The weakness looks corrective, and when it ends look for the Dollar Index to leap to the next bullish threshold, 80.57. The much bigger picture in the accompanying chart shows both the power and potential of the dollar’s impulsive rally off mid-July’s low. It has already corrected sufficiently to embark on a second leg (CD), but officially this would be signaled by an uncorrected (on the weekly chart) booster-stage thrust of at least 2.27 points.