There are approximately 250 trading days in a calendar year. If you look back over the past three years, cycle lows have occurred 18 times. This means we should expect a rally out of a low about every 40 days.
The height of this triangle would be how far we could expect prices to fall. The height between 44 and 50 is 6 points. (this is actually 5.6 points to be exact). That would mean that the grain complex as a whole would drop a little over 10% from where we are today to 40.6 which is substantial.
Why would the FOMC meeting cause this type of move? The dollar cycle is in the timing band for its yearly cycle low and is currently trading at an area of significant support. I would expect this bottom to coincide with the FOMC meeting. This will probably result in a quick and powerful dollar rally that will pressure stocks and commodities, but will not be long lived. The reality of money printing will eventually take hold, probably when the dollar reaches its 200 day moving average and resume its journey southward into its 3 year cycle low sometime next summer. This should provide some better opportunities to price grain early next year, but there probably will not be many the rest of this year.