Since daily ACE
represents a 4 - times daily sum of wind speed
squared, an «average» September 21st could see one of the following (among other combos): One TC at 125
knots Two TCs at 90
knots Three TCs at 70
knots or Six TCs at 50
knots Current TCs = 0 September 15: Global Hurricane Frequency [storms with maximum intensity greater than 64
knots] has dramatically collapsed during the past 2 - 3 years.