ITSI Threshold based on trend

I'd like to set a threshold in ITSI based on how a KPI is trending. In this case, count of events trending towards 75,000 events per hour. So let's say it's 15 minutes past the hour and we're at 20,000 events, and the trend is upwards to the point where we'd be over 75,000 events this hour, I'd like to have my KPI turn orange instead of green. I assume the threshold indicator could look at the trend, but I think I'd need the hourly projected count and not just the current trend. Does this seem plausible or possible? Is there a more elegant way to accomplish this? Thanks