First isolated cell builds with a CI of 40-50%.

Initial cell continues to grow with a CI of 80-90%.

Initial cell reaches a CI of >90% with a new cell developing to the southwest showing a CI 80-90%.

Initial cell eventially goes “poof”, with secondary cell continuing to grow and show a CI of >90%.

Second cell continues to grow with CI still >90% on the southwest flank.

Second cell continues to grow. A warning was eventially issued for this storm.

Scott Rudge.