Today the Institute for Supply Management published its monthly Manufacturing Report for August. The latest headline Purchasing Managers Index (PMI) was 49.1percent, a decrease of 2.1 percent from 51.2 the previous month. Today's headline number was below the Investing.com forecast of 51.1 percent.

Here is the key analysis from the report:

"The August PMI® registered 49.1 percent, a decrease of 2.1 percentage points from the July reading of 51.2 percent. The New Orders Index registered 47.2 percent, a decrease of 3.6 percentage points from the July reading of 50.8 percent. The Production Index registered 49.5 percent, a 1.3-percentage point decrease compared to the July reading of 50.8 percent. The Employment Index registered 47.4 percent, a decrease of 4.3 percentage points from the July reading of 51.7 percent. The Supplier Deliveries Index registered 51.4 percent, a 1.9-percentage point decrease from the July reading of 53.3 percent. The Inventories Index registered 49.9 percent, an increase of 0.4 percentage point from the July reading of 49.5 percent. The Prices Index registered 46 percent, a 0.9-percentage point increase from the July reading of 45.1 percent."

Here is the table of PMI components.

The chart below shows the Manufacturing Composite series, which stretches back to 1948. The eleven recessions during this time frame are indicated along with the index value the month before the recession starts.

(Click on image to enlarge)

For a diffusion index, the latest reading of 49.1 is its first month of contraction in almost 3 years. What sort of correlation does that have with the months before the start of recessions? Check out the red dots in the chart above.

Here is a closer look at the series beginning at the turn of the century.

(Click on image to enlarge)

Note: This commentary used the FRED USRECP series (Peak through the Period preceding the Trough) to highlight the recessions in the charts above. For example, the NBER dates the last cycle peak as December 2007, the trough as June 2009 and the duration as 18 months. The USRECP series thus flags December 2007 as the start of the recession and May 2009 as the last month of the recession, giving us the 18-month duration. The dot for the last recession in the charts above is thus for November 2007. The "Peak through the Period preceding the Trough" series is the one FRED uses in its monthly charts, as illustrated here.