley is warning that this could be the worst oil price crash in 45 years, the Chinese economy is suddenly stalling out, and world trade is falling at the fastest pace that we have seen since the last financial crisis. In order not to see all of the signs that are pointing toward a global economic slowdown, you would have to be willingly blind. In recent months, I have been writing article after article detailing how the exact same patterns that happened just before the stock market crash of 2008 are playing out once again. We are watching a slow-motion train wreck unfold right before our eyes, and things are only going to get worse from here.

Copper is referred to as “Dr. Copper” because it does such an excellent job of indicating where economic conditions are heading next. We saw this in 2008, when the price of copper started crashing big time in the months leading up to the stock market implosion.

Well, now copper is crashing again. Just check out this chart. The price of copper plunged again on Wednesday, and it is now the lowest that it has been since the last financial crisis. Unfortunately, the forecast for the months ahead is not good. The following is what Goldman Sachs is saying about copper…

“Though we have been bearish on copper on a 12-mo forward basis for the past two and a half years, we have maintained a more bullish medium to long-term stance on the assumption of Chinese copper demand growth of 4% per annum and a major slowing in supply growth around 2017/2018 … we substantially lower our short, medium, and long-term copper price forecasts, on the back of lower Chinese copper demand growth forecasts (we have been highlighting that the risk has been skewed to the downside for some time), increased conviction in copper supply growth over the next three years, and increased conviction in the outlook for mining cost deflation in dollar terms.”