It is my understanding that most concentric eyewall events occur in nearly all RI storms. Since they have made great strides in the prediction of potential RI storms it is therefore easier to forecast if a storm is prone to concentric eyewall regeneration cycles. But does anybody out there have any current analysis on exactly what intiates this cycle? Andrew was mentioned as an example of CERC. Case studies have shown that most RI events occur in darkness. Does anybody know why? Is the RI event actually the end of a CERC event? (i.e. Andrew occured at night. )Thanks