JCP daily chart:
This pattern is about 17 days long, so the classic break would occur somewhere b/t days 8-13. Today is day 7.
Be sure to look at volume on a pattern break. Classically volume should surge substantially. Volume on pullback days following a break should be markedly less. A break without a volume surge suggests pattern failure, but only in the sense that wedges and pennants are usually continuation patterns, thus pattern "failure" simply suggests that a trend change might be occurring.
YHOO is a recent case of pattern failure followed by trend reversal. Look back at the chart posted several days ago. The break occurred during the classic period, but was not accompanied by a surge in volume. This was a clue that the breakout was false. Ultimately the lower boundary of the pattern was taken out and acted as resistance for the next two days. Then came earnings! Nice earnings, but a delay in new software release and whoomp!!!
Volume is an important clue in consolidation pattern breaks.