Isaacs's death knell was sounded about 5am Saturday when the National hurricane center's aircraft was unable to find a well-defined center and as a result the center reported that the storm had "dissipated." sustained winds in this wave are still at 35mph and Isaac is moving westward in the Caribbean at 16mph.

https://www.msn.com/en-us/weather/topstories/hurricane-isaac-has-dissipated-2-other-storms-remain-in-atlantic/ar-BBNneOf?ocid=spartandhp